GB1439016A - Blowout preventers - Google Patents
Blowout preventersInfo
- Publication number
- GB1439016A GB1439016A GB3408673A GB3408673A GB1439016A GB 1439016 A GB1439016 A GB 1439016A GB 3408673 A GB3408673 A GB 3408673A GB 3408673 A GB3408673 A GB 3408673A GB 1439016 A GB1439016 A GB 1439016A
- Authority
- GB
- United Kingdom
- Prior art keywords
- segments
- seal
- carrier
- seals
- rams
- 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
- 238000001125 extrusion Methods 0.000 abstract 4
- JZUFKLXOESDKRF-UHFFFAOYSA-N Chlorothiazide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC2=C1NCNS2(=O)=O JZUFKLXOESDKRF-UHFFFAOYSA-N 0.000 abstract 1
- 239000000969 carrier Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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)
- Closures For Containers (AREA)
Abstract
1439016 Wells &c HYDRIL CO 17 July 1973 34086/73 Heading E1F In a blowout preventer comprising a housing 10 and rams R, the rams carry yieldable seals 30 and anti-extrusion means 31 preventing upward extrusion of the material of the seals when the seals are in sealing position. A ram includes a carrier 20, a top plate 24 connected to the carrier by cap screws 26, a yieldable member 21 between the plate and carrier, a base plate 25 having a projection 25c engaging the carrier, and replaceable means including a seal 30 and the means 31. The means 31 comprises segments 35 moulded to the seal and segments 40 each overlapping a pair of segments 35, the segments 40 being connected to be moved by the segments 35. As the rams are brought together to seal about a pipe P the top and base plates first engage and further movement of the carriers forces the seal and the inner ends of the segments into engagement with the pipe. The segments may be designed so that the ram acts as a "blind ram". A lower anti-extrusion means 32 may be fitted, the anti extrusion means being effective when a non circular member such as a kelly is engaged, or when the pipe is engaged at a joint.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4308673A GB1433907A (en) | 1972-09-16 | 1973-09-13 | Method of preparing a glass-forming batch |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1439016A true GB1439016A (en) | 1976-06-09 |
Family
ID=10427259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3408673A Expired GB1439016A (en) | 1973-09-13 | 1973-07-17 | Blowout preventers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1439016A (en) |
-
1973
- 1973-07-17 GB GB3408673A patent/GB1439016A/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 |