CA2471488A1 - Bore isolation - Google Patents

Bore isolation Download PDF

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Publication number
CA2471488A1
CA2471488A1 CA002471488A CA2471488A CA2471488A1 CA 2471488 A1 CA2471488 A1 CA 2471488A1 CA 002471488 A CA002471488 A CA 002471488A CA 2471488 A CA2471488 A CA 2471488A CA 2471488 A1 CA2471488 A1 CA 2471488A1
Authority
CA
Canada
Prior art keywords
tubing
section
bore
expanding
locating
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.)
Granted
Application number
CA002471488A
Other languages
French (fr)
Other versions
CA2471488C (en
Inventor
Andrew Michael Duggan
Gareth Innes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weatherford Technology Holdings LLC
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2471488A1 publication Critical patent/CA2471488A1/en
Application granted granted Critical
Publication of CA2471488C publication Critical patent/CA2471488C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/10—Reconditioning of well casings, e.g. straightening
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • 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

Abstract

A method of isolating a section of a drilled bore (10) containing a problem zone (12) comprises: providing a section of tubing (16); locating the tubing in the section of the bore; and expanding the tubing and forming at least an outer portion (20) of the tubing to conform to irregularities in the bore wall, to isolate the problem zone. The tubing may feature a formable outer section (20), and the expansion of the tubing may be achieved using a compliant rotary expander.

Claims (43)

1. A method of isolating a section of a drilled bore, the method comprising the steps of:
providing a section of tubing;
locating the tubing in a section of a bore;
expanding the tubing and to isolate at least a portion of the bore wall.
2. The method of claim 1, comprising forming at least an outer portion of the tubing to conform to irregularities in the bore wall.
3. The method of claim 1 or 2, comprising locating the section of tubing across a problem zone, and isolating the problem zone from the bore with the expanded tubing.
4. The method of claim 3, wherein the problem zone is a loss zone.
5. The method of claim 3, wherein the problem zone is an over pressured zone.
6. The method of claim 3, wherein the problem zone is a water-producing zone.
7. The method of claim 3, wherein the problem zone is a section of bore where a mechanical collapse has occurred or is considered likely to occur.
8. The method of any of the preceding claims, comprising the steps of:
providing a tubing section having a tubing wall comprising a structural layer and an outer relatively formable layer; and expanding the tubing such that the outer relatively formable layer contacts the bore wall and is deformed on contact with the bore wall to provide a contact area which follows the irregularities of the bore wall.
9. The method of claim 8, wherein the outer relatively formable layer swells to ensure contact with the bore wall.
10. The method of any of the preceding claims, comprising expanding the tubing to provide a hydraulic seal between the tubing and the bore wall.
11. The method of any of the preceding claims, comprising expanding the tubing beyond its yield point.
12. The method of any of the preceding claims, comprising locating the tubing in a bore below an existing section of bore-lining tubing.
13. The method of claim 12, comprising locating the section of tubing such that an upper end of the expanded tubing overlaps the existing tubing.
14. The method of claim 13, comprising expanding the upper end of the section of tubing to form a seal with the existing tubing.
15. The method of any of claims 1 to 12, comprising locating the tubing within an open or unlined portion of the bore, spaced from existing tubing.
16. The method of any of the preceding claims, further comprising drilling a section of bore below an existing section of bore-lining tubing to a larger diameter than the inner diameter of the existing tubing and expanding the section of tubing placed below the existing tubing to a diameter similar to that of the existing tubing.
17. The method of claim 16, further comprising drilling a lower portion of said section of bore to a larger diameter than an upper section of the bore, and expanding a lower portion of the section of tubing to a larger expanded diameter than an upper section of the tubing.
18. The method of claim 17, further comprising locating an upper end of a further tubing section in said larger diameter lower portion, and expanding said further tubing section.
19. The method of any of the preceding claims, comprising expanding the tubing using a variable diameter expansion device.
20. The method of any of the preceding claims, comprising expanding the section of tubing using a compliant rotary expansion device.
21. The method of any of the preceding claims, comprising expanding the section of tubing using a compliant axial expansion device.
22. The method of any of the preceding claims, comprising expanding the section of tubing using a fixed diameter expansion device.
23. The method of any of the preceding claims, comprising injecting a cement slurry into an annulus between the section of tubing and the bore wall.
24. The method of any of the preceding claims, comprising locating at least a portion of the tubing in an unlined section of the drilled bore.
25. The method of any of the preceding claims, comprising locating substantially all of the tubing in an unlined section of the drilled bore.
26. The method of any of claims 1 to 24, comprising locating at least a portion of the tubing in a lined section of the drilled bore.
27. The method of claim 26, comprising locating substantially all of the tubing in a lined section of the drilled bore.
28. A method of isolating a section of a drilled bore, the method comprising the steps of:
providing a section of tubing;
locating at least a portion of the tubing in an unlined section of a drilled bore;
expanding the tubing and to isolate at least a portion of the bore wall.
29. The method of claim 28, comprising forming at least an outer portion of the tubing to conform to irregularities in the unlined section of bore wall.
30. The method of claim 28 or 29, comprising expanding the tubing into contact with the unlined section of bore wall.
31. Apparatus for use in isolating a problem zone in a bore, the apparatus comprising a section of expandable tubing and an expansion device, whereby the expansion device is operable to expand the tubing into contact with a section of surrounding bore wall.
32. The apparatus of claim 31, wherein at least a portion of the tubing is adapted to conform to a section of unlined bore wall.
33. The apparatus of claim 31 or 32, wherein at least a portion of the tubing is adapted to conform to a section of lined bore wall.
34. The apparatus of claim 31, wherein the tubing is adapted to conform to both a section of unlined bore wall and a section of lined bore wall.
35. The apparatus of any of claims 31 to 34, wherein the tubing has a compliant outer portion.
36. The apparatus of any of claims 31 to 35, wherein the tubing wall comprises a structural layer and an outer relatively formable layer for contact with the bore wall.
37. The apparatus of claim 36, wherein the formable layer is of an elastomer.
38. The apparatus of claim 36 or 37, wherein the outer layer is of a material adapted to swell in situ.
39. The apparatus of any of claims 31 to 38, wherein the tubing is selected such that, on expansion, the tubing wall will pass through yield.
40. The apparatus of any of claims 31 to 39, wherein the expansion device comprises a variable diameter expansion tool.
41. The apparatus of any of the claims 31 to 40, wherein the expansion device comprises a compliant rotary expander.
42. The apparatus of any of claims 31 to 91, wherein the expansion device comprises a compliant axial expansion device.
43. The apparatus of any of claims 31 to 42, wherein the expansion device comprises a fixed diameter expansion tool.
CA2471488A 2001-12-27 2002-12-27 Bore isolation Expired - Lifetime CA2471488C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0131019.2A GB0131019D0 (en) 2001-12-27 2001-12-27 Bore isolation
GB0131019.2 2001-12-27
PCT/GB2002/005933 WO2003060289A1 (en) 2001-12-27 2002-12-27 Bore isolation

Publications (2)

Publication Number Publication Date
CA2471488A1 true CA2471488A1 (en) 2003-07-24
CA2471488C CA2471488C (en) 2010-05-11

Family

ID=9928441

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2471488A Expired - Lifetime CA2471488C (en) 2001-12-27 2002-12-27 Bore isolation

Country Status (6)

Country Link
US (2) US7066259B2 (en)
AU (1) AU2002356333A1 (en)
CA (1) CA2471488C (en)
GB (2) GB0131019D0 (en)
NO (1) NO334741B1 (en)
WO (1) WO2003060289A1 (en)

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Also Published As

Publication number Publication date
AU2002356333A1 (en) 2003-07-30
US7798223B2 (en) 2010-09-21
US20060283607A1 (en) 2006-12-21
CA2471488C (en) 2010-05-11
GB2398815B (en) 2005-11-16
US7066259B2 (en) 2006-06-27
GB2398815A (en) 2004-09-01
NO20042135L (en) 2004-07-15
GB0131019D0 (en) 2002-02-13
US20030146003A1 (en) 2003-08-07
GB0410908D0 (en) 2004-06-16
WO2003060289A1 (en) 2003-07-24
NO334741B1 (en) 2014-05-19

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