CA2491300A1 - Dovetail thread coupling for expandable tubulars - Google Patents

Dovetail thread coupling for expandable tubulars Download PDF

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Publication number
CA2491300A1
CA2491300A1 CA002491300A CA2491300A CA2491300A1 CA 2491300 A1 CA2491300 A1 CA 2491300A1 CA 002491300 A CA002491300 A CA 002491300A CA 2491300 A CA2491300 A CA 2491300A CA 2491300 A1 CA2491300 A1 CA 2491300A1
Authority
CA
Canada
Prior art keywords
tubular
coupling arrangement
coupling
thread portion
flanks
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
CA002491300A
Other languages
French (fr)
Other versions
CA2491300C (en
Inventor
Neil Andrew Abercrombie Simpson
Simon John Harrall
Paul David Metcalfe
Neil James Glover
Andrew Michael Duggan
David Stephenson
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
Priority to CA2759774A priority Critical patent/CA2759774C/en
Publication of CA2491300A1 publication Critical patent/CA2491300A1/en
Application granted granted Critical
Publication of CA2491300C publication Critical patent/CA2491300C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/08—Casing joints
    • 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
    • E21B43/106—Couplings or joints therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/003—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F16L15/008—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/006—Screw-threaded joints; Forms of screw-threads for such joints with straight threads
    • F16L15/009—Screw-threaded joints; Forms of screw-threads for such joints with straight threads with axial sealings having at least one plastically deformable sealing surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/02—Screw-threaded joints; Forms of screw-threads for such joints allowing substantial longitudinal adjustment by use of a long screw-threaded part
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/49—Member deformed in situ
    • Y10T403/4924—Inner member is expanded by longitudinally inserted element

Abstract

An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular. The thread portions comprise dovetail threads having flanks, roots and crests, wherein the flanks are inclined at an angle of greater than 10~.

Claims (47)

1. A diametrically expandable coupling arrangement for coupling diametrically expandable first and second tubulars, the coupling arrangement comprising:
a male thread portion on an end portion of a first tubular; and a female thread portion on an end portion of a second tubular, the thread portions comprising dovetail threads having flanks inclined at an angle of greater than 10°.
2. The coupling arrangement of claim 1, wherein the coupling arrangement is adapted for expansion by a rotary expansion tool.
3. The coupling of claim 2, wherein the thread portions define a thread cut in an opposite direction to the intended direction of rotation of the rotary expansion tool.
4. The coupling of claim 1, 2 or 3, wherein each thread portion has stab flanks and load flanks, and both the stab flanks and the load flanks of each respective thread portion are inclined at substantially the same angle.
5. The coupling of claim 1, 2, 3 or 4, wherein the flanks are inclined at an angle of greater than 15°.
6. The coupling of any of the preceding claims, wherein the flanks of the male thread portion are inclined at an angle of less than 80° to the male thread portion roots.
7. The coupling of any of the preceding claims, wherein the flanks of the male thread portion are inclined at an angle of less than 75° to the male thread portion roots.
8. The coupling of any of the preceding claims, wherein the flanks of the female thread portion are inclined at an angle of less than 80° to the female thread portion roots.
9. The coupling of any of the preceding claims, wherein the flanks of the female thread portion are inclined at an angle of less than 75° to the female thread portion roots.
10. The coupling arrangement of any of the preceding claims, wherein the thread portions are parallel.
11. The coupling arrangement of any of claims 1 to 9, wherein the thread portions are tapered.
12. The coupling arrangement of any of claims 1 to 9, wherein the thread portions are stepped.
13. The coupling arrangement of any of the preceding claims, wherein the first tubular has a leading end portion adapted to be radially constrained by the second tubular.
14. The coupling arrangement of any of the preceding claims, wherein the second tubular defines an undercut groove adapted to receive the leading end portion of the first tubular.
15. The coupling arrangement of any of the preceding claims, wherein the second tubular defines a groove adapted to receive the leading end of the first. tubular, the groove extending axially and being dimensioned to accommodate relative axial extension of the first tubular.
16. The coupling arrangement of claim 15, wherein the groove accommodates a deformable seal.
17. The coupling arrangement of claim 16, wherein the deformable seal is of an elastomer, adapted to be energised by relative axial extension of the first tubular.
18. The coupling arrangement of claim 16, wherein the deformable seal comprises a material which swells when exposed to a selected material.
19. The coupling arrangement of any of claims 14 to 18, wherein the groove features a rounded recess angle.
20. The coupling arrangement of any of the preceding claims, wherein the first tubular comprises at least one sealing member for sealing engagement with an opposing surface of the second tubular.
21. The coupling arrangement of claim 20, wherein the at least one sealing member is arranged and located for sealing engagement with an opposing surface adjacent a free end of the second tubular.
22. The coupling arrangement of claim 21, wherein the at least one sealing member is arranged and located for sealing engagement with a surface spaced sufficiently from the free end of the second tubular to accommodate axial shrinkage of the tubular following expansion.
23. The coupling arrangement of claim 21 or 22, wherein the at least one sealing member is arranged and located such that the end effect of the free end of the second tubular following expansion serves to energise the sealing member.

18~
24. The coupling arrangement of any of claims 20 to 23, wherein the sealing member comprises an elastomer.
25. The coupling arrangement of any of claims 20 to 24, wherein at least two axially spaced sealing members are provided.
26. The coupling arrangement of any of claims 20 to 25, wherein the at least one sealing member is located in a groove in the first tubular.
27. The coupling arrangement of any of claims 20 to 26, wherein the at least one sealing member comprises a material which swells when exposed to a selected material.
28. The coupling arrangement of claim 27, wherein the at least one sealing member comprises a swelling elastomer.
29. The coupling arrangement of claim 28, wherein two or more sealing members are provided and are adapted to swell in response to contact with different fluids.
30. The coupling arrangement of any of the preceding claims, wherein the free end of the first tubular arranged to permit axial movement of the free end relative to the second tubular.
31. The coupling arrangement of any of the preceding claims, wherein the material properties of the male and female threads are selected to facilitate engagement of the threads on the coupling being subject to rotary expansion.
32. The coupling arrangement of any of the preceding claims, wherein the thread portions are metallic.
33. The coupling arrangement of any of the preceding claims, wherein at least some of the crests of the threads are adapted to extend axially on expansion of the coupling.
34. The coupling arrangement of any of the preceding claims, wherein at least some of the crests of the threads comprise a relief.
35. The coupling arrangement of any of the preceding claims, wherein at least some of the roots of the threads comprise a spreader.
36. The coupling arrangement of claim 35, wherein the spreader comprises a rib.
37. A tubular comprising a male thread portion on an end thereof, the thread portion comprising dovetail threads having flanks inclined at an angle of greater than 10°.
38. A tubular comprising a female thread portion on an end thereof, the thread portion comprising dovetail threads having flanks inclined at an angle of greater than 10°.
39. A tubular string comprising first and second tubulars and comprising:
a male thread portion on an end portion of the first tubular; and a female thread portion on an end portion of the second tubular, the thread portions comprising dovetail threads having flanks inclined at an angle of greater than 10°.
40. A coupling arrangement for first and second tubulars comprising:
a male thread portion on an end portion of a first tubular; and a female thread portion on an end portion of a second tubular, wherein a free end of the first tubular is not threaded, to permit axial movement of the free end relative to the second tubular.
41. A method of expanding a threaded coupling comprising:
providing a coupling having a thread cut in one direction; and passing a rotary expansion tool through the coupling while rotating the tool in the other direction.
42. A diametrically expandable coupling arrangement for coupling diametrically expandable first and second tubulars, the coupling arrangement comprising:
a male thread portion on an end portion of a first tubular; and a female thread portion on an end portion of a second tubular, the thread portions comprising dovetail threads having at least some crests adapted to extend axially on expansion of the coupling.
43. The coupling arrangement of claim 42, wherein at least some of the crests of the threads comprise a relief.
44. The coupling arrangement of claim 42 or 43 , wherein at least some of the roots of the threads comprise a spreader.
45. The coupling arrangement of claim 44, wherein the spreader comprises a rib.
46. A method of expanding a threaded coupling comprising:
providing a coupling having male and female thread portions, the thread portions comprising dovetail threads having flanks inclined at an angle of greater than 10°; and passing a rotary expansion tool through the coupling.
47. An expandable coupling arrangement for first and second expandable tubulars, the coupling arrangement comprising:
a male thread portion on an end portion of a first tubular; and a female thread portion on an end portion of a second tubular, the second tubular defining an undercut groove adapted to receive the leading end portion of the first tubular, the thread portions comprising dovetail threads having flanks inclined at an angle of greater than 10°.
CA2491300A 2002-07-06 2003-07-03 Dovetail thread coupling for expandable tubulars Expired - Fee Related CA2491300C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2759774A CA2759774C (en) 2002-07-06 2003-07-03 Methods for expanding threaded tubulars

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0215668.5 2002-07-06
GBGB0215668.5A GB0215668D0 (en) 2002-07-06 2002-07-06 Coupling tubulars
PCT/GB2003/002854 WO2004005665A2 (en) 2002-07-06 2003-07-03 Dovetail thread coupling for expandable tubulars

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2759774A Division CA2759774C (en) 2002-07-06 2003-07-03 Methods for expanding threaded tubulars

Publications (2)

Publication Number Publication Date
CA2491300A1 true CA2491300A1 (en) 2004-01-15
CA2491300C CA2491300C (en) 2012-05-29

Family

ID=9939958

Family Applications (3)

Application Number Title Priority Date Filing Date
CA2759774A Expired - Fee Related CA2759774C (en) 2002-07-06 2003-07-03 Methods for expanding threaded tubulars
CA2893214A Abandoned CA2893214A1 (en) 2002-07-06 2003-07-03 Methods for expanding threaded tubulars
CA2491300A Expired - Fee Related CA2491300C (en) 2002-07-06 2003-07-03 Dovetail thread coupling for expandable tubulars

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CA2759774A Expired - Fee Related CA2759774C (en) 2002-07-06 2003-07-03 Methods for expanding threaded tubulars
CA2893214A Abandoned CA2893214A1 (en) 2002-07-06 2003-07-03 Methods for expanding threaded tubulars

Country Status (7)

Country Link
US (2) US20040017081A1 (en)
EP (2) EP1762697A3 (en)
AU (1) AU2003251145A1 (en)
CA (3) CA2759774C (en)
DE (1) DE60324800D1 (en)
GB (1) GB0215668D0 (en)
WO (1) WO2004005665A2 (en)

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WO2004005665A3 (en) 2004-04-29
AU2003251145A1 (en) 2004-01-23
DE60324800D1 (en) 2009-01-02
EP1762697A3 (en) 2007-11-28
GB0215668D0 (en) 2002-08-14
US20080007060A1 (en) 2008-01-10
CA2893214A1 (en) 2004-01-15
EP1520083B1 (en) 2008-11-19
CA2491300C (en) 2012-05-29
US20040017081A1 (en) 2004-01-29
US7578043B2 (en) 2009-08-25
AU2003251145A8 (en) 2004-01-23
EP1520083A2 (en) 2005-04-06

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