CN101440700A - Disconnection plugging test valve - Google Patents
Disconnection plugging test valve Download PDFInfo
- Publication number
- CN101440700A CN101440700A CNA2008102397782A CN200810239778A CN101440700A CN 101440700 A CN101440700 A CN 101440700A CN A2008102397782 A CNA2008102397782 A CN A2008102397782A CN 200810239778 A CN200810239778 A CN 200810239778A CN 101440700 A CN101440700 A CN 101440700A
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- ball valve
- tube
- hole
- tieback
- freed
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Abstract
The invention relates to a testing valve for releasing blockage underground, in particular to an underground tool for oil testing and production testing, which integrates the underground opening and closing of a well and the release and the blockage of a pipe column. The proposal comprises: an interconnecting mandrel and a tieback cylinder are connected through a shear pin; the front end of the interconnecting mandrel is provided with a fixed convex ear; the end of the tieback cylinder connected with the interconnecting mandrel is provided with a V-shaped sliding groove; the convex ear is clamped into the V-shaped sliding groove; the tieback cylinder is sequentially provided with a self-locking sleeve and a spring; the inner wall of the front end of the tieback cylinder is provided with locking steps; a pawl sleeve is arranged between the self-locking sleeve and the inner wall of the tieback cylinder; the front part of the pawl sleeve is provided with a plurality of evenly separated convex blocks of which the root parts are connected with the front ends; the convex block tilts towards the axle center; the middle part of he pawl sleeve is provided with a circle of lug bosses; the rear end of the pawl sleeve is provided with convex strips; the inner wall of an outer cylinder of a ball valve is provided with two operating arms; one end of each operating arm is provided with a convex ball and the other end of the operating arm is provided with a groove; a ball valve assembly inside the ball valve is provided with two holes; the convex strip of the pawl sleeve is clamped into the groove of the operating arm; and the convex ball of the operating arm is clamped into the hole of the ball valve assembly. The proposal avoids the leakage of underground gas or liquid, simplifies operation flow and saves equipment input. Moreover, in the testing valve.
Description
Technical field
The present invention relates to a kind of oil gas well formation testing pilot production downhole tool, especially relating to a kind of Ji Jingxiakaiguanjing, tubing string is freed and manage interior shutoff is the formation testing pilot production downhole tool of one.
Background technology
Along with the progress of petroleum exploration and development, oil gas well formation testing pilot production technology is brought in constant renewal in, and is more and more general and deep to the transformation of reservoir.Stimulation technology commonly used mainly is acidifying and pressure break.Reservoir is fine through permeability after transforming; formation fluid is very active; the deblocking lift pipe string needs a large amount of mud lubrications; cause the waste of great amount of manpower and material resources; reservoir has also been caused serious pollution; if simultaneously can not the shutoff stratum in the lift pipe string process, also there be the danger of blowout or oil and gas leakage, if formation fluid contains H
2Toxic gases such as S are even small leakage part might cause fatal personal injury.
Method commonly used at present is to adopt bidirectional self-locking packer+sealing on-off connector combination, can realize the packing of reservoir and annular space after the bidirectional self-locking packer set, can drop into blanking plug by steel wire operation in the sealing on-off connector axle and realize shutoff in the pipe, working string can be freed and docks from the sealing on-off connector.Like this can be earlier after reservoir reconstruction is finished by steel wire operation in sealing on-off connector axle, drop into blanking plug will manage in shutoff, free tubing string from sealing on-off connector again.Sealing on-off connector axle and blanking plug this moment stays the down-hole and realizes shutoff to reservoir with the bidirectional self-locking packer.Changing tubing string when need going into operation again pulls blanking plug out and gets final product.But there are many unreliable factors in the mode that adopts this kind steel wire operation to throw, drag for blanking plug, sand setting or fouling etc. all may influence the success or failure that steel wire is thrown, dragged for blanking plug in the bending of tubing string, well depth, hole deviation, earth magnetism, the pipe, just can only be forced to the deblocking lift pipe string in case throw, drag for the blanking plug failure.The problem that the front was said appears again in this moment easily, even and the blanking plug throwing, drag for smoothly and also can't finish test jobs sometimes because throwing, drag for blanking plug and must finish under pressure balanced condition, test pressure differential can't be set up.Simultaneously, steel wire operation itself also is a loaded down with trivial details and time-consuming operation, needs a whole set of winch wire, well head blowout control equipment and steel wire operation instrument, and a collection of skilled operating personnel.
Summary of the invention
At the situation of above prior art, the problem that the present invention at first solves is to realize shutoff when freeing, and secondly is to utilize to free plugging device and finish downhole testing work.The solution of the present invention is as follows: the shutoff testing arrangement is freed in a kind of down-hole, comprise the butt joint axle that is linked in sequence, the tieback tube, ball valve and lower contact, its improvement is, described butt joint axle adopts shear pin to be connected with the tieback tube, described butt joint axle front end has attaching clamp, described tieback tube connects butt joint axle end the V-arrangement chute, described lug snaps in the V-arrangement chute, described tieback tube inside is equipped with successively from lock tube, spring, on the described tieback tube front inner wall locking step is arranged, described have the ratchet cover between lock tube and tieback tube inwall, the anterior a plurality of projections that connect the even separation of front end for root of described ratchet cover, described projection tilts to the axle center, in the middle of the described ratchet cover circle boss is arranged, described ball valve outer tube inner wall is installed two motion arms, and described motion arm one end has the protruding ball other end clamping close device that is connected with ratchet cover rear end is installed, have two holes on the ball valve assembly in the described ball valve, the protruding ball of described motion arm snaps in the hole on the described ball valve assembly.
An optimal way of the present invention: the groove of ratchet cover rear end, the raised line of motion arm front end, the groove that described ratchet puts engages with raised line on the motion arm.
An optimal way of the present invention: described tieback tube inwall is positioned at the spring bottom limited block is installed.
An optimal way more of the present invention: the pin hole of described butt joint axle link has two and keep at a certain distance away to be up and down and arrange.
Another optimal way of the present invention: the described lower contact other end is connected with the memory-type pressure meter.
Another optimal way of the present invention: described butt joint axle and tieback socket joint contravention have sealing ring.
An optimal way more of the present invention: on one side described V-arrangement chute is uncovered, Yi Bian have hook.
This programme adopts the ratchet cover to block from lock tube, finish the beginning of down-hole ball valve, avoid the leakage of mine gas or liquid, utilized the V-arrangement chute to reach the purpose that tubing string is freed, adopted tubing string directly to salvage ball valve, waste and the error of using steel wire to throw, drag for have been avoided, connect the operation that the memory-type pressure meter is finished testing pressure down hole in lower contact place, switching ball is once just finished down-hole shutoff and test for the second time, this programme efficient height, accident rate are low, easy to use.
Description of drawings
Fig. 1 frees shutoff closing well schematic diagram
Fig. 2 frees the shutoff schematic diagram that drives a well
Fig. 3 V-arrangement chute structural representation
Fig. 4 ratchet cover schematic perspective view
Fig. 5 ratchet cover front view
Fig. 6 ratchet cover vertical view
The specific embodiment
The mode that this programme adopts butt joint axle 1, tieback tube 2, ball valve 3 and lower contact 4 to link together is finished whole shutoff and is freed process.
Detailed process such as Fig. 1,2 is described: will dock axle 1 one ends and be connected with tubing string, the other end is connected with tieback tube 2, the point diameter of butt joint axle 1 also can insert in the tieback tube 2 less than the internal diameter of tieback tube 2, the mode that is connected employing shearing bearing pin 17 with tieback tube 2 is fixedly connected, as shown in Figure 3, a V-arrangement chute 15 is arranged below tieback tube 2 pin shaft holes, V-arrangement chute 15 has hook on one side, another is uncovered, on butt joint axle 1, two pin holes that are arranged above and below 18 are arranged, distance between two pin holes equates with the distance of the bottom of V-arrangement chute 15 to hook place, below butt joint axle 1 pin hole 18, attaching clamp 16 is arranged, lug 16 is stuck in the V-arrangement chute of tieback tube 2 15, shear pin 17 is installed in different pin hole 18, that ball valve is opened in the time of can determining to go into the well or close, the front end of butt joint axle 1 is cylindrical, at the lock 22 that the section of having diameter is big slightly foremost, the point diameter of butt joint axle 1 also can insert in the tieback bobbin less than the internal diameter of tieback tube, between tieback tube 2 and the ball valve 3 by being threaded, the diameter of tieback tube 2 front portions is greater than the diameter at tieback tube rear portion, and the diameter drop forms spacing rank 14 at tieback tube 2 middle parts.
In the tube wall inside of ball valve 3 two motion arms 8 are arranged, each motion arm 8 has protruding ball 9 towards the front end of axle center face, the rear end has groove 12, the pothole 19 that projection on two respective operations arms 8 is arranged on the ball valve assembly 10, the protruding ball 9 on the motion arm 8 snap in 19 li of ball valve assembly 10 lip-deep potholes and form sealing.
But in ball valve 3 pipes, be equipped with axially-movable from lock tube 5, between lock tube 5 and ball valve assembly 10, spring 7 is installed, as Fig. 4, shown in 6, ratchet cover 6 is installed between lock tube 5 and ball valve 2 tube walls, front end one circle of ratchet cover 6 is projection 20, whole circle projection 20 evenly is divided into spaced a plurality of projection 21, each projection 21 tilts to the axle center under the normal condition, from the diameter of lock tube 5 greater than butt joint axle 1 on the diameter of lock 22, being pushed up ratchet projection 21 places from lock tube 5 by spring 7 when not applying power outwards struts projection, the diameter that projection 21 forms is less than the diameter from lock tube 5, therefore can not overlap 6 from lock tube 5 from ratchet, projection 21 another sides abut against on the locking step 14 of tieback tube 2, and locking step 14 can guarantee that can not make to move downward from lock tube 5 this moment because of other reason makes ball valve 3 unexpected switches.There is circle boss 13 at the middle part of ratchet cover 6, when driving ratchet cover 6, the boss 13 that promotes the ratchet middle part when lock tube 5 moves downward moves downward, as shown in Figure 5, ratchet overlaps 6 rear portions and two motion arm projection 12 opposite positions fluted 11, motion arm upper protruding block 12 snaps in the ratchet cover groove 12, when lock tube 5 is stressed, move downward and promote spring 7, spring 7 is in compressed process, driving ratchet cover 6 moves downward, and then two motion arms 8 of groove 11 promotions of ratchet cover rear end move downward, protruding ball 9 on the motion arm 8 promotes ball valve assembly 10, finish that the down-hole drives a well or closing well, spring 7 with from lock tube 5 opposite ends limited block is arranged, can prevent that spring 7 from being produced elastic deformation by excess compression.
Ratchet cover 6 and motion arm 8 be connected can also coloured silk with modes such as hinged, fastenings.
As shown in Figure 1, 2, to dock axle 1 during work is fixed together by shear pin 17 with tieback tube 2, shear pin 17 permanent positions can be that needs are opened or closed and come to determine that tieback tube 2 is connected with ball valve 3, the other end of ball valve 3 is connected with lower contact 4 again according to ball valve 3.Ball valve 3 times is behind the precalculated position, set shear pin 17 and shear the pressure of pressing less than promoting from lock tube 5, the mode of utilizing annular space to suppress, butt joint axle 1 is separated shear pin 17 cut-outs with tieback tube 2, tieback tube 2 by the hook on the V-arrangement chute 15 with dock axle 1 on lug 16 formation flexible connections, continue the whereabouts tubing string, the lug 16 that docks the axle end this moment drops on the bottom of V-arrangement chute 15, lock 22 falls in the projection 21 that ratchet overlaps 6 front ends and contacts from lock tube 5, and promote to move downward from lock tube 5, ratchet projection 21 closes up in the middle of the trend and blocks lock 22 when lock tube 5 moves downward, continue downward pressing spring 7 and drive ratchet cover 6 to promote motion arm 8 from lock tube 5, finish closing and opening of ball valve assembly 10, in the time of need freeing, the rotation tubing string, the lug 16 of butt joint on the axle 1 screwed out from the open-mouth of V-arrangement chute 15, and then disengaging tieback tube 2, lock 22 moves upward simultaneously, from lock tube 5 also jack-up upwards under spring 7 effects simultaneously, before arriving ratchet cover projection 21, projection 21 is outwards strutted, and projection 21 unclamps lock 22, continues the upper lifting pipe post and finishes the whole process of overcoming difficulties.
The running string of reservoir reconstruction should possess frees and the shutoff function, and must be before tubing string is freed with the reservoir shutoff, in this programme when ball valve during in the down-hole, the mode that can utilize annular space to suppress, pressure affacts on lock tube 5, move downward and following pressing spring 7 drive ratchets covers 6 promotion motion arms 8 from lock tube 5, finish closing and opening of ball valve.When proposing ball valve if desired, will dock under the axle to the down-hole, the lug that makes front end enters from the V-arrangement chute opening end of tieback tube, rotates to V-arrangement chute another side again, utilizes the hook of another side again, and this moment, the upper lifting pipe post just tripped out ball valve in the lump.Also can articulate the memory-type pressure meter, propose pressure gauge after waiting the testing time, to obtain the various data in down-hole in the ball valve lower contact.
Claims (7)
1, the shutoff testing arrangement is freed in a kind of down-hole, comprise the butt joint axle (1) that is linked in sequence, tieback tube (2), ball valve (3) and lower contact (4), it is characterized in that, described butt joint axle (1) adopts shear pin (17) to be connected with tieback tube (2), described butt joint axle (1) front end has attaching clamp (16), described tieback tube (2) connects butt joint axle end V-arrangement chute (15), described lug (16) snaps in the V-arrangement chute (15), described tieback tube (2) inside is equipped with successively from lock tube (5), spring (7), on described tieback tube (2) front inner wall locking step (14) is arranged, described have ratchet cover (6) between lock tube (5) and tieback tube (2) inwall, the anterior a plurality of projections (21) that connect the even separation of front end for root of described ratchet cover (6), described projection (21) tilts to the axle center, circle boss (13) is arranged in the middle of the described ratchet cover (6), described ball valve (3) outer tube inner wall is installed two motion arms (8), described motion arm (8) one ends have protruding ball (9) other end clamping close device that is connected with ratchet cover (6) rear end, described ball valve are installed
(3) have two holes on Nei the ball valve assembly (10), the protruding ball (9) of described motion arm (8) snaps in the hole on the described ball valve assembly (10).
2, the shutoff testing arrangement is freed in a kind of down-hole as claimed in claim 1, described clamping close device comprises: the groove (11) of ratchet cover (6) rear end, the raised line (12) of motion arm (8) front end, the groove (11) on the described ratchet cover (6) engages with raised line (12) on the motion arm (8).
3, the shutoff testing arrangement is freed in a kind of down-hole as claimed in claim 1 or 2, it is characterized in that, described tieback tube (2) inwall is positioned at the spring bottom limited block is installed.
4, the shutoff testing arrangement is freed in a kind of down-hole as claimed in claim 3, it is characterized in that, the pin hole (18) of described butt joint axle (1) link has two and keep at a certain distance away to be up and down and arrange.
5, the shutoff testing arrangement is freed in a kind of down-hole as claimed in claim 4, it is characterized in that, the described lower contact other end is connected with the memory-type pressure meter.
6, the shutoff testing arrangement is freed in a kind of down-hole as claimed in claim 5, it is characterized in that, described butt joint axle (1) has sealing ring with tieback tube (2) contact jaw.
7, the shutoff testing arrangement is freed in a kind of down-hole as claimed in claim 6, it is characterized in that, described V-arrangement chute (15) is while be the uncovered hook that has.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102397782A CN101440700B (en) | 2008-12-17 | 2008-12-17 | Disconnection plugging test valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102397782A CN101440700B (en) | 2008-12-17 | 2008-12-17 | Disconnection plugging test valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101440700A true CN101440700A (en) | 2009-05-27 |
| CN101440700B CN101440700B (en) | 2012-02-15 |
Family
ID=40725285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102397782A Active CN101440700B (en) | 2008-12-17 | 2008-12-17 | Disconnection plugging test valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101440700B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989567A (en) * | 2018-01-16 | 2018-05-04 | 江苏航天鸿鹏数控机械有限公司 | Jet-preventing tool in a kind of abrasive perforating |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2861466Y (en) * | 2005-12-02 | 2007-01-24 | 大庆油田装备制造集团 | Downwell automatic plugging device for snubbing unit without digging and spraying |
| CN201121509Y (en) * | 2007-09-03 | 2008-09-24 | 大庆比尔科技有限公司 | Vibration damping environment friendly electronic driving down-hole oil tube plugging valve |
| CN201318150Y (en) * | 2008-12-17 | 2009-09-30 | 新疆华油油气工程有限公司 | Device for testing, extricating and plugging under well |
-
2008
- 2008-12-17 CN CN2008102397782A patent/CN101440700B/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989567A (en) * | 2018-01-16 | 2018-05-04 | 江苏航天鸿鹏数控机械有限公司 | Jet-preventing tool in a kind of abrasive perforating |
| CN107989567B (en) * | 2018-01-16 | 2024-02-20 | 江苏航天鸿鹏数控机械有限公司 | Anti-blowout tool in sand blasting perforation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101440700B (en) | 2012-02-15 |
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