GB693379A - Improvements relating to pressure core takers - Google Patents
Improvements relating to pressure core takersInfo
- Publication number
- GB693379A GB693379A GB2546050A GB2546050A GB693379A GB 693379 A GB693379 A GB 693379A GB 2546050 A GB2546050 A GB 2546050A GB 2546050 A GB2546050 A GB 2546050A GB 693379 A GB693379 A GB 693379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- barrel
- core
- bore
- pressure
- chamber
- 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
- 238000005086 pumping Methods 0.000 abstract 2
- 238000005553 drilling Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 125000006850 spacer group Chemical group 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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
- E21B25/08—Coating, freezing, consolidating cores; Recovering uncontaminated cores or cores at formation pressure
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)
- Drilling And Boring (AREA)
Abstract
693,379. Core drills. ANGLO-IRANIAN OIL CO., Ltd., and OTWAY, C. W. Oct. 2, 1951 [Oct. 19, 1950], No. 25460/50. Class 85 A core-taker, so designed that the captured core is brought to the surface at the same pressure as occurred at the bottom of the bore, comprises a core bit carrying outer barrel 10 secured to the drill rod, and fixedly positioned therein is a pressure retaining barrel 11 provided at the lower end thereof with a spring- biased flap valve 24 that can close the bore of said barrel 4 but which is held open by a core barrel 12 slidably located within said barrel. In the core drilling position, the core barrel 12 is held stationary, against the action or a spring 33, with respect to the barrel 11 by spring biased clawed arms 21 engaging a plate 28 mounted on an extension 26 of the barrel 12. When sufficient core has been drilled, the string is raised and the catchers 62 engage the core as the barrel 11 rises with respect to the barrel 12 as the latter is held stationary by the core so that the arms 21 on the barrel 11 disengage from the plate 28 of the barrel 12 with the result that the spring 33 now forces the barrel 12 upwards into the barrel 11 past the flap valve 34 which closes to retain said barrel 12 in a chamber at the pressure ocurring at the bottom of the bore, the barrel 11 being sealed at the upper portion by mutual engagement of shoulders 46, 45 on barrels 11, 12 on a packer ring 47. The three concentrically disposed barrels are now withdrawn to the top of the bore. If the core is soft so that the catchers do not lock therein, the arms 21 can be tripped by dropping a heavy weight down the bore on to the end of the core barrel to force it downwards, relative to the barrel 11, or the rate of pumping is increased, so that differential pressure occurs on adjustable flow resisting baffle plates 55, 56 secured to the upper end of the barrel 12. To maintain the pressure in the barrel 12 aproximately constant to that existing at the bottom of the bore during withdrawal of the tool compensating means are provided and consist of a chamber 54 leading to the core-receiving chamber of the barrel 12, the chamber 54 having therein a piston 48.' Before lowering the tool into the bore the chamber 54 is pressurized through needle valves 53, 52 to a pressure approximately equal to that existing at the bottom of the bore and the valve 53 closed. On the tool being brought to the surface the bit is removed from the drill barrel and spacer member 19 replaced by a plug and pump and the pressure in the core barrel maintained by pumping fluid past valve 34, whilst the pressure in the compensating chamber is reduced to atmospheric so that portions 11c and 12d can be removed to allow opening of the valve 51 and the reduction of pressure within the core barrel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2546050A GB693379A (en) | 1950-10-19 | 1950-10-19 | Improvements relating to pressure core takers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2546050A GB693379A (en) | 1950-10-19 | 1950-10-19 | Improvements relating to pressure core takers |
Publications (1)
Publication Number | Publication Date |
---|---|
GB693379A true GB693379A (en) | 1953-07-01 |
Family
ID=10228029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2546050A Expired GB693379A (en) | 1950-10-19 | 1950-10-19 | Improvements relating to pressure core takers |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB693379A (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2107210A2 (en) * | 2008-04-04 | 2009-10-07 | Corpro Systems Limited | Valve, core sampling apparatus and method |
CN107514240A (en) * | 2017-10-13 | 2017-12-26 | 四川大学 | A kind of high stability pressurize coring device automatically controlled |
CN108266148A (en) * | 2018-03-13 | 2018-07-10 | 长江大学 | A kind of coring pressurize short circuit |
CN108999583A (en) * | 2018-08-13 | 2018-12-14 | 四川大学 | Pressure maintaining cylinder top seal structure with explosion prevention function |
CN109458147A (en) * | 2018-11-08 | 2019-03-12 | 深圳大学 | Coring device |
CN109505549A (en) * | 2018-11-08 | 2019-03-22 | 深圳大学 | Core drilling rig control mechanism |
CN110748312A (en) * | 2019-11-26 | 2020-02-04 | 深圳大学 | Active pressure supplementing structure and method for coring device with motor for pressurization |
CN110847856A (en) * | 2019-11-26 | 2020-02-28 | 四川大学 | Flap valve structure of pressure maintaining coring device |
CN111502581A (en) * | 2020-04-27 | 2020-08-07 | 深圳大学 | Dry drill slag-dragging operation device and use method thereof |
CN111749634A (en) * | 2020-07-30 | 2020-10-09 | 中国石油大学(华东) | Gas-liquid double-pressure constant-pressure compensation device |
CN114636580A (en) * | 2022-03-14 | 2022-06-17 | 赵丹 | A reconnaissance device for geology ground situation |
CN116752919A (en) * | 2023-08-14 | 2023-09-15 | 山东省地质矿产勘查开发局第三地质大队(山东省第三地质矿产勘查院、山东省海洋地质勘查院) | Rock and soil core drill bit capable of stably coring |
CN117432367A (en) * | 2023-12-18 | 2024-01-23 | 中国石油集团渤海钻探工程有限公司 | Collision pressure reducing type liner cementing rubber plug system |
-
1950
- 1950-10-19 GB GB2546050A patent/GB693379A/en not_active Expired
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2107210A2 (en) * | 2008-04-04 | 2009-10-07 | Corpro Systems Limited | Valve, core sampling apparatus and method |
EP2107210A3 (en) * | 2008-04-04 | 2012-03-28 | Corpro Systems Limited | Valve, core sampling apparatus and method |
CN107514240A (en) * | 2017-10-13 | 2017-12-26 | 四川大学 | A kind of high stability pressurize coring device automatically controlled |
CN107514240B (en) * | 2017-10-13 | 2023-10-17 | 四川大学 | Automatic high stability pressurize coring device of control |
CN108266148A (en) * | 2018-03-13 | 2018-07-10 | 长江大学 | A kind of coring pressurize short circuit |
CN108266148B (en) * | 2018-03-13 | 2023-08-15 | 长江大学 | Coring pressure-maintaining short circuit |
CN108999583A (en) * | 2018-08-13 | 2018-12-14 | 四川大学 | Pressure maintaining cylinder top seal structure with explosion prevention function |
CN109505549A (en) * | 2018-11-08 | 2019-03-22 | 深圳大学 | Core drilling rig control mechanism |
CN109458147A (en) * | 2018-11-08 | 2019-03-12 | 深圳大学 | Coring device |
CN109505549B (en) * | 2018-11-08 | 2023-10-27 | 深圳大学 | Core drilling machine control mechanism |
CN110748312A (en) * | 2019-11-26 | 2020-02-04 | 深圳大学 | Active pressure supplementing structure and method for coring device with motor for pressurization |
CN110847856A (en) * | 2019-11-26 | 2020-02-28 | 四川大学 | Flap valve structure of pressure maintaining coring device |
CN110847856B (en) * | 2019-11-26 | 2024-04-12 | 四川大学 | Flap valve structure of pressure maintaining corer |
CN110748312B (en) * | 2019-11-26 | 2024-01-16 | 深圳大学 | Active pressure compensating structure and method for corer with motor pressurization |
CN111502581A (en) * | 2020-04-27 | 2020-08-07 | 深圳大学 | Dry drill slag-dragging operation device and use method thereof |
CN111502581B (en) * | 2020-04-27 | 2023-09-01 | 深圳大学 | Dry drilling and slag dragging operation device and use method thereof |
CN111749634A (en) * | 2020-07-30 | 2020-10-09 | 中国石油大学(华东) | Gas-liquid double-pressure constant-pressure compensation device |
CN114636580A (en) * | 2022-03-14 | 2022-06-17 | 赵丹 | A reconnaissance device for geology ground situation |
CN116752919B (en) * | 2023-08-14 | 2023-10-13 | 山东省地质矿产勘查开发局第三地质大队(山东省第三地质矿产勘查院、山东省海洋地质勘查院) | Rock and soil core drill bit capable of stably coring |
CN116752919A (en) * | 2023-08-14 | 2023-09-15 | 山东省地质矿产勘查开发局第三地质大队(山东省第三地质矿产勘查院、山东省海洋地质勘查院) | Rock and soil core drill bit capable of stably coring |
CN117432367A (en) * | 2023-12-18 | 2024-01-23 | 中国石油集团渤海钻探工程有限公司 | Collision pressure reducing type liner cementing rubber plug system |
CN117432367B (en) * | 2023-12-18 | 2024-02-23 | 中国石油集团渤海钻探工程有限公司 | Collision pressure reducing type liner cementing rubber plug system |
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