CN105041252A - Internally-lifting safety assembly for pressure-maintaining coring - Google Patents
Internally-lifting safety assembly for pressure-maintaining coring Download PDFInfo
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- CN105041252A CN105041252A CN201510460275.8A CN201510460275A CN105041252A CN 105041252 A CN105041252 A CN 105041252A CN 201510460275 A CN201510460275 A CN 201510460275A CN 105041252 A CN105041252 A CN 105041252A
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Abstract
The invention relates to the technical field of petroleum and natural gas well-drilling coring, in particular to an internally-lifting safety assembly for pressure-maintaining coring. The outer wall of the lower end of a safety male joint of the internally-lifting safety assembly is in threaded connection with a safety female joint while the inner wall of the same is in threaded connection with a piston shaft, a ball seat is arranged on the inner wall of the bottom end of the piston shaft, a piston sleeve is mounted on the outer side of the piston shaft in a sleeving manner, an outer step of the bottom end of the piston shaft and the inner wall of the piston sleeve are sealed, an annular space is formed between the piston shaft and the piston sleeve, the piston sleeve can move up and down along the piston shaft, a pressure relief hole capable of being communicated with the annular space between the piston shaft and the piston sleeve is formed in the side wall of the lower end of the piston shaft, a diversion hole is formed in the side wall of the piston sleeve, and the lower end of the piston sleeve is in threaded connection with an adapter. By the internally-lifting safety assembly, a pressure-maintaining coring inner barrel is enabled to move upwards relative to an outer barrel through a hydraulic internally-lifting function, so that closing of a ball valve is realized. The internally-lifting safety assembly is high in safety, high in resistance to tension and torsion, simple in structure and easy to use in tool assembling and maintaining.
Description
Technical field:
The present invention relates to oil and gas drilling and coring delivery technical field, particularly a kind of coring drilling with keep up pressure safe assembly of interior lifting.
Background technology:
Coring drilling with keep up pressure be a kind of rock core can be made to remain at stratum reset pressure state under coring method.There is a ball valve coring drilling with keep up pressure instrument inner core lower end, and closed the ball valve of inner core lower end by mechanical action, mechanism general is at present employing six side differential attachment.Its positioning action and difficult in maintenance, and when well depth, its tension torsional property is poor, is difficult to the construction demand meeting deep-well.
Summary of the invention:
The technical problem to be solved in the present invention is to provide the safe assembly of the interior lifting of a kind of coring drilling with keep up pressure, the arrangement achieves and by enhanced feature in hydraulic pressure, the relative urceolus of coring drilling with keep up pressure inner core is moved up, thus realize the closedown of ball valve, security performance is high, tension anti-twisting property is strong, structure is simple, and tool assemble and maintenance are easily.Overcome existing coring drilling with keep up pressure tool positioned operation and maintenance difficulty, the deficiency of tension torsional property difference.
The technical solution used in the present invention is: a kind of coring drilling with keep up pressure safe assembly of interior lifting, comprises safe male joint and security master joint, safe male joint lower end outer wall is threaded security master joint, safe male joint lower end inner wall is threaded the axis of the piston, the axis of the piston bottom inwall is provided with ball seat, piston bush is sleeved on outside the axis of the piston, the axis of the piston bottom outer step and piston bush inner wall sealing, annular space is formed between the axis of the piston and piston bush, piston bush can move up and down along the axis of the piston, the axis of the piston lower end sidewall has the relief hole that can be connected with annular space between the axis of the piston and piston bush, piston bush sidewall has tap hole, piston bush lower end is threaded crossover sub, crossover sub lower end is threaded and adjusts major axis and locked by safetied pin.
The invention has the beneficial effects as follows: the present invention makes the relative urceolus of coring drilling with keep up pressure inner core move up by enhanced feature in hydraulic pressure, thus realizes the closedown of ball valve, and security performance is high, tension anti-twisting property is strong, and structure is simple, and tool assemble and maintenance are easily.
Accompanying drawing illustrates:
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Fig. 1 is structural representation of the present invention.
Detailed description of the invention:
As shown in Figure 1, a kind of coring drilling with keep up pressure safe assembly of interior lifting, comprises safe male joint 1 and security master joint 2, safe male joint 1 lower end outer wall is threaded security master joint 2, safe male joint 1 lower end inner wall is threaded the axis of the piston 3, the axis of the piston 3 bottom inwall is provided with ball seat, piston bush 4 is sleeved on outside the axis of the piston 3, the axis of the piston 3 bottom outer step and piston bush 4 inner wall sealing, annular space is formed between the axis of the piston 3 and piston bush 4, piston bush 4 can move up and down along the axis of the piston 3, the axis of the piston 3 lower end sidewall has the relief hole that can be connected with annular space between the axis of the piston 3 and piston bush 4, piston bush 4 sidewall has tap hole, piston bush 4 lower end is threaded crossover sub 5, crossover sub 5 lower end is threaded and adjusts major axis 7 and locked by safetied pin 6.
During use, security master joint 2 connects the urceolus of coring of lower end, adjusts major axis 7 to connect bottom coring inner drum assembly.The present invention in an assembling process, is regulated the gap between inner/outer tube by tune major axis 7, and is locked by safetied pin 6.In drilling process, drilling fluid is flowed in piston bush 4 by the center flow channels of safe male joint 1, the axis of the piston 3, and piston bush 4 has tap hole, drilling fluid is diverted to the circulation realizing drilling fluid outside piston bush 4.After drilling and coring delivery completes, in drilling tool, drop into a steel ball sets on the ball seat of the axis of the piston 3 bottom, drilling fluid is delivered to annular space between the axis of the piston 3 and piston bush 4 by the relief hole on the axis of the piston 3, drilling liquid pressure promotes piston bush 4 and moves up along the axis of the piston 3, inner core assembly is pulled to move relative to urceolus and close pressure keeping ball valve assembly, after moving to assigned address, the tap hole of piston bush 4 aligns with the relief hole of the axis of the piston 3, drilling fluid in the axis of the piston 3 will flow to outside piston bush 4, pressure drop, whole process completes.
The interior hydraulic pressure lift of patent of the present invention, the relative urceolus of coring inner drum moves upward and drives ball valve to close, and drilling tool does not need to carry in advance, reduces dropping of loose crushing rock core, the sand card that simultaneously, lift structure prevents landwaste to cause six sides, dependable performance.
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (1)
1. the coring drilling with keep up pressure safe assembly of interior lifting, comprises safe male joint (1) and security master joint (2), it is characterized in that: safe male joint (1) lower end outer wall is threaded security master joint (2), safe male joint (1) lower end inner wall is threaded the axis of the piston (3), the axis of the piston (3) bottom inwall is provided with ball seat, piston bush (4) is sleeved on the axis of the piston (3) outside, the axis of the piston (3) bottom outer step and piston bush (4) inner wall sealing, annular space is formed between the axis of the piston (3) and piston bush (4), piston bush (4) can move up and down along the axis of the piston (3), the axis of the piston (3) lower end sidewall has the relief hole that can be connected with annular space between the axis of the piston (3) and piston bush (4), piston bush (4) sidewall has tap hole, piston bush (4) lower end is threaded crossover sub (5), crossover sub (5) lower end is threaded and adjusts major axis (7) and locked by safetied pin (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460275.8A CN105041252A (en) | 2015-07-30 | 2015-07-30 | Internally-lifting safety assembly for pressure-maintaining coring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460275.8A CN105041252A (en) | 2015-07-30 | 2015-07-30 | Internally-lifting safety assembly for pressure-maintaining coring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105041252A true CN105041252A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510460275.8A Pending CN105041252A (en) | 2015-07-30 | 2015-07-30 | Internally-lifting safety assembly for pressure-maintaining coring |
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| CN (1) | CN105041252A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952405A (en) * | 2016-06-30 | 2016-09-21 | 中国石油集团西部钻探工程有限公司 | Floating piston device for coring |
| CN106014314A (en) * | 2016-07-05 | 2016-10-12 | 中交第四航务工程勘察设计院有限公司 | Hydraulic rock core lifting device for exploratory boring |
| CN108266148A (en) * | 2018-03-13 | 2018-07-10 | 长江大学 | A kind of coring pressurize short circuit |
| CN106014315B (en) * | 2016-07-18 | 2019-02-01 | 中国石油集团西部钻探工程有限公司 | Hydraulic lock compact form coring apparatus |
| CN110552644A (en) * | 2019-10-05 | 2019-12-10 | 中国石油大学(华东) | In-situ coal rock heat-preservation pressure-maintaining coring device and application method |
| CN113356779A (en) * | 2021-07-14 | 2021-09-07 | 西南石油大学 | Coring device and coring method |
| CN114320197A (en) * | 2022-02-12 | 2022-04-12 | 东北石油大学 | Piston type controllable differential mechanism for fidelity coring device |
| CN115162989A (en) * | 2022-08-22 | 2022-10-11 | 中国地质科学院勘探技术研究所 | Drill lifting type pressure maintaining coring drilling tool |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467867A (en) * | 1982-07-06 | 1984-08-28 | Baker Oil Tools, Inc. | Subterranean well safety valve with reference pressure chamber |
| CN2402798Y (en) * | 1999-12-13 | 2000-10-25 | 胜利石油管理局钻井工艺研究院 | Shape-retaining seal coring tool |
| CN2464928Y (en) * | 2000-08-29 | 2001-12-12 | 辽河石油勘探局工程技术研究院 | Pressured coring tool in soft ground |
| CN2558757Y (en) * | 2002-06-18 | 2003-07-02 | 大庆石油管理局 | Pressure compensator of pressure maintaining seal coring tool |
| CN101037859A (en) * | 2006-03-13 | 2007-09-19 | 中交第三航务工程勘察设计院有限公司 | Double-tubes single-action valve type coring earth borrowing device |
| CN201474639U (en) * | 2009-07-14 | 2010-05-19 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Hydraulic active hermetic core taking tool |
| CN201581839U (en) * | 2009-11-17 | 2010-09-15 | 中国石油集团长城钻探工程有限公司 | Sealed coring tool |
| CN104179469A (en) * | 2014-08-07 | 2014-12-03 | 中国海洋石油总公司 | Active pressure maintaining and coring tool and use method thereof |
-
2015
- 2015-07-30 CN CN201510460275.8A patent/CN105041252A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467867A (en) * | 1982-07-06 | 1984-08-28 | Baker Oil Tools, Inc. | Subterranean well safety valve with reference pressure chamber |
| CN2402798Y (en) * | 1999-12-13 | 2000-10-25 | 胜利石油管理局钻井工艺研究院 | Shape-retaining seal coring tool |
| CN2464928Y (en) * | 2000-08-29 | 2001-12-12 | 辽河石油勘探局工程技术研究院 | Pressured coring tool in soft ground |
| CN2558757Y (en) * | 2002-06-18 | 2003-07-02 | 大庆石油管理局 | Pressure compensator of pressure maintaining seal coring tool |
| CN101037859A (en) * | 2006-03-13 | 2007-09-19 | 中交第三航务工程勘察设计院有限公司 | Double-tubes single-action valve type coring earth borrowing device |
| CN201474639U (en) * | 2009-07-14 | 2010-05-19 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Hydraulic active hermetic core taking tool |
| CN201581839U (en) * | 2009-11-17 | 2010-09-15 | 中国石油集团长城钻探工程有限公司 | Sealed coring tool |
| CN104179469A (en) * | 2014-08-07 | 2014-12-03 | 中国海洋石油总公司 | Active pressure maintaining and coring tool and use method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952405B (en) * | 2016-06-30 | 2018-06-26 | 中国石油集团西部钻探工程有限公司 | It cores and uses float piston device |
| CN105952405A (en) * | 2016-06-30 | 2016-09-21 | 中国石油集团西部钻探工程有限公司 | Floating piston device for coring |
| CN106014314A (en) * | 2016-07-05 | 2016-10-12 | 中交第四航务工程勘察设计院有限公司 | Hydraulic rock core lifting device for exploratory boring |
| CN106014314B (en) * | 2016-07-05 | 2018-11-20 | 中交第四航务工程勘察设计院有限公司 | A kind of drill takes device with hydraulic rock core card |
| CN106014315B (en) * | 2016-07-18 | 2019-02-01 | 中国石油集团西部钻探工程有限公司 | Hydraulic lock compact form coring apparatus |
| CN108266148B (en) * | 2018-03-13 | 2023-08-15 | 长江大学 | Coring pressure-maintaining short circuit |
| CN108266148A (en) * | 2018-03-13 | 2018-07-10 | 长江大学 | A kind of coring pressurize short circuit |
| CN110552644A (en) * | 2019-10-05 | 2019-12-10 | 中国石油大学(华东) | In-situ coal rock heat-preservation pressure-maintaining coring device and application method |
| CN110552644B (en) * | 2019-10-05 | 2024-01-23 | 中国石油大学(华东) | In-situ coal rock heat-preserving pressure-maintaining coring device and application method |
| CN113356779A (en) * | 2021-07-14 | 2021-09-07 | 西南石油大学 | Coring device and coring method |
| CN114320197A (en) * | 2022-02-12 | 2022-04-12 | 东北石油大学 | Piston type controllable differential mechanism for fidelity coring device |
| CN114320197B (en) * | 2022-02-12 | 2023-08-25 | 东北石油大学 | Piston type controllable differential mechanism for fidelity coring device |
| CN115162989A (en) * | 2022-08-22 | 2022-10-11 | 中国地质科学院勘探技术研究所 | Drill lifting type pressure maintaining coring drilling tool |
| CN115162989B (en) * | 2022-08-22 | 2023-10-20 | 中国地质科学院勘探技术研究所 | Lifting drilling type pressure maintaining coring drilling tool |
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