CA2689034A1 - Method of drilling and completing multiple wellbores inside a single caisson - Google Patents

Method of drilling and completing multiple wellbores inside a single caisson Download PDF

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Publication number
CA2689034A1
CA2689034A1 CA002689034A CA2689034A CA2689034A1 CA 2689034 A1 CA2689034 A1 CA 2689034A1 CA 002689034 A CA002689034 A CA 002689034A CA 2689034 A CA2689034 A CA 2689034A CA 2689034 A1 CA2689034 A1 CA 2689034A1
Authority
CA
Canada
Prior art keywords
casing
wellbore
diverting
drilling
forming
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
CA002689034A
Other languages
French (fr)
Other versions
CA2689034C (en
Inventor
Mark C. Glaser
Jack R. Allen
Gerald M. Ferguson
Ralph A. Alvarez
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 Lamb Inc
Original Assignee
Weatherford/Lamb, Inc.
Mark C. Glaser
Jack R. Allen
Gerald M. Ferguson
Ralph A. Alvarez
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., Mark C. Glaser, Jack R. Allen, Gerald M. Ferguson, Ralph A. Alvarez filed Critical Weatherford/Lamb, Inc.
Publication of CA2689034A1 publication Critical patent/CA2689034A1/en
Application granted granted Critical
Publication of CA2689034C publication Critical patent/CA2689034C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • 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
    • E21B23/08—Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
    • E21B23/12—Tool diverters
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/04—Casing heads; Suspending casings or tubings in well heads
    • E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
    • 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
    • E21B41/0035—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
    • 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
    • E21B43/14—Obtaining from a multiple-zone 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/30—Specific pattern of wells, e.g. optimizing the spacing of wells
    • E21B43/305—Specific pattern of wells, e.g. optimizing the spacing of wells comprising at least one inclined or horizontal 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Abstract

A method and apparatus for drilling and completing multiple wellbores from a single drilling rig and from within a single wellhead is provided. In one embodiment, a template is disposed at a predetermined location downhole within a casing.
In one aspect, a first casing string is lowered with the template to the predetermined location and disposed within a first wellbore. A second wellbore may be drilled through a bore in the template. A second casing string may then be lowered through the bore into the second wellbore. In another embodiment, at least two wellbores are drilled and completed from a surface casing having a crossover portion.

Claims (26)

1. A method for drilling at least two wellbores into an earth formation from a casing within a parent wellbore using one wellhead, comprising:
providing the casing extending downhole from a surface of the formation, the casing having a first portion and a second portion, the second portion having a smaller inner diameter than the first portion;
forming a first wellbore in the formation from the second portion; and forming a second wellbore from the first portion by drilling through a wall of the casing and into the formation.
2. The method of claim 1, further comprising placing a first casing within the first wellbore.
3. The method of claim 2, further comprising positioning a diverting mechanism above the first casing within the casing.
4. The method of claim 3, further comprising forming the second wellbore by lowering a drilling mechanism into the casing and diverting the drilling mechanism into the second wellbore using the diverting mechanism.
5. The method of claim 4, further comprising operatively connecting the first casing to a surface of the wellbore using a tie-back casing.
6. The method of claim 5, wherein the tie-back casing comprises a deflector member operatively connected to its outer surface having a deflecting surface sloping towards the second wellbore.
7. The method of claim 6, further comprising placing a second casing in the second wellbore by lowering the second casing into the casing and moving the second casing over the deflecting surface into the second wellbore.
8. The method of claim 3, further comprising a deflector member extending from the casing wall below a desired location for the second wellbore.
9. The method of claim 8, wherein the deflector member and the diverting mechanism together form a diverting surface.
10. The method of claim 9, further comprising forming the second wellbore by lowering a drilling mechanism into the casing and diverting the drilling mechanism into the second wellbore using the diverting surface.
11. The method of claim 9, wherein the deflector member and the diverting mechanism include mating profiles on outer surfaces thereof for preventing rotation of the deflector member relative to the casing.
12. The method of claim 8, wherein an outer surface of the diverting mechanism and the inner diameter of the casing comprise mating profiles thereon for preventing rotation of the deflector member relative to the casing.
13. The method of claim 3, wherein the diverting mechanism includes an extending end for placement into the second portion to prevent rotation of the diverting mechanism relative to the casing.
14. The method of claim 2, further comprising plugging an inner diameter of the first casing.
15. The method of claim 2, further comprising placing a second casing within the second wellbore.
16. The method of claim 1, wherein the second portion is axially offset from the first portion.
17. The method of claim 4, further comprising guiding a first casing into the first wellbore using a guiding portion of the casing, the guiding portion connecting the first portion to the second portion.
18. The method of claim 1, wherein the first and second wellbores are formed from the same wellhead without moving the wellhead.
19. A method of forming first and second wellbores from a casing using a common wellhead, comprising:
providing the casing in a wellbore, the casing comprising:
an upper portion having a first inner diameter;
a lower portion having a second, smaller inner diameter; and a connecting portion connecting the upper and lower portions, the centerlines of the upper and lower portions offset;
forming the first wellbore from the lower portion; and forming the second wellbore into the formation through a wall of the upper portion, using the connecting portion as a guide.
20. The method of claim 19, further comprising placing a first casing within the first wellbore prior to forming the second wellbore.
21. The method of claim 20, further comprising placing a diverting mechanism having a sloped surface on the connecting portion after placing the first casing within the first wellbore.
22. The method of claim 21, further comprising guiding a drilling tool along the sloped surface.
23. The method of claim 22, further comprising drilling through the wall of the upper portion and forming the second wellbore using the drilling tool.
24. The method of claim 23, further comprising tying back the first casing to the surface using tie-back casing.
25. The method of claim 24, wherein the tie-back casing comprises a deflector member operatively connected to its outer surface.
26. The method of claim 25, further comprising guiding a second casing into the second wellbore using the deflector member.
CA2689034A 2003-10-03 2004-10-04 Method of drilling and completing multiple wellbores inside a single caisson Expired - Fee Related CA2689034C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US50874303P 2003-10-03 2003-10-03
US60/508,743 2003-10-03
CA2483957A CA2483957C (en) 2003-10-03 2004-10-04 Method of drilling and completing multiple wellbores inside a single caisson

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA2483957A Division CA2483957C (en) 2003-10-03 2004-10-04 Method of drilling and completing multiple wellbores inside a single caisson

Publications (2)

Publication Number Publication Date
CA2689034A1 true CA2689034A1 (en) 2005-04-03
CA2689034C CA2689034C (en) 2012-04-17

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
CA2483957A Expired - Fee Related CA2483957C (en) 2003-10-03 2004-10-04 Method of drilling and completing multiple wellbores inside a single caisson
CA2689034A Expired - Fee Related CA2689034C (en) 2003-10-03 2004-10-04 Method of drilling and completing multiple wellbores inside a single caisson

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2483957A Expired - Fee Related CA2483957C (en) 2003-10-03 2004-10-04 Method of drilling and completing multiple wellbores inside a single caisson

Country Status (3)

Country Link
US (1) US7264067B2 (en)
CA (2) CA2483957C (en)
GB (2) GB2406595B (en)

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CA2483957C (en) 2010-02-23
GB0421989D0 (en) 2004-11-03
GB2406595A (en) 2005-04-06
GB2406595B (en) 2007-12-27
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CA2483957A1 (en) 2005-04-03
GB2406595A8 (en) 2006-04-24
US20050194188A1 (en) 2005-09-08
CA2689034C (en) 2012-04-17
US7264067B2 (en) 2007-09-04
GB0707336D0 (en) 2007-05-23
GB2434606B (en) 2007-12-27

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