CA1202885A - Subsea wellhead system - Google Patents

Subsea wellhead system

Info

Publication number
CA1202885A
CA1202885A CA000421586A CA421586A CA1202885A CA 1202885 A CA1202885 A CA 1202885A CA 000421586 A CA000421586 A CA 000421586A CA 421586 A CA421586 A CA 421586A CA 1202885 A CA1202885 A CA 1202885A
Authority
CA
Canada
Prior art keywords
casing hanger
seal
wellhead
holddown
metal
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.)
Expired
Application number
CA000421586A
Other languages
French (fr)
Other versions
CA1271789C (en
Inventor
Benton F Baugh
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.)
Smith International Inc
Original Assignee
Smith International Inc
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 US06/348,735 external-priority patent/US4615544A/en
Priority claimed from US06/350,374 external-priority patent/US4488740A/en
Application filed by Smith International Inc filed Critical Smith International Inc
Priority to CA000487752A priority Critical patent/CA1271789A/en
Publication of CA1202885A publication Critical patent/CA1202885A/en
Application granted granted Critical
Publication of CA1271789C publication Critical patent/CA1271789C/xx
Expired 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
    • 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
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
    • F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/01—Sealings characterised by their shape

Abstract

The subsea wellhead system includes a wellhead, a housing seat disposed and connected to the wellhead, a casing hanger landed and supported by the housing seat, a holddown and sealing assembly disposed in the annulus between the wellhead and casing hanger, a running tool attached to the casing hanger for lowering the casing hanger into the well and for initially actuating the holddown and sealing assembly, and other apparatus for applying hydraulic pressure to further actuate the seal of the holddown and sealing assembly. The housing seat and wellhead are connected by a breech block connection. The housing seat maintains a full 360.degree. circumferential bearing surface with the casing hanger. The holddown and seal assembly includes an upper rotating member threadingly engaging the casing hanger and suspending a lower stationary member. The stationary member includes a Z-shaped portion composed of a plurality of frustoconical metal rings connected together by connector links so as to provide a positive connective link throughout the stationary member. The annular links form grooves for housing resilient elastomeric members where, upon the compression of the Z-shaped portion of the stationary member, the elastomeric members initially sealingly engage the wellhead and casing hanger and then, upon further compression, the annular links deform into metal-to-metal engagement with the wellhead and casing hanger so as to form a metal-to-metal primary seal. The seal is actuated initally by the application of torque through a running tool connected to the casing hanger. The seal is further actuated by the application of hydraulic pressure below the blowout preventer whereby a compression set of the seal is achieved which is greater than the working pressure of the well. The rotating member of the holddown and seal assembly follows the further compression of the seal so as to prevent the release of the compression set upon the removal of the hydraulic pressure.
CA000421586A 1982-02-16 1983-02-15 Subsea wellhead system Expired CA1202885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000487752A CA1271789A (en) 1982-02-16 1985-07-30 Subsea wellhead system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/348,735 US4615544A (en) 1982-02-16 1982-02-16 Subsea wellhead system
US06/350,374 US4488740A (en) 1982-02-19 1982-02-19 Breech block hanger support

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA000487752A Division CA1271789A (en) 1982-02-16 1985-07-30 Subsea wellhead system

Publications (2)

Publication Number Publication Date
CA1202885A true CA1202885A (en) 1986-04-08
CA1271789C CA1271789C (en) 1990-07-17

Family

ID=26995862

Family Applications (2)

Application Number Title Priority Date Filing Date
CA000421586A Expired CA1202885A (en) 1982-02-16 1983-02-15 Subsea wellhead system
CA000421596A Expired CA1206091A (en) 1982-02-16 1983-02-15 Breech block hanger support

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA000421596A Expired CA1206091A (en) 1982-02-16 1983-02-15 Breech block hanger support

Country Status (6)

Country Link
CA (2) CA1202885A (en)
DE (2) DE3305285A1 (en)
FR (2) FR2521634B1 (en)
GB (5) GB2114630B (en)
NL (2) NL8300568A (en)
NO (2) NO160943C (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1255208A (en) * 1985-04-26 1989-06-06 Martin B. Jansen Retrievable packoff
US4842061A (en) * 1988-02-05 1989-06-27 Vetco Gray Inc. Casing hanger packoff with C-shaped metal seal
GB2216965B (en) * 1988-04-08 1992-04-15 Cooper Ind Inc Energisation of sealing assemblies
GB8821982D0 (en) * 1988-09-19 1988-10-19 Cooper Ind Inc Energisation of sealing assemblies
GB8918517D0 (en) * 1989-08-14 1989-09-20 Cameron Iron Works Inc Location of tubular members
US5290126A (en) * 1991-12-13 1994-03-01 Abb Vectogray Inc. Antirotation device for subsea wellheads
EP0592739B1 (en) * 1992-10-16 1997-12-17 Cooper Cameron Corporation Load support ring
US5620052A (en) * 1995-06-07 1997-04-15 Turner; Edwin C. Hanger suspension system
US7163054B2 (en) * 2003-06-23 2007-01-16 Control Flow Inc. Breechblock connectors for use with oil field lines and oil field equipment
US7770649B2 (en) 2004-10-12 2010-08-10 Cameron International Corporation Locking device
US7798231B2 (en) 2006-07-06 2010-09-21 Vetco Gray Inc. Adapter sleeve for wellhead housing
CN103696740A (en) * 2013-12-25 2014-04-02 中国海洋石油总公司 Breechblock-type waterproof conduit joint

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1488597A (en) * 1966-08-02 1967-07-13 Ventura Tool Company Hydraulically actuated casing suspension system
US3421580A (en) * 1966-08-15 1969-01-14 Rockwell Mfg Co Underwater well completion method and apparatus
US3442536A (en) * 1968-05-09 1969-05-06 Rockwell Mfg Co Pipe joint having circumferentially spaced teeth coupling means
US3528686A (en) * 1968-06-24 1970-09-15 Vetco Offshore Ind Inc Rotatable casing hanger apparatus
US3649032A (en) * 1968-11-01 1972-03-14 Vetco Offshore Ind Inc Apparatus for sealing an annular space
US3638725A (en) * 1970-05-15 1972-02-01 Vetco Offshore Ind Inc Direct drive casing hanger apparatus
US3800869A (en) * 1971-01-04 1974-04-02 Rockwell International Corp Underwater well completion method and apparatus
US3971576A (en) * 1971-01-04 1976-07-27 Mcevoy Oilfield Equipment Co. Underwater well completion method and apparatus
US3948545A (en) * 1974-03-11 1976-04-06 Mcevoy Oilfield Equipment Co. Mechanically operated breech block

Also Published As

Publication number Publication date
GB2114630B (en) 1986-07-02
GB8511548D0 (en) 1985-06-12
NO160944B (en) 1989-03-06
GB8303796D0 (en) 1983-03-16
NO160943B (en) 1989-03-06
NL8300568A (en) 1983-09-16
NL8300566A (en) 1983-09-16
FR2521634A1 (en) 1983-08-19
GB8303795D0 (en) 1983-03-16
FR2521635A1 (en) 1983-08-19
GB8511549D0 (en) 1985-06-12
GB2156881B (en) 1986-07-02
CA1206091A (en) 1986-06-17
GB2114631A (en) 1983-08-24
GB2157346B (en) 1986-04-09
GB2159554B (en) 1986-07-02
NO160943C (en) 1989-06-14
NO830502L (en) 1983-08-17
FR2521635B1 (en) 1986-09-19
DE3305285A1 (en) 1983-08-25
GB2159554A (en) 1985-12-04
DE3305310A1 (en) 1983-08-25
NO160944C (en) 1989-06-14
FR2521634B1 (en) 1986-10-17
GB2156881A (en) 1985-10-16
CA1271789C (en) 1990-07-17
GB2157346A (en) 1985-10-23
NO830501L (en) 1983-08-17
GB8511550D0 (en) 1985-06-12
GB2114630A (en) 1983-08-24
GB2114631B (en) 1986-01-02

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Legal Events

Date Code Title Description
MKEX Expiry