CA1202885A - Subsea wellhead system - Google Patents
Subsea wellhead systemInfo
- 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
Links
- 230000006835 compression Effects 0.000 abstract 5
- 238000007906 compression Methods 0.000 abstract 5
- 239000002184 metal Substances 0.000 abstract 3
- 238000007789 sealing Methods 0.000 abstract 3
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
-
- 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Supports For Pipes And Cables (AREA)
- Lubricants (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
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.
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) | DE3305310A1 (en) |
FR (2) | FR2521635B1 (en) |
GB (5) | GB2114631B (en) |
NL (2) | NL8300566A (en) |
NO (2) | NO160944C (en) |
Families Citing this family (12)
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 |
GB8821982D0 (en) * | 1988-09-19 | 1988-10-19 | Cooper Ind Inc | Energisation of sealing assemblies |
GB2216965B (en) * | 1988-04-08 | 1992-04-15 | 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 |
BRPI0419084B1 (en) | 2004-10-12 | 2015-05-26 | Cameron Int Corp | 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)
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 |
US3971576A (en) * | 1971-01-04 | 1976-07-27 | Mcevoy Oilfield Equipment Co. | Underwater well completion method and apparatus |
US3800869A (en) * | 1971-01-04 | 1974-04-02 | Rockwell International Corp | Underwater well completion method and apparatus |
US3948545A (en) * | 1974-03-11 | 1976-04-06 | Mcevoy Oilfield Equipment Co. | Mechanically operated breech block |
-
1983
- 1983-02-11 GB GB08303796A patent/GB2114631B/en not_active Expired
- 1983-02-11 GB GB08303795A patent/GB2114630B/en not_active Expired
- 1983-02-15 NO NO830502A patent/NO160944C/en unknown
- 1983-02-15 NL NL8300566A patent/NL8300566A/en not_active Application Discontinuation
- 1983-02-15 CA CA000421586A patent/CA1202885A/en not_active Expired
- 1983-02-15 CA CA000421596A patent/CA1206091A/en not_active Expired
- 1983-02-15 NO NO830501A patent/NO160943C/en unknown
- 1983-02-15 NL NL8300568A patent/NL8300568A/en not_active Application Discontinuation
- 1983-02-16 FR FR8302508A patent/FR2521635B1/en not_active Expired
- 1983-02-16 FR FR8302507A patent/FR2521634B1/en not_active Expired
- 1983-02-16 DE DE19833305310 patent/DE3305310A1/en not_active Withdrawn
- 1983-02-16 DE DE19833305285 patent/DE3305285A1/en not_active Withdrawn
-
1985
- 1985-05-07 GB GB08511549A patent/GB2159554B/en not_active Expired
- 1985-05-07 GB GB08511548A patent/GB2156881B/en not_active Expired
- 1985-05-07 GB GB08511550A patent/GB2157346B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA1271789C (en) | 1990-07-17 |
GB2157346A (en) | 1985-10-23 |
GB8303796D0 (en) | 1983-03-16 |
GB8303795D0 (en) | 1983-03-16 |
GB2157346B (en) | 1986-04-09 |
GB2156881A (en) | 1985-10-16 |
FR2521635B1 (en) | 1986-09-19 |
GB2159554B (en) | 1986-07-02 |
NO830501L (en) | 1983-08-17 |
CA1206091A (en) | 1986-06-17 |
DE3305310A1 (en) | 1983-08-25 |
GB2114630A (en) | 1983-08-24 |
GB2159554A (en) | 1985-12-04 |
GB2114630B (en) | 1986-07-02 |
GB8511549D0 (en) | 1985-06-12 |
GB8511550D0 (en) | 1985-06-12 |
FR2521635A1 (en) | 1983-08-19 |
NO830502L (en) | 1983-08-17 |
GB2114631B (en) | 1986-01-02 |
GB8511548D0 (en) | 1985-06-12 |
GB2156881B (en) | 1986-07-02 |
GB2114631A (en) | 1983-08-24 |
DE3305285A1 (en) | 1983-08-25 |
NO160943B (en) | 1989-03-06 |
NL8300568A (en) | 1983-09-16 |
NO160944C (en) | 1989-06-14 |
NO160943C (en) | 1989-06-14 |
NO160944B (en) | 1989-03-06 |
NL8300566A (en) | 1983-09-16 |
FR2521634B1 (en) | 1986-10-17 |
FR2521634A1 (en) | 1983-08-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MKEX | Expiry |