US20100175888A1 - Downhole Device Actuator and Method - Google Patents
Downhole Device Actuator and Method Download PDFInfo
- Publication number
- US20100175888A1 US20100175888A1 US12/689,787 US68978710A US2010175888A1 US 20100175888 A1 US20100175888 A1 US 20100175888A1 US 68978710 A US68978710 A US 68978710A US 2010175888 A1 US2010175888 A1 US 2010175888A1
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- outer sleeve
- collar
- tubular segment
- energy storage
- string
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Images
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1014—Flexible or expansible centering means, e.g. with pistons pressing against the wall of the well
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1042—Elastomer protector or centering means
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1078—Stabilisers or centralisers for casing, tubing or drill pipes
-
- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
- E21B17/206—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with conductors, e.g. electrical, optical
-
- 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
- E21B23/06—Apparatus for displacing, setting, locking, releasing, or removing tools, packers or the like in the boreholes or wells for setting packers
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
Definitions
- This application relates to methods and devices for downhole operations in earthen boreholes. More specifically, this application relates to actuating a device coupled to a tubular string and run into an earthen borehole.
- a tubular string typically called a drill string
- a tubular string typically called a casing string
- Some boreholes may be extended in a step-wise manner, and additional strings of casing are cemented in the borehole as part of each step.
- a tubular string may be installed within the bore of the cemented casing string to facilitate, for example, the recovery of oil and/or gas from penetrated geologic formations.
- Various devices may be coupled to a tubular string and actuated downhole to facilitate their installation. These devices are typically actuated after being run into and positioned within a borehole, e.g., in a desired location therein.
- bow spring centralizers may be used to position a casing string within a borehole for a subsequent cementing step.
- Bow spring centralizers may be disposed on a casing string at spaced intervals to provide an annulus between the casing string and the borehole.
- Cement slurry may be displaced through the bore of the casing string and into the annulus to form a protective cement liner therein.
- more robust bow springs may be needed to provide sufficient stand-off, but more robust bow springs will increase frictional resistance to movement of the casing string through the borehole.
- centralizers e.g., bow spring centralizers
- the retracted centralizers may then be deployed at a targeted interval, e.g., to provide the desired stand-off between the casing string and the borehole.
- a challenge is presented in actuating the stand-off portion (e.g., bow spring) of the centralizers from the retracted or collapsed mode to a deployed mode without compromising the integrity of the casing string.
- the centralizers are substantially inaccessible because they are disposed within a narrow annulus between the casing string and the borehole.
- One attempted solution provides a method of restraining a centralizer installed on a casing string in a collapsed mode using one or more dissolvable restraining bands, and then dissolving the bands downhole using a strong acid, such as fluoric acid, circulated into the annulus. This solution is disfavored because the acid is dangerous to handle at the surface and can damage critical components in the borehole.
- a packer may be used to seal off an annulus between two tubular strings such as, for example, an annulus between an installed casing string and a production string disposed within the bore of the casing string. The pressure in the annulus may be monitored so that a leak in the casing string and/or production string can be readily detected, e.g., for diagnoses and/or repair.
- a packer may be coupled to a tubular string and run into a borehole in a retracted mode and then expanded, e.g., to an isolating mode downhole. As above, a challenge is presented in actuating the packer from the retracted mode to the isolating mode without compromising the integrity of the pipe string.
- What is needed is an actuator that can be disposed onto a tubular string, adjacent to a device, run into a borehole and then reliably activated to actuate the device without compromising the integrity of the tubular string to which it is coupled.
- an actuation system comprises an outer sleeve threadedly received on a threaded portion of a tubular segment between an energy storage member, such as, but not limited to, a spring, e.g., a compression spring, which may be in a charged (or compressed) mode to store energy therein, and an actuatable device.
- a transfer device may be run into the bore of the tubular segment and rotated to activate, or “trigger,” the actuator.
- the outer sleeve of the actuator engages and manipulates the adjacent device using the energy provided from the energy storage member, e.g., an expanding compression spring.
- a transfer device may be used to enable a magnetic clutch to activate the actuator.
- an actuator may be received on a tubular segment adjacent to an actuatable device.
- the actuator may comprise an energy storage member, such as, a compression spring, having a bore received onto the tubular segment and restrained in a charged (or compressed) mode by an outer sleeve threadedly received on an adjacent threaded and non-magnetic portion of the tubular segment.
- a magnet is coupled to the outer sleeve, and a second magnet is coupled to an inner pipe string and run into the bore of the tubular segment and into the bore of the outer sleeve to form a magnetic clutch.
- Rotation of the inner pipe string transfers torque to the outer sleeve through the magnetic clutch.
- the outer sleeve may be rotated from threaded engagement with the tubular segment to release the energy storage member (e.g., the compression spring) to a discharged (e.g., an expanded) mode.
- the energy storage member displaces the outer sleeve to engage and actuate the adjacent device.
- Energy storage members that can be used in this application may include, without limitation, a spring (e.g., compression spring or a coil spring) and/or a fluidic cylinder or other chamber and/or other members to convert potential energy to kinetic energy, e.g., including the use of gravitational force.
- the inner pipe string may serve dual purposes, activating the actuator and pumping fluid to the borehole, such as, an acid to stimulate a formation face, a pressurized fluid to a portion of the borehole to test the seal of a packer or cement slurry. More information relating to an inner pipe string of the kind that can facilitate certain embodiments of the system, method and actuator disclosed herein is available from Davis-Lynch, Inc. of Pearland, Tex., USA.
- an actuator and/or the actuatable device may be protected from unwanted engagement with the borehole by a centralizer (or centralizers) coupled to the tubular segment adjacent to the actuator and/or the device.
- a centralizer or centralizers
- an actuator and an adjacent actuatable device are protected from unwanted contact with the borehole by straddling both with a pair of centralizers to provide stand-off between the tubular string and the borehole. It should be understood that the actuator may be more exposed to engagement with the borehole in curved or irregular sections of the borehole.
- An embodiment of a method of using an actuator to actuate a downhole device disposed on a tubular string and run into a borehole includes the steps of: receiving a device on a non-magnetic tubular segment having an adjacent externally threaded portion; threadedly receiving an outer sleeve comprising a magnet on the threaded portion of the tubular segment; receiving a compression spring restrained in a compressed mode on the tubular segment by engagement with the outer sleeve; making-up the tubular segment into a tubular string; running the tubular string into a borehole to form an annulus between the outer sleeve and the borehole; rotating the outer sleeve from threaded engagement with the tubular string using a magnetic clutch; releasing the compression spring from the compressed position to expand and displace the outer sleeve to actuate the adjacent device.
- Another embodiment of the method to actuate a device on a tubular string run into a borehole comprises the steps of: receiving an actuatable device on a tubular segment; threadedly receiving an outer sleeve having a magnet on an adjacent threaded portion of a non-magnetic portion of the tubular segment; receiving a compression spring in a compressed mode onto the tubular segment adjacent the outer sleeve; making-up the tubular segment into a tubular string with a tag-in receptacle aligned with the bore of the tubular string; running the tubular string into a borehole; coupling a portion of a torque transfer device having a second magnet to an inner pipe string; running the inner pipe string into the bores of the tubular segment and the outer sleeve; sealably engaging the inner pipe string with the tag-in receptacle to position the torque transfer device within the outer sleeve to form a magnetic clutch; rotating the inner pipe string to rotate the outer sleeve from threaded engagement
- a magnetic clutch is formed by positioning the second magnet on the inner pipe string proximal the magnet on the outer sleeve to form a magnetic clutch.
- the interaction of the magnets enables transfer of torque from the inner pipe string to the outer sleeve to rotate the outer sleeve and thereby threadedly disengage the outer sleeve from the externally threaded portion of the tubular string.
- a plurality of second magnets may be coupled to the inner pipe string in a first pattern to interact with a plurality of magnets coupled to the outer sleeve in a coincident pattern.
- an outer sleeve having a magnet and an inner pipe string having a second magnet may be used to form a magnetic clutch and to actuate, operate or otherwise magnetically engage mechanisms other than the threadedly engaged outer sleeve described herein.
- the inner string may be manipulated along an axis (e.g., longitudinally manipulated) of the tubular string to move a tab (e.g., within the inner sleeve) into or from a slot (e.g., on the exterior of the tubular string) to couple or decouple one component to or from the other.
- the tab and the slot may be juxtaposed so that the tab is on the tubular string and the slot is within the outer sleeve.
- Such axial manipulation may be used independently of or in conjunction with other uses of the magnetic clutch disclosed herein.
- FIG. 1 is an elevation view of an embodiment of the actuator in a run-in mode and disposed on a tubular segment adjacent to a centralizer having flexible ribs.
- FIG. 2 is an elevation view of the actuator of FIG. 1 in an activated mode to actuate the centralizer.
- FIG. 3 is an elevation view of the apparatus of FIG. 1 with an inner pipe string and torque transfer device superimposed thereon to illustrate a magnetic clutch.
- FIG. 3A is an elevation view of an embodiment of a transfer device on an inner pipe string and a plurality of magnets coupled to the torque transfer device to interact with the plurality of magnets coupled to the outer sleeve of FIG. 3 .
- FIG. 4A is an elevation section view of an actuatable packer having a packing member received between a first collar and a second collar adjacent the outer sleeve of the actuator.
- FIG. 4B is the packer of FIG. 4A after the outer sleeve of the actuator displaces the second collar towards the first collar to radially expand the packing member.
- FIG. 5A is an elevation section view of a valve having a closure sleeve movably received between the outer sleeve of the actuator and a back-up spring and in a closed position to cover fluid ports in the tubular string.
- FIG. 5B is the view of FIG. 5A after the outer sleeve of the actuator displaces the closure sleeve from the closed position to an open position to permit fluid flow through the fluid ports.
- FIG. 1 is an elevation view of an embodiment of an actuator 5 in a run-in mode and disposed on a non-magnetic tubular segment 8 adjacent to an actuatable centralizer 9 having flexible ribs 16 , e.g., ribs in a collapsed position.
- the illustrated actuator 5 comprises a compression spring 7 and an adjacent outer sleeve 10 comprising a plurality of magnets 48 B and an internally threaded portion 10 A (shown in FIG. 1 in dotted lines) threadedly received on an externally threaded portion 8 A (also shown in dotted lines) of the tubular segment 8 .
- Energy storage member is depicted as a compression spring 7 which is also illustrated in a charged or compressed (run-in) mode to store energy therein, and the compression spring 7 is restrained in the compressed mode between a collar 22 , e.g., a stop collar as known to one of ordinary skill in the art, and the outer sleeve 10 .
- a thrust bearing 30 may be disposed intermediate the compressed spring 7 and the outer sleeve 10 to limit friction resistance to rotation of the outer sleeve 10 relative to the compressed spring 7 .
- the actuator 5 is shown received on a tubular segment 8 adjacent to a centralizer 9 for purposes of illustration only. It should be understood that the actuator 5 may be used in conjunction with a variety of actuatable devices.
- the centralizer 9 disposed adjacent to the outer sleeve 10 in FIG. 1 comprises a plurality of ribs 16 coupled between a first collar 12 and a second, e.g., moving, collar 14 that is adjacent to, but spaced from, the outer sleeve 10 of the actuator 5 .
- the ribs 16 of the centralizer 9 are shown in FIG. 1 in a substantially flattened configuration.
- a gap 11 may separate the second collar 14 of the centralizer 9 from engagement with the outer sleeve 10 of the actuator 5 . While FIG.
- FIG. 1 illustrates the first collar 12 of the centralizer 9 disposed adjacent to a stop collar 20
- the stop collar 20 may be integrally formed with or coupled to the first collar 12 to, for example, maintain a gap 11 between the outer sleeve 10 of the actuator 5 and the centralizer 9
- a stop collar 13 may be positioned between the first collar 12 and the second collar 14 to limit expansion of the centralizer 9 as described below in connection with FIG. 2 .
- FIG. 2 is an elevation view of the actuator 5 ′ of FIG. 1 in an activated or released mode to actuate the adjacent centralizer 9 ′ to a deployed mode.
- the outer sleeve 10 ′ is shown axially displaced after being rotated from threaded engagement with the non-magnetic tubular segment 8 .
- the outer sleeve 10 of FIG. 1 is released to move along the tubular segment 8 in response to force applied by the compression spring 7 to the position shown in FIG. 2 .
- the outer sleeve 10 ′ is shown in FIG.
- FIG. 2 after engaging the second collar 14 ′ at sleeve end 10 B and displacing the second collar 14 toward the first collar 12 to a position corresponding to a deployed mode of the centralizer 9 ′.
- the first collar 12 of the centralizer 9 ′ is restrained against movement by stop collar 20 .
- the ribs 16 ′ are shown in FIG. 2 in a deployed mode, e.g., extended, to provide stand-off between the tubular segment 8 and the wall 4 A of the borehole 4 .
- the displacement of the outer sleeve 10 ′ from its position in FIG. 1 corresponds to the separation between the interior threads 10 A of the outer sleeve 10 ′ from the externally threaded portion 8 A of the non-magnetic tubular portion 8 illustrated in FIG. 2 .
- FIG. 3 is an elevation view of the actuator of FIG. 1 with the position of an inner pipe string superimposed thereon to illustrate a magnetic clutch.
- the magnetic clutch illustrated in FIGS. 3 and 3A comprises a plurality of magnets 48 B coupled to the outer sleeve 10 (see FIG. 3 ) and a transfer device 34 comprising a plurality of magnets 48 A coupled to the inner pipe string 36 (e.g., a magnet retainer 46 in FIG. 3A ).
- the transfer device 34 illustrated in FIG. 3A (and shown in dotted lines in an engaged position within the outer sleeve 10 in FIG. 3 ) magnetically couples the outer sleeve 10 to the inner pipe string 36 to provide a magnetic clutch.
- Rotation of the inner pipe string 36 transfers torque to the outer sleeve 10 through the magnetic clutch, and the magnetic interaction is enabled by a non-magnetic tubular segment 8 through which the magnetic interaction occurs.
- the threaded interface between the externally threaded portion 8 A of the tubular segment 8 and the internally threaded portion 10 A of the outer sleeve 10 is exaggerated in the illustration of FIGS. 1-3 .
- These threads may be fine threads having a small pitch and a large thread count (threads per inch or cm) to minimize the torque required to threadedly disengage the outer sleeve 10 from the tubular segment 8 .
- the magnets 48 B of the outer sleeve 10 in the embodiment illustrated in FIG. 3 are arranged in a generally columnar pattern.
- a variety of arrangements of the magnets 48 B may be used, and the arrangement illustrated in FIG. 3 is but an example of how the magnet(s) 48 B might be arranged on the outer sleeve 10 .
- three separate columnar arrangements of magnets may be angularly distributed, e.g., at 120 degree intervals.
- the magnets 48 A on the inner pipe string 36 may be coupled to the magnet carrier 46 of FIG. 3A in an arrangement generally coinciding with the arrangement of the magnets 48 B on the outer sleeve 10 of FIG. 3 .
- the inner pipe string 36 may comprise a bore (not shown in FIG. 3A ) through which a fluid, for example, a cement slurry, an acid or a pressurized fluid, may be provided to an end (not shown in FIG. 3A ) of a tubular string into which the tubular segment 8 is included.
- the transfer device 34 of FIG. 3A may include a first spacer 43 A and/or a second spacer 43 B straddling the magnet carrier 46 to radially position the magnets 48 A within the bore of the non-magnetic tubular segment 8 (see FIG. 3 ) when the inner pipe string 36 is run into the tubular segment 8 .
- the first and/or second spacers 43 A, 43 B are shown in FIG. 3A as generally triangular in shape, but may comprise a variety of shapes without loss of function.
- the actuator 5 described above in connection with FIGS. 1 through 3A may be used to actuate a variety of devices used in downhole operations.
- the energy stored in the compression spring 7 of the actuator 5 and released upon activation to displace the outer sleeve 10 as disclosed above may be used to actuate, for example, a centralizer 9 , as shown in FIGS. 1 and 2 , a packer 6 (as discussed in more detail in relation to FIGS. 4A and 4B below), a cement basket, a casing hanger, an openable fluid port (as discussed in more detail in relation to FIGS. 5A and 5B below), and many other actuatable devices.
- the device to be actuated may be positioned to minimize or prevent frictional resistance to rotation of the outer sleeve.
- FIGS. 1 and 3 illustrate a gap 11 that may be disposed between the moving collar 14 of the centralizer 9 and the outer sleeve 10 of the actuator 5 .
- the centralizer 9 may be restrained from sliding on the non-magnetic tubular segment 8 to maintain a gap 11 and prevent the device which is, in the illustrations in FIGS. 1 and 3 , a centralizer 9 , from frictionally engaging the outer sleeve 10 as it rotates toward threaded disengagement from the tubular segment 8 .
- FIGS. 1 and 3 illustrate a gap 11 that may be disposed between the moving collar 14 of the centralizer 9 and the outer sleeve 10 of the actuator 5 .
- the centralizer 9 may be restrained from sliding on the non-magnetic tubular segment 8 to maintain a gap 11 and prevent the device which is, in the illustrations in FIGS. 1 and 3 , a centralizer 9
- FIG. 1 and 3 illustrate a slightly bowed configuration of the ribs 16 of the centralizer 9 in the collapsed or retracted mode to ensure that the ribs 16 , upon actuation by the actuator (see element 5 in FIGS. 1 and 3 ), deploy to the bowed mode illustrated in FIG. 2 .
- straight ribs could load upon engagement by the outer sleeve 10 in a compressive mode, like a column, and thereby prevent full expansion of the compression spring 7 (see FIG. 2 ).
- FIG. 4A is a sectional elevation view of a packer 6 having a generally sleeve-shaped packing member 60 received onto the tubular segment 8 between a first collar 40 and a moving collar 42 adjacent the outer sleeve 10 .
- the packing member 60 may be, for example, but without limitation, an elastic polymer, rubber, or some other resilient, solid material.
- the tubular segment 8 of FIG. 4A is illustrated as threadedly included within a tubular string disposed within a larger tubular string 2 having an interior bore 2 A.
- the packing member 60 of the packer 6 is illustrated in FIG. 4A in its retracted mode to allow fluid communication between an uphole portion 12 A of the borehole 12 above the packer 6 to a downhole portion 12 B below the packer 6 .
- a gap 11 may be disposed between the moving collar 42 of the packer 6 and the outer sleeve 10 of the actuator 5 to prevent the moving collar 42 from frictional engagement with the outer sleeve 10 when the outer sleeve 10 is rotated to threadedly disengage the interior threads 10 A from the threaded portion 8 A of the non-magnetic tubular segment 8 to release the compression spring 7 to move the outer sleeve 10 .
- FIG. 4B is the packer of FIG. 4A after the outer sleeve 10 ′ threadedly disengages the tubular segment 8 and displaces the second collar 42 ′ against the packing member 60 ′ to close the gap 11 ′ and axially compress the packing member 60 ′ between the first collar 40 and the second, e.g., moving collar 42 ′ to actuate the packer 6 ′ to an expanded mode.
- the packing member 60 ′ may thus be radially expanded to seal against the interior bore 2 A of the larger tubular string 2 to isolate the uphole annular portion 12 A from the downhole annular portion 12 B.
- the magnet retainer 46 generally remains in its position relative to the larger tubular string and the non-magnetic tubular portion 8 as the outer sleeve 10 ′ moves along the tubular segment 8 under the force of the compression spring 7 ′ a distance corresponding to the separation between the interior threads 10 A of the outer sleeve 10 ′ from the threaded portion 8 A of the non-magnetic tubular segment 8 .
- FIG. 5A is an elevation view of a valve 15 having a closure sleeve 21 movably received between the outer sleeve 10 and a back-up spring 27 and in a closed position to cover fluid ports 8 B in the tubular segment 8 .
- a pusher sleeve 19 having flow passages 19 A is disposed intermediate the closure sleeve 21 and the outer sleeve 10 .
- a gap 11 may be disposed between the pusher sleeve 19 and the outer sleeve 10 .
- FIG. 5B is the elevation view of FIG. 5A after the outer sleeve 10 ′ is released to displace the closure sleeve 21 ′ along the tubular segment 8 from the closed position to an open position to permit fluid flow through the fluid ports 8 B.
- the back-up spring 27 ′ is shown in a compressed mode as acted upon by the larger compression spring 7 ′ through the outer sleeve 10 ′, pusher sleeve 19 ′, and closure sleeve 21 ′.
- the flow passages 19 A of the pusher sleeve 19 ′ are aligned with the fluid ports 8 B in the tubular segment 8 to establish fluid communication between the bore 8 C of the tubular segment 8 and the annulus 2 B between the tubular segment 8 and the wall 2 A of the larger tubular 2 .
- embodiments of the system, actuator and the method of using the actuator may be used in an open borehole, as illustrated in FIGS. 1 and 2 , or in a cased hole, as illustrated in FIGS. 4A through 5B , to simultaneously or separately actuate a plurality of actuatable devices of the same or different kinds that may be coupled to a tubular string and run into a borehole.
- the number of rotations of the inner pipe string, after the magnetic clutch is formed by positioning of the inner pipe string can be used to vary the sequence or timing of actuation of a plurality of devices coupled to the tubular string.
- an inner pipe string could be rotated to actuate a first actuatable device, then operations could commence, followed by further rotation to actuate a second actuatable device.
- the magnets used in embodiments of the invention may or may not comprise rare earth magnets or electromagnets.
- a non-magnetic tubular segment 8 is provided to enable the magnetic interaction between the magnets 48 A on the inner pipe string 36 and the magnets 48 B on the outer sleeve 10 , and the non-magnetic tubular segment 8 may be, for example, stainless steel. It should be understood that embodiments of the invention using multiple outer sleeves driven, using magnetic couplings between the inner pipe string and the outer sleeves, may continue to effectively function notwithstanding disablement of one or more outer sleeves due to, for example, contact with the borehole.
- an outer sleeve engage the borehole, for example, at a borehole irregularity or deviation, the inner string is not disabled from continued rotation within the bore of the tubular string, and other outer sleeves may continue to rotate to threaded disengagement in response to rotation of the inner pipe string without damage to or substantial impairment of the intended benefit provided by the invention.
- Non-magnetic refers to a substance that is substantially unaffected by, or does not substantially interfere with, a magnetic field.
- Non-limiting examples of non-magnetic substances include polymers, stainless steel, copper (e.g., nickel-copper alloy), aluminum and combinations thereof.
- the use of the term “non-magnetic” does not necessarily require the absolute absence of any substance that may be affected by or interfere with a magnetic field.
- a non-magnetic tubular segment it is within the scope of the invention for a non-magnetic tubular segment to have articles disposed thereon or included therein that are sufficiently small so as not to substantially affect or interfere with a magnetic field.
Abstract
Description
- This application is a continuation-in-part application depending from and claiming benefit of priority to U.S. patent application Ser. No. 12/542,494 filed on Aug. 17, 2009, which is a non-provisional application depending from and claiming benefit of priority to U.S. Provisional Application No. 61/089,461 filed on Aug. 15, 2008.
- This application relates to methods and devices for downhole operations in earthen boreholes. More specifically, this application relates to actuating a device coupled to a tubular string and run into an earthen borehole.
- It is conventional practice to drill a borehole into the earth using a tubular string, typically called a drill string, extending from a rig at the earth's surface, and to cement a tubular string, typically called a casing string, in the borehole to prevent collapse and stabilize the borehole. Some boreholes may be extended in a step-wise manner, and additional strings of casing are cemented in the borehole as part of each step. In some completed boreholes, a tubular string may be installed within the bore of the cemented casing string to facilitate, for example, the recovery of oil and/or gas from penetrated geologic formations.
- Various devices may be coupled to a tubular string and actuated downhole to facilitate their installation. These devices are typically actuated after being run into and positioned within a borehole, e.g., in a desired location therein.
- For example, but not by way of limitation, bow spring centralizers may be used to position a casing string within a borehole for a subsequent cementing step. Bow spring centralizers may be disposed on a casing string at spaced intervals to provide an annulus between the casing string and the borehole. Cement slurry may be displaced through the bore of the casing string and into the annulus to form a protective cement liner therein. In boreholes having a horizontal or highly deviated portion, more robust bow springs may be needed to provide sufficient stand-off, but more robust bow springs will increase frictional resistance to movement of the casing string through the borehole.
- One solution is to run centralizers, e.g., bow spring centralizers, on the casing string in a retracted (e.g., collapsed) mode to reduce the frictional resistance to movement of the casing string through the borehole. The retracted centralizers may then be deployed at a targeted interval, e.g., to provide the desired stand-off between the casing string and the borehole. Because the centralizers are installed on the exterior of the casing string, a challenge is presented in actuating the stand-off portion (e.g., bow spring) of the centralizers from the retracted or collapsed mode to a deployed mode without compromising the integrity of the casing string. The centralizers are substantially inaccessible because they are disposed within a narrow annulus between the casing string and the borehole. One attempted solution provides a method of restraining a centralizer installed on a casing string in a collapsed mode using one or more dissolvable restraining bands, and then dissolving the bands downhole using a strong acid, such as fluoric acid, circulated into the annulus. This solution is disfavored because the acid is dangerous to handle at the surface and can damage critical components in the borehole.
- Another example of a device to be actuated after it is positioned in a borehole is a packer. A packer may be used to seal off an annulus between two tubular strings such as, for example, an annulus between an installed casing string and a production string disposed within the bore of the casing string. The pressure in the annulus may be monitored so that a leak in the casing string and/or production string can be readily detected, e.g., for diagnoses and/or repair. A packer may be coupled to a tubular string and run into a borehole in a retracted mode and then expanded, e.g., to an isolating mode downhole. As above, a challenge is presented in actuating the packer from the retracted mode to the isolating mode without compromising the integrity of the pipe string.
- What is needed is an actuator that can be disposed onto a tubular string, adjacent to a device, run into a borehole and then reliably activated to actuate the device without compromising the integrity of the tubular string to which it is coupled.
- Embodiments of the invention disclosed herein satisfy the above-stated needs. For purposes of the disclosure that follows, the terms “tubular”, “tubular string” and “tubular segment” include, but are not limited to, a casing segment and/or a casing string.
- One embodiment of an actuation system comprises an outer sleeve threadedly received on a threaded portion of a tubular segment between an energy storage member, such as, but not limited to, a spring, e.g., a compression spring, which may be in a charged (or compressed) mode to store energy therein, and an actuatable device. A transfer device may be run into the bore of the tubular segment and rotated to activate, or “trigger,” the actuator. Upon activation, the outer sleeve of the actuator engages and manipulates the adjacent device using the energy provided from the energy storage member, e.g., an expanding compression spring.
- In one embodiment of the system, a transfer device may be used to enable a magnetic clutch to activate the actuator. For example, an actuator may be received on a tubular segment adjacent to an actuatable device. The actuator may comprise an energy storage member, such as, a compression spring, having a bore received onto the tubular segment and restrained in a charged (or compressed) mode by an outer sleeve threadedly received on an adjacent threaded and non-magnetic portion of the tubular segment. A magnet is coupled to the outer sleeve, and a second magnet is coupled to an inner pipe string and run into the bore of the tubular segment and into the bore of the outer sleeve to form a magnetic clutch. Rotation of the inner pipe string transfers torque to the outer sleeve through the magnetic clutch. The outer sleeve may be rotated from threaded engagement with the tubular segment to release the energy storage member (e.g., the compression spring) to a discharged (e.g., an expanded) mode. The energy storage member displaces the outer sleeve to engage and actuate the adjacent device. Energy storage members that can be used in this application may include, without limitation, a spring (e.g., compression spring or a coil spring) and/or a fluidic cylinder or other chamber and/or other members to convert potential energy to kinetic energy, e.g., including the use of gravitational force.
- In one embodiment, the inner pipe string may serve dual purposes, activating the actuator and pumping fluid to the borehole, such as, an acid to stimulate a formation face, a pressurized fluid to a portion of the borehole to test the seal of a packer or cement slurry. More information relating to an inner pipe string of the kind that can facilitate certain embodiments of the system, method and actuator disclosed herein is available from Davis-Lynch, Inc. of Pearland, Tex., USA.
- In one embodiment, an actuator and/or the actuatable device may be protected from unwanted engagement with the borehole by a centralizer (or centralizers) coupled to the tubular segment adjacent to the actuator and/or the device. For example, in one embodiment, an actuator and an adjacent actuatable device are protected from unwanted contact with the borehole by straddling both with a pair of centralizers to provide stand-off between the tubular string and the borehole. It should be understood that the actuator may be more exposed to engagement with the borehole in curved or irregular sections of the borehole.
- An embodiment of a method of using an actuator to actuate a downhole device disposed on a tubular string and run into a borehole includes the steps of: receiving a device on a non-magnetic tubular segment having an adjacent externally threaded portion; threadedly receiving an outer sleeve comprising a magnet on the threaded portion of the tubular segment; receiving a compression spring restrained in a compressed mode on the tubular segment by engagement with the outer sleeve; making-up the tubular segment into a tubular string; running the tubular string into a borehole to form an annulus between the outer sleeve and the borehole; rotating the outer sleeve from threaded engagement with the tubular string using a magnetic clutch; releasing the compression spring from the compressed position to expand and displace the outer sleeve to actuate the adjacent device.
- Another embodiment of the method to actuate a device on a tubular string run into a borehole comprises the steps of: receiving an actuatable device on a tubular segment; threadedly receiving an outer sleeve having a magnet on an adjacent threaded portion of a non-magnetic portion of the tubular segment; receiving a compression spring in a compressed mode onto the tubular segment adjacent the outer sleeve; making-up the tubular segment into a tubular string with a tag-in receptacle aligned with the bore of the tubular string; running the tubular string into a borehole; coupling a portion of a torque transfer device having a second magnet to an inner pipe string; running the inner pipe string into the bores of the tubular segment and the outer sleeve; sealably engaging the inner pipe string with the tag-in receptacle to position the torque transfer device within the outer sleeve to form a magnetic clutch; rotating the inner pipe string to rotate the outer sleeve from threaded engagement with the tubular string; releasing the compression spring from the compressed mode to expand and actuate the adjacent device. In one embodiment, a magnetic clutch is formed by positioning the second magnet on the inner pipe string proximal the magnet on the outer sleeve to form a magnetic clutch. The interaction of the magnets enables transfer of torque from the inner pipe string to the outer sleeve to rotate the outer sleeve and thereby threadedly disengage the outer sleeve from the externally threaded portion of the tubular string. A plurality of second magnets may be coupled to the inner pipe string in a first pattern to interact with a plurality of magnets coupled to the outer sleeve in a coincident pattern.
- It should be noted that an outer sleeve having a magnet and an inner pipe string having a second magnet may be used to form a magnetic clutch and to actuate, operate or otherwise magnetically engage mechanisms other than the threadedly engaged outer sleeve described herein. For example, but not by way of limitation, the inner string may be manipulated along an axis (e.g., longitudinally manipulated) of the tubular string to move a tab (e.g., within the inner sleeve) into or from a slot (e.g., on the exterior of the tubular string) to couple or decouple one component to or from the other. The tab and the slot may be juxtaposed so that the tab is on the tubular string and the slot is within the outer sleeve. Such axial manipulation may be used independently of or in conjunction with other uses of the magnetic clutch disclosed herein.
- The foregoing and other features and aspects will be best understood with reference to the following detailed description of embodiments of the invention, when read in conjunction with the accompanying drawings, wherein:
-
FIG. 1 is an elevation view of an embodiment of the actuator in a run-in mode and disposed on a tubular segment adjacent to a centralizer having flexible ribs. -
FIG. 2 is an elevation view of the actuator ofFIG. 1 in an activated mode to actuate the centralizer. -
FIG. 3 is an elevation view of the apparatus ofFIG. 1 with an inner pipe string and torque transfer device superimposed thereon to illustrate a magnetic clutch. -
FIG. 3A is an elevation view of an embodiment of a transfer device on an inner pipe string and a plurality of magnets coupled to the torque transfer device to interact with the plurality of magnets coupled to the outer sleeve ofFIG. 3 . -
FIG. 4A is an elevation section view of an actuatable packer having a packing member received between a first collar and a second collar adjacent the outer sleeve of the actuator. -
FIG. 4B is the packer ofFIG. 4A after the outer sleeve of the actuator displaces the second collar towards the first collar to radially expand the packing member. -
FIG. 5A is an elevation section view of a valve having a closure sleeve movably received between the outer sleeve of the actuator and a back-up spring and in a closed position to cover fluid ports in the tubular string. -
FIG. 5B is the view ofFIG. 5A after the outer sleeve of the actuator displaces the closure sleeve from the closed position to an open position to permit fluid flow through the fluid ports. - The following detailed description refers to the above-listed drawings wherein depicted elements are not necessarily shown to scale and wherein like or similar elements are designated by the same reference numeral through the several views.
-
FIG. 1 is an elevation view of an embodiment of anactuator 5 in a run-in mode and disposed on anon-magnetic tubular segment 8 adjacent to anactuatable centralizer 9 havingflexible ribs 16, e.g., ribs in a collapsed position. The illustratedactuator 5 comprises acompression spring 7 and an adjacentouter sleeve 10 comprising a plurality ofmagnets 48B and an internally threadedportion 10A (shown inFIG. 1 in dotted lines) threadedly received on an externally threadedportion 8A (also shown in dotted lines) of thetubular segment 8. Energy storage member is depicted as acompression spring 7 which is also illustrated in a charged or compressed (run-in) mode to store energy therein, and thecompression spring 7 is restrained in the compressed mode between acollar 22, e.g., a stop collar as known to one of ordinary skill in the art, and theouter sleeve 10. Athrust bearing 30 may be disposed intermediate thecompressed spring 7 and theouter sleeve 10 to limit friction resistance to rotation of theouter sleeve 10 relative to thecompressed spring 7. - The
actuator 5 is shown received on atubular segment 8 adjacent to acentralizer 9 for purposes of illustration only. It should be understood that theactuator 5 may be used in conjunction with a variety of actuatable devices. Thecentralizer 9 disposed adjacent to theouter sleeve 10 inFIG. 1 comprises a plurality ofribs 16 coupled between afirst collar 12 and a second, e.g., moving,collar 14 that is adjacent to, but spaced from, theouter sleeve 10 of theactuator 5. Theribs 16 of thecentralizer 9 are shown inFIG. 1 in a substantially flattened configuration. Optionally, agap 11 may separate thesecond collar 14 of thecentralizer 9 from engagement with theouter sleeve 10 of theactuator 5. WhileFIG. 1 illustrates thefirst collar 12 of thecentralizer 9 disposed adjacent to astop collar 20, it should be understood that thestop collar 20 may be integrally formed with or coupled to thefirst collar 12 to, for example, maintain agap 11 between theouter sleeve 10 of theactuator 5 and thecentralizer 9. Optionally, astop collar 13 may be positioned between thefirst collar 12 and thesecond collar 14 to limit expansion of thecentralizer 9 as described below in connection withFIG. 2 . -
FIG. 2 is an elevation view of theactuator 5′ ofFIG. 1 in an activated or released mode to actuate theadjacent centralizer 9′ to a deployed mode. Theouter sleeve 10′ is shown axially displaced after being rotated from threaded engagement with thenon-magnetic tubular segment 8. Upon threaded disengagement, theouter sleeve 10 ofFIG. 1 is released to move along thetubular segment 8 in response to force applied by thecompression spring 7 to the position shown inFIG. 2 . Theouter sleeve 10′ is shown inFIG. 2 after engaging thesecond collar 14′ atsleeve end 10B and displacing thesecond collar 14 toward thefirst collar 12 to a position corresponding to a deployed mode of thecentralizer 9′. Thefirst collar 12 of thecentralizer 9′ is restrained against movement bystop collar 20. Theribs 16′ are shown inFIG. 2 in a deployed mode, e.g., extended, to provide stand-off between thetubular segment 8 and thewall 4A of theborehole 4. The displacement of theouter sleeve 10′ from its position inFIG. 1 corresponds to the separation between theinterior threads 10A of theouter sleeve 10′ from the externally threadedportion 8A of the non-magnetictubular portion 8 illustrated inFIG. 2 . -
FIG. 3 is an elevation view of the actuator ofFIG. 1 with the position of an inner pipe string superimposed thereon to illustrate a magnetic clutch. The magnetic clutch illustrated inFIGS. 3 and 3A comprises a plurality ofmagnets 48B coupled to the outer sleeve 10 (seeFIG. 3 ) and atransfer device 34 comprising a plurality ofmagnets 48A coupled to the inner pipe string 36 (e.g., amagnet retainer 46 inFIG. 3A ). Thetransfer device 34 illustrated inFIG. 3A (and shown in dotted lines in an engaged position within theouter sleeve 10 inFIG. 3 ) magnetically couples theouter sleeve 10 to theinner pipe string 36 to provide a magnetic clutch. Rotation of theinner pipe string 36 transfers torque to theouter sleeve 10 through the magnetic clutch, and the magnetic interaction is enabled by anon-magnetic tubular segment 8 through which the magnetic interaction occurs. The threaded interface between the externally threadedportion 8A of thetubular segment 8 and the internally threadedportion 10A of theouter sleeve 10 is exaggerated in the illustration ofFIGS. 1-3 . These threads may be fine threads having a small pitch and a large thread count (threads per inch or cm) to minimize the torque required to threadedly disengage theouter sleeve 10 from thetubular segment 8. - The
magnets 48B of theouter sleeve 10 in the embodiment illustrated inFIG. 3 are arranged in a generally columnar pattern. A variety of arrangements of themagnets 48B may be used, and the arrangement illustrated inFIG. 3 is but an example of how the magnet(s) 48B might be arranged on theouter sleeve 10. For example, three separate columnar arrangements of magnets may be angularly distributed, e.g., at 120 degree intervals. Themagnets 48A on theinner pipe string 36 may be coupled to themagnet carrier 46 ofFIG. 3A in an arrangement generally coinciding with the arrangement of themagnets 48B on theouter sleeve 10 ofFIG. 3 . In some embodiments, theinner pipe string 36 may comprise a bore (not shown inFIG. 3A ) through which a fluid, for example, a cement slurry, an acid or a pressurized fluid, may be provided to an end (not shown inFIG. 3A ) of a tubular string into which thetubular segment 8 is included. - The
transfer device 34 ofFIG. 3A may include afirst spacer 43A and/or asecond spacer 43B straddling themagnet carrier 46 to radially position themagnets 48A within the bore of the non-magnetic tubular segment 8 (seeFIG. 3 ) when theinner pipe string 36 is run into thetubular segment 8. The first and/orsecond spacers FIG. 3A as generally triangular in shape, but may comprise a variety of shapes without loss of function. - The
actuator 5 described above in connection withFIGS. 1 through 3A may be used to actuate a variety of devices used in downhole operations. The energy stored in thecompression spring 7 of theactuator 5 and released upon activation to displace theouter sleeve 10 as disclosed above may be used to actuate, for example, acentralizer 9, as shown inFIGS. 1 and 2 , a packer 6 (as discussed in more detail in relation toFIGS. 4A and 4B below), a cement basket, a casing hanger, an openable fluid port (as discussed in more detail in relation toFIGS. 5A and 5B below), and many other actuatable devices. - The device to be actuated may be positioned to minimize or prevent frictional resistance to rotation of the outer sleeve. For example,
FIGS. 1 and 3 illustrate agap 11 that may be disposed between the movingcollar 14 of thecentralizer 9 and theouter sleeve 10 of theactuator 5. In one embodiment of the method of using theactuator 5, thecentralizer 9 may be restrained from sliding on thenon-magnetic tubular segment 8 to maintain agap 11 and prevent the device which is, in the illustrations inFIGS. 1 and 3 , acentralizer 9, from frictionally engaging theouter sleeve 10 as it rotates toward threaded disengagement from thetubular segment 8.FIGS. 1 and 3 illustrate a slightly bowed configuration of theribs 16 of thecentralizer 9 in the collapsed or retracted mode to ensure that theribs 16, upon actuation by the actuator (seeelement 5 inFIGS. 1 and 3 ), deploy to the bowed mode illustrated inFIG. 2 . It should be understood that straight ribs could load upon engagement by theouter sleeve 10 in a compressive mode, like a column, and thereby prevent full expansion of the compression spring 7 (seeFIG. 2 ). -
FIG. 4A is a sectional elevation view of apacker 6 having a generally sleeve-shapedpacking member 60 received onto thetubular segment 8 between afirst collar 40 and a movingcollar 42 adjacent theouter sleeve 10. The packingmember 60 may be, for example, but without limitation, an elastic polymer, rubber, or some other resilient, solid material. Thetubular segment 8 ofFIG. 4A is illustrated as threadedly included within a tubular string disposed within a largertubular string 2 having aninterior bore 2A. The packingmember 60 of thepacker 6 is illustrated inFIG. 4A in its retracted mode to allow fluid communication between anuphole portion 12A of theborehole 12 above thepacker 6 to adownhole portion 12B below thepacker 6. Agap 11 may be disposed between the movingcollar 42 of thepacker 6 and theouter sleeve 10 of theactuator 5 to prevent the movingcollar 42 from frictional engagement with theouter sleeve 10 when theouter sleeve 10 is rotated to threadedly disengage theinterior threads 10A from the threadedportion 8A of thenon-magnetic tubular segment 8 to release thecompression spring 7 to move theouter sleeve 10. -
FIG. 4B is the packer ofFIG. 4A after theouter sleeve 10′ threadedly disengages thetubular segment 8 and displaces thesecond collar 42′ against the packingmember 60′ to close thegap 11′ and axially compress the packingmember 60′ between thefirst collar 40 and the second, e.g., movingcollar 42′ to actuate thepacker 6′ to an expanded mode. The packingmember 60′ may thus be radially expanded to seal against theinterior bore 2A of the largertubular string 2 to isolate the upholeannular portion 12A from the downholeannular portion 12B. Themagnet retainer 46 generally remains in its position relative to the larger tubular string and the non-magnetictubular portion 8 as theouter sleeve 10′ moves along thetubular segment 8 under the force of thecompression spring 7′ a distance corresponding to the separation between theinterior threads 10A of theouter sleeve 10′ from the threadedportion 8A of thenon-magnetic tubular segment 8. -
FIG. 5A is an elevation view of avalve 15 having aclosure sleeve 21 movably received between theouter sleeve 10 and a back-upspring 27 and in a closed position to coverfluid ports 8B in thetubular segment 8. In the embodiment shown inFIGS. 5A and 5B , apusher sleeve 19 havingflow passages 19A is disposed intermediate theclosure sleeve 21 and theouter sleeve 10. Optionally, agap 11 may be disposed between thepusher sleeve 19 and theouter sleeve 10. -
FIG. 5B is the elevation view ofFIG. 5A after theouter sleeve 10′ is released to displace theclosure sleeve 21′ along thetubular segment 8 from the closed position to an open position to permit fluid flow through thefluid ports 8B. The back-upspring 27′ is shown in a compressed mode as acted upon by thelarger compression spring 7′ through theouter sleeve 10′,pusher sleeve 19′, andclosure sleeve 21′. Theflow passages 19A of thepusher sleeve 19′ are aligned with thefluid ports 8B in thetubular segment 8 to establish fluid communication between thebore 8C of thetubular segment 8 and theannulus 2B between thetubular segment 8 and thewall 2A of thelarger tubular 2. - It should be understood that embodiments of the system, actuator and the method of using the actuator may be used in an open borehole, as illustrated in
FIGS. 1 and 2 , or in a cased hole, as illustrated inFIGS. 4A through 5B , to simultaneously or separately actuate a plurality of actuatable devices of the same or different kinds that may be coupled to a tubular string and run into a borehole. For example, by manipulating the thread pitch or thread count of one actuator as compared to another, the number of rotations of the inner pipe string, after the magnetic clutch is formed by positioning of the inner pipe string, can be used to vary the sequence or timing of actuation of a plurality of devices coupled to the tubular string. For example, an inner pipe string could be rotated to actuate a first actuatable device, then operations could commence, followed by further rotation to actuate a second actuatable device. - The magnets used in embodiments of the invention may or may not comprise rare earth magnets or electromagnets. A
non-magnetic tubular segment 8 is provided to enable the magnetic interaction between themagnets 48A on theinner pipe string 36 and themagnets 48B on theouter sleeve 10, and thenon-magnetic tubular segment 8 may be, for example, stainless steel. It should be understood that embodiments of the invention using multiple outer sleeves driven, using magnetic couplings between the inner pipe string and the outer sleeves, may continue to effectively function notwithstanding disablement of one or more outer sleeves due to, for example, contact with the borehole. For example, should an outer sleeve engage the borehole, for example, at a borehole irregularity or deviation, the inner string is not disabled from continued rotation within the bore of the tubular string, and other outer sleeves may continue to rotate to threaded disengagement in response to rotation of the inner pipe string without damage to or substantial impairment of the intended benefit provided by the invention. - The terms “comprising,” “including,” and “having,” as used in the claims and specification herein, shall be considered as indicating an open group that may include other elements not specified. The terms “a,” “an,” and the singular forms of words shall be taken to include the plural form of the same words, such that the terms mean that one or more of something is provided. The term “one” or “single” may be used to indicate that one and only one of something is intended. Similarly, other specific integer values, such as “two,” may be used when a specific number of things is intended. The terms “preferably,” “preferred,” “prefer,” “optionally,” “may,” and similar terms are used to indicate that an item, condition or step being referred to is an optional (not required) feature of the invention. “Non-magnetic,” as that term is used herein, refers to a substance that is substantially unaffected by, or does not substantially interfere with, a magnetic field. Non-limiting examples of non-magnetic substances include polymers, stainless steel, copper (e.g., nickel-copper alloy), aluminum and combinations thereof. However, the use of the term “non-magnetic” does not necessarily require the absolute absence of any substance that may be affected by or interfere with a magnetic field. For example, it is within the scope of the invention for a non-magnetic tubular segment to have articles disposed thereon or included therein that are sufficiently small so as not to substantially affect or interfere with a magnetic field.
- From the foregoing detailed description of specific embodiments of the invention, it should be apparent that a system for enhancing the quality of cementing operations that is novel has been disclosed. Although specific embodiments of the system are disclosed herein, this is done solely for the purpose of describing various features and aspects of the invention, and is not intended to be limiting with respect to the scope of the invention. It is contemplated that various substitutions, alterations, and/or modifications, including but not limited to those implementation variations which may have been suggested herein, may be made to the disclosed embodiments without departing from the spirit and scope of the invention as defined by the appended claims which follow.
- While the invention has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (22)
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- 2010-02-10 EP EP10705226A patent/EP2526257A1/en not_active Withdrawn
- 2010-02-10 BR BRPI1004214A patent/BRPI1004214A2/en not_active IP Right Cessation
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US9303305B2 (en) * | 2011-01-28 | 2016-04-05 | Baker Hughes Incorporated | Non-magnetic drill string member with non-magnetic hardfacing and method of making the same |
US20120193148A1 (en) * | 2011-01-28 | 2012-08-02 | Baker Hughes Incorporated | Non-magnetic drill string member with non-magnetic hardfacing and method of making the same |
GB2504009B (en) * | 2011-03-15 | 2018-04-11 | Baker Hughes Inc | Remote subterranean tool activation system |
US9702202B2 (en) * | 2011-07-14 | 2017-07-11 | Halliburton Energy Services, Inc. | Methods and systems for controlling torque transfer from rotating equipment |
US20140318869A1 (en) * | 2011-07-14 | 2014-10-30 | Halliburton Energy Services, Inc. | Methods and systems for controlling torque transfer from rotating equipment |
US9551197B2 (en) * | 2012-02-27 | 2017-01-24 | Donald R. Greenlee | Hydrostatic setting tool |
US20150368995A1 (en) * | 2012-02-27 | 2015-12-24 | Donald R. Greenlee | Hydrostatic Setting Tool |
US10344542B1 (en) | 2013-03-14 | 2019-07-09 | National Technology & Engineering Solutions Of Sandia, Llc | Deployable centralizers |
US9580976B1 (en) | 2013-03-14 | 2017-02-28 | Sandia Corporation | Deployable centralizers |
US9725967B2 (en) | 2013-07-24 | 2017-08-08 | Bp Corporation North America Inc. | Centralizers for centralizing well casings |
CN103806863A (en) * | 2014-01-29 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Hydraulic oscillation centering device |
CN106715825A (en) * | 2014-08-20 | 2017-05-24 | E霍尔斯特股份有限公司 | An apparatus for sealing a bore, a system comprising the apparatus and a method for using the apparatus |
US10364639B2 (en) * | 2014-08-20 | 2019-07-30 | E Holstad Holding As | Apparatus for sealing a bore, a system comprising the apparatus and a method for using apparatus |
US20230024643A1 (en) * | 2019-10-09 | 2023-01-26 | Schlumberger Technology Corporation | Systems for securing a downhole tool to a housing |
US11933114B2 (en) * | 2019-10-09 | 2024-03-19 | Schlumberger Technology Corporation | Systems for securing a downhole tool to a housing |
US11814909B2 (en) * | 2019-10-31 | 2023-11-14 | Schlumberger Technology Corporation | Anti-whirl stabilization tools |
CN114293928A (en) * | 2021-12-28 | 2022-04-08 | 辽宁石油化工大学 | Underground stable joint for plugging operation |
CN115112291A (en) * | 2022-05-20 | 2022-09-27 | 四川中能西控低碳动力装备有限公司 | Double-layer pipeline dynamic air pressure measuring device and method of engine gas supply system |
Also Published As
Publication number | Publication date |
---|---|
WO2011090491A1 (en) | 2011-07-28 |
BRPI1004214A2 (en) | 2017-08-08 |
CA2733290A1 (en) | 2011-08-10 |
EP2526257A1 (en) | 2012-11-28 |
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