CN103334715A - Casing valve for use in unbalanced drilling - Google Patents
Casing valve for use in unbalanced drilling Download PDFInfo
- Publication number
- CN103334715A CN103334715A CN2013102417965A CN201310241796A CN103334715A CN 103334715 A CN103334715 A CN 103334715A CN 2013102417965 A CN2013102417965 A CN 2013102417965A CN 201310241796 A CN201310241796 A CN 201310241796A CN 103334715 A CN103334715 A CN 103334715A
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- casing valve
- casing
- barrel
- valve body
- urceolus
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Abstract
The invention relates to the technical field of unbalanced drilling, in particular to a casing valve for use in unbalanced drilling. In the casing valve, a lower transition joint, a casing valve outer barrel I, a casing valve outer barrel II, a frameless motor and an upper transition joint are connected from bottom to top in sequence; the lower end of a rotor of the frameless motor is connected with a spline connecting barrel; an inner spline at the lower end of the spline connecting barrel is matched with an outer spline of a piston barrel; the piston barrel is arranged in the casing valve outer barrel II, and is in threaded connection with the casing valve outer barrel II; the piston barrel is matched with a casing valve body; and the casing valve body is arranged in the casing valve outer barrel I. Due to the adoption of the casing valve, an underground tool for unlocking a locking device is not required after drilling, the valve body can be locked in an open state permanently without any locking device, and an underground unbalanced state is realized in a drilling process; and the casing valve is easy to operate, and is safe and reliable.
Description
Technical field:
The present invention relates to a kind of under-balanced drilling technology field, particularly a kind of under balance pressure drilling casing valve.
Background technology:
Implement the overall process under-balance drilling technology and mainly use the down-hole pressure packing device, present technology all is that the core of camcylinder makes up by a valve that is connected on the protective casing, valve body to open with closing be to give valve body by the hydraulic line of control connection on the ground hydraulic device with transmission of power, reach make a trip process isolation and connection pit shaft, realize the purpose that not kill-job pulls out of hole.And after completion, the valve body of pressure packing device need be locked in opening, and adopting next time again to bore, and be lowered to the fluid pressure type bloat tool, the mobile locking tube that is preset on the pressure packing device reaches the purpose that locks valve body.This class technology not only needs many next times to bore, and can not reach after the completions such as bore hole or screen casing the under-balanced state of trip-out process behind the locking valve body, and is also higher to the accuracy requirement of operation, has certain potential safety hazard.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of under balance pressure drilling casing valve, this device has been realized need not being lowered to be used to the downhole tool of opening locking device after the completion again, and can realize namely that without any need for locking device the valve body permanent locking is in opening, realize boring the interior under-balanced state of well of completion process, simple to operate, safe and reliable.Overcome the downhole tool that needs to be lowered to again after the existing completion be used to opening locking device, be difficult to realize to bore the deficiency of under-balanced state in the well of completion process simultaneously.
The technical solution used in the present invention is: a kind of under balance pressure drilling casing valve comprises bottom transit joint, casing valve urceolus I, casing valve urceolus II and top transit joint; Bottom transit joint, casing valve urceolus I, casing valve urceolus II, no frame motor, top transit joint connect from bottom to up in turn, the rotor lower end of no frame motor is connected with the spline connecting cylinder, the internal spline of spline connecting cylinder lower end matches with the external splines of piston cylinder, piston cylinder places in the casing valve urceolus II and with casing valve urceolus II and is threaded, piston cylinder matches with the sleeve pipe valve body, and the sleeve pipe valve body is installed in the casing valve urceolus I.
The invention has the beneficial effects as follows: the present invention is owing to adopted no frame motor and spline connecting cylinder, thereby has a function that need not be lowered to again after the completion be used to the downhole tool of opening locking device, and can realize namely that without any need for locking device the valve body permanent locking is in opening, realize boring the interior under-balanced state of well of completion process, built-in no frame motor does not influence the latus rectum size of valve body, simple to operate, safe and reliable.
Description of drawings:
The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
Fig. 1 is structural representation of the present invention.
The specific embodiment:
As shown in Figure 1, a kind of under balance pressure drilling casing valve comprises bottom transit joint 1, casing valve urceolus I 2, casing valve urceolus II 5 and top transit joint 8; Bottom transit joint 1, casing valve urceolus I 2, casing valve urceolus II 5, no frame motor 7, top transit joint 8 connect from bottom to up in turn, the rotor lower end of no frame motor 7 is connected with spline connecting cylinder 6, the internal spline of spline connecting cylinder 6 lower ends matches with the external splines of piston cylinder 4, piston cylinder 4 places in the casing valve urceolus II 5 and with casing valve urceolus II 5 and is threaded, piston cylinder 4 matches with sleeve pipe valve body 3, and sleeve pipe valve body 3 is installed in the casing valve urceolus I 2.
When the present invention works, the rotor of no frame motor 7 drives 6 rotations of spline connecting cylinder, spline connecting cylinder 6 drives piston cylinder 4 rotations by spline, the driving screw thread of piston cylinder 4 by cooperating with casing valve urceolus II 5, promoting piston cylinder 4 moves down, and then promote sleeve pipe valve body 3 from setting A position (closing shaft location) (connection shaft location) motion to the B position on valve seat, thereby reach the purpose that is communicated with pit shaft; And when no frame motor 7 backward rotation, piston cylinder 4 moves up, and sleeve pipe valve body 3 turns to the A position again and closes pit shaft from the B position under the elastic force effect of axle spring, realizes that the make a trip pit shaft of process of underbalance closes and be communicated with.
After completion, sleeve pipe valve body 3 need be locked in the B position, at this moment the permanent communication that keeps pit shaft needs the ground no frame motor 7 of control to be rotated in the forward, and promotes piston cylinder 4 and moves downward, after sleeve pipe valve body 3 is pushed to the B position, ground control increases no frame motor 7 driving powers, increases the moment of torsion of no frame motor 7, screws piston cylinder 4 and bottom transit joint 1, make casing valve be in locking state, thereby reach the purpose of sleeve pipe valve body 3 permanent lockings in opening.
Be understandable that, more than about specific descriptions of the present invention, only for the present invention being described and being not to be subject to the described technical scheme of the embodiment of the invention, those of ordinary skill in the art is to be understood that, still can make amendment or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as satisfy, all within protection scope of the present invention.
Claims (1)
1. a under balance pressure drilling casing valve comprises bottom transit joint (1), casing valve urceolus I (2), casing valve urceolus II (5) and top transit joint (8); Be characterised in that: bottom transit joint (1), casing valve urceolus I (2), casing valve urceolus II (5), no frame motor (7), top transit joint (8) connects from bottom to up in turn, the rotor lower end of no frame motor (7) is connected with spline connecting cylinder (6), the internal spline of spline connecting cylinder (6) lower end matches with the external splines of piston cylinder (4), piston cylinder (4) places in the casing valve urceolus II (5) and with casing valve urceolus II (5) and is threaded, piston cylinder (4) matches with sleeve pipe valve body (3), and sleeve pipe valve body (3) is installed in the casing valve urceolus I (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241796.5A CN103334715B (en) | 2013-06-17 | 2013-06-17 | Under balance pressure drilling casing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310241796.5A CN103334715B (en) | 2013-06-17 | 2013-06-17 | Under balance pressure drilling casing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103334715A true CN103334715A (en) | 2013-10-02 |
| CN103334715B CN103334715B (en) | 2015-11-18 |
Family
ID=49242919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310241796.5A Expired - Fee Related CN103334715B (en) | 2013-06-17 | 2013-06-17 | Under balance pressure drilling casing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103334715B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832127A (en) * | 2015-04-29 | 2015-08-12 | 中国石油集团渤海钻探工程有限公司 | Intelligent control casing valve applied to unbalanced drilling/completion |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513944A (en) * | 1980-06-03 | 1985-04-30 | Otis Engineering Corporation | Valve with latching means |
| CN2537810Y (en) * | 2002-03-27 | 2003-02-26 | 许苏明 | Full path measurer |
| CN2931772Y (en) * | 2006-06-06 | 2007-08-08 | 新疆石油管理局钻井工艺研究院 | Under balance under well casing valve capable of measuring bottom-hole pressure |
| CN2937467Y (en) * | 2006-05-15 | 2007-08-22 | 新疆石油管理局钻井工艺研究院 | Under-balance well casing valve capable of measuring bottom-hole pressure |
| CN200964826Y (en) * | 2006-11-08 | 2007-10-24 | 新疆石油管理局钻井工艺研究院 | Under-balanced downhole casing valve capable of permanently locking |
| CN201031661Y (en) * | 2007-02-06 | 2008-03-05 | 新疆石油管理局钻井工艺研究院 | Hydraulic controlled under balance down-hole casing tube valve |
| CN101818630A (en) * | 2010-04-28 | 2010-09-01 | 金湖富源机械有限公司 | Mechanical underbalance downhole casing valve |
| US20120199367A1 (en) * | 2011-02-07 | 2012-08-09 | Saudi Arabian Oil Company | Partially Retrievable Safety Valve |
| CN202914033U (en) * | 2012-11-05 | 2013-05-01 | 中国石油集团川庆钻探工程有限公司 | Mechanical downhole casing valve |
-
2013
- 2013-06-17 CN CN201310241796.5A patent/CN103334715B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513944A (en) * | 1980-06-03 | 1985-04-30 | Otis Engineering Corporation | Valve with latching means |
| CN2537810Y (en) * | 2002-03-27 | 2003-02-26 | 许苏明 | Full path measurer |
| CN2937467Y (en) * | 2006-05-15 | 2007-08-22 | 新疆石油管理局钻井工艺研究院 | Under-balance well casing valve capable of measuring bottom-hole pressure |
| CN2931772Y (en) * | 2006-06-06 | 2007-08-08 | 新疆石油管理局钻井工艺研究院 | Under balance under well casing valve capable of measuring bottom-hole pressure |
| CN200964826Y (en) * | 2006-11-08 | 2007-10-24 | 新疆石油管理局钻井工艺研究院 | Under-balanced downhole casing valve capable of permanently locking |
| CN201031661Y (en) * | 2007-02-06 | 2008-03-05 | 新疆石油管理局钻井工艺研究院 | Hydraulic controlled under balance down-hole casing tube valve |
| CN101818630A (en) * | 2010-04-28 | 2010-09-01 | 金湖富源机械有限公司 | Mechanical underbalance downhole casing valve |
| US20120199367A1 (en) * | 2011-02-07 | 2012-08-09 | Saudi Arabian Oil Company | Partially Retrievable Safety Valve |
| CN202914033U (en) * | 2012-11-05 | 2013-05-01 | 中国石油集团川庆钻探工程有限公司 | Mechanical downhole casing valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832127A (en) * | 2015-04-29 | 2015-08-12 | 中国石油集团渤海钻探工程有限公司 | Intelligent control casing valve applied to unbalanced drilling/completion |
| CN104832127B (en) * | 2015-04-29 | 2017-09-15 | 中国石油集团渤海钻探工程有限公司 | Intelligent control casing valve applied under balance pressure drilling/completion |
| CN111706295A (en) * | 2020-07-14 | 2020-09-25 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
| CN111706295B (en) * | 2020-07-14 | 2021-03-23 | 西南石油大学 | Radio electromagnetic wave direct-current control pressure-relief sleeve valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103334715B (en) | 2015-11-18 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20160617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |