WO2003078790A1 - Lining and drilling a wellbore with an expandable bit - Google Patents

Lining and drilling a wellbore with an expandable bit Download PDF

Info

Publication number
WO2003078790A1
WO2003078790A1 PCT/GB2003/001103 GB0301103W WO03078790A1 WO 2003078790 A1 WO2003078790 A1 WO 2003078790A1 GB 0301103 W GB0301103 W GB 0301103W WO 03078790 A1 WO03078790 A1 WO 03078790A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubing
section
bore
lining
drilling
Prior art date
Application number
PCT/GB2003/001103
Other languages
French (fr)
Inventor
Neil Andrew Abercrombie Simpson
Simon John Harrall
Original Assignee
Weatherford/Lamb, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weatherford/Lamb, Inc. filed Critical Weatherford/Lamb, Inc.
Priority to CA002447672A priority Critical patent/CA2447672C/en
Priority to GB0325299A priority patent/GB2393989B/en
Priority to AU2003216821A priority patent/AU2003216821A1/en
Publication of WO2003078790A1 publication Critical patent/WO2003078790A1/en
Priority to NO20034926A priority patent/NO334494B1/en

Links

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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing 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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • 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

Definitions

  • the expander 24 is then returned to the dormant configuration; the sequential activation of the expander 24 and drill bit 22 may be achieved by any appropriate means as will as be apparent to those of skill in the art, such as dropping balls or darts.

Abstract

A method of lining and drilling a bore (10) comprising mounting a first section of bore-lining tubing (20) on the lower end portion of a drill string (18); running the drill string and tubing into a bore having an unlined section and an existing tubing lined section; locating the first tubing section (20) in the unlined section: uncoupling the first tubing section (20) from the drill string (18); and drilling the bore beyond the first tubing section. The bore-lining tubing (20) may include an hanger section overlapping the existing tubing and may be expanded.

Description

LINING AND DRILLING A WELLBORE WITH AN EXPANDABLE BIT
FIELD OF THE INVENTION
This invention relates to an apparatus and method for use in lining and drilling a bore.
BACKGROUND OF THE INVENTION
In the oil and gas exploration and production industry bores are drilled from surface to access subsurface hydrocarbon reservoirs. The bores are typically drilled in sections: a section of bore is drilled using drilling apparatus including a bit mounted on the' end of a string; the drilling apparatus is pulled out of the bore; a section of bore-lining tubing is run into the "open" bore; and the tubing is then cemented or otherwise sealed in the bore by filling the annulus between the tubing and the bore wall with cement slurry. These drilling and lining steps are repeated until the bore is of the required length or depth. Clearly, this can be a time-consuming operation as to drill and line each bore section it is necessary to make up and then dismantle first a drill string and then a running string, both of which may be several thousand metres long. Furthermore, with conventional bore-lining techniques, the outer diameter of each section of bore-lining tubing must be smaller than the inner diameter of the preceding tubing to enable the tubing to be run into the bore. Thus, a step-wise reduction in bore diameter occurs at the transition between each bore section. The reduction in available bore diameter limits the production capabilities of the well, restricts access to the well, and also requires the use of smaller diameter and thus generally less robust drilling apparatus in the lower portions of the well. A further disadvantage also arises in that the upper portions of the bore may have to be drilled to a relatively large diameter, in light of the numerous subsequent diameter reductions that must be accommodated, which increases drilling time and expense.
Some of these disadvantages may be overcome by the use of expandable bore lining tubing, which may be run in through a section of existing tubing and then expanded to a larger diameter. However, to preserve bore diameter it is important that the desired degree of overlap between' adjacent sections is maintained. This may be problematic when, for example, it is not possible to run the tubing to the bottom of the bore. This may occur due to material gathering in the lower end of the bore, or the tubing encountering an unexpected bore diameter restriction.
Another proposal, as described in PCT\GB99\04246 and US 09\469,643 the disclosures of which are incorporated herein by reference, is to form the lower end of the drill string of expandable tubing. Thus, if a problem formation is encountered in the course of a drilling operation, the tubing may be expanded without the delay that would be involved in pulling out the drilling apparatus and then running in and expanding a section of bore-lining tubing. However, with this method, if a problem formation is encountered early in the drilling operation, only a short section of the expandable tubing is utilised to line open bore, and a significant portion of the tubing is located within the existing casing or liner and thus serves no useful purpose, and further restricts the available bore diameter. Alternatively, if no problems are encountered, the length of bore which can be lined is restricted by the length of the expandable tubing previously incorporated in the string.
Furthermore, the expandable tubing which forms the lower end of the drill string as proposed in PCT\GB99\04246 is likely to represent a compromise between the qualities and properties required to withstand the weight and torque. which must be transmitted from surface via the tubing to the drill bit, to allow drilling fluid to be carried to the bit, to have sufficient abrasion resistance to avoid damage from contact with surrounding casing or bore wall, and to allow installation and expansion to create a safe and secure bore lining. SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a method of lining and drilling a bore, the method comprising the steps : mounting a first section of bore-lining tubing on the lower end portion of a drill string; running the drill string and tubing into a bore having an unlined section and an existing tubing lined section; locating the first tubing section in the unlined section; uncoupling the first tubing section from the drill string; and drilling the bore beyond the first tubing section.
The invention also relates to an apparatus for
« implementing the method.
Preferably, the first section of bore-lining tubing is expandable, but may alternatively be non-expandable.
The upper end of the first tubing section may overlap the lower end of the existing tubing, or may be spaced therefrom.
Preferably, a tubing expander is mounted on the string, and is operated to expand the first tubing section. Preferably, the tubing expander is a rotary expander, such as described in applicant's PCT\GB99\04225, the disclosure of which is incorporated herein by reference. Such an expander may operate to produce compressive yield in. the tubing wall, the resulting thinning of the wall resulting in a corresponding increase in tubing.
Alternatively, or in addition, a different expansion mechanism may be utilised, such as an axially movable cone or swage, by means of applied internal pressure, or by a combination of two or more different expansion mechanisms, such as described in applicant's WO 02\081863, the disclosure of which is incorporated herein by reference.
Preferably, a drill bit is mounted to the drill string. Most preferably, the bit is initially located within or above the bore-lining tubing. Preferably, the' bit is configured to drill a larger diameter bore than the initial bit diameter, for example, the bit may be a bi- centre bit or an expandable bit, such that the bit may pass through the first tubing section and then be utilised to drill a bore of larger diameter than the internal diameter of the tubing section.
Preferably, the method includes providing a coupling, typically setting a hanger, to couple the upper end of the first tubing section to the lower end of the existing tubing. Preferably, the coupling is achieved by expanding the upper end of the first tubing into contact with the lower section of the existing tubing, which may also be subject to expansion. Alternatively, or in addition, the lower end of the existing tubing may be adapted to accommodate the expanded upper end of the first tubing by, for example, provision of a larger diameter bell-end or the like.
The first tubing section may be cemented or otherwise sealed in the bore, typically by injecting a slurry or other fluid form of settable material into the annulus between the tubing and the bore wall. If the tubing section is expanded, the expansion may be carried out before or after cementing.
The tubing section may be expanded before, during or after drilling the next bore section.
Following drilling of the next section, the drill string and drill bit may be pulled out of hole and the method repeated using a further tubing section of length corresponding to the unlined drilled bore section.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figures 1 to 7 are schematic illustrations of steps in accordance with a preferred embodiment of the present invention.
DETAILED DESCRIPTION OF THE DRAWINGS
The drawings illustrate stages in the lining and drilling of a bore 10, as may be used to access a subsurface hydrocarbon-bearing formation. Figure 1 illustrates an existing bore 10 which is partially lined with casing 12, and the bore having been extended beyond the casing 12; as illustrated in Figure 1, the lower section of the bore 10 is open, or unlined. It will be noted that the lower end of the casing 12 defines a bell- end 14 of larger diameter than the upper portion of the casing, the purpose of which will become apparent in due course . Figure 2 illustrates lining and drilling apparatus 16 in accordance with an embodiment of an aspect of the invention which has been run into the lower section of the bore 10 on the end of a drill string 18. The apparatus 16 comprises a body 19 which is coupled to the lower end of the drill string 18, a section of expandable tubing 20, an expandable drill bit 22 located within the upper end of the tubing 20, and shown in Figures 2 to 4 in unexpanded configuration, and a tubing expander 24 mounted on the body 19, the expander being initially dormant and providing support for the tubing 20.
The apparatus 16 is located in the bore 10 such that the upper end of the tubing 20 overlaps the lower end of the casing 12, and in particular is located within the casing bell-end 14. As illustrated in Figure 3, the tubing expander 24 is then activated to expand the upper end of the tubing 20 into contact with the casing 12, to create a tubing hanger 30. The preferred expander 24 is a hydraulic fluid-activated rotary expander. Thus, supplying pressurised fluid to the expander 24, via the string 18, urges a set of expansion members radially outwards to deform the upper end of the tubing 20 and form the hanger 30. The string 18 is then rotated from surface, to rotate the apparatus 16, apart from the tubing 20 which is now coupled to the casing 12. The apparatus 16 is then also advanced axially through the tubing 20, enlarging the tubing internal diameter such that it corresponds substantially to the casing internal diameter, as illustrated in Figure 4.
On reaching the lower end of the tubing 20, the drill bit 22 is positioned beyond the end of the tubing 20, and is then expanded to assume its larger diameter configuration, as illustrated in Figure 5.
The expander 24 is then returned to the dormant configuration; the sequential activation of the expander 24 and drill bit 22 may be achieved by any appropriate means as will as be apparent to those of skill in the art, such as dropping balls or darts.
The drill string 18 is then rotated at an appropriate speed for drilling, and drilling fluid is circulated through the string 18 to the bit 22. By applying appropriate weight to the bit 22, the bore 10 is drilled beyond the end of the expanded tubing 20, as illustrated in Figure 6. Once the bore 10 has been extended by the appropriate length, the drill bit 22 is reconfigured to its retracted form and the drilling apparatus 16 pulled out of hole, leaving a further section of cased hole 10a, and a further section of open hole 10b, ready for the lining and drilling process as described above to be repeated.
It will be apparent to those of skill in the art that the above-described method provides for the efficient lining and drilling of a bore, while avoiding the disadvantages of prior art proposals.
It will also be apparent to those of skill in the art that the above-described embodiment is merely exemplary of the present invention, and that various modifications and improvements may be made thereto without departing from the scope of the present invention. For example, in an alternative embodiment the drill bit may initially be mounted to or beyond the lower end of the tubing 20, and the lower end of the drill string adapted to latch with the bit to allow drilling to commence once the tubing 20 has been located in the bore.
In another embodiment, the tubing 20 is sealed in the bore 10 by, for example, circulating a cement slurry into the annulus 40 (Figure 5) between the tubing and the bore wall before or after expansion of the tubing.

Claims

1. A method of lining and drilling a bore, the method comprising the steps: mounting a first section of bore-lining tubing on a drill string; running the drill string and tubing into a bore having an unlined section and a tubing lined section; locating at least part of the first tubing section in the unlined section; and then drilling the bore beyond the first tubing section.
2. The method of claim 1, further comprising locating the first tubing section relative to the existing tubing such that the first tubing section overlaps the existing tubing.
3. The method of claim 2, comprising locating the first tubing section such that an upper end of the first tubing section overlaps a lower end of the existing tubing.
4. The method of claim 1, 2 or 3, further comprising expanding the first section of bore-lining tubing.
5. The method of claim 4, comprising expanding the first section at least in part by application of a mechanical expansion force.
6. The method of claim 4 or 5, further comprising mounting a tubing expander on the string, and operating the tubing expander to expand the first tubing section.
7. The method of claim 5 or 6, comprising expanding the first tubing section by rotary expansion.
8. The method of claim 5, 6 or 7, comprising expanding the first tubing section by advancing an expansion cone axially through the tubing.
9. The method of claim 4, 5, 6, 7 or 8, comprising expanding the first tubing section at least in part by application of fluid pressure force.
10. The method of any of claims 4 to 9, comprising expanding the first filing section by a combination of mechanical and fluid pressure expansion forces.
11. The method of any of the preceding claims, further comprising mounting a drill bit on the drill string.
12. The method of claim 11, comprising initially locating the bit within the first tubing section.
13. The method of claim 11, comprising initially locating the bit above the first tubing section.
14. The method of claim 12 or 13, further comprising passing the bit through the first tubing section and then reconfiguring the bit to drill a bore of larger diameter than the internal diameter of the first tubing section.
15. The method of any of the preceding claims, further comprising setting a hanger to couple the first tubing section to the existing tubing.
16. The method of any of the preceding claims, comprising expanding the first tubing section into contact with the existing tubing.
17. The method of claim 16, further comprising expanding the existing tubing while expanding the first tubing section.
18. The method of claim 16 or 17, further comprising providing existing tubing with a larger diameter lower end to accommodate the expanded upper end of the first tubing section.
19. The method of any of the preceding claims, further comprising sealing the first tubing section in the bore.
20. The method of claim 19, further comprising cementing the first tubing section in the bore.
21. The method of any of the preceding claims, wherein, following drilling of a section of bore beyond the first tubing section, the drill string and drill bit are pulled out of the bore, and the method is then repeated using a further tubing section of length corresponding to the unlined bore section which has been drilled beyond the first tubing section.
22. A method of lining and drilling a bore, the method comprising the steps: mounting bore-lining tubing on a drill string; running the drill string and tubing into a bore having an unlined section; locating at least part of the first tubing section in the unlined section; and then drilling the bore beyond the first tubing section.
23. Apparatus for use in lining and drilling a bore, the apparatus comprising: bore-lining tubing for mounting on a drill string; a drill bit for mounting on the drill string, the bit being initially located within or above the bore-lining tubing and being adapted to pass through the tubing and then to be utilised to drill a bore.
24. The apparatus of claim 23, wherein the drill bit is adapted to drill a bore of larger diameter than the internal diameter of the tubing.
25. The apparatus of claim 23 or 24, wherein the tubing is expandable .
26. The apparatus of. claim 23, 24 or 25, further comprising a tubing expander for mounting on the string, the expander being operable to expand the tubing.
27. The apparatus of claim 26, wherein the tubing expander is a rotary expander.
28. The apparatus of claim 26, wherein the tubing expander is a cone.
29. The apparatus of any of claims 23 to 28, further comprising a coupling adapted for coupling the tubing to tubing previously located in the bore.
30. The apparatus of claim 29, wherein the coupling is activated by expanding the tubing into contact with the tubing previously located in the bore.
31. The apparatus of claim 29 or 30, wherein the coupling is adapted for coupling an upper end of the tubing to a lower end of the tubing located in the bore.
PCT/GB2003/001103 2002-03-16 2003-03-17 Lining and drilling a wellbore with an expandable bit WO2003078790A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002447672A CA2447672C (en) 2002-03-16 2003-03-17 Lining and drilling a wellbore with an expandable bit
GB0325299A GB2393989B (en) 2002-03-16 2003-03-17 Lining and drilling a wellbore with an expandable bit
AU2003216821A AU2003216821A1 (en) 2002-03-16 2003-03-17 Lining and drilling a wellbore with an expandable bit
NO20034926A NO334494B1 (en) 2002-03-16 2003-11-05 Method and apparatus for feeding and drilling a bore

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0206227.1 2002-03-16
GBGB0206227.1A GB0206227D0 (en) 2002-03-16 2002-03-16 Bore-lining and drilling

Publications (1)

Publication Number Publication Date
WO2003078790A1 true WO2003078790A1 (en) 2003-09-25

Family

ID=9933101

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/001103 WO2003078790A1 (en) 2002-03-16 2003-03-17 Lining and drilling a wellbore with an expandable bit

Country Status (6)

Country Link
US (1) US7004264B2 (en)
AU (1) AU2003216821A1 (en)
CA (1) CA2447672C (en)
GB (2) GB0206227D0 (en)
NO (1) NO334494B1 (en)
WO (1) WO2003078790A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2396634A (en) * 2002-12-27 2004-06-30 Weatherford Lamb Downhole cutting tool and method
GB2402953A (en) * 2003-06-16 2004-12-22 Weatherford Lamb A method of expanding a tubing
WO2005052304A1 (en) * 2003-11-14 2005-06-09 Bp Exploration Operating Company Limited Method for drilling and lining a wellbore
DE102008028997A1 (en) 2008-06-20 2010-01-21 Dr. Sven Becker und Dr. Michael Bahns GbR (vertretungsberechtigter Gesellschafter: Dr. Sven Becker, 30655 Hannover) Drilling method for producing borehole in e.g. earth in residential area, involves converting electric and/or hydraulic energy into mechanical energy in borehole for propulsion and driving of drilling tool
WO2010070256A1 (en) * 2008-12-19 2010-06-24 Schlumberger Technology B.V. Drilling apparatus
US7861779B2 (en) 2004-03-08 2011-01-04 Reelwell, AS Method and device for establishing an underground well
US11499374B2 (en) 2017-12-13 2022-11-15 Nov Downhole Eurasia Limited Downhole devices and associated apparatus and methods

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7013997B2 (en) * 1994-10-14 2006-03-21 Weatherford/Lamb, Inc. Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US7228901B2 (en) * 1994-10-14 2007-06-12 Weatherford/Lamb, Inc. Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells
US6536520B1 (en) 2000-04-17 2003-03-25 Weatherford/Lamb, Inc. Top drive casing system
US7311148B2 (en) * 1999-02-25 2007-12-25 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
US7275602B2 (en) * 1999-12-22 2007-10-02 Weatherford/Lamb, Inc. Methods for expanding tubular strings and isolating subterranean zones
US20060124306A1 (en) * 2000-01-19 2006-06-15 Vail William B Iii Installation of one-way valve after removal of retrievable drill bit to complete oil and gas wells
GB0109993D0 (en) * 2001-04-24 2001-06-13 E Tech Ltd Method
US7156179B2 (en) 2001-09-07 2007-01-02 Weatherford/Lamb, Inc. Expandable tubulars
NO316183B1 (en) * 2002-03-08 2003-12-22 Sigbjoern Sangesland Method and apparatus for feeding tubes
GB0215659D0 (en) * 2002-07-06 2002-08-14 Weatherford Lamb Formed tubulars
US7730965B2 (en) 2002-12-13 2010-06-08 Weatherford/Lamb, Inc. Retractable joint and cementing shoe for use in completing a wellbore
USRE42877E1 (en) 2003-02-07 2011-11-01 Weatherford/Lamb, Inc. Methods and apparatus for wellbore construction and completion
WO2004079151A2 (en) * 2003-03-05 2004-09-16 Weatherford/Lamb, Inc. Drilling with casing latch
ATE377695T1 (en) * 2003-04-25 2007-11-15 Shell Int Research METHOD FOR MAKING A BOREHOLE IN AN EARTH FORMATION
US7650944B1 (en) 2003-07-11 2010-01-26 Weatherford/Lamb, Inc. Vessel for well intervention
US7264067B2 (en) * 2003-10-03 2007-09-04 Weatherford/Lamb, Inc. Method of drilling and completing multiple wellbores inside a single caisson
CA2576483C (en) * 2004-07-23 2010-02-02 Baker Hughes Incorporated Open hole expandable patch with anchor
CA2538196C (en) * 2005-02-28 2011-10-11 Weatherford/Lamb, Inc. Deep water drilling with casing
US7428933B2 (en) * 2005-07-19 2008-09-30 Baker Hughes Incorporated Latchable hanger assembly and method for liner drilling and completion
AU2006299755B2 (en) * 2005-10-05 2011-12-22 Schlumberger Technology B.V. Method for drilling with a wellbore liner
US7857052B2 (en) * 2006-05-12 2010-12-28 Weatherford/Lamb, Inc. Stage cementing methods used in casing while drilling
US8276689B2 (en) * 2006-05-22 2012-10-02 Weatherford/Lamb, Inc. Methods and apparatus for drilling with casing
NO20075226L (en) * 2006-10-13 2008-04-14 Weatherford Lamb Method and assembly for a mono-diameter source structure
US8069916B2 (en) * 2007-01-03 2011-12-06 Weatherford/Lamb, Inc. System and methods for tubular expansion
US8146682B2 (en) * 2007-04-04 2012-04-03 Weatherford/Lamb, Inc. Apparatus and methods of milling a restricted casing shoe
EP2119867B1 (en) * 2008-04-23 2014-08-06 Weatherford/Lamb Inc. Monobore construction with dual expanders
WO2012107075A1 (en) * 2011-02-07 2012-08-16 Statoil Petroleum As Method and apparatus for drilling and lining a wellbore

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981525A (en) * 1933-12-05 1934-11-20 Bailey E Price Method of and apparatus for drilling oil wells
US3102599A (en) * 1961-09-18 1963-09-03 Continental Oil Co Subterranean drilling process
US3934660A (en) * 1974-07-02 1976-01-27 Nelson Daniel E Flexpower deep well drill
US4083405A (en) * 1976-05-06 1978-04-11 A-Z International Tool Company Well drilling method and apparatus therefor
US4620600A (en) * 1983-09-23 1986-11-04 Persson Jan E Drill arrangement
US5803666A (en) * 1996-12-19 1998-09-08 Keller; Carl E. Horizontal drilling method and apparatus
WO2000037766A2 (en) * 1998-12-22 2000-06-29 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
GB2348223A (en) * 1999-03-11 2000-09-27 Shell Int Research Forming a casing while simultaneously drilling a wellbore

Family Cites Families (181)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124023A (en) 1964-03-10 Dies for pipe and tubing tongs
US3006415A (en) 1961-10-31 Cementing apparatus
US3123160A (en) 1964-03-03 Retrievable subsurface well bore apparatus
US1185582A (en) 1914-07-13 1916-05-30 Edward Bignell Pile.
US1301285A (en) 1916-09-01 1919-04-22 Frank W A Finley Expansible well-casing.
US1342424A (en) 1918-09-06 1920-06-08 Shepard M Cotten Method and apparatus for constructing concrete piles
US1860218A (en) 1928-08-08 1932-05-24 Harold Wade Color photography
US1842638A (en) 1930-09-29 1932-01-26 Wilson B Wigle Elevating apparatus
US1917135A (en) 1932-02-17 1933-07-04 Littell James Well apparatus
US2049450A (en) 1933-08-23 1936-08-04 Macclatchie Mfg Company Expansible cutter tool
US2017451A (en) 1933-11-21 1935-10-15 Baash Ross Tool Co Packing casing bowl
US2060352A (en) 1936-06-20 1936-11-10 Reed Roller Bit Co Expansible bit
US2167338A (en) 1937-07-26 1939-07-25 U C Murcell Inc Welding and setting well casing
US2216895A (en) 1939-04-06 1940-10-08 Reed Roller Bit Co Rotary underreamer
US2228503A (en) 1939-04-25 1941-01-14 Boyd Liner hanger
US2214429A (en) 1939-10-24 1940-09-10 William J Miller Mud box
US2324679A (en) 1940-04-26 1943-07-20 Cox Nellie Louise Rock boring and like tool
US2295803A (en) 1940-07-29 1942-09-15 Charles M O'leary Cement shoe
US2370832A (en) 1941-08-19 1945-03-06 Baker Oil Tools Inc Removable well packer
US2379800A (en) 1941-09-11 1945-07-03 Texas Co Signal transmission system
US2414719A (en) 1942-04-25 1947-01-21 Stanolind Oil & Gas Co Transmission system
US2522444A (en) 1946-07-20 1950-09-12 Donovan B Grable Well fluid control
US2641444A (en) 1946-09-03 1953-06-09 Signal Oil & Gas Co Method and apparatus for drilling boreholes
US2499630A (en) 1946-12-05 1950-03-07 Paul B Clark Casing expander
US2668689A (en) 1947-11-07 1954-02-09 C & C Tool Corp Automatic power tongs
US2621742A (en) 1948-08-26 1952-12-16 Cicero C Brown Apparatus for cementing well liners
US2720267A (en) 1949-12-12 1955-10-11 Cicero C Brown Sealing assemblies for well packers
US2610690A (en) 1950-08-10 1952-09-16 Guy M Beatty Mud box
US2627891A (en) 1950-11-28 1953-02-10 Paul B Clark Well pipe expander
US2743495A (en) 1951-05-07 1956-05-01 Nat Supply Co Method of making a composite cutter
US2805043A (en) 1952-02-09 1957-09-03 Jr Edward B Williams Jetting device for rotary drilling apparatus
US2765146A (en) 1952-02-09 1956-10-02 Jr Edward B Williams Jetting device for rotary drilling apparatus
US2650314A (en) 1952-02-12 1953-08-25 George W Hennigh Special purpose electric motor
US2764329A (en) 1952-03-10 1956-09-25 Lucian W Hampton Load carrying attachment for bicycles, motorcycles, and the like
US2663073A (en) 1952-03-19 1953-12-22 Acrometal Products Inc Method of forming spools
US2743087A (en) 1952-10-13 1956-04-24 Layne Under-reaming tool
US2738011A (en) 1953-02-17 1956-03-13 Thomas S Mabry Means for cementing well liners
US2741907A (en) 1953-04-27 1956-04-17 Genender Louis Locksmithing tool
US2692059A (en) 1953-07-15 1954-10-19 Standard Oil Dev Co Device for positioning pipe in a drilling derrick
US2978047A (en) * 1957-12-03 1961-04-04 Vaan Walter H De Collapsible drill bit assembly and method of drilling
US3054100A (en) 1958-06-04 1962-09-11 Gen Precision Inc Signalling system
US3159219A (en) 1958-05-13 1964-12-01 Byron Jackson Inc Cementing plugs and float equipment
US3087546A (en) 1958-08-11 1963-04-30 Brown J Woolley Methods and apparatus for removing defective casing or pipe from well bores
US3041901A (en) 1959-05-20 1962-07-03 Dowty Rotol Ltd Make-up and break-out mechanism for drill pipe joints
US3090031A (en) 1959-09-29 1963-05-14 Texaco Inc Signal transmission system
US3117636A (en) 1960-06-08 1964-01-14 John L Wilcox Casing bit with a removable center
US3111179A (en) 1960-07-26 1963-11-19 A And B Metal Mfg Company Inc Jet nozzle
US3191680A (en) 1962-03-14 1965-06-29 Pan American Petroleum Corp Method of setting metallic liners in wells
US3131769A (en) 1962-04-09 1964-05-05 Baker Oil Tools Inc Hydraulic anchors for tubular strings
US3122811A (en) 1962-06-29 1964-03-03 Lafayette E Gilreath Hydraulic slip setting apparatus
US3169592A (en) 1962-10-22 1965-02-16 Lamphere Jean K Retrievable drill bit
US3193116A (en) 1962-11-23 1965-07-06 Exxon Production Research Co System for removing from or placing pipe in a well bore
US3191677A (en) 1963-04-29 1965-06-29 Myron M Kinley Method and apparatus for setting liners in tubing
NL6411125A (en) 1963-09-25 1965-03-26
US3353599A (en) 1964-08-04 1967-11-21 Gulf Oil Corp Method and apparatus for stabilizing formations
US3380528A (en) 1965-09-24 1968-04-30 Tri State Oil Tools Inc Method and apparatus of removing well pipe from a well bore
US3419079A (en) 1965-10-23 1968-12-31 Schlumberger Technology Corp Well tool with expansible anchor
CH450461A (en) 1966-01-31 1968-01-31 Wirth Gallo & Co Keyboard with key tops made of transparent material
US3392609A (en) 1966-06-24 1968-07-16 Abegg & Reinhold Co Well pipe spinning unit
US3635105A (en) 1967-10-17 1972-01-18 Byron Jackson Inc Power tong head and assembly
US3518903A (en) 1967-12-26 1970-07-07 Byron Jackson Inc Combined power tong and backup tong assembly
US3489220A (en) 1968-08-02 1970-01-13 J C Kinley Method and apparatus for repairing pipe in wells
US3548936A (en) 1968-11-15 1970-12-22 Dresser Ind Well tools and gripping members therefor
US3552507A (en) 1968-11-25 1971-01-05 Cicero C Brown System for rotary drilling of wells using casing as the drill string
US3747675A (en) 1968-11-25 1973-07-24 C Brown Rotary drive connection for casing drilling string
FR1604950A (en) 1968-12-31 1971-05-15
US3575245A (en) 1969-02-05 1971-04-20 Servco Co Apparatus for expanding holes
US3552508A (en) 1969-03-03 1971-01-05 Cicero C Brown Apparatus for rotary drilling of wells using casing as the drill pipe
US3606664A (en) 1969-04-04 1971-09-21 Exxon Production Research Co Leak-proof threaded connections
US3570598A (en) 1969-05-05 1971-03-16 Glenn D Johnson Constant strain jar
US3550684A (en) 1969-06-03 1970-12-29 Schlumberger Technology Corp Methods and apparatus for facilitating the descent of well tools through deviated well bores
US3566505A (en) 1969-06-09 1971-03-02 Hydrotech Services Apparatus for aligning two sections of pipe
US3559739A (en) 1969-06-20 1971-02-02 Chevron Res Method and apparatus for providing continuous foam circulation in wells
US3552509A (en) 1969-09-11 1971-01-05 Cicero C Brown Apparatus for rotary drilling of wells using casing as drill pipe
US3603413A (en) 1969-10-03 1971-09-07 Christensen Diamond Prod Co Retractable drill bits
US3552510A (en) 1969-10-08 1971-01-05 Cicero C Brown Apparatus for rotary drilling of wells using casing as the drill pipe
US3624760A (en) 1969-11-03 1971-11-30 Albert G Bodine Sonic apparatus for installing a pile jacket, casing member or the like in an earthen formation
US3602302A (en) 1969-11-10 1971-08-31 Westinghouse Electric Corp Oil production system
BE757087A (en) 1969-12-03 1971-04-06 Gardner Denver Co REMOTELY CONTROLLED DRILL ROD UNSCREWING MECHANISM
US3691624A (en) 1970-01-16 1972-09-19 John C Kinley Method of expanding a liner
US3603411A (en) * 1970-01-19 1971-09-07 Christensen Diamond Prod Co Retractable drill bits
US3603412A (en) 1970-02-02 1971-09-07 Baker Oil Tools Inc Method and apparatus for drilling in casing from the top of a borehole
US3696332A (en) 1970-05-25 1972-10-03 Shell Oil Co Telemetering drill string with self-cleaning connectors
US3808916A (en) 1970-09-24 1974-05-07 Robbins & Ass J Earth drilling machine
US3656564A (en) 1970-12-03 1972-04-18 Cicero C Brown Apparatus for rotary drilling of wells using casing as the drill pipe
US3669190A (en) 1970-12-21 1972-06-13 Otis Eng Corp Methods of completing a well
US3692126A (en) 1971-01-29 1972-09-19 Frank C Rushing Retractable drill bit apparatus
US3785193A (en) 1971-04-10 1974-01-15 Kinley J Liner expanding apparatus
US3838613A (en) 1971-04-16 1974-10-01 Byron Jackson Inc Motion compensation system for power tong apparatus
US3776991A (en) 1971-06-30 1973-12-04 P Marcus Injection blow molding method
US3760894A (en) 1971-11-10 1973-09-25 M Pitifer Replaceable blade drilling bits
US3729057A (en) 1971-11-30 1973-04-24 Werner Ind Inc Travelling drill bit
US3691825A (en) 1971-12-03 1972-09-19 Norman D Dyer Rotary torque indicator for well drilling apparatus
US3776320A (en) 1971-12-23 1973-12-04 C Brown Rotating drive assembly
US3881375A (en) 1972-12-12 1975-05-06 Borg Warner Pipe tong positioning system
US3840128A (en) 1973-07-09 1974-10-08 N Swoboda Racking arm for pipe sections, drill collars, riser pipe, and the like used in well drilling operations
US3870114A (en) 1973-07-23 1975-03-11 Stabilator Ab Drilling apparatus especially for ground drilling
US3848684A (en) 1973-08-02 1974-11-19 Tri State Oil Tools Inc Apparatus for rotary drilling
US3857450A (en) 1973-08-02 1974-12-31 W Guier Drilling apparatus
US4077525A (en) * 1974-11-14 1978-03-07 Lamb Industries, Inc. Derrick mounted apparatus for the manipulation of pipe
US3945444A (en) * 1975-04-01 1976-03-23 The Anaconda Company Split bit casing drill
US4189185A (en) * 1976-09-27 1980-02-19 Tri-State Oil Tool Industries, Inc. Method for producing chambered blast holes
US4257442A (en) * 1976-09-27 1981-03-24 Claycomb Jack R Choke for controlling the flow of drilling mud
US4186628A (en) * 1976-11-30 1980-02-05 General Electric Company Rotary drill bit and method for making same
US4142739A (en) * 1977-04-18 1979-03-06 Compagnie Maritime d'Expertise, S.A. Pipe connector apparatus having gripping and sealing means
US4133396A (en) * 1977-11-04 1979-01-09 Smith International, Inc. Drilling and casing landing apparatus and method
US4194383A (en) * 1978-06-22 1980-03-25 Gulf & Western Manufacturing Company Modular transducer assembly for rolling mill roll adjustment mechanism
US4320915A (en) * 1980-03-24 1982-03-23 Varco International, Inc. Internal elevator
US4311195A (en) * 1980-07-14 1982-01-19 Baker International Corporation Hydraulically set well packer
US4315553A (en) * 1980-08-25 1982-02-16 Stallings Jimmie L Continuous circulation apparatus for air drilling well bore operations
US4483399A (en) * 1981-02-12 1984-11-20 Colgate Stirling A Method of deep drilling
US4437363A (en) * 1981-06-29 1984-03-20 Joy Manufacturing Company Dual camming action jaw assembly and power tong
US4427063A (en) * 1981-11-09 1984-01-24 Halliburton Company Retrievable bridge plug
FR2523635A1 (en) * 1982-03-17 1983-09-23 Bretagne Atel Chantiers DEVICE FOR MOUNTING A DRILL ROD TRAIN AND FOR TRAINING IN ROTATION AND TRANSLATION
US4494424A (en) * 1983-06-24 1985-01-22 Bates Darrell R Chain-powered pipe tong device
US4652195A (en) * 1984-01-26 1987-03-24 Mcarthur James R Casing stabbing and positioning apparatus
US4651837A (en) * 1984-05-31 1987-03-24 Mayfield Walter G Downhole retrievable drill bit
US4649777A (en) * 1984-06-21 1987-03-17 David Buck Back-up power tongs
US4733689A (en) * 1986-09-08 1988-03-29 Lee Osnas Fluid pressure activated valve
FR2605657A1 (en) * 1986-10-22 1988-04-29 Soletanche METHOD FOR PRODUCING A PIEU IN SOIL, DRILLING MACHINE AND DEVICE FOR IMPLEMENTING SAID METHOD
US4725179A (en) * 1986-11-03 1988-02-16 Lee C. Moore Corporation Automated pipe racking apparatus
US5717334A (en) * 1986-11-04 1998-02-10 Paramagnetic Logging, Inc. Methods and apparatus to produce stick-slip motion of logging tool attached to a wireline drawn upward by a continuously rotating wireline drum
US4813493A (en) * 1987-04-14 1989-03-21 Triten Corporation Hydraulic top drive for wells
US4813495A (en) * 1987-05-05 1989-03-21 Conoco Inc. Method and apparatus for deepwater drilling
US4806928A (en) * 1987-07-16 1989-02-21 Schlumberger Technology Corporation Apparatus for electromagnetically coupling power and data signals between well bore apparatus and the surface
US4901069A (en) * 1987-07-16 1990-02-13 Schlumberger Technology Corporation Apparatus for electromagnetically coupling power and data signals between a first unit and a second unit and in particular between well bore apparatus and the surface
US4800968A (en) * 1987-09-22 1989-01-31 Triten Corporation Well apparatus with tubular elevator tilt and indexing apparatus and methods of their use
MY106026A (en) * 1989-08-31 1995-02-28 Union Oil Company Of California Well casing flotation device and method
US5096465A (en) * 1989-12-13 1992-03-17 Norton Company Diamond metal composite cutter and method for making same
US4997042A (en) * 1990-01-03 1991-03-05 Jordan Ronald A Casing circulator and method
US5082069A (en) * 1990-03-01 1992-01-21 Atlantic Richfield Company Combination drivepipe/casing and installation method for offshore well
US5176518A (en) * 1990-03-14 1993-01-05 Fokker Aircraft B.V. Movement simulator
US5097870A (en) * 1990-03-15 1992-03-24 Conoco Inc. Composite tubular member with multiple cells
US5152554A (en) * 1990-12-18 1992-10-06 Lafleur Petroleum Services, Inc. Coupling apparatus
US5271472A (en) * 1991-08-14 1993-12-21 Atlantic Richfield Company Drilling with casing and retrievable drill bit
US5186265A (en) * 1991-08-22 1993-02-16 Atlantic Richfield Company Retrievable bit and eccentric reamer assembly
MY108743A (en) * 1992-06-09 1996-11-30 Shell Int Research Method of greating a wellbore in an underground formation
US5285204A (en) * 1992-07-23 1994-02-08 Conoco Inc. Coil tubing string and downhole generator
US5388651A (en) * 1993-04-20 1995-02-14 Bowen Tools, Inc. Top drive unit torque break-out system
US5379835A (en) * 1993-04-26 1995-01-10 Halliburton Company Casing cementing equipment
US5386746A (en) * 1993-05-26 1995-02-07 Hawk Industries, Inc. Apparatus for making and breaking joints in drill pipe strings
US5472057A (en) * 1994-04-11 1995-12-05 Atlantic Richfield Company Drilling with casing and retrievable bit-motor assembly
US5494122A (en) * 1994-10-04 1996-02-27 Smith International, Inc. Composite nozzles for rock bits
US6857486B2 (en) * 2001-08-19 2005-02-22 Smart Drilling And Completion, Inc. High power umbilicals for subterranean electric drilling machines and remotely operated vehicles
GB9503830D0 (en) * 1995-02-25 1995-04-19 Camco Drilling Group Ltd "Improvements in or relating to steerable rotary drilling systems"
US5791417A (en) * 1995-09-22 1998-08-11 Weatherford/Lamb, Inc. Tubular window formation
GB9524109D0 (en) * 1995-11-24 1996-01-24 Petroline Wireline Services Downhole apparatus
US5706894A (en) * 1996-06-20 1998-01-13 Frank's International, Inc. Automatic self energizing stop collar
US5947213A (en) * 1996-12-02 1999-09-07 Intelligent Inspection Corporation Downhole tools using artificial intelligence based control
US6688394B1 (en) * 1996-10-15 2004-02-10 Coupler Developments Limited Drilling methods and apparatus
FR2757426B1 (en) * 1996-12-19 1999-01-29 Inst Francais Du Petrole WATER-BASED FOAMING COMPOSITION - MANUFACTURING METHOD
US5860474A (en) * 1997-06-26 1999-01-19 Atlantic Richfield Company Through-tubing rotary drilling
US5957225A (en) * 1997-07-31 1999-09-28 Bp Amoco Corporation Drilling assembly and method of drilling for unstable and depleted formations
MY122241A (en) * 1997-08-01 2006-04-29 Shell Int Research Creating zonal isolation between the interior and exterior of a well system
US7509722B2 (en) * 1997-09-02 2009-03-31 Weatherford/Lamb, Inc. Positioning and spinning device
KR100251277B1 (en) * 1998-01-20 2000-04-15 윤종용 Liquid crystal display
US6135208A (en) * 1998-05-28 2000-10-24 Halliburton Energy Services, Inc. Expandable wellbore junction
CA2240559C (en) * 1998-06-12 2003-12-23 Sandvik Ab Embankment hammer
US6012529A (en) * 1998-06-22 2000-01-11 Mikolajczyk; Raymond F. Downhole guide member for multiple casing strings
US6170573B1 (en) * 1998-07-15 2001-01-09 Charles G. Brunet Freely moving oil field assembly for data gathering and or producing an oil well
US6186233B1 (en) * 1998-11-30 2001-02-13 Weatherford Lamb, Inc. Down hole assembly and method for forming a down hole window and at least one keyway in communication with the down hole window for use in multilateral wells
US6173777B1 (en) * 1999-02-09 2001-01-16 Albert Augustus Mullins Single valve for a casing filling and circulating apparatus
US6854533B2 (en) * 2002-12-20 2005-02-15 Weatherford/Lamb, Inc. Apparatus and method for drilling with casing
US6857487B2 (en) * 2002-12-30 2005-02-22 Weatherford/Lamb, Inc. Drilling with concentric strings of casing
US6691801B2 (en) * 1999-03-05 2004-02-17 Varco I/P, Inc. Load compensator for a pipe running tool
AU3818500A (en) * 1999-04-09 2000-11-14 Shell Internationale Research Maatschappij B.V. Method of creating a wellbore in an underground formation
US6189621B1 (en) * 1999-08-16 2001-02-20 Smart Drilling And Completion, Inc. Smart shuttles to complete oil and gas wells
US6343649B1 (en) * 1999-09-07 2002-02-05 Halliburton Energy Services, Inc. Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation
CA2327920C (en) * 1999-12-10 2005-09-13 Baker Hughes Incorporated Apparatus and method for simultaneous drilling and casing wellbores
GB9930450D0 (en) * 1999-12-23 2000-02-16 Eboroil Sa Subsea well intervention vessel
GB0008988D0 (en) * 2000-04-13 2000-05-31 Bbl Downhole Tools Ltd Drill bit nozzle
US7325610B2 (en) * 2000-04-17 2008-02-05 Weatherford/Lamb, Inc. Methods and apparatus for handling and drilling with tubulars or casing
US6349764B1 (en) * 2000-06-02 2002-02-26 Oil & Gas Rental Services, Inc. Drilling rig, pipe and support apparatus
WO2002016423A2 (en) * 2000-08-25 2002-02-28 Basf Plant Science Gmbh PLANT POLYNUCLEOTIDES ENCODING NOVEL Na+/H+ ANTIPORTERS
US20040011534A1 (en) * 2002-07-16 2004-01-22 Simonds Floyd Randolph Apparatus and method for completing an interval of a wellbore while drilling
GB2377951B (en) * 2001-07-25 2004-02-04 Schlumberger Holdings Method and system for drilling a wellbore having cable based telemetry
US7234546B2 (en) * 2002-04-08 2007-06-26 Baker Hughes Incorporated Drilling and cementing casing system
US6832656B2 (en) * 2002-06-26 2004-12-21 Weartherford/Lamb, Inc. Valve for an internal fill up tool and associated method
US6892835B2 (en) * 2002-07-29 2005-05-17 Weatherford/Lamb, Inc. Flush mounted spider
GB0230189D0 (en) * 2002-12-27 2003-02-05 Weatherford Lamb Downhole cutting tool and method
US6953096B2 (en) * 2002-12-31 2005-10-11 Weatherford/Lamb, Inc. Expandable bit with secondary release device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1981525A (en) * 1933-12-05 1934-11-20 Bailey E Price Method of and apparatus for drilling oil wells
US3102599A (en) * 1961-09-18 1963-09-03 Continental Oil Co Subterranean drilling process
US3934660A (en) * 1974-07-02 1976-01-27 Nelson Daniel E Flexpower deep well drill
US4083405A (en) * 1976-05-06 1978-04-11 A-Z International Tool Company Well drilling method and apparatus therefor
US4620600A (en) * 1983-09-23 1986-11-04 Persson Jan E Drill arrangement
US5803666A (en) * 1996-12-19 1998-09-08 Keller; Carl E. Horizontal drilling method and apparatus
WO2000037766A2 (en) * 1998-12-22 2000-06-29 Weatherford/Lamb, Inc. Procedures and equipment for profiling and jointing of pipes
GB2348223A (en) * 1999-03-11 2000-09-27 Shell Int Research Forming a casing while simultaneously drilling a wellbore

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2396634B (en) * 2002-12-27 2006-07-26 Weatherford Lamb Downhole cutting tool and method
GB2396634A (en) * 2002-12-27 2004-06-30 Weatherford Lamb Downhole cutting tool and method
US7140444B2 (en) 2002-12-27 2006-11-28 Weatherford/Lamb, Inc Downhole cutting tool and method
GB2402953B (en) * 2003-06-16 2007-08-29 Weatherford Lamb Tubing expansion
US7255177B2 (en) 2003-06-16 2007-08-14 Weatherford/Lamb, Inc. Tubing expansion
GB2402953A (en) * 2003-06-16 2004-12-22 Weatherford Lamb A method of expanding a tubing
WO2005052304A1 (en) * 2003-11-14 2005-06-09 Bp Exploration Operating Company Limited Method for drilling and lining a wellbore
US7861779B2 (en) 2004-03-08 2011-01-04 Reelwell, AS Method and device for establishing an underground well
DE102008028997A1 (en) 2008-06-20 2010-01-21 Dr. Sven Becker und Dr. Michael Bahns GbR (vertretungsberechtigter Gesellschafter: Dr. Sven Becker, 30655 Hannover) Drilling method for producing borehole in e.g. earth in residential area, involves converting electric and/or hydraulic energy into mechanical energy in borehole for propulsion and driving of drilling tool
DE102008028997B4 (en) * 2008-06-20 2012-03-01 Dr. Sven Becker und Dr. Michael Bahns GbR (vertretungsberechtigter Gesellschafter: Dr. Sven Becker, 30655 Hannover) Drilling method and drill for making a well in soil and rock
WO2010070256A1 (en) * 2008-12-19 2010-06-24 Schlumberger Technology B.V. Drilling apparatus
GB2478096A (en) * 2008-12-19 2011-08-24 Schlumberger Holdings Drilling apparatus
GB2478096B (en) * 2008-12-19 2013-03-20 Schlumberger Holdings Drilling apparatus
US9303459B2 (en) 2008-12-19 2016-04-05 Schlumberger Technology Corporation Drilling apparatus
US11499374B2 (en) 2017-12-13 2022-11-15 Nov Downhole Eurasia Limited Downhole devices and associated apparatus and methods

Also Published As

Publication number Publication date
NO20034926D0 (en) 2003-11-05
US7004264B2 (en) 2006-02-28
GB2393989B (en) 2005-12-07
CA2447672A1 (en) 2003-09-25
NO334494B1 (en) 2014-03-17
GB0325299D0 (en) 2003-12-03
US20030217865A1 (en) 2003-11-27
GB0206227D0 (en) 2002-05-01
GB2393989A (en) 2004-04-14
AU2003216821A1 (en) 2003-09-29
CA2447672C (en) 2007-11-27

Similar Documents

Publication Publication Date Title
US7004264B2 (en) Bore lining and drilling
US7090025B2 (en) Methods and apparatus for reforming and expanding tubulars in a wellbore
US7117957B2 (en) Methods for drilling and lining a wellbore
US6742591B2 (en) Downhole apparatus
US7798223B2 (en) Bore isolation
CA2551067C (en) Axial compression enhanced tubular expansion
US7410001B2 (en) Coupling and sealing tubulars in a bore
US7699112B2 (en) Sidetrack option for monobore casing string
GB2448449A (en) Method for Completing a Wellbore
NO336239B1 (en) Procedure for drilling

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SC SD SE SG SK SL TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

ENP Entry into the national phase

Ref document number: 0325299

Country of ref document: GB

Kind code of ref document: A

Free format text: PCT FILING DATE = 20030317

WWE Wipo information: entry into national phase

Ref document number: 2447672

Country of ref document: CA

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP