GB1230060A - - Google Patents
Info
- Publication number
- GB1230060A GB1230060A GB1230060DA GB1230060A GB 1230060 A GB1230060 A GB 1230060A GB 1230060D A GB1230060D A GB 1230060DA GB 1230060 A GB1230060 A GB 1230060A
- Authority
- GB
- United Kingdom
- Prior art keywords
- housing
- mandrel
- liquid
- chamber
- bore
- 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
- 239000007788 liquid Substances 0.000 abstract 3
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000035939 shock Effects 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Earth Drilling (AREA)
Abstract
1,230,060. Boring earth &c. BOSSCO, Inc. 25 March, 1970, No. 14593/70. Heading E1F. [Also in Division F2] A shock absorber for a drill string comprises: a housing 5; a mandrel 7 axially slidable in the housing, adapted to be connected to a drill bit 4, and carrying seals 19, 28 co-operating with the housing to form a closed chamber within the housing; and a check valve assembly 12 within the chamber. The chamber is filled with liquid and has upper and lower parts connected by a bore 36. The assembly 12 is located below the bore and has ports (not shown) with adjustable chokes for passage of liquid in either direction and ports 37 with check valves 40 permitting downward flow of liquid only. Relative rotation between mandrel and housing is prevented by ball bearings 52 engaging a groove 53 in the mandrel, teeth 16, 17 also engaging when the mandrel is fully retracted to couple mandrel and housing. The seals each comprise an elastic sleeve 20 having peripheral slits 27 and held in place by thrust rings 30 of hinged two-part construction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1459370 | 1970-03-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1230060A true GB1230060A (en) | 1971-04-28 |
Family
ID=10044040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1230060D Expired GB1230060A (en) | 1970-03-25 | 1970-03-25 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1230060A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0489527A1 (en) * | 1990-12-03 | 1992-06-10 | Halliburton Company | Downhole hydraulic shock absorber |
| CN102828700A (en) * | 2012-08-01 | 2012-12-19 | 中国石油天然气集团公司 | Ball type friction and torsion reducing connector |
| CN111021966A (en) * | 2019-12-10 | 2020-04-17 | 贵州高峰石油机械股份有限公司 | Settlement compensation method and settlement compensator for offshore drilling |
| CN117738596A (en) * | 2024-02-19 | 2024-03-22 | 成都之恒油气技术开发有限公司 | Underground vibration buffer type drilling tool |
-
1970
- 1970-03-25 GB GB1230060D patent/GB1230060A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0489527A1 (en) * | 1990-12-03 | 1992-06-10 | Halliburton Company | Downhole hydraulic shock absorber |
| CN102828700A (en) * | 2012-08-01 | 2012-12-19 | 中国石油天然气集团公司 | Ball type friction and torsion reducing connector |
| CN111021966A (en) * | 2019-12-10 | 2020-04-17 | 贵州高峰石油机械股份有限公司 | Settlement compensation method and settlement compensator for offshore drilling |
| CN117738596A (en) * | 2024-02-19 | 2024-03-22 | 成都之恒油气技术开发有限公司 | Underground vibration buffer type drilling tool |
| CN117738596B (en) * | 2024-02-19 | 2024-04-16 | 成都之恒油气技术开发有限公司 | Underground vibration buffer type drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLE | Entries relating assignments, transmissions, licences in the register of patents | ||
| PCNP | Patent ceased through non-payment of renewal fee |