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EP0261909A3 - Casing hanger systems - Google Patents

Casing hanger systems Download PDF

Info

Publication number
EP0261909A3
EP0261909A3 EP87308330A EP87308330A EP0261909A3 EP 0261909 A3 EP0261909 A3 EP 0261909A3 EP 87308330 A EP87308330 A EP 87308330A EP 87308330 A EP87308330 A EP 87308330A EP 0261909 A3 EP0261909 A3 EP 0261909A3
Authority
EP
European Patent Office
Prior art keywords
hanger
split ring
ring
running
receiving
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.)
Withdrawn
Application number
EP87308330A
Other languages
German (de)
French (fr)
Other versions
EP0261909A2 (en
Inventor
Bernard Herman Van Bilderbeek
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.)
Plexus Ocean Systems Ltd
Original Assignee
Plexus Ocean Systems 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
Priority claimed from GB868622859A external-priority patent/GB8622859D0/en
Priority claimed from GB868626046A external-priority patent/GB8626046D0/en
Priority claimed from GB878705371A external-priority patent/GB8705371D0/en
Priority claimed from GB878709430A external-priority patent/GB8709430D0/en
Application filed by Plexus Ocean Systems Ltd filed Critical Plexus Ocean Systems Ltd
Publication of EP0261909A2 publication Critical patent/EP0261909A2/en
Publication of EP0261909A3 publication Critical patent/EP0261909A3/en
Withdrawn legal-status Critical Current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
    • 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
    • E21B33/043—Casing heads; Suspending casings or tubings in well heads specially adapted for underwater well heads

Landscapes

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

Abstract

A casing hanger system, particularly for mudline hangers in offshore wells. An inner casing string (24) which includes a running hanger body (20) is suspended by a split ring hanger (40) from an outer casing (44) which includes a receiving hanger (52). The receiving hanger (52) and split ring hanger (40) have complementary profiles (58,60) which lock together when the split ring (40) expands. The split ring (40) is carried down through the outer casing (44) contracted into an annular recess (28) in the running hanger body (20), and temporarily restrained to the lower end of the recess (28). When the running hanger body (20) reaches the receiving hanger (52), the split ring (40) expands so that the complementary profiles (58,60) engage and suspend the ring from the receiving hanger (52). The temporary restraint is released, and the running hanger body (20) descends a further short distance until the upper end (30) of the annular recess lands on the ring (40) to suspend the inner casing string (24) on the ring (40). Two annular arms (48,46) on the recess (28) apply positive locking to the split ring hanger (40) in this position. With dual positive locking, the split ring hanger regains hoop strength.
EP87308330A 1986-09-23 1987-09-21 Casing hanger systems Withdrawn EP0261909A3 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
GB868622859A GB8622859D0 (en) 1986-09-23 1986-09-23 Casing hanger system
GB8622859 1986-09-23
GB8626046 1986-10-31
GB868626046A GB8626046D0 (en) 1986-10-31 1986-10-31 Casing hanger system
GB878705371A GB8705371D0 (en) 1987-03-07 1987-03-07 Spring-loaded ring
GB8705371 1987-03-07
GB8709430 1987-04-21
GB878709430A GB8709430D0 (en) 1987-04-21 1987-04-21 Spring-loaded ring

Publications (2)

Publication Number Publication Date
EP0261909A2 EP0261909A2 (en) 1988-03-30
EP0261909A3 true EP0261909A3 (en) 1989-03-22

Family

ID=27449817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87308330A Withdrawn EP0261909A3 (en) 1986-09-23 1987-09-21 Casing hanger systems

Country Status (2)

Country Link
EP (1) EP0261909A3 (en)
NO (1) NO873953L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4919460A (en) * 1989-02-06 1990-04-24 Vetco Gray Inc. Wellhead casing hanger support mechanism
US4911244A (en) * 1989-06-30 1990-03-27 Cameron Iron Works Usa, Inc. Marine casing suspension apparatus
CA2025682A1 (en) * 1989-10-18 1991-04-19 Jack E. Miller Casing suspension system
US5620052A (en) * 1995-06-07 1997-04-15 Turner; Edwin C. Hanger suspension system
CN103967436A (en) * 2014-05-19 2014-08-06 江苏金石科技有限公司 Underwater wellhead mud line hanger
US12188322B2 (en) 2021-08-06 2025-01-07 Baker Hughes Oilfield Operations Llc Lockdown ring using a self-locking wedge

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295665A (en) * 1979-09-04 1981-10-20 Petroleum Designers, Inc. Well casing suspension system
US4355825A (en) * 1980-10-15 1982-10-26 Cameron Iron Works, Inc. Mudline suspension system
GB2120300A (en) * 1982-05-03 1983-11-30 Dril Quip Inc Wellhead apparatus
US4534583A (en) * 1982-11-12 1985-08-13 Combustion Engineering, Inc. Mudline casing hanger assembly
GB2165609A (en) * 1984-10-16 1986-04-16 Vetco Offshore Ind Inc Ratchet pipe connector

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4295665A (en) * 1979-09-04 1981-10-20 Petroleum Designers, Inc. Well casing suspension system
US4355825A (en) * 1980-10-15 1982-10-26 Cameron Iron Works, Inc. Mudline suspension system
GB2120300A (en) * 1982-05-03 1983-11-30 Dril Quip Inc Wellhead apparatus
US4534583A (en) * 1982-11-12 1985-08-13 Combustion Engineering, Inc. Mudline casing hanger assembly
GB2165609A (en) * 1984-10-16 1986-04-16 Vetco Offshore Ind Inc Ratchet pipe connector

Also Published As

Publication number Publication date
NO873953D0 (en) 1987-09-22
NO873953L (en) 1988-03-24
EP0261909A2 (en) 1988-03-30

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Legal Events

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Effective date: 19890923

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VAN BILDERBEEK, BERNARD HERMAN