GB361961A - Jar mechanism for use in well drilling operations - Google Patents
Jar mechanism for use in well drilling operationsInfo
- Publication number
- GB361961A GB361961A GB2558630A GB2558630A GB361961A GB 361961 A GB361961 A GB 361961A GB 2558630 A GB2558630 A GB 2558630A GB 2558630 A GB2558630 A GB 2558630A GB 361961 A GB361961 A GB 361961A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hammer
- latches
- anvil
- ports
- casing
- 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
- 239000012530 fluid Substances 0.000 abstract 3
- 241000124033 Salix Species 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/107—Fishing for or freeing objects in boreholes or wells using impact means for releasing stuck parts, e.g. jars
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
361,961. Borehole apparatus. WIGLE, W. B., 1207, North Willow Street, Compton, and TRAUSE, E. A., 3207, West 21st Street, Los Angeles, both in California, U.S.A. Aug. 27, 1930, No. 25586. [Class 85.] A jar for use in welldrilling operations comprises a casing 5 provided at its upper end with an anvil 6 with a polygonal bore slidably engaging the polygonal stem 7 of a hammer member H secured to the drill string, latches 22 being pivoted to the hammer member; on forcing down the latter, the latches ride over surface 29 of a member 28 pressed by a spring 32, and are thus forced into engagement with slots 26 in the casing and held by the member 28. An upper tubular member 27 o:n the member 28 slides in the bore of the hammer member, while a lower tubular member 35 has ports 38 which are closed when the parts are in locked relation. The member 35 has a ball check valve allowing passage of fluid when the apparatus is lowered into a well. In use, when the parts are locked as in Fig. 3, a pull is applied to the drill string and fluid pressure is applied through the latter to depress the member 28 and release the latches, the hammer then striking the anvil while the fluid passes out through ports 38.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2558630A GB361961A (en) | 1930-08-27 | 1930-08-27 | Jar mechanism for use in well drilling operations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2558630A GB361961A (en) | 1930-08-27 | 1930-08-27 | Jar mechanism for use in well drilling operations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB361961A true GB361961A (en) | 1931-11-27 |
Family
ID=10230072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2558630A Expired GB361961A (en) | 1930-08-27 | 1930-08-27 | Jar mechanism for use in well drilling operations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB361961A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3513123C1 (en) * | 1985-04-12 | 1986-08-14 | Norton Christensen, Inc., Salt Lake City, Utah | Mechanical guillotine |
-
1930
- 1930-08-27 GB GB2558630A patent/GB361961A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3513123C1 (en) * | 1985-04-12 | 1986-08-14 | Norton Christensen, Inc., Salt Lake City, Utah | Mechanical guillotine |
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