GB1421856A - Suspension tool for suspending pipes in a well - Google Patents
Suspension tool for suspending pipes in a wellInfo
- Publication number
- GB1421856A GB1421856A GB646873A GB646873A GB1421856A GB 1421856 A GB1421856 A GB 1421856A GB 646873 A GB646873 A GB 646873A GB 646873 A GB646873 A GB 646873A GB 1421856 A GB1421856 A GB 1421856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- elements
- central axis
- piston
- pipe
- members
- 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
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
Abstract
1421856 Wells &c SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 9 Feb 1973 6468/73 Heading E1F A suspension tool for suspending pipes in a well comprises a housing 2, 3 having a central axis, an axial passage 9 for passing pipes therethrough, wedge-shaped pipe-supporting elements 21 disposed around the central axis, each element being provided with a high-friction surface 22 facing and parallel with the central axis, the elements being slidably arranged on guiding surfaces 23 inclined to the axis, and actuating means 11 for displacing the elements along the guiding surfaces so as to vary the distance of the high-friction surfaces 22 from the central axis whilst maintaining the surfaces 22 parallel to the axis. Coupling means 5 and 7 are provided for attachment of the tool to wellhead equipment. A piston 11 is displaced downwardly or upwardly by the application of pressurised fluid through conduits 17 or 19, respectively, to grip or release a pipe in the passage 9. Alternatively, each element 21 may have an operating piston, or there may be sets of elements each with a piston. The pipe-supporting elements 21 may have resilient members 24 vulcanised or otherwise connected therebetween, and these members can be of various shapes, Figs. 3 to 5 (not shown) and be interconnected on either side of each element via recesses in its front and rear faces, thus forming a seal between the elements 21 and a pipe gripped thereby. The members 24 may be omitted and the elements 21 flexibly connected to the piston 11.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB646873A GB1421856A (en) | 1973-02-09 | 1973-02-09 | Suspension tool for suspending pipes in a well |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB646873A GB1421856A (en) | 1973-02-09 | 1973-02-09 | Suspension tool for suspending pipes in a well |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1421856A true GB1421856A (en) | 1976-01-21 |
Family
ID=9815026
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB646873A Expired GB1421856A (en) | 1973-02-09 | 1973-02-09 | Suspension tool for suspending pipes in a well |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1421856A (en) |
-
1973
- 1973-02-09 GB GB646873A patent/GB1421856A/en not_active Expired
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |