GB2611241A - Weld-on casing connector with enhanced load carrying capacity - Google Patents

Weld-on casing connector with enhanced load carrying capacity Download PDF

Info

Publication number
GB2611241A
GB2611241A GB2219276.9A GB202219276A GB2611241A GB 2611241 A GB2611241 A GB 2611241A GB 202219276 A GB202219276 A GB 202219276A GB 2611241 A GB2611241 A GB 2611241A
Authority
GB
United Kingdom
Prior art keywords
weld
carrying capacity
load carrying
casing
casing connector
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.)
Pending
Application number
GB2219276.9A
Other versions
GB202219276D0 (en
Inventor
Kumar Gupta Pramod
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.)
United Drilling Tools Ltd
Original Assignee
United Drilling Tools Ltd
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 United Drilling Tools Ltd filed Critical United Drilling Tools Ltd
Publication of GB202219276D0 publication Critical patent/GB202219276D0/en
Publication of GB2611241A publication Critical patent/GB2611241A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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 OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK 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
    • 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
    • F16L15/06—Screw-threaded joints; Forms of screw-threads for such joints characterised by the shape of the screw-thread
    • 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
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/10—Indicators for correct coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

The present invention relates to a weld-on casing connector (1) with enhanced load carrying capacity as well as easy and smooth make-up, better sealing performance, over torque elimination, reduced stress levels and related cracking and corrosion. Said weld-on casing connector (1) comprises a box member (2) and pin member (3), wherein said weld-on casing connector (1) has an elevator shoulder (5) that helps in lifting of a partly assembled or dis-assembled string of a casing pipe (14).

Claims (13)

1. A weld-on casing connector (1) with enhanced load carrying capacity, comprising: a box member (2); and a pin member (3); wherein; said box member (2) is provided with threads on its inner surface along with a profiled seat that matches a protruding part of said pin member (3), and an elevator shoulder (5) that helps in lifting of a partly assembled or dis-assembled string of a casing pipe (14); said pin member (3) is provided with threads on its outer surface for matching with threads on inner surface of said box member (2) along with a load shoulder (8) that aligns with a free end (16) of said box member (2) when said box member (2) and pin member (3) are fully threaded, and provides a visual indication (9) of the fully threaded connection; said pin member (3) and said box member (2) are hollow to permit flow of fluid through them; and said weld-on casing connector (1) has a predefined thread profile for achieving an optimal performance and a clearance (12) that is provided between the outer surface of said pin member (3) and the inner surface of said box member (2).
2. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said box member (2) and said pin member (3) are made of a material grade selected from a group of materials including but not limited to AISI 4130 or X70 (material grade as per API 5L), such that the strength of the connector (1) increases.
3. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said weld-on casing connector (1) is made of a material having yield strength ranging from 70 ksi to 110 ksi.
4. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said predefined thread profile is modified buttress thread (4) profile provided on both said box member (2) and said pin member (3).
5. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 4, wherein said modified buttress thread (4) profile has a load flank angle from 2° to 3°, stab flank angle ranging from 25° to 28° and taper angle ranging from 8° to 12°.
6. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said box member (2) and pin member (3) has an O-ring seal (10) to ensure no leakage.
7. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said pin member (3) has a groove (15) on its outer surface for adopting said O-ring seal (10).
8. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said pin member (3) has a stab guide (6) at the free end (7).
9. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said box member (2) has a welding portion (11) provided for welding to the casing string by using a welding method.
10. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said box member (2) at one end forms a welding joint (13) to said casing pipe (14) while other end of said box member (2) is a free end (16).
11. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said improved weld-on connector (1) is enabled for all different connectors for different casing sizes.
12. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said protruding part is provided near the free end (7) of said pin member (3).
13. The weld-on casing connector (1) with enhanced load carrying capacity as claimed in claim 1, wherein said clearance (12) is in the range from 0.75 to 2.0 mm.
GB2219276.9A 2020-06-22 2021-06-22 Weld-on casing connector with enhanced load carrying capacity Pending GB2611241A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202011026403 2020-06-22
PCT/IN2021/050606 WO2021260728A1 (en) 2020-06-22 2021-06-22 Weld-on casing connector with enhanced load carrying capacity

Publications (2)

Publication Number Publication Date
GB202219276D0 GB202219276D0 (en) 2023-02-01
GB2611241A true GB2611241A (en) 2023-03-29

Family

ID=79282269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2219276.9A Pending GB2611241A (en) 2020-06-22 2021-06-22 Weld-on casing connector with enhanced load carrying capacity

Country Status (2)

Country Link
GB (1) GB2611241A (en)
WO (1) WO2021260728A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505502A (en) * 1993-06-09 1996-04-09 Shell Oil Company Multiple-seal underwater pipe-riser connector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5505502A (en) * 1993-06-09 1996-04-09 Shell Oil Company Multiple-seal underwater pipe-riser connector

Also Published As

Publication number Publication date
WO2021260728A1 (en) 2021-12-30
GB202219276D0 (en) 2023-02-01

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