US20040256098A1 - Apparatus for and a method of anchoring an expandable conduit - Google Patents
Apparatus for and a method of anchoring an expandable conduit Download PDFInfo
- Publication number
- US20040256098A1 US20040256098A1 US10/894,302 US89430204A US2004256098A1 US 20040256098 A1 US20040256098 A1 US 20040256098A1 US 89430204 A US89430204 A US 89430204A US 2004256098 A1 US2004256098 A1 US 2004256098A1
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- US
- United States
- Prior art keywords
- tubular
- resilient
- resilient member
- conduit
- wellbore
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
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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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/106—Couplings or joints therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
- E21B43/108—Expandable screens or perforated liners
Abstract
The present invention provides apparatus and a method of anchoring an expandable conduit. A formation is provided on an outer surface of the conduit, the formation comprising a number of bands of a friction and/or sealing material. When the expandable conduit is radially expanded, the friction and/or sealing material engages a second conduit in which the expandable conduit is located. The engagement of the friction and/or sealing material provides an anchor for the expandable conduit.
Description
- This application is a continuation of co-pending U.S. patent application Ser. No. 10/069,990, filed Jul. 8, 2002, which claims priority to Great Britain patent application number 9920936.3, filed Sep. 6, 1999. Each of the aforementioned related patent applications is herein incorporated by reference.
- The present invention relates to apparatus for and a method of anchoring an expandable conduit, particularly, but not exclusively, to a second conduit in which the expandable conduit is located.
- A borehole is conventionally drilled during the recovery of hydrocarbons from a well, the borehole typically being lined with a casing that is cemented into place. Casings are installed to prevent the formation around the borehole from collapsing. In addition, casings prevent unwanted fluids from the surrounding formation from flowing into the borehole, and similarly, prevent fluids from within the borehole escaping into the surrounding formation.
- It is known to use a pliable casing that can be radially expanded so that an outer surface of the casing contacts the formation around the borehole. The pliable casing undergoes plastic deformation when expanded, typically by passing an expander device, such as a ceramic or steel cone or the like, through the casing. The expander device is propelled along the casing in a similar manner to a pipeline pig and may be pushed (using fluid pressure for example) or pulled (using drill pipe, rods, coiled tubing, a wireline or the like).
- Lengths of expandable casing are coupled together (typically by threaded couplings) to produce a casing string. The casing string is inserted into the borehole in an unexpanded state and is subsequently expanded using the expander device. However, the unexpanded casing string requires to be anchored either at an upper end or a lower end thereof before and/or during the expansion process.
- According to a first aspect of the present invention, there is provided apparatus for anchoring an expandable conduit, the apparatus comprising at least one formation provided on an outer surface of the expandable conduit, the formation being capable of engaging a second conduit in which the expandable conduit is located, the formation providing an anchor and/or seal for the expandable conduit when the expandable conduit is at least partially expanded.
- According to a second aspect of the present invention, there is provided a method of anchoring an expandable conduit, the method comprising the steps of providing an expandable conduit having at least one formation on an outer surface thereof, the formation being capable of engaging a second conduit in which the expandable conduit is located to provide an anchor and/or seal for the expandable conduit, anchoring the expandable conduit to the second conduit, and expanding at least a portion of the expandable conduit to force the formation into contact with the second conduit.
- The invention also provides expandable conduit such as casing or the like, the conduit having a formation on its outer surface adapted to engage a second member when the expandable conduit is expanded.
- The formation typically comprises resilient material, typically first and second bands of a first resilient material such as rubber, the first and second bands being axially spaced apart, with a third band of a second resilient material such as a second rubber being located between the first and second bands. The first material is preferably harder than the second material. The first and/or second materials may be profiled on an outer surface thereof to enhance anchoring and/or sealing.
- In one specific embodiment of the invention, the first and second bands comprise 2 inch (approximately 51 millimetres) wide bands, spaced apart by 10 inches (approximately 250 millimetres). The third band typically comprises a 10 inch (approximately 250 millimetres) wide band. The first rubber is typically a 60 durometer rubber. The second rubber is typically a 40 durometer rubber. The bands of rubber can be of any suitable hardness and width. Alternatively, the first rubber can be a 90 durometer rubber, and the second rubber can be a 60 durometer rubber.
- In an alternative embodiment, the formation comprises a band of rubber or other suitable resilient material. The band preferably defines a zigzag pattern on the outer surface of the conduit. The rubber can be of any suitable hardness, but is typically in the order of 40 to 90 durometers, although values of hardness beyond this range may also be used.
- The material properties and configuration of each formation can be chosen to suit the particular application.
- The expandable conduit typically comprises an expandable casing or liner. However, the expandable conduit may be any suitable expandable pipe or the like.
- The formation is optionally detachable and preferably applied to the outer surface of the conduit before the conduit is expanded. The formation optionally comprises two or more axially spaced formations.
- The second conduit typically comprises a borehole, casing, liner or the like. The expandable casing may engage any type of conduit. The method of the invention typically includes the additional step of providing an expander device to radially expand the expandable conduit.
- The expander device typically comprises a cone. The expander device may be manufactured from steel. Alternatively, the expander device may be manufactured from a ceramics material, or a combination of steel and a ceramics material. The expander device is optionally flexible.
- The expandable conduit is typically temporarily anchored to the second conduit using a mechanical or other anchoring device (e.g. a slip).
- Embodiments of the present invention shall now be described, by way of example only, with reference to the accompanying drawing in which:
- FIG. 1 is a schematic cross-section of an exemplary embodiment of apparatus for anchoring an expandable conduit to a borehole;
- FIG. 2a is a front elevation showing a first configuration of a formation applied to an outer surface of the apparatus of FIG. 1;
- FIG. 2b is an end elevation of the formation of FIG. 2a;
- FIG. 2c is an enlarged view of a portion of the formation of FIGS. 2a and 2 b showing a profiled outer surface;
- FIG. 3 is a schematic cross-section of an alternative embodiment of apparatus for anchoring an expandable conduit to a borehole having a different formation on an outer surface;
- FIG. 4a is an front elevation of the formation of FIG. 3; and
- FIG. 4b is an end elevation of the formation of FIG. 4a.
- Referring to the drawing, FIG. 1 shows an exemplary embodiment of apparatus for anchoring an
expandable conduit 12. Theexpandable conduit 12 is shown located within a casing orliner 14. Conventionally, casing orliner 14 is used to line or case a borehole that is drilled into aformation 16 to facilitate the recovery of hydrocarbons. It should be noted however, that theexpandable conduit 12 may be a liner or casing used to case or line the borehole. - The
expandable conduit 12 may be any type of suitable conduit that is capable of sustaining plastic deformation whereby it can be radially expanded by at least 10%, although it may be radially expanded by a value more or less than this. - The upper portion of FIG. 1 shows the
expandable conduit 12 in unexpanded form, with anexpander device 18 located therein used to impart a radial expansion force. The lower portion of FIG. 1 shows a portion of theexpandable conduit 12 radially expanded by theexpander device 18. - The
expander device 18 typically comprises a cone. Theexpander device 18 may be manufactured from steel, or alternatively may be manufactured from a ceramics material, or a combination of steel and a ceramics material. Theexpander device 18 is optionally flexible, although this is advantageous where theexpander device 18 is required to expand an expandable conduit that includes a curvature or the like. Any conventional type ofexpander device 18 may be used. - As shown in FIG. 1, the
expandable conduit 12 is provided with at least one formation, generally designated 20, (only oneformation 20 shown in FIG. 1) on anouter surface 12 s thereof. Theformation 20 typically comprises first andsecond bands longitudinal axis 26 of theexpandable conduit 12. The first andsecond bands second bands outer surface 12 s of theexpandable conduit 12, although this configuration is not essential. The first andsecond bands formation 20 need not extend around the full circumference of thesurface 12 s. - Located between the first and
second bands third band 28 of a second type of rubber. Thethird band 28 preferably extends between the first andsecond bands second bands third band 28 is typically of a second depth. The first depth is typically larger than the second depth, although they may be the same. Thus, the first andsecond bands surface 12 s than thethird band 28, as shown schematically in FIG. 1. - The first type of rubber (i.e. first and
second bands 22, 24) is preferably of a harder consistency than the second type of rubber (i.e., third band 28). The first type of rubber is typically 60 durometer rubber, whereas the second type of rubber is typically 40 durometer rubber. Durometer is a conventional hardness scale for rubber. - The particular properties of the rubber may be of any suitable type and the hardnessess quoted are exemplary only. It should also be noted that the relative dimensions and spacings of the first, second and
third bands - Referring to FIGS. 2a to 2 c, there is shown an
alternative formation 50 that is substantially the same asformation 20. In the embodiment shown in FIGS. 2a to 2 c, theformation 50 comprises first andsecond bands third band 56 of a second resilient material located therebetween. - The first and
second bands third band 56 is thus 3 inches wide. - The first resilient material of the first and
second bands third band 56. In the embodiment shown in FIGS. 2a to 2 c, the first resilient material comprises a rubber with a 90 durometer hardness, and the second resilient material comprises a rubber with a 60 durometer hardness. - Unlike
formation 20, the depths of thebands outer face 56 s of thethird band 56 can be profiled. Theouter face 56 s is ribbed to enhance the grip of thethird band 56 on an inner face of a second conduit (e.g. a preinstalled portion of liner, casing or the like, or a wellbore formation) in which theexpandable conduit 12 is located. It will be appreciated that an outer surface on the first andsecond bands - The two
outer bands third band 56. Thethird band 56 typically provides a lower temperature seal. - In use, the
formation outer surface 12 s of the (unexpanded)expandable conduit 12. Theformation expandable conduit 12, the spacings and number offormations - The
expandable conduit 12 is then run into a borehole, casing orliner 14, or some other conduit onto which theexpandable conduit 12 is to be attached. As can be seen in FIG. 1 (upper portion) when theexpandable conduit 12 is run into the casing orliner 14, anannulus 30 is created between theouter surface 12 s of theexpandable conduit 12 and aninner surface 14 i of the casing orliner 14. Theexpander device 18 is typically located in an expandedportion 12 e of theexpandable conduit 12 before theconduit 12 is run into the casing orliner 14. It should be noted that theconduit 12 is of the non-interference type wherein theannulus 30 remains (although reduced in size) even when theexpandable conduit 12 is radially expanded i.e., there is a gap between theexpandable conduit 12 and the casing orliner 14.Expandable conduit 12 need not be of the non-interference type. - As the
outer surface 12 s of theexpandable conduit 12 is not in direct contact with theinner surface 14 i of the casing orliner 14, a mechanical or other type of anchoring device 32 (e.g. a slip) is used to provide a temporary anchor whilst at least a portion of theexpandable conduit 12 is radially expanded. The mechanical or other type of anchoringdevice 32 may be of any conventional type and is typically attached at or near, the expandedportion 12 e of theexpandable conduit 12. When the mechanical or other type of anchoringdevice 32 is set, theexpander device 18 is pushed or pulled through theexpandable conduit 12 in the direction ofarrow 34. Theexpander device 18 may be propelled through theexpandable conduit 12 using fluid pressure, or may be pigged along theexpandable conduit 12 using a conventional pig or tractor (not shown). Theexpander device 18 may alternatively be propelled using a weight (from a string for example), or may by pulled through the expandable conduit 12 (e.g. using drill pipe, rods, coiled tubing, a wireline or the like). - As the
expander device 18 is propelled along the expandable conduit 12 (using any conventional means), it radially expands theconduit 12, as illustrated in the lower portion of FIG. 1. As theconduit 12 is expanded, theformation formation 20, 50 (i.e. first, second andthird bands inner surface 14 i of casing orliner 14. It is advantageous to have an outer surface of the first and second rubbers (i.e.bands band 28, 56), profiled (e.g. ribbed or the like) to enhance the anchoring and/or sealing. - As the first, second and
third bands inner surface 14 i of the casing orliner 14, they provide an anchor point due to the friction caused between the first and/or second rubbers and theinner surface 14 i. This anchor point anchors theexpandable conduit 12 to the casing orliner 14. - Additionally, the first and/or second rubbers may also act as a seal that results in an annular pressure seal that seals the
annulus 30. Where two ormore formations annulus 30 between theformations - After the
formation device 32 can be released, and optionally removed from the casing orliner 14. - Referring to FIG. 3, there is shown an alternative
expandable conduit 100, that is a second embodiment of apparatus of the present invention.Expandable conduit 100 is substantially the same asexpandable conduit 12, but has a furtheralternative formation 150 on anouter surface 100 s thereof. - The
expandable conduit 100 may be any type of suitable conduit that is capable of sustaining plastic deformation whereby it can be radially expanded by at least 10%, although it may be radially expanded by a value more or less than this. - As can be seen from FIG. 3, the
expandable conduit 100 is provided with apre-expanded portion 100 e in which an expander device (e.g. expander device 18) may be located whilst theconduit 100 is run into a borehole or the like. It should be noted that the expander device need not be located in theconduit 100 whilst it is being run into the borehole, and can be located in theconduit 100 once it is in place. - As shown in FIG. 3, the
expandable conduit 100 is provided with at least one formation, generally designated 150. A number offormations 150 are shown applied to theouter surface 100 s of theconduit 100, each formation being axially spaced from one another by around 12 inches (approximately 305 mm). - The
formation 150 is best shown in FIGS. 4a and 4 b. Thealternative formation 150 is in the form of a zigzag. In this embodiment, the or eachformation 150 comprises a single (preferably annular) band of rubber that is, for example, of 90 durometers hardness and is about 2.5 inches (approximately 28 mm) wide by around 0.12 inches (approximately 3 mm) deep. - To provide a zigzag pattern and hence increase the strength of the grip and/or seal that the
formation 150 provides in use, a number ofslots slots - The
slots 152 a are milled at around 20 circumferentially spaced-apart locations, with around 18° between each along oneedge 150 a of the band. The process is then repeated by milling another 20slots 152 b on theother side 150 b of the band, the slots on the other side being circumferentially offset by 9° from theslots 152 a on the other side. - In use, the
formation 150 is applied to theouter surface 100 s of the (unexpanded)expandable conduit 100. Theformation 150 may be applied at axially spaced-apart locations along the length of theexpandable conduit 100, as shown in FIG. 3, the spacings and number offormations 100 being chosen to suit the particular application. - The
expandable conduit 100 is then run into a borehole, casing orliner 14, or some other conduit onto which theexpandable conduit 100 is to be attached, and is used in substantially the same way asconduit 12 described above. - Using the method and apparatus described herein for anchoring an expandable conduit to a second conduit, it is possible to case a wellbore using an expandable conduit provided with the formation, without the use of cement. This has significant advantages, particularly in terms of cost due to the reduction of materials required and rig down-time.
- Thus, there is provided a method and apparatus of anchoring an expandable conduit to a second conduit. Certain embodiments of the apparatus and method optionally provide a seal between the expandable conduit and the second conduit. Certain embodiments of the apparatus include a formation of different layers or bands of resilient materials that are specially arranged and composed to provide a good anchor and/or seal between the expandable conduit and the second conduit.
- Modifications and improvements may be made to the foregoing without departing from the scope of the present invention.
Claims (20)
1. A method of expanding a tubular in a wellbore, comprising:
expanding a portion of the tubular, the tubular having at least one resilient member disposed around its outer surface in the expanded area; and
causing the resilient member to contact the wellbore in a sealing and frictional relationship while leaving an annular area defined between the outer tubular wall and the wellbore.
2. The method of claim 1 , further comprising setting an anchor that temporarily retains the tubular prior to causing the resilient member to contact the wellbore.
2. The method of claim 1 , further comprising setting a slip that temporarily retains the tubular prior to causing the resilient member to contact the wellbore.
3. The method of claim 1 , further comprising:
setting an anchor that temporarily retains the tubular prior to causing the resilient member to contact the wellbore; and
releasing the anchor after causing the resilient member to contact the wellbore.
4. The method of claim 1 , wherein the at least one resilient member includes a plurality of resilient members.
5. The method of claim 1 , where the at least one resilient member includes a plurality of resilient members spaced from one another.
6. The expandable liner hanger of claim 1 , wherein the resilient member includes profiles on an outer surface thereof.
7. The expandable liner hanger of claim 1 , wherein the resilient member includes ribs on an outer surface thereof.
8. The expandable liner hanger of claim 1 , wherein the resilient member is a rubber material.
9. An expandable liner hanger for use in a wellbore, comprising:
a tubular body, the body expandable at an upper end thereof;
an resilient ring disposed around the upper end; and
the hanger constructed and arranged to retain and seal the expanded body in the wellbore while leaving an annular area between an outer wall of the expanded body and the wellbore.
10. The expandable liner hanger of claim 9 , wherein the resilient ring includes profiles on an outer surface thereof.
11. The expandable liner hanger of claim 9 , wherein the resilient ring includes ribs on an outer surface thereof.
12. The expandable liner hanger of claim 9 , further comprising at least one additional resilient ring disposed around the upper end.
13. The expandable liner hanger of claim 9 , further comprising at least one additional resilient ring disposed around the upper end, the resilient rings spaced from one another.
14. The expandable liner hanger of claim 9 , further comprising a temporary anchor separate from the resilient ring.
15. The expandable liner hanger of claim 9 , further comprising a temporary anchor separate from the resilient ring, wherein the temporary anchor includes a slip.
16. The expandable liner hanger of claim 9 , wherein the resilient ring is a rubber material.
17. A method of expanding a first tubular in a second tubular located in a wellbore, comprising:
locating a portion of the first tubular within the second tubular, the portion of the first tubular having a resilient member on a section of an outside surface thereof; and
expanding the first tubular at least along the section to a predetermined diameter, the predetermined diameter selected to compress the resilient member in a sealing and frictional relationship between the first and second tubular that remain concentrically spaced from one another.
18. The method of claim 17 , wherein the resilient member includes profiles on an outer surface thereof.
19. The method of claim 17 , further comprising at least one additional resilient member, the resilient members spaced from one another.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/894,302 US20040256098A1 (en) | 1999-09-06 | 2004-07-19 | Apparatus for and a method of anchoring an expandable conduit |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9920936.3A GB9920936D0 (en) | 1999-09-06 | 1999-09-06 | Apparatus for and a method of anchoring an expandable conduit |
GB9920936.3 | 1999-09-06 | ||
US10/069,990 US6789622B1 (en) | 1999-09-06 | 2000-09-06 | Apparatus for and a method of anchoring an expandable conduit |
US10/894,302 US20040256098A1 (en) | 1999-09-06 | 2004-07-19 | Apparatus for and a method of anchoring an expandable conduit |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/069,990 Continuation US6789622B1 (en) | 1999-09-06 | 2000-09-06 | Apparatus for and a method of anchoring an expandable conduit |
PCT/GB2000/003407 Continuation WO2001018355A1 (en) | 1999-09-06 | 2000-09-06 | Apparatus for and a method of anchoring an expandable conduit |
Publications (1)
Publication Number | Publication Date |
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US20040256098A1 true US20040256098A1 (en) | 2004-12-23 |
Family
ID=10860364
Family Applications (2)
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US10/069,990 Expired - Lifetime US6789622B1 (en) | 1999-09-06 | 2000-09-06 | Apparatus for and a method of anchoring an expandable conduit |
US10/894,302 Abandoned US20040256098A1 (en) | 1999-09-06 | 2004-07-19 | Apparatus for and a method of anchoring an expandable conduit |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/069,990 Expired - Lifetime US6789622B1 (en) | 1999-09-06 | 2000-09-06 | Apparatus for and a method of anchoring an expandable conduit |
Country Status (14)
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US (2) | US6789622B1 (en) |
EP (2) | EP1210503B1 (en) |
JP (1) | JP4689911B2 (en) |
AU (1) | AU780057B2 (en) |
CA (1) | CA2390585C (en) |
DE (1) | DE60031693T2 (en) |
DK (1) | DK1210503T3 (en) |
EA (1) | EA003447B1 (en) |
GB (1) | GB9920936D0 (en) |
MX (1) | MXPA02002421A (en) |
NO (1) | NO332064B1 (en) |
NZ (1) | NZ517492A (en) |
OA (1) | OA12014A (en) |
WO (1) | WO2001018355A1 (en) |
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US20050189120A1 (en) * | 2002-04-05 | 2005-09-01 | Baker Hughes Incorporated | Slotted slip element for expandable packer |
US7341110B2 (en) * | 2002-04-05 | 2008-03-11 | Baker Hughes Incorporated | Slotted slip element for expandable packer |
US20040216891A1 (en) * | 2003-05-01 | 2004-11-04 | Maguire Patrick G. | Expandable hanger with compliant slip system |
US20040216894A1 (en) * | 2003-05-01 | 2004-11-04 | Maguire Patrick G. | Solid expandable hanger with compliant slip system |
US7028780B2 (en) * | 2003-05-01 | 2006-04-18 | Weatherford/Lamb, Inc. | Expandable hanger with compliant slip system |
US7093656B2 (en) * | 2003-05-01 | 2006-08-22 | Weatherford/Lamb, Inc. | Solid expandable hanger with compliant slip system |
US8069916B2 (en) | 2007-01-03 | 2011-12-06 | Weatherford/Lamb, Inc. | System and methods for tubular expansion |
CN104879101A (en) * | 2015-05-11 | 2015-09-02 | 中国石油天然气股份有限公司 | Overall well segment expandable screen pipe |
WO2017112884A3 (en) * | 2015-12-22 | 2017-11-30 | Mohawk Energy Ltd. | Expandable anchor sleeve |
US10415336B2 (en) | 2016-02-10 | 2019-09-17 | Mohawk Energy Ltd. | Expandable anchor sleeve |
WO2023196508A1 (en) * | 2022-04-08 | 2023-10-12 | Baker Hughes Oilfield Operations Llc | Liner system and method |
WO2023196501A1 (en) * | 2022-04-08 | 2023-10-12 | Baker Hughes Oilfield Operations Llc | Liner system and method |
US11898423B2 (en) | 2022-04-08 | 2024-02-13 | Baker Hughes Oilfield Operations | Liner system and method |
Also Published As
Publication number | Publication date |
---|---|
DE60031693D1 (en) | 2006-12-14 |
OA12014A (en) | 2006-04-19 |
DK1210503T3 (en) | 2007-03-05 |
DE60031693T2 (en) | 2007-10-04 |
MXPA02002421A (en) | 2005-06-06 |
CA2390585C (en) | 2008-08-19 |
US6789622B1 (en) | 2004-09-14 |
AU780057B2 (en) | 2005-02-24 |
EP1210503A1 (en) | 2002-06-05 |
EP1500784A2 (en) | 2005-01-26 |
WO2001018355A1 (en) | 2001-03-15 |
AU7021100A (en) | 2001-04-10 |
NO20021082L (en) | 2002-03-13 |
GB9920936D0 (en) | 1999-11-10 |
EA003447B1 (en) | 2003-06-26 |
EP1210503B1 (en) | 2006-11-02 |
JP4689911B2 (en) | 2011-06-01 |
NO20021082D0 (en) | 2002-03-05 |
NO332064B1 (en) | 2012-06-11 |
JP2003508662A (en) | 2003-03-04 |
EA200200343A1 (en) | 2002-10-31 |
CA2390585A1 (en) | 2001-03-15 |
NZ517492A (en) | 2003-08-29 |
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Legal Events
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |