GB805810A - Well drilling equipment - Google Patents
Well drilling equipmentInfo
- Publication number
- GB805810A GB805810A GB9648/57A GB964857A GB805810A GB 805810 A GB805810 A GB 805810A GB 9648/57 A GB9648/57 A GB 9648/57A GB 964857 A GB964857 A GB 964857A GB 805810 A GB805810 A GB 805810A
- Authority
- GB
- United Kingdom
- Prior art keywords
- string
- rams
- ram
- bore
- blade
- 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
- 238000005553 drilling Methods 0.000 title 1
- 238000010008 shearing 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
- E21B33/061—Ram-type blow-out preventers, e.g. with pivoting rams
- E21B33/062—Ram-type blow-out preventers, e.g. with pivoting rams with sliding rams
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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Shearing Machines (AREA)
Abstract
805,810. Shearing. SHAFFER TOOL WORKS. March 25, 1957 [July 23, 1956], No. 9648/57. Class 83 (4). [Also in Group XXI] In a well fitting comprising a body 10 having a bore 12 for the well string, and ram containing chambers 15 normal to the bore, each of the rams 20, 22, which are semi-circular in plan, carries at its straight edge a shear blade which coacts with the blade on the other ram to sever the well string when the rams close the bore. Each of the rams comprises a holder 26 connected to hydraulically-operated pistons 31, a block 34, and a rubber seal bonded to the block and comprising a semi-circular part 38 having its ends connected to a straight part 39. The ram 20 carries the shear blade 46 and is formed with a recess 50 for reception of the shear blade 63. The blade 63 is mounted on the ram 22 and has a cutting edge 67 projecting from, and at an angle to, the straight edge of the ram. When the edges of the rams are together and the string is sheared, the tension in the string moves the upper part of the string from the rams, and the rubber parts 39 abut to seal off the lower part of the string. The fitting has two further chambers 14 which house rams adapted to close around a string in the bore 12.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US805810XA | 1956-07-23 | 1956-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB805810A true GB805810A (en) | 1958-12-10 |
Family
ID=22158287
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9648/57A Expired GB805810A (en) | 1956-07-23 | 1957-03-25 | Well drilling equipment |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB805810A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2736129A1 (en) * | 1976-08-23 | 1978-03-02 | Rucker Co | ESCAPE PREVENTIONER WITH SHEAR JAWS TO SHUT OFF DRILLING SOURCES |
-
1957
- 1957-03-25 GB GB9648/57A patent/GB805810A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2736129A1 (en) * | 1976-08-23 | 1978-03-02 | Rucker Co | ESCAPE PREVENTIONER WITH SHEAR JAWS TO SHUT OFF DRILLING SOURCES |
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