CA2450924C - Expandable liner hanger with bypass - Google Patents
Expandable liner hanger with bypass Download PDFInfo
- Publication number
- CA2450924C CA2450924C CA002450924A CA2450924A CA2450924C CA 2450924 C CA2450924 C CA 2450924C CA 002450924 A CA002450924 A CA 002450924A CA 2450924 A CA2450924 A CA 2450924A CA 2450924 C CA2450924 C CA 2450924C
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- CA
- Canada
- Prior art keywords
- tubular
- wellbore
- tool
- fluid
- setting
- Prior art date
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- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims abstract description 124
- 238000000034 method Methods 0.000 claims abstract description 56
- 239000004568 cement Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 238000002407 reforming Methods 0.000 claims description 8
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 9
- 238000005553 drilling Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- RLLPVAHGXHCWKJ-IEBWSBKVSA-N (3-phenoxyphenyl)methyl (1s,3s)-3-(2,2-dichloroethenyl)-2,2-dimethylcyclopropane-1-carboxylate Chemical compound CC1(C)[C@H](C=C(Cl)Cl)[C@@H]1C(=O)OCC1=CC=CC(OC=2C=CC=CC=2)=C1 RLLPVAHGXHCWKJ-IEBWSBKVSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 230000013011 mating Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices, or the like for cementing casings into boreholes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/105—Expanding tools specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/106—Couplings or joints therefor
Abstract
The present invention provides a liner hanger and a method of hanging a liner in a wellborn. In one aspect, a process for setting a liner in a wellbore is provided in which a tubular (300) having a slip (340) formed on an outer diameter of the tubular at a first location (335) and a preformed bypass (330) for circulating a fluid disposed at a second location is set and expanded into substantial contact with an inner diameter of the wellbore, a casing, or another liner. In another aspect, a process for setting, a liner in a wellbore is provided in which a tubular having a slip formed on an outer diameter of the tubular at a first location is placed in the wellbore, a bypass for circulating a fluid is formed downhole, the liner is set and expanded into substantial contact with an inner diameter of the wellbore, a casing, or another liner. In yet another aspect, a process for creating, a liner top seal is provided in which the liner is set by expanding a protrusion in an upper end of a tubular into substantial contact with an inner diameter of the wellbore, and the upper end of the tubular is then reformed and expanded into substantial contact with the inner diameter of the wellbore.
Description
EXPANDABLE LINER HANGER WITH BYPASS
The invention relates to well drilling and completion, and to an apparatus and methods for use with expandable tubulars. Generally, the invention relates to a liner hanger and a method of hanging a liner.
In the oil and gas exploration and production industry, bore holes are drilled in the earth to access hydrocarbon-bearing formations. The drilled bores are lined with steel tubing, known as casing or liner, which is cemented in the bore. After a certain depth is reached, drilling is halted and a well casing is lowered down the wellbore and cemented in place. Typically, drilling resumes in the wellbore until a next predetermined depth is reached. At this stage, drilling is halted and a liner is lowered down the well casing.
The liner is suspended from the well casing or from a previous string of liner by a liner hanger which utilizes slips and cones and acts between the liner and the well casing.
The purpose of casing and liner is to provide support to the wellbore and facilitate isolation of certain parts of the wellbore.
The liner can be set mechanically or hydraulically. A typical apparatus for setting a liner in a well casing includes a liner hanger and a running tool. The running tool is provided with a valve seat obstruction which will allow fluid pressure to be developed to actuate the slips in order to set the liner hanger in the well casing. Once the liner hanger has been set, the running tool is rotated anti-clockwise to unscrew the running tool from the liner hanger and the ruruiing tool is then removed.
A recent trend in well completion has included expandable tubular technology.
Both slotted and solid tubulars can be expanded in situ to enlarge a fluid path through the tubular and also to fix a smaller tubular within the inner diameter of a larger tubular therearound. Tubulars are expanded by the use of a cone-shaped mandrel or by an expansion tool with expandable, fluid actuated members disposed on a body and run into the wellbore on a tubular string. During expansion of a tubular, the tubular walls are expanded past their elastic limit. Examples of expandable tubulars include slotted SUBSTITUTE SHEET (RULE 26)
The invention relates to well drilling and completion, and to an apparatus and methods for use with expandable tubulars. Generally, the invention relates to a liner hanger and a method of hanging a liner.
In the oil and gas exploration and production industry, bore holes are drilled in the earth to access hydrocarbon-bearing formations. The drilled bores are lined with steel tubing, known as casing or liner, which is cemented in the bore. After a certain depth is reached, drilling is halted and a well casing is lowered down the wellbore and cemented in place. Typically, drilling resumes in the wellbore until a next predetermined depth is reached. At this stage, drilling is halted and a liner is lowered down the well casing.
The liner is suspended from the well casing or from a previous string of liner by a liner hanger which utilizes slips and cones and acts between the liner and the well casing.
The purpose of casing and liner is to provide support to the wellbore and facilitate isolation of certain parts of the wellbore.
The liner can be set mechanically or hydraulically. A typical apparatus for setting a liner in a well casing includes a liner hanger and a running tool. The running tool is provided with a valve seat obstruction which will allow fluid pressure to be developed to actuate the slips in order to set the liner hanger in the well casing. Once the liner hanger has been set, the running tool is rotated anti-clockwise to unscrew the running tool from the liner hanger and the ruruiing tool is then removed.
A recent trend in well completion has included expandable tubular technology.
Both slotted and solid tubulars can be expanded in situ to enlarge a fluid path through the tubular and also to fix a smaller tubular within the inner diameter of a larger tubular therearound. Tubulars are expanded by the use of a cone-shaped mandrel or by an expansion tool with expandable, fluid actuated members disposed on a body and run into the wellbore on a tubular string. During expansion of a tubular, the tubular walls are expanded past their elastic limit. Examples of expandable tubulars include slotted SUBSTITUTE SHEET (RULE 26)
2 screen, joints, packers, and liners. Figure 1 is an exploded view of an exemplary expansion tool 100. The expansion tool 100 has a body 102 which is hollow and generally tubular with connectors 104 and 106 for connection to other components (not shown) of a downhole assembly. The connectors 104 and 106 are of a reduced diameter compared to the outside diameter of the longitudinally central body part of the tool 100.
The central body part has three recesses 114 to hold a respective roller 116.
Each of the recesses 114 has parallel sides and extends radially from a radially perforated tubular core (not shown) of the tool 100. Each of the mutually identical rollers 116 is somewhat cylindrical and barrelled. Each of the rollers 116 is mounted by means of an axle 118 at each end of the respective roller and the axles are mounted in slidable pistons 120. The rollers are arranged for rotation about a respective rotational axis which is parallel to the longitudinal axis of the tool 100 and radially offset therefrom at 120-degree mutual circumferential separations around the central body. The axles 118 are formed as integral end members of the rollers and the pistons 120 are radially slidable, one piston 120 being slidably sealed within each radially extended recess 114.
The inner end of each piston 120 is exposed to the pressure of fluid within the hollow core of the tool 100 by way of the radial perforations in the tubular core. In this manner, pressurized fluid provided from the surface of the well, via a tubular, can actuate the pistons 120 and cause them to extend outward and to contact the inner wall of a tubular to be expanded. Additionally, at an upper and a lower end of the expansion tool 100 are a plurality of non-compliant rollers 103 constructed and arranged to initially contact and expand a tubular prior to contact between the tubular and fluid actuated rollers 116. Unlike the compliant, fluid actuated rollers 116, the non-compliant rollers 103 are supported only with bearings and they do not change their radial position with respect to the body portion of the tool 100.
One use for expandable tubulars is to hang one tubular within another. For example, the upper portion of a liner can be expanded into contact with the inner wall of a casing in a wellbore. In this manner, the bulky and space-demanding slip assemblies and associated running tools can be eliminated. One problem with expandable tubular technology used with liners relates to cementing. Cementing is performed by SUBSTITUTE SHEET (RULE 26)
The central body part has three recesses 114 to hold a respective roller 116.
Each of the recesses 114 has parallel sides and extends radially from a radially perforated tubular core (not shown) of the tool 100. Each of the mutually identical rollers 116 is somewhat cylindrical and barrelled. Each of the rollers 116 is mounted by means of an axle 118 at each end of the respective roller and the axles are mounted in slidable pistons 120. The rollers are arranged for rotation about a respective rotational axis which is parallel to the longitudinal axis of the tool 100 and radially offset therefrom at 120-degree mutual circumferential separations around the central body. The axles 118 are formed as integral end members of the rollers and the pistons 120 are radially slidable, one piston 120 being slidably sealed within each radially extended recess 114.
The inner end of each piston 120 is exposed to the pressure of fluid within the hollow core of the tool 100 by way of the radial perforations in the tubular core. In this manner, pressurized fluid provided from the surface of the well, via a tubular, can actuate the pistons 120 and cause them to extend outward and to contact the inner wall of a tubular to be expanded. Additionally, at an upper and a lower end of the expansion tool 100 are a plurality of non-compliant rollers 103 constructed and arranged to initially contact and expand a tubular prior to contact between the tubular and fluid actuated rollers 116. Unlike the compliant, fluid actuated rollers 116, the non-compliant rollers 103 are supported only with bearings and they do not change their radial position with respect to the body portion of the tool 100.
One use for expandable tubulars is to hang one tubular within another. For example, the upper portion of a liner can be expanded into contact with the inner wall of a casing in a wellbore. In this manner, the bulky and space-demanding slip assemblies and associated running tools can be eliminated. One problem with expandable tubular technology used with liners relates to cementing. Cementing is performed by SUBSTITUTE SHEET (RULE 26)
3 circulating the uncured cement down the wellbore and back up an annulus between the exterior of the liner and the borehole therearound. In order for the cement to be circulated, a fluid path is necessary between the annulus and the wellbore.
Hanging a liner in a wellbore by circumferentially expanding its walls into casing seals the juncture and prevents circulation of fluids. In order to avoid this problem, liners must be either temporarily hung in a wellbore or, more preferably, partially expanded prior to cementing whereby the liner is suspended in the casing but a fluid path remains back to the surface of the well. The problem is usually addressed by partially expanding the liner in order to hang it in the wellbore and then finishing the expansion after the cementing is done but prior to the curing of the cement. However, the tools for expanding tubulars are typically designed to expand the tubular in a circumferential fashion and cannot be effectively used to only partially expand the tubular.
Therefore, there is a need for a liner hanger apparatus and method that permits a liner to be hung in a well and also permits a fluid path around the liner, at least temporarily.
There is a further need for a liner hanger that can be partially expanded into a casing but leaves a fluid path therearound. Additionally, there is a need for improved expandable liner hangers with a means for circulating fluids therearound.
In accordance with one aspect of the present invention there is provided a method of setting a liner in a wellbore, comprising:
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a setting tool in the tubular, the setting tool disposed on a run-in string of tubulars;
energizing the setting tool and causing an extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
SUBSTITUTE SHEET (RULE 26)
Hanging a liner in a wellbore by circumferentially expanding its walls into casing seals the juncture and prevents circulation of fluids. In order to avoid this problem, liners must be either temporarily hung in a wellbore or, more preferably, partially expanded prior to cementing whereby the liner is suspended in the casing but a fluid path remains back to the surface of the well. The problem is usually addressed by partially expanding the liner in order to hang it in the wellbore and then finishing the expansion after the cementing is done but prior to the curing of the cement. However, the tools for expanding tubulars are typically designed to expand the tubular in a circumferential fashion and cannot be effectively used to only partially expand the tubular.
Therefore, there is a need for a liner hanger apparatus and method that permits a liner to be hung in a well and also permits a fluid path around the liner, at least temporarily.
There is a further need for a liner hanger that can be partially expanded into a casing but leaves a fluid path therearound. Additionally, there is a need for improved expandable liner hangers with a means for circulating fluids therearound.
In accordance with one aspect of the present invention there is provided a method of setting a liner in a wellbore, comprising:
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a setting tool in the tubular, the setting tool disposed on a run-in string of tubulars;
energizing the setting tool and causing an extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
SUBSTITUTE SHEET (RULE 26)
4 The method may further comprise placing an expansion tool in the tubular, the expansion tool disposed on the run-in string of tubulars; energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore. The method may comprise reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
The step of circulating fluid into the wellbore may comprise circulating cement into the wellbore through the run-in string allowing returns to pass through the bypass circulating fluid into the wellbore may further comprise flowing a conditioning fluid into the wellbore.
The setting tool may be shearably connected to the liner.
The method may comprise releasing the setting tool prior to energizing the expansion tool. The liner and the setting tool may be placed in the wellbore as an assembly.
In another aspect, the invention provides a method of setting a liner in a wellbore, the method comprising:
placing an assembly in the wellbore, the assembly comprising:
a tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
a setting tool, the setting tool disposed on the run-in string of tubulars;
and an expansion tool, the expansion tool disposed on the run-in string of tubulars;
energizing the setting tool and causing a first extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip;
circulating the fluid into the wellbore;
energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore.
4a The method may comprise reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore. The method may comprise releasing the setting tool from the assembly after setting the slip.
In another aspect, the invention provides an apparatus for lining a wellbore, the apparatus comprising:
a tubular'having an upper end and a lower end, wherein the upper end has a diameter smaller than the lower end;
a slip disposed on an outside diameter of the upper end at a first location;
a preformed bypass disposed at a second location of the upper end; and a sealing band disposed around the outside diameter of the upper end.
The bypass may be substantially semi-circular. At least three bypasses may be disposed about equidistant around the outer diameter of the upper end. At least one slip may be disposed between each of the at least three bypasses. The upper end of the tubular may be a ductile material. The upper end may be tapered.
In another aspect, the invention provides a method of setting a liner in a wellbore, the method comprising:
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a means for setting the slip in the tubular and expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
The method may comprise placing a means for expanding tubular in the tubular and expanding the tubular into substantial contact with the inner diameter of the wellbore.
The method may comprise reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the welibore.
4b In another aspect, the invention provides an apparatus for lining a wellbore, the apparatus comprising:
a tubular having a preformed bypass for circulating a fluid;
a setting tool having at least one radially extendable setting member; and an expander tool having at least one radially extendable deforming member.
The setting member may be fluid pressure actuatable by pressurized fluid deliverable in a tubular string. The expander tool may be fluid pressure actuatable by pressurized fluid deliverable in a tubular string. The setting tool may be disposed on a run-in string and may have a bore longitudinally formed in its body with a ball seat disposed in the bore.
The ball seat of the setting tool may be constructed and arranged to receive a ball and to divert a fluid to a piston surface, thereby causing the setting members to extend radially.
The ball seat in the setting tool may be a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the tools to fluid flow. The expander tool may be disposed on the run-in string and has a bore longitudinally formed in its body with a ball seat disposed in the bore. The ball seat of the expansion tool may be constructed and arranged to receive a ball and to divert a fluid to a piston surface, thereby causing the deforming members to extend radially.
The ball seat in the expander tool may be a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the tools to fluid flow.
The ball seat of the expander tool may have a larger inner diameter than the ball seat of the setting tool.
The setting tool may be disposed in the run-in string at a point below the expander tool.
The setting tool and the expander tool may be disposed on a run-in string. A
frangible disc may be temporarily disposed between the setting tool and the expander tool. The frangible disc may be adapted to fail at a predetermined pressure, thereby opening the run-in string of tubulars to fluid flow. An automatic tubing filler may be disposed on the tubular string above the setting tool. The expander tool may have a bore longitudinally formed in its body with a ball seat disposed in the bore. The ball seat in the expander tool may be a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the expander tool and the run-in 4c string of tubulars to fluid flow. The run-in string may be a run-in string of tubulars with an automatic tubing filler disposed in the run-in string of tubulars above the setting tool and the expander tool.
A shearable connection may be between the tubular in the wellbore to be expanded and the apparatus.
In one aspect, a method and apparatus for setting a liner in a wellbore is provided in which a tubular having a slip surface formed on an outer diameter of the tubular at a first location and a preformed bypass formed at a second location is placed in the wellbore at a predetermined depth. A setting tool on a run-in string is placed in the tubular and energized to cause an extendable member therein to extend radially to contact an inner diameter of the tubular opposite the location of the slip surface, thereby expar}ding the tubular at the fnst location into substantial contact with an inner diameter of the wellbore. In this manner, the tubular is fixed in the wellbore. A
fluid, such as cement for cementing the liner into the wellbore, is then circulated into the wellbore with return fluid passing through the preformed bypass. An expansion tool on a run-in string is placed in the tubular and energized and/or rotated to cause an extendable member therein to radially contact the inner diameter of the tubular thereby expanding the tubular fully into circumferential contact with the inner diameter of the welibore.
In another aspect, the invention provides a method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surrounding surface using the tool.
4d In another aspect, the invention provides a method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore;
reforming the tubular; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surroundiiig surface using the tool.
In another aspect, the invention provides a method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface; and circulating the fluid into the wellbore, wherein portions of the tubular circumferentially adjacent the preformed bypass comprise gripping surfaces thereon, the gripping surfaces fixedly connected to the portions of the tubular at a location.
In another aspect, the invention provides a method of expanding a tubular in a wellbore, the method comprising:
using a first expander tool to increase a diameter of the tubular in at least one radially discrete direction, thereby leaving at least one radially discrete area unexpanded; and using a second expander tool to increase the diameter of the tubular circumferentially, including the at least one radially discrete direction.
4e In another aspect, the invention provides a method of expanding a tubular in a welibore, the method comprising:
using a first expander tool to increase a diameter of the tubular in at least one radially discrete direction along a first length of the tubular, thereby leaving at least one radially discrete area unexpanded; and using a second expander tool to increase the diameter of the tubular circumferentially along the first length of the tubular and a second length of the tubular different from the first length.
In another aspect, the invention provides an apparatus for expanding a tubular in a wellbore, the apparatus comprising:
a run in string of tubulars;
a first expander tool disposed on the run in string of tubulars, wherein the first expander tool is configured to increase the diameter of the tubular in at least one radially discrete direction, thereby leaving at least one radially discrete area unexpanded; and a second expander tool disposed on the run in string of tubulars, wherein the second expander tool is constructed to increase the diameter of the tubular circumferentially, including the at least one radially discrete direction.
In another aspect, the invention provides an apparatus for lining a wellbore, the apparatus comprising:
a tubular having a preformed bypass at a first location for circulating a fluid;
a setting tool having at least one radially extendable setting member arranged to contact an inner diameter of the tubular at a second location; and an expander tool having at least one radially extendable deforming member;
wherein the first location of the preformed bypass is separate from the second location.
Some preferred embodiments of the invention will now be described by way of example only and with reference to the accompanying drawings, in which:
Figure 1 is an exploded view of an expansion tool;
4f Figure 2 is a perspective view of an embodiment of a liner hanger in accordance with the invention;
Figure 3 is a section view of an embodiment of the invention including a first tubular disposed within a wellbore and an assembly disposed within the first tubular having an expansion tool, a setting tool, and a liner hanger disposed on an end of a run-in tubular;
Figure 4 is an exploded view of a setting tool;
Figure 5 is a top view of Figure 3 taken along line 5-5;
Figure 6 is a section view of the embodiment shown in Figure 3, wherein the liner hanger has been hung with the setting tool;
The step of circulating fluid into the wellbore may comprise circulating cement into the wellbore through the run-in string allowing returns to pass through the bypass circulating fluid into the wellbore may further comprise flowing a conditioning fluid into the wellbore.
The setting tool may be shearably connected to the liner.
The method may comprise releasing the setting tool prior to energizing the expansion tool. The liner and the setting tool may be placed in the wellbore as an assembly.
In another aspect, the invention provides a method of setting a liner in a wellbore, the method comprising:
placing an assembly in the wellbore, the assembly comprising:
a tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
a setting tool, the setting tool disposed on the run-in string of tubulars;
and an expansion tool, the expansion tool disposed on the run-in string of tubulars;
energizing the setting tool and causing a first extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip;
circulating the fluid into the wellbore;
energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore.
4a The method may comprise reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore. The method may comprise releasing the setting tool from the assembly after setting the slip.
In another aspect, the invention provides an apparatus for lining a wellbore, the apparatus comprising:
a tubular'having an upper end and a lower end, wherein the upper end has a diameter smaller than the lower end;
a slip disposed on an outside diameter of the upper end at a first location;
a preformed bypass disposed at a second location of the upper end; and a sealing band disposed around the outside diameter of the upper end.
The bypass may be substantially semi-circular. At least three bypasses may be disposed about equidistant around the outer diameter of the upper end. At least one slip may be disposed between each of the at least three bypasses. The upper end of the tubular may be a ductile material. The upper end may be tapered.
In another aspect, the invention provides a method of setting a liner in a wellbore, the method comprising:
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a means for setting the slip in the tubular and expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
The method may comprise placing a means for expanding tubular in the tubular and expanding the tubular into substantial contact with the inner diameter of the wellbore.
The method may comprise reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the welibore.
4b In another aspect, the invention provides an apparatus for lining a wellbore, the apparatus comprising:
a tubular having a preformed bypass for circulating a fluid;
a setting tool having at least one radially extendable setting member; and an expander tool having at least one radially extendable deforming member.
The setting member may be fluid pressure actuatable by pressurized fluid deliverable in a tubular string. The expander tool may be fluid pressure actuatable by pressurized fluid deliverable in a tubular string. The setting tool may be disposed on a run-in string and may have a bore longitudinally formed in its body with a ball seat disposed in the bore.
The ball seat of the setting tool may be constructed and arranged to receive a ball and to divert a fluid to a piston surface, thereby causing the setting members to extend radially.
The ball seat in the setting tool may be a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the tools to fluid flow. The expander tool may be disposed on the run-in string and has a bore longitudinally formed in its body with a ball seat disposed in the bore. The ball seat of the expansion tool may be constructed and arranged to receive a ball and to divert a fluid to a piston surface, thereby causing the deforming members to extend radially.
The ball seat in the expander tool may be a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the tools to fluid flow.
The ball seat of the expander tool may have a larger inner diameter than the ball seat of the setting tool.
The setting tool may be disposed in the run-in string at a point below the expander tool.
The setting tool and the expander tool may be disposed on a run-in string. A
frangible disc may be temporarily disposed between the setting tool and the expander tool. The frangible disc may be adapted to fail at a predetermined pressure, thereby opening the run-in string of tubulars to fluid flow. An automatic tubing filler may be disposed on the tubular string above the setting tool. The expander tool may have a bore longitudinally formed in its body with a ball seat disposed in the bore. The ball seat in the expander tool may be a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the expander tool and the run-in 4c string of tubulars to fluid flow. The run-in string may be a run-in string of tubulars with an automatic tubing filler disposed in the run-in string of tubulars above the setting tool and the expander tool.
A shearable connection may be between the tubular in the wellbore to be expanded and the apparatus.
In one aspect, a method and apparatus for setting a liner in a wellbore is provided in which a tubular having a slip surface formed on an outer diameter of the tubular at a first location and a preformed bypass formed at a second location is placed in the wellbore at a predetermined depth. A setting tool on a run-in string is placed in the tubular and energized to cause an extendable member therein to extend radially to contact an inner diameter of the tubular opposite the location of the slip surface, thereby expar}ding the tubular at the fnst location into substantial contact with an inner diameter of the wellbore. In this manner, the tubular is fixed in the wellbore. A
fluid, such as cement for cementing the liner into the wellbore, is then circulated into the wellbore with return fluid passing through the preformed bypass. An expansion tool on a run-in string is placed in the tubular and energized and/or rotated to cause an extendable member therein to radially contact the inner diameter of the tubular thereby expanding the tubular fully into circumferential contact with the inner diameter of the welibore.
In another aspect, the invention provides a method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surrounding surface using the tool.
4d In another aspect, the invention provides a method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore;
reforming the tubular; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surroundiiig surface using the tool.
In another aspect, the invention provides a method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface; and circulating the fluid into the wellbore, wherein portions of the tubular circumferentially adjacent the preformed bypass comprise gripping surfaces thereon, the gripping surfaces fixedly connected to the portions of the tubular at a location.
In another aspect, the invention provides a method of expanding a tubular in a wellbore, the method comprising:
using a first expander tool to increase a diameter of the tubular in at least one radially discrete direction, thereby leaving at least one radially discrete area unexpanded; and using a second expander tool to increase the diameter of the tubular circumferentially, including the at least one radially discrete direction.
4e In another aspect, the invention provides a method of expanding a tubular in a welibore, the method comprising:
using a first expander tool to increase a diameter of the tubular in at least one radially discrete direction along a first length of the tubular, thereby leaving at least one radially discrete area unexpanded; and using a second expander tool to increase the diameter of the tubular circumferentially along the first length of the tubular and a second length of the tubular different from the first length.
In another aspect, the invention provides an apparatus for expanding a tubular in a wellbore, the apparatus comprising:
a run in string of tubulars;
a first expander tool disposed on the run in string of tubulars, wherein the first expander tool is configured to increase the diameter of the tubular in at least one radially discrete direction, thereby leaving at least one radially discrete area unexpanded; and a second expander tool disposed on the run in string of tubulars, wherein the second expander tool is constructed to increase the diameter of the tubular circumferentially, including the at least one radially discrete direction.
In another aspect, the invention provides an apparatus for lining a wellbore, the apparatus comprising:
a tubular having a preformed bypass at a first location for circulating a fluid;
a setting tool having at least one radially extendable setting member arranged to contact an inner diameter of the tubular at a second location; and an expander tool having at least one radially extendable deforming member;
wherein the first location of the preformed bypass is separate from the second location.
Some preferred embodiments of the invention will now be described by way of example only and with reference to the accompanying drawings, in which:
Figure 1 is an exploded view of an expansion tool;
4f Figure 2 is a perspective view of an embodiment of a liner hanger in accordance with the invention;
Figure 3 is a section view of an embodiment of the invention including a first tubular disposed within a wellbore and an assembly disposed within the first tubular having an expansion tool, a setting tool, and a liner hanger disposed on an end of a run-in tubular;
Figure 4 is an exploded view of a setting tool;
Figure 5 is a top view of Figure 3 taken along line 5-5;
Figure 6 is a section view of the embodiment shown in Figure 3, wherein the liner hanger has been hung with the setting tool;
5 Figure 7 is a top view of Figure 6 taken along line 7-7;
Figure 8 is a section view of the embodiment shown in Figures 3 and 6;
illustrating a bypass area for fluid flow;
Figure 9 is a section view of the embodiment shown in Figures 3, 6 and 8, wherein the liner hanger has been partially expanded;
Figure 10 is a section view of the embodiment shown in Figures 3 6, 8 and 9, wherein the liner hanger has been expanded and the run-string and tools removed;
Figure 11 is a top view of Figure 10 taken along line 11-11; and Figure 12 is a section view of an alternative embodiment.
The present invention provides apparatus and method for setting a liner in a wellbore.
Figure 2 is a perspective view of a liner hanger 300 according to one embodiment of the invention. The liner hanger 300 has a generally tubular body 350 with an upper end 310 and a lower end 320. The upper end 310 has a maximum diameter smaller than the lower end 320 and is made of an expandable, ductile material. One or more slips 340 are formed on an outer diameter of the upper end 310 at a first location, or leg 335. The slips have grit or teeth on an outer surface thereof to help set the slips into the surrounding wellbore and hold the liner in place. Bypass areas 330 are formed between the legs 335 to permit a fluid path down the exterior of the liner.
Preferably, three legs 435 are formed in the liner hanger 420 with a slip 440 formed on the outer diameter of each thereof. The liner hanger 300 is preformed into an irregular shape to create the SUBSTITUTE SHEET (RULE 26)
Figure 8 is a section view of the embodiment shown in Figures 3 and 6;
illustrating a bypass area for fluid flow;
Figure 9 is a section view of the embodiment shown in Figures 3, 6 and 8, wherein the liner hanger has been partially expanded;
Figure 10 is a section view of the embodiment shown in Figures 3 6, 8 and 9, wherein the liner hanger has been expanded and the run-string and tools removed;
Figure 11 is a top view of Figure 10 taken along line 11-11; and Figure 12 is a section view of an alternative embodiment.
The present invention provides apparatus and method for setting a liner in a wellbore.
Figure 2 is a perspective view of a liner hanger 300 according to one embodiment of the invention. The liner hanger 300 has a generally tubular body 350 with an upper end 310 and a lower end 320. The upper end 310 has a maximum diameter smaller than the lower end 320 and is made of an expandable, ductile material. One or more slips 340 are formed on an outer diameter of the upper end 310 at a first location, or leg 335. The slips have grit or teeth on an outer surface thereof to help set the slips into the surrounding wellbore and hold the liner in place. Bypass areas 330 are formed between the legs 335 to permit a fluid path down the exterior of the liner.
Preferably, three legs 435 are formed in the liner hanger 420 with a slip 440 formed on the outer diameter of each thereof. The liner hanger 300 is preformed into an irregular shape to create the SUBSTITUTE SHEET (RULE 26)
6 bypass areas 330. The areas 330 may be any appropriate shape which allows for adequate fluid circulation between an upper and lower end of the liner hanger 300 and subsequent circumferential expansion of the liner hanger 300. Depending on application needs, a more free-formed shape may be desired to provide a thicker liner wall after the upper end has been reformed into a circular shape and expanded into the surrounding casing. Alternatively, the upper end of the tubular may be circumferential or cylindrical in shape and the bypass 330 may be formed downhole. A sealing member 360, such as an elastomeric ring is disposed around the outside diameter of the upper end to seal an annular area between the liner and an outer tubular.
Figure 3 is a section view of an embodiment of the invention including a first tubular, such as a casing 410, disposed within a wellbore 400 and an assembly disposed within the casing 410. The assembly includes an expansion tool 100, a setting tool 200, and carrying dogs 430 disposed on a run-in string of tubulars 470. Disposed around the assembly is a second tubular, or liner, including the liner hanger 420 at an upper end thereof. The liner is run into the wellbore with the assembly. During run-in, the liner hanger 420 is temporarily attached to the assembly with the carrying dogs 430 so that its weight is borne by the run-in string 470. The carrying dogs 430, in the illustrated embodiment, include radially extendable members which are mechanically held against the liner wall and interact with a mating recess 431 formed on the inside surface of the liner hanger 420. Typically, the carrying dogs 430 are set when the assembly is assembled at the surface of the wellbore 400. In this manner, the weight of the liner is borne by the assembly/run-in string until the liner is set in the casing. At a predetermined time, the carrying dogs 430 can be disengaged. Alternatively, the temporary connection between the assembly and the liner may be a shearable connection or an anchor.
Figure 4 is an exploded view of an exemplary setting tool 200. The setting too1200 has a body 202 which is hollow and generally tubular with connectors 204 and 206 for connection to other components (not shown) of a downhole assembly. The central body part has a recess 214 to hold radially extendable setting members 216. Each of the SUBSTITUTE SHEET (RULE 26)
Figure 3 is a section view of an embodiment of the invention including a first tubular, such as a casing 410, disposed within a wellbore 400 and an assembly disposed within the casing 410. The assembly includes an expansion tool 100, a setting tool 200, and carrying dogs 430 disposed on a run-in string of tubulars 470. Disposed around the assembly is a second tubular, or liner, including the liner hanger 420 at an upper end thereof. The liner is run into the wellbore with the assembly. During run-in, the liner hanger 420 is temporarily attached to the assembly with the carrying dogs 430 so that its weight is borne by the run-in string 470. The carrying dogs 430, in the illustrated embodiment, include radially extendable members which are mechanically held against the liner wall and interact with a mating recess 431 formed on the inside surface of the liner hanger 420. Typically, the carrying dogs 430 are set when the assembly is assembled at the surface of the wellbore 400. In this manner, the weight of the liner is borne by the assembly/run-in string until the liner is set in the casing. At a predetermined time, the carrying dogs 430 can be disengaged. Alternatively, the temporary connection between the assembly and the liner may be a shearable connection or an anchor.
Figure 4 is an exploded view of an exemplary setting tool 200. The setting too1200 has a body 202 which is hollow and generally tubular with connectors 204 and 206 for connection to other components (not shown) of a downhole assembly. The central body part has a recess 214 to hold radially extendable setting members 216. Each of the SUBSTITUTE SHEET (RULE 26)
7 recesses 214 has parallel sides and extends from a radially perforated inner tubular core (not shown) to the exterior of the too1200. Each mutually identical setting member 216 is generally rectangular having a bevelled setting surface and a piston surface 218 on the back thereof in fluid communication with pressurized fluid delivered by the tubular string 470. Pressurized fluid provided from the surface of the well, via the tubular or run-in string 470, can actuate the setting members 216 and cause them to extend outward and to contact the inner wall of a tubular, or liner hanger 420, to be expanded.
Referring again to Figure 3, the assembly includes the liner hanger 420 having one or more slips 440 disposed on one or more legs 335, one or more bypass areas 450, a sealing member 460, and carrying dogs 430. The sealing member 460 is disposed on the outer diameter of the liner hanger 420 below the slip 440. Alternatively, slips may be placed above and below the sealing member 460. The run-in string 470 is open at a lower end 480 to permit fluid, such as cement, to pass through the apparatus and to circulate back to the surface of the well through an annulus 490, between the liner hanger 420 and the wellbore 400, and the bypass 450 formed in the liner hanger 420. A
bridge plug 495 is disposed below the assembly prevents fluid from flowing upwards through the inner diameter of the liner hanger 420.
Fluid pressure in the run-in string 470 is used to selectively activate and deactivate the expansion tool 100 and setting too1200 through the use of balls and frangible ball seats 475, 485 formed in the central bore of each tool. As illustrated in Figure 3, the setting tool 200 has a ball seat 475 formed in its interior. The seat is constructed and arranged to receive a ball (not shown) of a given diameter dropped from above. The ball, when landed in the seat 475, redirects fluid from the central bore of the setting tool 200 to radially extending ports (not shown) and into fluid communication with the setting members 216. In this manner, the setting members are urged outwards. At a predetermined pressure over and above the operating pressure of the setting tool 200, the frangible ball seat 475 fails and the ball can fall through the assembly, re-opening the central bore of the tool 200 to the flow of fluid. Thereafter, the setting tool 200 is SUBSTITUTE SHEET (RULE 26)
Referring again to Figure 3, the assembly includes the liner hanger 420 having one or more slips 440 disposed on one or more legs 335, one or more bypass areas 450, a sealing member 460, and carrying dogs 430. The sealing member 460 is disposed on the outer diameter of the liner hanger 420 below the slip 440. Alternatively, slips may be placed above and below the sealing member 460. The run-in string 470 is open at a lower end 480 to permit fluid, such as cement, to pass through the apparatus and to circulate back to the surface of the well through an annulus 490, between the liner hanger 420 and the wellbore 400, and the bypass 450 formed in the liner hanger 420. A
bridge plug 495 is disposed below the assembly prevents fluid from flowing upwards through the inner diameter of the liner hanger 420.
Fluid pressure in the run-in string 470 is used to selectively activate and deactivate the expansion tool 100 and setting too1200 through the use of balls and frangible ball seats 475, 485 formed in the central bore of each tool. As illustrated in Figure 3, the setting tool 200 has a ball seat 475 formed in its interior. The seat is constructed and arranged to receive a ball (not shown) of a given diameter dropped from above. The ball, when landed in the seat 475, redirects fluid from the central bore of the setting tool 200 to radially extending ports (not shown) and into fluid communication with the setting members 216. In this manner, the setting members are urged outwards. At a predetermined pressure over and above the operating pressure of the setting tool 200, the frangible ball seat 475 fails and the ball can fall through the assembly, re-opening the central bore of the tool 200 to the flow of fluid. Thereafter, the setting tool 200 is SUBSTITUTE SHEET (RULE 26)
8 not affected by fluid passing through the assembly and the pressure actuated setting members 216 will be inoperable and will remain in a biased, retracted position.
Similarly, expansion tool 100 includes a frangible ball seat 485 formed in its interior.
The ball seat 485 in the expansion tool 100 is necessarily a larger diameter than the ball seat 475 in setting tool 200. The larger diameter of the expansion tool ball seat 485 permits a ball intended for use in the ball seat 475 of the setting tool 200 to pass through ball seat 485 of the expansion tool 100. With a properly sized ball located in the ball seat 485, fluid pressure will be redirected to the radially extendable rollers 116 of the expansion tool 100, permitting the tool 100 to operate. At a predetermined pressure over and above the operating pressure of the expansion tool 100, the frangible ball seat 485 fails and the ball is displaced to allow fluid flow through the central bore of the tool. Alternatively, the expansion tool or the setting tool could be operated selectively with a flapper valve that is initially open but can be closed to permit pressure to be developed thereabove. After operation of the tool, the flapper valve can be made to fail with pressure, thereby re-opening the bore to the flow of fluid.
Figure 5 is a top view of Figure 3 taken along line 5-5. The setting too1200 is shown in the run-in position with the setting members 216 retracted. The setting members are positioned adjacent the legs 435 which will be expanded radially outwards causing slips 440 to contact the casing 410.
Figure 6 is a section view of the embodiment shown in Figure 3, showing the slips 440 of the liner as they are set in the casing. As shown, the setting members 216 are temporarily in contact with the wall of the liner. A ball 476 is shown in ball seat 475 which has served to redirect fluid to the setting members. Figure 7 is a top view of Figure 6 taken along line 7-7. The setting members 216 have been actuated, engaging the legs 435 and expanding the slips 440 into substantial contact with the inner diameter of the casing 410. After the liner is set in the casing, the pressure of the fluid is reduced and the setting members of the tool 200 return to a biased, retracted position.
SUBSTITUTE SHEET (RULE 26)
Similarly, expansion tool 100 includes a frangible ball seat 485 formed in its interior.
The ball seat 485 in the expansion tool 100 is necessarily a larger diameter than the ball seat 475 in setting tool 200. The larger diameter of the expansion tool ball seat 485 permits a ball intended for use in the ball seat 475 of the setting tool 200 to pass through ball seat 485 of the expansion tool 100. With a properly sized ball located in the ball seat 485, fluid pressure will be redirected to the radially extendable rollers 116 of the expansion tool 100, permitting the tool 100 to operate. At a predetermined pressure over and above the operating pressure of the expansion tool 100, the frangible ball seat 485 fails and the ball is displaced to allow fluid flow through the central bore of the tool. Alternatively, the expansion tool or the setting tool could be operated selectively with a flapper valve that is initially open but can be closed to permit pressure to be developed thereabove. After operation of the tool, the flapper valve can be made to fail with pressure, thereby re-opening the bore to the flow of fluid.
Figure 5 is a top view of Figure 3 taken along line 5-5. The setting too1200 is shown in the run-in position with the setting members 216 retracted. The setting members are positioned adjacent the legs 435 which will be expanded radially outwards causing slips 440 to contact the casing 410.
Figure 6 is a section view of the embodiment shown in Figure 3, showing the slips 440 of the liner as they are set in the casing. As shown, the setting members 216 are temporarily in contact with the wall of the liner. A ball 476 is shown in ball seat 475 which has served to redirect fluid to the setting members. Figure 7 is a top view of Figure 6 taken along line 7-7. The setting members 216 have been actuated, engaging the legs 435 and expanding the slips 440 into substantial contact with the inner diameter of the casing 410. After the liner is set in the casing, the pressure of the fluid is reduced and the setting members of the tool 200 return to a biased, retracted position.
SUBSTITUTE SHEET (RULE 26)
9 Figure 8 is a section view of the embodiment shown in Figures 3 and 6 showing the flow of a fluid in the wellbore after the liner hanger 420 has been set. A
conditioning fluid or cement follows the path illustrated by arrows 451 down the run-in string 470 and back up to the surface of the well through the preformed bypasses 450 in the liner hanger 420. The first ball 476 (not shown) and ball seat 475 have been blown out of the setting tool 200 allowing fluid to pass through the run-in string 470 and returns to pass through the bypass 450 and annulus 490. The bridge plug 495 prevents the return fluid from passing through the inner diameter of the liner hanger 420. Visible in Figure 8 is cement in annulus 490 which had been circulated to a desired level 491.
Figure 9 is a section view of the embodiment shown in Figures 3, 6 and 8, illustrating the liner hanger 420 as it is expanded into the casing 410. A second ball 486 has been dropped into the second ball seat 485 redirecting pressurized fluid through the run-in string 470 and activating the rollers 116 of the expansion tool 100.
Figure 10 is a section view of the embodiment shown in Figures 3, 6, 8 and 9, wherein the liner hanger 420 has been fully expanded into the casing 410 and the run-in string 470 and tools 100, 200 have been removed. As shown in the Figure, the liner is completely set in the wellbore and cemented therein. Figure 11 is a top view of Figure
conditioning fluid or cement follows the path illustrated by arrows 451 down the run-in string 470 and back up to the surface of the well through the preformed bypasses 450 in the liner hanger 420. The first ball 476 (not shown) and ball seat 475 have been blown out of the setting tool 200 allowing fluid to pass through the run-in string 470 and returns to pass through the bypass 450 and annulus 490. The bridge plug 495 prevents the return fluid from passing through the inner diameter of the liner hanger 420. Visible in Figure 8 is cement in annulus 490 which had been circulated to a desired level 491.
Figure 9 is a section view of the embodiment shown in Figures 3, 6 and 8, illustrating the liner hanger 420 as it is expanded into the casing 410. A second ball 486 has been dropped into the second ball seat 485 redirecting pressurized fluid through the run-in string 470 and activating the rollers 116 of the expansion tool 100.
Figure 10 is a section view of the embodiment shown in Figures 3, 6, 8 and 9, wherein the liner hanger 420 has been fully expanded into the casing 410 and the run-in string 470 and tools 100, 200 have been removed. As shown in the Figure, the liner is completely set in the wellbore and cemented therein. Figure 11 is a top view of Figure
10 taken along line 11-11. The liner hanger 420 and sealing member 460 have been fully expanded into the first tubular 410 to form a liner top seal.
In operation, the assembly described above is run into the wellbore 400 to a desired location. During run-in, the assembly and run-in string 470 may fill with wellbore fluid as there are initially no obstructions in the central bore of the tools 100, 200. When the assembly reaches a location adjacent the casing where the liner will be set, a first ball is deposited in the ball seat 475 of the setting tool 200. Thereafter, pressurized fluid from the run-in string 470 is utilized and actuate the setting members 216 of the tool 200 and cause them to move outwards and into contact with the legs 435 of the liner hanger 420.
The pressurized fluid may also cause the rollers 116 of the expansion tool 100 to actuate. However, the actuation has no effect because the expansion tool 100 is located SUBSTITUTE SHEET (RULE 26) above the liner and the rollers 116 cannot extend to contact the casing 410.
As the setting tool 200 exerts forces against the leg 435, the leg 435 is expanded past its elastic limit along at least a portion of its outside diameter where the slip 440 is formed. The slip 440 engages the inner diameter of the casing 410, thereby setting the liner hanger 5 420 and liner in the casing 410. Alternatively, the expansion tool 100 may be used to set the liner hanger 420.
To ensure that liner hanger 420 is set in the casing 410, the liner hanger 420 may be pulled or pushed down prior to disengaging the carrying dogs 430. Once the liner 10 hanger 420 is set, a pressure above the rated limit of the first ball seat 475 is generated in the run-in string 470 to blow out the first ball and allow fluid, such as cement, to pass through the tool 200 and out the bottom lower end 480 of the run-in sting 470.
At this point, the wellbore 400 may be conditioned and/or cemented by any conventional means. Typically, cement is pumped through the run-in string 470 and out the lower end 480 thereof. Return fluid passes on the outside of the liner hanger 420 through the annulus 490 and the bypass 450. The bridge plug 495 prevents return fluid from passing through the inner diameter of the liner hanger 420.
Preferably, when a desired level of cement has been circulated around the liner, the second ball is deposited in the ball seat 485 of the expansion tool 100 to activate the expansion tool 100. Either before or after the ball is deposited in the ball seat, the expansion tool 100 is lowered to a predetermined axial position within the liner hanger 420. With the ball and seat backing the flow of fluid through the tool 100, pressurized fluid is provided through the run-in tubular 470. The fluid urges the rollers outwards to contact the wall of the liner hanger 420 therearound. The expansion tool 100 exerts forces against the wall of the liner hanger 420 while rotating and, optionally, while moving axially within the liner hanger 420. In this manner, the liner hanger 420 is expanded past its elastic limits around its circumference.
Gravity and the weight of the components can move the expansion tool 100 downward in the liner even as the rollers 116 of the expander tool 100 are actuated.
Alternatively, SUBSTITUTE SHEET (RULE 26)
In operation, the assembly described above is run into the wellbore 400 to a desired location. During run-in, the assembly and run-in string 470 may fill with wellbore fluid as there are initially no obstructions in the central bore of the tools 100, 200. When the assembly reaches a location adjacent the casing where the liner will be set, a first ball is deposited in the ball seat 475 of the setting tool 200. Thereafter, pressurized fluid from the run-in string 470 is utilized and actuate the setting members 216 of the tool 200 and cause them to move outwards and into contact with the legs 435 of the liner hanger 420.
The pressurized fluid may also cause the rollers 116 of the expansion tool 100 to actuate. However, the actuation has no effect because the expansion tool 100 is located SUBSTITUTE SHEET (RULE 26) above the liner and the rollers 116 cannot extend to contact the casing 410.
As the setting tool 200 exerts forces against the leg 435, the leg 435 is expanded past its elastic limit along at least a portion of its outside diameter where the slip 440 is formed. The slip 440 engages the inner diameter of the casing 410, thereby setting the liner hanger 5 420 and liner in the casing 410. Alternatively, the expansion tool 100 may be used to set the liner hanger 420.
To ensure that liner hanger 420 is set in the casing 410, the liner hanger 420 may be pulled or pushed down prior to disengaging the carrying dogs 430. Once the liner 10 hanger 420 is set, a pressure above the rated limit of the first ball seat 475 is generated in the run-in string 470 to blow out the first ball and allow fluid, such as cement, to pass through the tool 200 and out the bottom lower end 480 of the run-in sting 470.
At this point, the wellbore 400 may be conditioned and/or cemented by any conventional means. Typically, cement is pumped through the run-in string 470 and out the lower end 480 thereof. Return fluid passes on the outside of the liner hanger 420 through the annulus 490 and the bypass 450. The bridge plug 495 prevents return fluid from passing through the inner diameter of the liner hanger 420.
Preferably, when a desired level of cement has been circulated around the liner, the second ball is deposited in the ball seat 485 of the expansion tool 100 to activate the expansion tool 100. Either before or after the ball is deposited in the ball seat, the expansion tool 100 is lowered to a predetermined axial position within the liner hanger 420. With the ball and seat backing the flow of fluid through the tool 100, pressurized fluid is provided through the run-in tubular 470. The fluid urges the rollers outwards to contact the wall of the liner hanger 420 therearound. The expansion tool 100 exerts forces against the wall of the liner hanger 420 while rotating and, optionally, while moving axially within the liner hanger 420. In this manner, the liner hanger 420 is expanded past its elastic limits around its circumference.
Gravity and the weight of the components can move the expansion tool 100 downward in the liner even as the rollers 116 of the expander tool 100 are actuated.
Alternatively, SUBSTITUTE SHEET (RULE 26)
11 the expansion can take place in a "bottom up" fashion by providing an upward force on the run-in tubular string. A tractor (not shown) may be used in a lateral wellbore or in some other circumstance when gravity and the weight of the components are not adequate to cause the actuated expansion tool 100 to move downward along the wellbore 400. Additionally, the tractor may be necessary if the tool 100 is to be used to expand the tubular 420 wherein the tractor provides upward movement of the expansion tool 100 in the wellbore 400. Preferably, the non-compliant rollers 103 at the lower end of the expansion tool 100 contact the inner diameter of the liner hanger 420 as the expansion tool 100 is lowered. This serves to smooth out the legs 435 and reform the liner hanger 420 into a circular shape prior to fully expanding the liner hanger 420 into the first tubular 410. The liner hanger 420 is then expanded into circumferential contact with the casing 410.
To facilitate removal of the run-in string 470, a pressure over and above the operating pressure of the expansion tool 100 is created and the frangible ball seat 485 is caused to fail. The ball falls to a second location within the body of the tool 100 and the flow path through the assembly is again opened. The assembly can then be removed from the wellbore 400 and fluid within the run-in string 470 will drain into the wellbore.
While a ball and ball seat are described, it should be understood that any appropriate valve arrangement may be used, such as a sleeve for isolating fluid flow from the run-in string 470 to the setting 200 and expansion 100 tools.
Figure 12 is a section view of an alternative embodiment of the invention. An assembly is disposed within a wellbore 400 having casing 410 cemented therein.
Temporarily attached to the assembly with carrying dogs 430 is a liner hanger 420. The assembly includes an automatic tubing filler 710 on a run-in string 470 to permit filling of the tubular string during run-in with wellbore fluid; a setting tool 200 to fix the liner within the casing; a frangible disk 720 to temporarily obstruct a flow path through the tubular;
and an expansion tool 100 having a frangible ball seat 730 disposed in the lower end thereof. In Figure 12, a ball 731 is sitting in the ball seat 730. The ball serves to redirect pressurized fluid from the central bore of the tool 100 to the rollers 116.
SUBSTITUTE SHEET (RULE 26)
To facilitate removal of the run-in string 470, a pressure over and above the operating pressure of the expansion tool 100 is created and the frangible ball seat 485 is caused to fail. The ball falls to a second location within the body of the tool 100 and the flow path through the assembly is again opened. The assembly can then be removed from the wellbore 400 and fluid within the run-in string 470 will drain into the wellbore.
While a ball and ball seat are described, it should be understood that any appropriate valve arrangement may be used, such as a sleeve for isolating fluid flow from the run-in string 470 to the setting 200 and expansion 100 tools.
Figure 12 is a section view of an alternative embodiment of the invention. An assembly is disposed within a wellbore 400 having casing 410 cemented therein.
Temporarily attached to the assembly with carrying dogs 430 is a liner hanger 420. The assembly includes an automatic tubing filler 710 on a run-in string 470 to permit filling of the tubular string during run-in with wellbore fluid; a setting tool 200 to fix the liner within the casing; a frangible disk 720 to temporarily obstruct a flow path through the tubular;
and an expansion tool 100 having a frangible ball seat 730 disposed in the lower end thereof. In Figure 12, a ball 731 is sitting in the ball seat 730. The ball serves to redirect pressurized fluid from the central bore of the tool 100 to the rollers 116.
SUBSTITUTE SHEET (RULE 26)
12 The liner hanger 420 has one or more slips 440, having grit or teeth, to contact the wall of the casing formed on an outside diameter of an upper end of the tubular 420 at a first location, or leg 435, one or more bypass areas 450 for circulating a fluid at a second location of the upper end, and a sealing member 460 disposed around the outside diameter of the upper end. The leg 435, or protrusion, is formed at the first location between the bypass areas 450. The run-in tubular 470 is used to provide fluid to the setting 200 and expansion 100 tools. The tubular string is open at a lower end thereof. The open end 480 permits fluid, such as cement, to pass downward through the apparatus and to circulate back to the surface of the well through an annulus 490, between the liner and the wellbore 400, and the bypass 450 and the wellbore 400. A
bridge plug 495 prevents return fluid from passing through the inner diameter of the liner hanger 420.
In operation, the assembly, including the liner hanger 420, is run into the wellbore 400 to a desired location. The automatic tubing filler 710 allows the run-in string 470 to fill as the assembly is lowered into the wellbore 400. The tubing filler 710 operates by opening when wellbore fluid is at a higher pressure than fluid in the run-in string 470.
Similarly, the filler closes when the conditions are opposite, thereby preventing pressurized fluid in the run-in string 470 from escaping through the filler 710. Once the apparatus is located adjacent the casing 410, pressure in the run-in string 470 is increased in order to actuate the setting members 216 causing them to extend outward to contact the inner wall of the liner hanger 420 at the first location, or leg 435. The setting too1200 exerts radial forces against the leg 435 until the leg 435 expands past its elastic limit along at least a portion of its outside diameter where the slip 440 is disposed. The slip 440 then engages the inner diameter of the casing 410 thereby setting the one or more slips 440 and hanging the weight of the liner hanger 420.
Generation of pressure is aided by use of a frangible disk 720 disposed in the run-in string 470 between the setting too1200 and the expansion tool 100. To ensure that the liner hanger 420 is set, the assembly may be pulled up or pushed down prior to disengaging the carrying dogs 430.
SUBSTITUTE SHEET (RULE 26)
bridge plug 495 prevents return fluid from passing through the inner diameter of the liner hanger 420.
In operation, the assembly, including the liner hanger 420, is run into the wellbore 400 to a desired location. The automatic tubing filler 710 allows the run-in string 470 to fill as the assembly is lowered into the wellbore 400. The tubing filler 710 operates by opening when wellbore fluid is at a higher pressure than fluid in the run-in string 470.
Similarly, the filler closes when the conditions are opposite, thereby preventing pressurized fluid in the run-in string 470 from escaping through the filler 710. Once the apparatus is located adjacent the casing 410, pressure in the run-in string 470 is increased in order to actuate the setting members 216 causing them to extend outward to contact the inner wall of the liner hanger 420 at the first location, or leg 435. The setting too1200 exerts radial forces against the leg 435 until the leg 435 expands past its elastic limit along at least a portion of its outside diameter where the slip 440 is disposed. The slip 440 then engages the inner diameter of the casing 410 thereby setting the one or more slips 440 and hanging the weight of the liner hanger 420.
Generation of pressure is aided by use of a frangible disk 720 disposed in the run-in string 470 between the setting too1200 and the expansion tool 100. To ensure that the liner hanger 420 is set, the assembly may be pulled up or pushed down prior to disengaging the carrying dogs 430.
SUBSTITUTE SHEET (RULE 26)
13 After the liner hanger 420 is set in the casing, pressure above the rated limit of the frangible disk is created to blow out the disk and open a fluid path through the apparatus to allow a fluid, such as cement, to flow through the lower end 480 of the run-in string 470. Typically, cement is pumped through the run-in tubular 470 and out the lower end thereof. Return fluid passes on the outside of the liner hanger 420 and through the annulus 490 and the bypass 450.
When a desired level of cement is achieved, a ball 731 is deposited in ball seat 730 of the expansion tool 100. With the ball in place and the expansion tool 100 located adjacent the liner hanger 420, fluid is diverted from the central bore of the tool 100 to rollers 116 which are urged outwards to contact the wall of the liner hanger 420.
Preferably, at an upper end of the expansion tool 100 are a plurality of non-compliant rollers 103 constructed and arranged to initially contact and expand or reform the tubular 420 prior to contact between the tubular 420 and fluid actuated rollers 116. The expansion tool 100 exerts forces against the wall of the tubular 420 therearound while rotating and, optionally, moving axially within the wellbore 400. The liner hanger 420 is then expanded past its elastic limit and into substantial contact with the inner diameter of the wellbore 400. In this aspect, a liner top seal is created aided by the sealing member 460. Once the liner hanger 420 has been expanded, a pressure above the rated limit of the frangible ball seat 730 is created allowing the ball to pass to the bottom of the wellbore 400 and fluid to pass through the lower end 480 of the run-in string 470 facilitating removal of fluid in the run-in string 470 during removal from the wellbore 400.
As set forth in the foregoing, the invention provides an effective trip saving apparatus and methods for setting a tubular in a wellbore, circulating fluid, like cement around the tubular, and then sealing the tubular within a wellbore. While means to set and expand the tubular illustrated are fluid powered, it will be understood that any practical means, including mechanical means may be used. While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the SUBSTITUTE SHEET (RULE 26)
When a desired level of cement is achieved, a ball 731 is deposited in ball seat 730 of the expansion tool 100. With the ball in place and the expansion tool 100 located adjacent the liner hanger 420, fluid is diverted from the central bore of the tool 100 to rollers 116 which are urged outwards to contact the wall of the liner hanger 420.
Preferably, at an upper end of the expansion tool 100 are a plurality of non-compliant rollers 103 constructed and arranged to initially contact and expand or reform the tubular 420 prior to contact between the tubular 420 and fluid actuated rollers 116. The expansion tool 100 exerts forces against the wall of the tubular 420 therearound while rotating and, optionally, moving axially within the wellbore 400. The liner hanger 420 is then expanded past its elastic limit and into substantial contact with the inner diameter of the wellbore 400. In this aspect, a liner top seal is created aided by the sealing member 460. Once the liner hanger 420 has been expanded, a pressure above the rated limit of the frangible ball seat 730 is created allowing the ball to pass to the bottom of the wellbore 400 and fluid to pass through the lower end 480 of the run-in string 470 facilitating removal of fluid in the run-in string 470 during removal from the wellbore 400.
As set forth in the foregoing, the invention provides an effective trip saving apparatus and methods for setting a tubular in a wellbore, circulating fluid, like cement around the tubular, and then sealing the tubular within a wellbore. While means to set and expand the tubular illustrated are fluid powered, it will be understood that any practical means, including mechanical means may be used. While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the SUBSTITUTE SHEET (RULE 26)
14 invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
SUBSTITUTE SHEET (RULE 26)
SUBSTITUTE SHEET (RULE 26)
Claims (44)
1. A method of setting a liner in a wellbore, the method comprising:
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a setting tool in the tubular, the setting tool disposed on a run-in string of tubulars;
energizing the setting tool and causing a first extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a setting tool in the tubular, the setting tool disposed on a run-in string of tubulars;
energizing the setting tool and causing a first extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
2. A method of claim 1, further comprising:
placing an expansion tool in the tubular, the expansion tool disposed on the run-in string of tubulars;
energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore.
placing an expansion tool in the tubular, the expansion tool disposed on the run-in string of tubulars;
energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore.
3. A method of claim 2, further comprising:
reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
4. A method of any one of claims 1 to 3, wherein circulating fluid into the wellbore comprises circulating cement into the wellbore through the run-in string allowing returns to pass through the bypass.
5. A method of claim 4, wherein circulating fluid into the wellbore further comprises flowing a conditioning fluid into the wellbore.
6. A method of any one of claims 1 to 5, wherein the setting tool is shearably connected to the liner.
7. A method of any one of claims 1 to 6, further comprising:
releasing the setting tool prior to energizing the expansion tool.
releasing the setting tool prior to energizing the expansion tool.
8. A method of any one of claims 1 to 7, wherein the liner and the setting tool are placed in the wellbore as an assembly.
9. A method of setting a liner in a wellbore, the method comprising:
placing an assembly in the wellbore, the assembly comprising:
a tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
a setting tool, the setting tool disposed on the run-in string of tubulars;
and an expansion tool, the expansion tool disposed on the run-in string of tubulars;
energizing the setting tool and causing a first extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip;
circulating the fluid into the wellbore;
energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore.
placing an assembly in the wellbore, the assembly comprising:
a tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
a setting tool, the setting tool disposed on the run-in string of tubulars;
and an expansion tool, the expansion tool disposed on the run-in string of tubulars;
energizing the setting tool and causing a first extendable member therein to extend radially to contact an inner diameter of the tubular at the first location;
expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip;
circulating the fluid into the wellbore;
energizing the expansion tool and causing a second extendable member therein to extend radially to contact the inner diameter of the tubular; and expanding the tubular into substantial contact with the inner diameter of the wellbore.
10. A method of claim 9, further comprising:
reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
11. A method of claim 9 or 10, further comprising:
releasing the setting tool from the assembly after setting the slip.
releasing the setting tool from the assembly after setting the slip.
12. An apparatus for lining a wellbore, the apparatus comprising:
a tubular having an upper end and a lower end, wherein the upper end has a diameter smaller than the lower end;
a slip disposed on an outside diameter of the upper end at a first location;
a preformed bypass disposed at a second location of the upper end; and a sealing band disposed around the outside diameter of the upper end.
a tubular having an upper end and a lower end, wherein the upper end has a diameter smaller than the lower end;
a slip disposed on an outside diameter of the upper end at a first location;
a preformed bypass disposed at a second location of the upper end; and a sealing band disposed around the outside diameter of the upper end.
13. An apparatus of claim 12, wherein the bypass is substantially semi-circular.
14. An apparatus of claim 12 or 13, wherein at least three bypasses are disposed about equidistant around the outer diameter of the upper end.
15. An apparatus of claim 14, wherein at least one slip is disposed between each of the at least three bypasses.
16. An apparatus of any one of claims 12 to 15, wherein the upper end of the tubular is a ductile material.
17. An apparatus of any one of claims 12 to 16, wherein the upper end is tapered.
18. A method of setting a liner in a wellbore, the method comprising:
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a means for setting the slip in the tubular and expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
placing a tubular in the wellbore, the tubular having a slip disposed on an outer diameter of the tubular at a first location and a preformed bypass for circulating a fluid disposed at a second location;
placing a means for setting the slip in the tubular and expanding the tubular at the first location into substantial contact with an inner diameter of the wellbore, thereby setting the slip; and circulating the fluid into the wellbore.
19. A method of claim 18, further comprising:
placing a means for expanding tubular in the tubular and expanding the tubular into substantial contact with the inner diameter of the wellbore.
placing a means for expanding tubular in the tubular and expanding the tubular into substantial contact with the inner diameter of the wellbore.
20. A method claim 19, further comprising:
reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
reforming the tubular prior to expanding the tubular into substantial contact with the inner diameter of the wellbore.
21. An apparatus for lining a wellbore, the apparatus comprising:
a tubular having a preformed bypass at a first location for circulating a fluid;
a setting tool having at least one radially extendable setting member arranged to contact an inner diameter of the tubular at a second location; and an expander tool having at least one radially extendable deforming member;
wherein the first location of the preformed bypass is separate from the second location.
a tubular having a preformed bypass at a first location for circulating a fluid;
a setting tool having at least one radially extendable setting member arranged to contact an inner diameter of the tubular at a second location; and an expander tool having at least one radially extendable deforming member;
wherein the first location of the preformed bypass is separate from the second location.
22. An apparatus as claimed in claim 21, wherein the expander tool is fluid pressure actuatable by pressurized fluid deliverable in a tubular string.
23. An apparatus as claimed in claim 21, wherein the setting member is fluid pressure actuatable by pressurized fluid deliverable in a tubular string.
24. An apparatus as claimed in claim 23, wherein the expander tool is fluid pressure actuatable by pressurized fluid deliverable in the tubular string.
25. An apparatus of any one of claims 21 to 24, wherein the setting tool is disposed on a run-in string and has a bore longitudinally formed in its body with a ball seat disposed in the bore.
26. An apparatus of claim 25, wherein the ball seat of the setting tool is constructed and arranged to receive a ball and to divert a fluid to a piston surface, thereby causing the setting members to extend radially.
27. An apparatus of claim 25 or 26, wherein the ball seat in the setting tool is a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the tools to fluid flow.
28. An apparatus of any one of claims 25 to 27, wherein the expander tool is disposed on the run-in string and has a bore longitudinally formed in its body with a ball seat disposed in the bore.
29. An apparatus of claim 28, wherein the ball seat of the expansion tool is constructed and arranged to receive a ball and to divert a fluid to the piston surface, thereby causing the deforming members to extend radially.
30. An apparatus of claim 28 or 29, wherein the ball seat in the expander tool is a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the tools to fluid flow.
31. An apparatus of any one of claims 28 to 30, wherein the ball seat of the expander tool has a larger inner diameter than the ball seat of the setting tool.
32. An apparatus of any one of claims 21 to 31, wherein the setting tool is disposed in the run-in string at a point below the expander tool.
33. An apparatus of any one of claims 21 to 24, wherein the setting tool and the expander tool are disposed on a run-in string.
34. An apparatus of claim 33, further comprising:
a frangible disc temporarily disposed between the setting tool and the expander tool.
a frangible disc temporarily disposed between the setting tool and the expander tool.
35. An apparatus of claim 34, wherein the frangible disc is adapted to fail at a predetermined pressure, thereby opening the run-in string of tubulars to fluid flow.
36. An apparatus of any one of claims 33 to 35, further comprising an automatic tubing filler disposed on the tubular string above the setting tool.
37. An apparatus of any one of claims 33 to 36, wherein the expander tool has a bore longitudinally formed in its body with a ball seat disposed in the bore.
38. An apparatus of claim 37, wherein the ball seat in the expander tool is a frangible ball seat and is constructed and arranged to fail at a predetermined pressure, thereby reopening the bore of the expander tool and the run-in string of tubulars to fluid flow.
39. An apparatus of any one of claims 33 to 38, wherein the run-in string is a run-in string of tubulars with an automatic tubing filler disposed in the run-in string of tubulars above the setting tool and the expander tool.
40. An apparatus of any one of claims 21 to 39, further comprising:
a shearable connection between the tubular in the wellbore to be expanded and the apparatus.
a shearable connection between the tubular in the wellbore to be expanded and the apparatus.
41. A method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surrounding surface using the tool.
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surrounding surface using the tool.
42. A method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore;
reforming the tubular; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surrounding surface using the tool.
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface;
circulating the fluid into the wellbore;
reforming the tubular; and expanding the entire circumference of at least a portion of the tubular into substantial contact with the surrounding surface using the tool.
43. A method of setting a tubular in a wellbore, the method comprising:
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface; and circulating the fluid into the wellbore, wherein portions of the tubular circumferentially adjacent the preformed bypass comprise gripping surfaces thereon, the gripping surfaces fixedly connected to the portions of the tubular at a location.
placing the tubular in the wellbore, the tubular having a preformed bypass at an upper end thereof for circulating a fluid;
placing a tool having at least one radially extendable member in the wellbore;
expanding a portion of the tubular to selectively place portions of the tubular circumferentially adjacent the preformed bypass into frictional contact with a surrounding surface; and circulating the fluid into the wellbore, wherein portions of the tubular circumferentially adjacent the preformed bypass comprise gripping surfaces thereon, the gripping surfaces fixedly connected to the portions of the tubular at a location.
44. A method of claim 43, wherein the gripping surfaces are at the location prior to placing the tubular in the wellbore and after expanding the portion of the tubular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2626487A CA2626487C (en) | 2001-07-13 | 2002-07-15 | Expandable liner hanger with bypass |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/904,735 | 2001-07-13 | ||
| US09/904,735 US6648075B2 (en) | 2001-07-13 | 2001-07-13 | Method and apparatus for expandable liner hanger with bypass |
| PCT/GB2002/003268 WO2003006790A1 (en) | 2001-07-13 | 2002-07-15 | Expandable liner hanger with bypass |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2626487A Division CA2626487C (en) | 2001-07-13 | 2002-07-15 | Expandable liner hanger with bypass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2450924A1 CA2450924A1 (en) | 2003-01-23 |
| CA2450924C true CA2450924C (en) | 2009-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2626487A Expired - Fee Related CA2626487C (en) | 2001-07-13 | 2002-07-15 | Expandable liner hanger with bypass |
| CA002450924A Expired - Fee Related CA2450924C (en) | 2001-07-13 | 2002-07-15 | Expandable liner hanger with bypass |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2626487A Expired - Fee Related CA2626487C (en) | 2001-07-13 | 2002-07-15 | Expandable liner hanger with bypass |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US6648075B2 (en) |
| CA (2) | CA2626487C (en) |
| GB (1) | GB2392189B8 (en) |
| WO (1) | WO2003006790A1 (en) |
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-
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- 2001-07-13 US US09/904,735 patent/US6648075B2/en not_active Expired - Lifetime
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2002
- 2002-07-15 WO PCT/GB2002/003268 patent/WO2003006790A1/en not_active Application Discontinuation
- 2002-07-15 CA CA2626487A patent/CA2626487C/en not_active Expired - Fee Related
- 2002-07-15 GB GB0324564A patent/GB2392189B8/en not_active Expired - Fee Related
- 2002-07-15 CA CA002450924A patent/CA2450924C/en not_active Expired - Fee Related
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2003
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2005
- 2005-06-28 US US11/168,803 patent/US7048065B2/en not_active Expired - Fee Related
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| US20030047320A1 (en) | 2003-03-13 |
| GB2392189B8 (en) | 2005-10-20 |
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| GB2392189A8 (en) | 2005-10-20 |
| CA2626487C (en) | 2011-01-25 |
| US7048065B2 (en) | 2006-05-23 |
| GB2392189B (en) | 2005-03-02 |
| US20050236162A1 (en) | 2005-10-27 |
| US20040099423A1 (en) | 2004-05-27 |
| CA2450924A1 (en) | 2003-01-23 |
| CA2626487A1 (en) | 2003-01-23 |
| US6920934B2 (en) | 2005-07-26 |
| US6648075B2 (en) | 2003-11-18 |
| GB2392189A (en) | 2004-02-25 |
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| EEER | Examination request | ||
| MKLA | Lapsed |
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