CN207315304U - Closure sliding bush apparatus in underground hydraulic pressure - Google Patents
Closure sliding bush apparatus in underground hydraulic pressure Download PDFInfo
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- CN207315304U CN207315304U CN201721162153.1U CN201721162153U CN207315304U CN 207315304 U CN207315304 U CN 207315304U CN 201721162153 U CN201721162153 U CN 201721162153U CN 207315304 U CN207315304 U CN 207315304U
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Abstract
Closure sliding bush apparatus, is equipped with a kind of underground hydraulic pressure：Ball valve switch in ball valve outer barrel, the ball valve switch control sliding sleeve switch to link by sliding sleeve axis, wherein, sliding sleeve switch includes：Shearing outer barrel, be fixedly mounted on the sliding sleeve outer barrel of shearing outer barrel one end, the ball valve outer barrel for being fixedly mounted on the shearing outer barrel other end, sliding sleeve mounted in sliding sleeve outer barrel, shearing outer barrel, the sliding sleeve axis of ball valve outer barrel；Ball valve switch includes：Motion arm on sliding sleeve axis, when sliding sleeve axis is in top dead-centre, ball valve is shown in a fully open operation, and sliding sleeve is closed；When sliding sleeve axis is in bottom dead centre, ball valve is closed, and sliding sleeve is in open mode.The utility model is not only ensured when opening sliding sleeve, makes in pipe that ball valve has been switched off and locks before pressure release, avoids the possibility of ball valve and sliding sleeve all in half-open position；Moreover, also substantially increase the efficiency and security to oil/gas well formation testing, pilot production.
Description
Technical field
Oil tool is the utility model is related to, more particularly to it is a kind of for oil/gas well formation testing, the underground hydraulic pressure of pilot production
Interior closure sliding bush apparatus.Belong to petroleum works field.
Background technology
At present, in oil/gas well formation testing, pilot production, for multiple zone well generally using the test journey of ground return layer on individual layer
Sequence.Since ground return layer test program one-trip string can be only done the formation testing of a target zone, pilot production work on individual layer, and
And after a target zone has been tried, it is necessary to which lower bridge plug or cement plug closure has tried layer, then opens last layer, and last layer is carried out
Formation testing, pilot production, closure.So one by one on return complete a well formation testing work.Therefore, surveyed for multiple zone well stratum
Examination need to frequently rise, lower working string, not only result in that the formation testing cycle is longer, testing efficiency is relatively low；Moreover, during trip-out kill-job,
It is also easy to cause stratum serious secondary pollution, and there are certain security risk.
Utility model content
The main purpose of the utility model is that overcoming disadvantages mentioned above existing in the prior art, and provide a kind of underground hydraulic pressure
Interior closure sliding bush apparatus, its is easy to operate, by hydraulic operation mode, while being blocked to being realized in pipe, additionally it is possible to open
Closure sliding sleeve in the hydraulic pressure of radial flow path；Not only ensure when opening sliding sleeve, make in pipe that ball valve has been switched off simultaneously before pressure release
Locking, avoids the possibility of ball valve and sliding sleeve all in half-open position；Oil/gas well stratum is surveyed moreover, also substantially increasing
Examination, the efficiency and security of pilot production；When avoiding trip-out kill-job, the secondary pollution caused by stratum.
The purpose of this utility model is realized by following technical scheme：
Closure sliding bush apparatus in a kind of underground hydraulic pressure, it is characterised in that：It is equipped with：Ball valve in ball valve outer barrel is opened
Close, which controls sliding sleeve switch to link by sliding sleeve axis, wherein, sliding sleeve switch includes：Shearing outer barrel, be fixedly mounted on
The sliding sleeve outer barrel of shearing outer barrel one end, the ball valve outer barrel for being fixedly mounted on the shearing outer barrel other end, sliding sleeve mounted in sliding sleeve outer barrel,
Shear outer barrel, the sliding sleeve axis of ball valve outer barrel；Ball valve switch includes：Motion arm on sliding sleeve axis, at sliding sleeve axis
When top dead-centre, ball valve is shown in a fully open operation, and sliding sleeve is closed；When sliding sleeve axis is in bottom dead centre, ball valve, which is in, closes
State, sliding sleeve are in open mode.
The motion arm is buckled in sliding sleeve axis the lowermost card slot, and can not be with sliding sleeve axis by the limitation of ball valve outer barrel
Depart from, can only be with sliding sleeve axis linkage from top to bottom.
The sliding sleeve axis is pipe, and the tube wall circumference of the pipe upper end is equipped with several first flow holes, the lower end of pipe
Equipped with outer step and interior step；The upper dead center position of sliding sleeve axis is the lower face by the outer step on sliding sleeve axis and shearing outer barrel
What contact was controlled, the lower dead point position of sliding sleeve axis is contacted by the upper surface of interior step and the ball cylinder of sliding sleeve axis lower end
With control；
A rectangle card slot is equipped with below the outer step, the motion arm of ball valve switch is hung to card；First flow hole two
Be additionally provided between two installation ball seat cut off cut off hole, on the outer tube surface in upper and lower close the first flow hole in first flow hole divide
Not She You the first seal groove, the first sealing ring and the 3rd sealing ring are housed in the first seal groove；Outside the lower section in first flow hole
Pipe face is equipped with annular groove, and snap ring is housed in annular groove；The lower section outer tube surface of annular groove is cut off equipped with what installation sliding sleeve was cut off
Groove；The lower section tube wall of annular groove is equipped with several first relief holes, is set on the outer tube surface cut off between groove and the first relief hole
There is the 5th seal groove, and the 5th sealing ring is housed；On the lower section outer tube surface of the first relief hole, the 7th seal groove is additionally provided with, the
The 7th sealing ring is housed in seven seal grooves, the 7th sealing ring is when sliding sleeve axis is in upper dead center position, across on envelope shearing outer barrel
Second relief hole；8th sealing ring is between shearing outer barrel and ball valve outer barrel, for preventing fluid hose is inside and outside from ganging up；9th
Sealing ring is mounted between upper ball base and ball cylinder, for preventing fluid hose is inside and outside from ganging up；Tenth sealing ring connects mounted in lower ball base with
Between head, for preventing fluid hose is inside and outside from ganging up；11st sealing ring is mounted between lower contact and ball valve outer barrel, for preventing
Fluid hose is inside and outside to gang up；Motion arm card slot is used to place and fixed operation arm；Ball cylinder is made jointly with fixed operation arm and sliding sleeve axis
With after being sheared for pin, ball valve is closed in linkage.
It is one section of unthreaded hole inside the upper end of the sliding sleeve axis, the depth of unthreaded hole is more than the two of upper ball base and lower ball base length
Times.
The shearing outer barrel is one and is internally provided with annular groove, wall equipped with second flow channel hole, both ends equipped with screw thread, endoporus
Smooth double male joint；The bottom of shearing outer barrel threaded upper ends is equipped with a circle and cuts off hole, is cut off to install sliding sleeve；Shear outer barrel
Lower end be connected with ball valve outer barrel thread seal, the outer tube surface of endoporus and sliding sleeve axis is clearance fit, and sliding sleeve axis can be made smooth
Pass through, sliding sleeve axis is up and down flexible in shearing outer barrel.
The sliding sleeve outer barrel is pair that a both ends are equipped with screw thread, middle part tube wall is equipped with second flow channel hole, endoporus is smooth
Female pipe nipple, the lower end screw thread of sliding sleeve outer barrel are connected with shearing the threaded upper ends of outer barrel, between the outer tube surface of its endoporus and sliding sleeve axis is
Gap coordinates；Sliding sleeve, which is limited, after the installation of sliding sleeve outer barrel cuts off the freedom cut off with ball seat, meanwhile, snap ring is compressed to and sliding sleeve axis
The close state of outer tube surface, snap ring is smoothly entered in the endoporus of shearing outer barrel downwards.
The snap ring is a flexible unilateral trapezoid-shaped openings ring, and the trapezoidal side of snap ring is on lower right-angle side, with side
Just the endoporus of shearing outer barrel 11 is smoothly entered；Snap ring cannot relatively move in the card slot on sliding sleeve axis between sliding sleeve axis.
The beneficial effects of the utility model：Due to the adoption of the above technical scheme, its is easy to operate for the utility model, passes through liquid
Press operation mode, while being blocked to being realized in pipe, additionally it is possible to open closure sliding sleeve in the hydraulic pressure of radial flow path；Not only ensure
When opening sliding sleeve, make in pipe that ball valve has been switched off and locks before pressure release, avoid ball valve and sliding sleeve all in half-open shape
The possibility of state；Moreover, also substantially increase the efficiency and security to oil/gas well formation testing, pilot production；The pressure of the drill is avoided
During well, the secondary pollution caused by stratum.
Brief description of the drawings
Fig. 1 is the schematic front view under the utility model structure closed mode.
Fig. 2 is the schematic front view under the utility model structure opening.
Fig. 3 is the utility model structure general assembly schematic diagram.
Major Symbol explanation in figure：
1. sliding sleeve outer barrel, 2. ball seats, 3. first sealing rings, 4. second sealing rings, 5. ball seats are cut off, 5 ' parts ball seats are cut
Pin, 6. first flow holes, 7. the 3rd sealing rings, 8. the 4th sealing rings, 9. second flow channel holes, 10. snap rings, 11. shearing outer barrels,
12. annular groove, 13. sliding sleeves are cut off, 13 ' part sliding sleeves are cut off, 14. the 5th sealing rings, 15. first relief holes, 16. the 6th sealing
Circle, 17. second relief holes, 18. the 7th sealing rings, 19. the 8th sealing rings, 20. sliding sleeve axis, step in 21., 22. outer steps,
23. motion arm card slot, 24. pitchings, 25. ball valve outer barrels, 26. motion arms, 27. ball cylinders, 28. the 9th sealing rings, 29. upper ball bases,
30. ball valve, 31. lower ball bases, 32. the tenth sealing rings, 33. dish springs, 34. the 11st sealing rings, 35. lower contacts.
Embodiment
Such as Fig. 1, Fig. 2, shown in Fig. 3, the utility model is equipped with：Ball valve switch in ball valve outer barrel 25, the ball valve
Switch controls sliding sleeve switch to link by sliding sleeve axis 20, wherein, sliding sleeve switch includes：Shearing outer barrel 11, be fixedly mounted on shearing
The sliding sleeve outer barrel 1 of 11 one end of outer barrel, the ball valve outer barrel 25 for being fixedly mounted on shearing 11 other end of outer barrel, sliding sleeve are outside sliding sleeve
Cylinder 1, shearing outer barrel 11, the sliding sleeve axis 20 inside ball valve outer barrel 25；Ball valve switch includes：Two behaviour on sliding sleeve axis 20
Make arm 26, when sliding sleeve axis 20 is in top dead-centre, ball valve 30 is shown in a fully open operation, and sliding sleeve is closed；At sliding sleeve axis 20
When bottom dead centre, ball valve 30 is closed, and sliding sleeve is in open mode.
Above-mentioned two motion arm 26 is buckled in 20 the lowermost card slot of sliding sleeve axis, and the limitation nothing for passing through ball valve outer barrel 25
Method departs from sliding sleeve axis 20, can only be with 20 linkage from top to bottom of sliding sleeve axis；When sliding sleeve axis 20 is in upper dead center position (as shown in Figure 1
Position), ball valve 30 is shown in a fully open operation, when sliding sleeve axis 20 is in lower dead point position (position as shown in Figure 2), ball valve 30
It is closed.The upper dead center position of sliding sleeve axis 20 is the lower end by the outer step 22 on sliding sleeve axis 20 and shearing outer barrel 11
Face contact is controlled, and the lower dead point position of sliding sleeve axis 20 is by the upper of the interior step 21 of sliding sleeve axis 20 lower end and ball cylinder 27
What end contact was controlled.
Above-mentioned sliding sleeve axis 20 is pipe, and the tube wall circumference of the pipe upper end is equipped with several 6 (the present embodiment of first flow hole
For：4~8), the lower end of pipe is equipped with outer step 22 and interior step 21, and a rectangle card slot is equipped with below outer step 22, uses
Two motion arms 26 of ball valve switch are hung with card.First flow hole 6 on sliding sleeve axis 20 is additionally provided between any two cuts off hole, to
Installation ball seat cuts off 5, and is respectively equipped with the first sealing on the outer tube surface in the upper and lower close first flow hole 6 in first flow hole 6
Groove, the first seal groove is interior to be equipped with the first sealing ring 3 and the 3rd sealing ring 7；Card is equipped with the lower section outer tube surface in first flow hole 6
Annular groove 12, annular groove 12 is interior to be equipped with snap ring 10；The lower section outer tube surface of annular groove 12 on sliding sleeve axis 20 is equipped with and cuts off groove, to
Installation sliding sleeve cuts off 13；The lower section tube wall of annular groove 12 is equipped with several first relief holes 15, is cutting off groove and the first relief hole
Outer tube surface between 15 is equipped with the 5th seal groove, and the 5th sealing ring 14 is housed；In the lower section outer tube surface of the first relief hole 15
On, the 7th seal groove of twice is additionally provided with, the 7th sealing ring 18 is housed in the 7th seal groove, the 7th sealing ring 18 is at sliding sleeve axis 20
When upper dead center position, the second relief hole 17 on envelope shearing outer barrel 11；8th sealing ring 19 is mounted in shearing outer barrel 11 and ball
Between valve outer barrel 25, for preventing fluid hose is inside and outside from ganging up；9th sealing ring 28 is mounted between upper ball base 29 and ball cylinder 27, is used
In preventing, fluid hose is inside and outside to gang up；Tenth sealing ring 32 is mounted between lower ball base 31 and lower contact 35, for preventing fluid hose
It is inside and outside to gang up；11st sealing ring 34 is mounted between lower contact 35 and ball valve outer barrel 25, for preventing fluid hose is inside and outside from ganging up；
Motion arm card slot 23 is used to place and fixed operation arm 26；Ball cylinder 27 and fixed operation arm and 20 collective effect of sliding sleeve axis, are used for
After pin shearing, ball valve 30 is closed in linkage；Lower ball base 31 and dish spring 33 are used for fixed and regulation ball valve 30 position；Lower contact
35 bottoms carry screw thread, for being directly connected with other instruments of going into the well.
The effect of outer step 22 on above-mentioned sliding sleeve axis 20 is to limit the upper dead center position of the movement of sliding sleeve axis 20；Sliding sleeve axis 20
On the effect of interior step 21 be to limit the lower dead point position of sliding sleeve axis movement.
It is one section of unthreaded hole inside the upper end of above-mentioned sliding sleeve axis 20, the depth of unthreaded hole is more than 31 length of upper ball base 29 and lower ball base
Twice.
Above-mentioned shearing outer barrel 11 be one be internally provided with annular groove 12, wall is equipped with second flow channel hole 9, both ends and is equipped with spiral shell
The smooth double male joint of line, endoporus；The bottom of shearing 11 threaded upper ends of outer barrel is equipped with a circle and cuts off hole, is cut off to install sliding sleeve
13；The lower end of shearing outer barrel 11 is connected with 25 thread seal of ball valve outer barrel, and the outer tube surface of endoporus and sliding sleeve axis 20 is clearance fit,
And can pass through sliding sleeve axis 20, sliding sleeve axis 20 is up and down flexible in shearing outer barrel 11.
Before outer barrel 11 is sheared in installation, first ball valve switch to be installed correct, and it is close on sliding sleeve axis 20 to install the 5th
Seal 14, the 6th sealing ring 16, the 7th sealing ring 18, but the first sealing ring 3, the 3rd sealing ring 7 and snap ring 10 cannot be installed, because
Be, the first sealing ring 3, the 3rd sealing ring 7 by that can be damaged during annular groove 12, snap ring 10 by can not be by during annular groove 12,
So that sliding sleeve axis 20 is locked in lower dead point position and can not return to top dead-centre.After shearing outer barrel 11 installs, sliding sleeve axis 20 is drawn
To upper dead center position, refilled sliding sleeve cut off 13, snap ring 10, the first sealing ring 3, the 3rd sealing ring 7 and the second sealing ring 4,
The ball seat 2 and ball seat of 4th sealing ring 8 cut off 5, finally, then install sliding sleeve outer barrel 1.
Above-mentioned sliding sleeve outer barrel 1 is that a both ends are equipped with screw thread, middle part tube wall is equipped with 9 ((the present embodiment of second flow channel hole
For：4-8), the smooth double female pipe nipples of endoporus, the lower end screw thread of sliding sleeve outer barrel 1 is connected with the threaded upper ends of shearing outer barrel 11,
The outer tube surface of its endoporus and sliding sleeve axis 20 is clearance fit.Sliding sleeve outer barrel 1 install after limit sliding sleeve cut off 13 and ball seat cut off 5
Freedom, meanwhile, by snap ring 10 be compressed to the outer tube surface of sliding sleeve axis 20 very close to state, enable snap ring 10 smooth downwards
Into in the endoporus of shearing outer barrel 11.
Above-mentioned snap ring 10 is a flexible unilateral trapezoid-shaped openings ring, and the trapezoidal side of snap ring 10 exists in lower right-angle side
On, to facilitate the endoporus for smoothly entering shearing outer barrel 11, since the card slot on sliding sleeve axis 20 is a rectangle card slot, so, card
Ring 10 cannot relatively move in the card slot on sliding sleeve axis 20 between sliding sleeve axis 20, and the snap ring being opened in shearing outer barrel 11
Groove 12 is a unilateral dovetail groove, trapezoidal side on lower right-angle side, so, snap ring 10 enter annular groove 12 it is inner after again can not be upward
It is mobile, so that, sliding sleeve axis 20 is locked in lower dead point position, and then, ball valve 30 is locked in off position, and maintained in dismounting
When shearing outer barrel 11 can be taken out upwards from sliding sleeve axis 20.
As shown in Figure 1, in an initial condition, sliding sleeve axis 20 cuts off 13 by sliding sleeve and is locked in upper dead center position, at this time,
Ball valve 30 is shown in a fully open operation, and the first flow hole 6 on sliding sleeve axis 20 is sealed with the dislocation of second flow channel hole 9 on sliding sleeve outer barrel 1,
Meanwhile ball seat 2 is also dead across closure by the first flow hole 6 on sliding sleeve axis, and cuts off 5 by ball seat and be locked, thus, sliding sleeve
It is closed；Snap ring on first flow hole 6 on sliding sleeve axis to the distance between second flow channel hole 9, sliding sleeve axis at this time
The distance between annular groove 12 on 10 to shearing outer barrel 11, on the first relief hole 15 on sliding sleeve axis 20 to shearing outer barrel 11
The distance between second relief hole 17, sliding sleeve axis 20 are equal to ball valve 30 from standard-sized sheet the distance between from top dead-centre to bottom dead centre
Displacement needed for state to full off state.
Above-mentioned ball seat cuts off the 5 required pressure differences cut and cuts off 13 by the pressure difference needed for cutting more than sliding sleeve.
Utility model works principle：
When needing to close ball valve 30, when opening sliding sleeve, a suitable pitching 24 only need to be put into out of pipe, pitching 24 is fallen on
On ball seat 2, downward closure is formed at ball seat 2, at this time, then is built the pressure out of pipe, by the formation pressure difference up and down of pitching 24, the pressure
Difference, which translates into power, to be made ball seat 2 and sliding sleeve axis 20 while has the trend moved downward, first after more than certain pressure difference
First, sliding sleeve is cut off into 13 cuttings, make to cut off be separated into 13 and part sliding sleeve cut off 13 ' two sections, sliding sleeve axis 20 and thereon all
Component moves down together, promotes 26 downlink of motion arm, ball valve 30 is rotated by 90 ° and is closed；At this time, the snap ring being located on sliding sleeve axis 20
10 enter in the annular groove 12 in shearing outer barrel 11, and sliding sleeve axis 20 is locked in lower dead point position, so that, ball valve 30 is locked in
Closed mode, avoids ball valve 30 and is accidentally opened, meanwhile, the first relief hole 15 on sliding sleeve axis 20 is with shearing on outer barrel 11
Second relief hole 17 aligns and connects, and the space between pitching 24 and ball valve 30 is connected with outside pipe, and first on sliding sleeve axis 20
Runner hole 6 is alignd with the second flow channel hole 9 on sliding sleeve outer barrel 11, but since ball seat 2 is not destroyed also, sliding sleeve can't be opened；
Continue to suppress in pipe, after more than certain pressure, ball seat cuts off 5 and is cut, make to cut off be separated into 5 and part sliding sleeve cut off
5 ' two sections, ball seat 2 and pitching 24 are fallen together, and the liquid of its lower trap is discharged at the first relief hole 6, the second relief hole 9, this
When, sliding sleeve is just opened, and pipe is outer with being connected in the pipe of the top of ball valve 30.
As shown in Fig. 2, in which final state, using two groups of sliding sleeves cut off 13 and ball seat cut off 5 and control ball valve 30 respectively
The opening with sliding sleeve is closed, moreover, the pressure opened needed for sliding sleeve is more than the pressure closed needed for ball valve 30, is made sure that
When opening sliding sleeve, make the ball valve 30 before pressure release in pipe, have been switched off and lock, avoid ball valve 30 and sliding sleeve all in half-open
The possibility of state.
Above-mentioned ball valve, ball cylinder are the prior art, and the technology of not specified (NS) is the prior art, and so it will not be repeated.The above,
Only it is the preferred embodiment of the utility model, not makees limitation in any form to the utility model, it is every according to this
Any simple modification, equivalent change and modification that the technical spirit of utility model makees above example, still falls within this reality
In the range of new technique scheme.
Claims (8)
- A kind of 1. closure sliding bush apparatus in underground hydraulic pressure, it is characterised in that：It is equipped with：Ball valve switch in ball valve outer barrel, The ball valve switch controls sliding sleeve switch to link by sliding sleeve axis, wherein, sliding sleeve switch includes：Shearing outer barrel, be fixedly mounted on and cut The sliding sleeve outer barrel of outer barrel one end, the ball valve outer barrel for being fixedly mounted on the shearing outer barrel other end, sliding sleeve is cut to be mounted in sliding sleeve outer barrel, cut Cut the sliding sleeve axis of outer barrel, ball valve outer barrel；Ball valve switch includes：Motion arm on sliding sleeve axis, be in when sliding sleeve axis During top dead-centre, ball valve is shown in a fully open operation, and sliding sleeve is closed；When sliding sleeve axis is in bottom dead centre, ball valve, which is in, closes shape State, sliding sleeve are in open mode.
- 2. closure sliding bush apparatus in underground hydraulic pressure according to claim 1, it is characterised in that：The motion arm is buckled in cunning Cover in axis the lowermost card slot, and can not be departed from by the limitation of ball valve outer barrel with sliding sleeve axis, can only be with sliding sleeve axis linkage from top to bottom.
- 3. closure sliding bush apparatus in underground hydraulic pressure according to claim 1, it is characterised in that：The sliding sleeve axis is pipe, The tube wall circumference of the pipe upper end is equipped with several first flow holes, and the lower end of pipe is equipped with outer step and interior step；Sliding sleeve axis Upper dead center position be by the outer step on sliding sleeve axis and shearing outer barrel lower face contact be controlled, under sliding sleeve axis Dead-centre position is controlled by the upper surface contact of interior step and the ball cylinder of sliding sleeve axis lower end.
- 4. closure sliding bush apparatus in underground hydraulic pressure according to claim 3, it is characterised in that：Set below the outer step There is a rectangle card slot, the motion arm of ball valve switch is hung to card；First flow hole is additionally provided with what installation ball seat was cut off between any two Hole is cut off, the first seal groove, the first sealing are respectively equipped with the outer tube surface in the upper and lower close first flow hole in first flow hole The first sealing ring and the 3rd sealing ring are housed in groove；Annular groove is equipped with the lower section outer tube surface in first flow hole, in annular groove Equipped with snap ring；The lower section outer tube surface of annular groove cuts off groove equipped with what installation sliding sleeve was cut off；The lower section tube wall of annular groove is equipped with Several first relief holes, are equipped with the 5th seal groove on the outer tube surface cut off between groove and the first relief hole, and close equipped with the 5th Seal；On the lower section outer tube surface of the first relief hole, the 7th seal groove is additionally provided with, the 7th sealing ring is housed in the 7th seal groove, 7th sealing ring is when sliding sleeve axis is in upper dead center position, the second relief hole on envelope shearing outer barrel；8th sealing ring is mounted in Shear between outer barrel and ball valve outer barrel, for preventing fluid hose is inside and outside from ganging up；9th sealing ring mounted in upper ball base and ball cylinder it Between, for preventing fluid hose is inside and outside from ganging up；Tenth sealing ring is mounted between lower ball base and lower contact, for preventing in fluid hose, Gang up outside；11st sealing ring is mounted between lower contact and ball valve outer barrel, for preventing fluid hose is inside and outside from ganging up；Motion arm card Groove is used to place and fixed operation arm；Ball cylinder and fixed operation arm and sliding sleeve axis collective effect, after being sheared for pin, linkage is closed Close ball valve.
- 5. block sliding bush apparatus in the underground hydraulic pressure according to claim 1 or 3, it is characterised in that：The sliding sleeve axis it is upper Internal end is one section of unthreaded hole, and the depth of unthreaded hole is more than twice of upper ball base and lower ball base length.
- 6. closure sliding bush apparatus in underground hydraulic pressure according to claim 1, it is characterised in that：The shearing outer barrel is one It is internally provided with annular groove, wall is equipped with second flow channel hole, both ends are equipped with the smooth double male joint of screw thread, endoporus；Shear on outer barrel The bottom of end screw thread is equipped with a circle and cuts off hole, is cut off to install sliding sleeve；Shear lower end and the ball valve outer barrel thread seal of outer barrel Connection, the outer tube surface of endoporus and sliding sleeve axis is clearance fit, and can pass through sliding sleeve axis, and sliding sleeve axis is being sheared in outer barrel Lower activity is flexibly.
- 7. closure sliding bush apparatus in underground hydraulic pressure according to claim 1, it is characterised in that：The sliding sleeve outer barrel is one Both ends are equipped with screw thread, middle part tube wall is equipped with the smooth double female pipe nipples of second flow channel hole, endoporus, the lower end screw thread of sliding sleeve outer barrel with The threaded upper ends connection of outer barrel is sheared, the outer tube surface of its endoporus and sliding sleeve axis is clearance fit；Limited after the installation of sliding sleeve outer barrel Sliding sleeve cuts off the freedom cut off with ball seat, meanwhile, snap ring is compressed to the state close with the outer tube surface of sliding sleeve axis, enables snap ring It is enough smoothly to enter in the endoporus of shearing outer barrel downwards.
- 8. closure sliding bush apparatus in underground hydraulic pressure according to claim 4, it is characterised in that：The snap ring, which is one, to be had The unilateral trapezoid-shaped openings ring of elasticity, the trapezoidal side of snap ring is on lower right-angle side, to facilitate the endoporus for smoothly entering shearing outer barrel 11； Snap ring cannot relatively move in the card slot on sliding sleeve axis between sliding sleeve axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162153.1U CN207315304U (en) | 2017-09-12 | 2017-09-12 | Closure sliding bush apparatus in underground hydraulic pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721162153.1U CN207315304U (en) | 2017-09-12 | 2017-09-12 | Closure sliding bush apparatus in underground hydraulic pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207315304U true CN207315304U (en) | 2018-05-04 |
Family
ID=62386587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721162153.1U Active CN207315304U (en) | 2017-09-12 | 2017-09-12 | Closure sliding bush apparatus in underground hydraulic pressure |
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| Country | Link |
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| CN (1) | CN207315304U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905423A (en) * | 2019-12-18 | 2020-03-24 | 西南石油大学 | Double-gradient drilling string safety control device without marine riser |
| CN112780227A (en) * | 2021-02-20 | 2021-05-11 | 中海油能源发展股份有限公司 | Infinite-stage well cementation sliding sleeve for preventing cement solidification and assembling and operating method thereof |
| CN114809987A (en) * | 2021-12-15 | 2022-07-29 | 中国海洋石油集团有限公司 | Sealing and shearing ball valve for deep water |
-
2017
- 2017-09-12 CN CN201721162153.1U patent/CN207315304U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110905423A (en) * | 2019-12-18 | 2020-03-24 | 西南石油大学 | Double-gradient drilling string safety control device without marine riser |
| CN112780227A (en) * | 2021-02-20 | 2021-05-11 | 中海油能源发展股份有限公司 | Infinite-stage well cementation sliding sleeve for preventing cement solidification and assembling and operating method thereof |
| CN114809987A (en) * | 2021-12-15 | 2022-07-29 | 中国海洋石油集团有限公司 | Sealing and shearing ball valve for deep water |
| CN114809987B (en) * | 2021-12-15 | 2023-07-18 | 中国海洋石油集团有限公司 | Sealing shearing ball valve for deep water |
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