CN201474639U - Hydraulic active hermetic core taking tool - Google Patents

Hydraulic active hermetic core taking tool Download PDF

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Publication number
CN201474639U
CN201474639U CN2009201661364U CN200920166136U CN201474639U CN 201474639 U CN201474639 U CN 201474639U CN 2009201661364 U CN2009201661364 U CN 2009201661364U CN 200920166136 U CN200920166136 U CN 200920166136U CN 201474639 U CN201474639 U CN 201474639U
Authority
CN
China
Prior art keywords
core
tap
urceolus
connection
floating piston
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 - Lifetime
Application number
CN2009201661364U
Other languages
Chinese (zh)
Inventor
王新东
易贵华
陈森强
陈勇
康克利
袁野
方明
王平现
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karamay Drilling Technology Institute of CNPC Western Drilling Engineering Co Ltd
Original Assignee
Karamay Drilling Technology Institute of CNPC Western Drilling Engineering Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Karamay Drilling Technology Institute of CNPC Western Drilling Engineering Co Ltd filed Critical Karamay Drilling Technology Institute of CNPC Western Drilling Engineering Co Ltd
Priority to CN2009201661364U priority Critical patent/CN201474639U/en
Application granted granted Critical
Publication of CN201474639U publication Critical patent/CN201474639U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a hydraulic active hermetic core taking tool used for oil and gas drilling. An upper connector (1), a bearing base (4), an outer cylinder (13), an outer cylinder short circuit (15) and a core taking driller (16) are orderly threaded to each other. An inner cylinder (14) is disposed in the outer cylinder (13) with the lower end thereof threaded to a core grasper and the upper end thereof connected with a switching connector (12). A spring (10) is arranged in the hollow cavity formed by the inner surface of a spring sleeve (11), a baffle ring (9) and the outer surface of the switching connector (12). The upper end of a spring sleeve (11) is connected with a branch connector (6). The bearing base (4) is provided with an inner step at the step position of the branch connector (6). A bearing (5) is arranged in the hollow cavity formed by the bearing base (4), the branch connector (6) and a baffle block (3). The branch connector (6) is of a hollow structure, with the front and back ends forming a lug and the middle part being a long and thin tube. The utility model has compact structure and can efficiently promote the core grasping reliability of the grasper.

Description

The active sealing core drilling instrument of a kind of hydraulic pressure
Technical field
The utility model relates to the coring tool that oil/gas drilling is used, and the active sealing core drilling instrument of particularly a kind of hydraulic pressure belongs to the downhole tool class.
Background technology
Sealing core drilling is the important flow chart of oil, gas drilling engineering.The great majority of oil drilling coring tool use at present belong to the self-locking coring tool, this type of coring tool is applicable to the rock stratum that the rock core moulding is better, the core surface friction factor is bigger, but for water sensitivity mudstone stratum, fracture development stratum, or under the situation such as core diameter is less, core grabber is difficult to catch rock core reliably by self-locking.
Summary of the invention
The active sealing core drilling instrument of a kind of hydraulic pressure that the utility model provides can improve the reliability that coring tool is grabbed the heart effectively.
For achieving the above object, the technical solution adopted in the utility model is: mainly by top connection, bearing support, bearing, tap, floating piston, urceolus, inner core, urceolus short circuit, core bit with grab center device and form, top connection, bearing support, urceolus, urceolus short circuit, core bit are successively to be threaded; Inner core is positioned at urceolus, center device is grabbed in its lower end to be threaded, and the upper end connects crossover sub, the crossover sub appearance is step-like, its front end connects baffle ring, spring housing is enclosed within on the leave from office terrace of crossover sub, and there is interior step the spring housing lower end, the built-in spring of cavity that spring housing inner surface, baffle ring and crossover sub external surface form; The spring housing upper end connects tap, and tap middle part radial equipartition has at least four branch openings, and its front end appearance is step-like; There is interior step the top connection lower end, and block is enclosed within the tap front end, and is limit by step in the top connection lower end; Bearing support should have interior step mutually in tap step position, at the cavity built-in bearing of bearing support, tap and block formation; Floating piston is a hollow structure, and its front-end and back-end form projection, and the middle part is an elongated tubular, and front end projection radial equipartition has at least one fluid course, and for reducing the floating piston quality, projection inside, its rear end is emptied.
The floating piston upper end is level and smooth, design jug, convenient on-the-spot installation and removal.
The check ring design has two blind holes, ease of assembly.
The beneficial effects of the utility model are: compact conformation, convenient disassembly can be realized self-locking, reliably grabs the heart.
Description of drawings
Fig. 1 the utility model structural representation.
Specific embodiments
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
Below in conjunction with accompanying drawing the utility model is described in further details.
The utility model is mainly by top connection 1, bearing support 4, bearing 5, tap 6, floating piston 7, urceolus 13, inner core 14, urceolus short circuit 15, core bit 16 with grab center device and form, and top connection 1, bearing support 4, urceolus 13, urceolus short circuit 15, core bit 16 are successively to be threaded; Inner core 14 is positioned at urceolus 13, center device is grabbed in its lower end to be threaded, and the upper end connects crossover sub 12, crossover sub 12 appearances are step-like, its front end connects baffle ring 9, spring housing 11 is enclosed within on the leave from office terrace of crossover sub 12, and there is interior step spring housing 11 lower ends, the built-in spring 10 of cavity that spring housing 11 inner surfaces, baffle ring 9 and crossover sub 12 external surfaces form; Spring housing 11 upper ends connect tap 6, and tap 6 middle part radial equipartitions have at least four branch openings, and its front end appearance is step-like; There is interior step top connection 1 lower end, and block 3 is enclosed within tap 6 front ends, and is limit by step in top connection 1 lower end; Bearing support 4 should have interior step mutually in tap 6 step positions, at the cavity built-in bearing 5 of bearing support 4, tap 6 and block 3 formation; Floating piston 6 is a hollow structure, and its front-end and back-end form projection, and the middle part is an elongated tubular, and front end projection radial equipartition has at least one fluid course, and for reducing floating piston 6 quality, projection inside, its rear end is emptied.
Can be according to actual needs, to the active sealing core drilling instrument of above-mentioned a kind of hydraulic pressure further optimization and/or improvements:
Be convenient on-the-spot installation and removal, floating piston 6 upper ends design jug and end face are level and smooth.
Be ease of assembly, check ring 8 designs have two blind holes.
Tap 6 tap holes commonly used are six or eight.
The utility model operating principle is: operate by general sealing core drilling mode, carry drilling tool on behind the mill heart, cut as nothing that the heart shows or whether uncertain core grabber catches rock core, but turn on pump, after pump pressure is elevated to design load (can start the compression spring) to promote inner core 14 descending, inner core 14 promotes to grab the thrust ring of center device, thrust ring contacts with the pawl cover under the effect of following thrust, open wedge steel loop on the thrust ring is undergauge under the effect of pawl cover inner conical surface, thrust ring is descending, and then promote the descending undergauge of core grabber, can improve the reliability of catching rock core.

Claims (3)

1. active sealing core drilling instrument of hydraulic pressure, mainly by top connection (1), bearing support (4), bearing (5), tap (6), floating piston (7), urceolus (13), inner core (14), urceolus short circuit (15), core bit (16) with grab center device and form, it is characterized in that: top connection (1), bearing support (4), urceolus (13), urceolus short circuit (15), core bit (16) are successively to be threaded; Inner core (14) is positioned at urceolus (13), center device is grabbed in its lower end to be threaded, and the upper end connects crossover sub (12), crossover sub (12) appearance is step-like, its front end connects baffle ring (9), spring housing (11) is enclosed within on the leave from office terrace of crossover sub (12), and there is interior step spring housing (11) lower end, the built-in spring of cavity (10) that spring housing (11) inner surface, baffle ring (9) and crossover sub (12) external surface form; Spring housing (11) upper end connects tap (6), and tap (6) middle part radial equipartition has at least four branch openings, and its front end appearance is step-like; There is interior step top connection (1) lower end, and block (3) is enclosed within tap (6) front end, and is limit by step in top connection (1) lower end; Bearing support (4) should have interior step mutually in tap (6) step position, at the cavity built-in bearing (5) of bearing support (4), tap (6) and block (3) formation; Floating piston (6) is a hollow structure, and its front-end and back-end form projection, and the middle part is an elongated tubular, and front end projection radial equipartition has at least one fluid course, and for reducing floating piston (6) quality, projection inside, its rear end is emptied.
2. the active sealing core drilling instrument of a kind of hydraulic pressure according to claim 1 is characterized in that: floating piston (6) upper end is level and smooth, design jug, convenient on-the-spot installation and removal.
3. the active sealing core drilling instrument of a kind of hydraulic pressure according to claim 1 is characterized in that: check ring (8) design has two blind holes, ease of assembly.
CN2009201661364U 2009-07-14 2009-07-14 Hydraulic active hermetic core taking tool Expired - Lifetime CN201474639U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201661364U CN201474639U (en) 2009-07-14 2009-07-14 Hydraulic active hermetic core taking tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201661364U CN201474639U (en) 2009-07-14 2009-07-14 Hydraulic active hermetic core taking tool

Publications (1)

Publication Number Publication Date
CN201474639U true CN201474639U (en) 2010-05-19

Family

ID=42410887

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009201661364U Expired - Lifetime CN201474639U (en) 2009-07-14 2009-07-14 Hydraulic active hermetic core taking tool

Country Status (1)

Country Link
CN (1) CN201474639U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948794A (en) * 2015-07-15 2015-09-30 陈波 Flow-limiting valve for long-distance petroleum and natural gas pipeline
CN105041252A (en) * 2015-07-30 2015-11-11 中国石油集团长城钻探工程有限公司 Internally-lifting safety assembly for pressure-maintaining coring
CN105672925A (en) * 2016-02-02 2016-06-15 中煤科工集团西安研究院有限公司 Sealed sampling device for gas sample
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104948794A (en) * 2015-07-15 2015-09-30 陈波 Flow-limiting valve for long-distance petroleum and natural gas pipeline
CN105041252A (en) * 2015-07-30 2015-11-11 中国石油集团长城钻探工程有限公司 Internally-lifting safety assembly for pressure-maintaining coring
CN105672925A (en) * 2016-02-02 2016-06-15 中煤科工集团西安研究院有限公司 Sealed sampling device for gas sample
CN105672925B (en) * 2016-02-02 2018-07-13 中煤科工集团西安研究院有限公司 Gas sample closed sampling device
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

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C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20100519

CX01 Expiry of patent term