CN206554878U - Pressure relief device - Google Patents
Pressure relief device Download PDFInfo
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- CN206554878U CN206554878U CN201720184514.6U CN201720184514U CN206554878U CN 206554878 U CN206554878 U CN 206554878U CN 201720184514 U CN201720184514 U CN 201720184514U CN 206554878 U CN206554878 U CN 206554878U
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- sliding sleeve
- shear pin
- hole
- pressure relief
- relief device
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- 238000007789 sealing Methods 0.000 claims description 40
- 238000010030 laminating Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a pressure relief device belongs to oil gas field development field. The pressure relief device comprises: the outer barrel, the first sliding sleeve, the second sliding sleeve, the closing shear pin and the pressure relief shear pin, wherein when the pressure relief shear pin is not sheared, the outer wall of the second sliding sleeve seals the second through hole; when the pressure release shear pin is cut off, the second sliding sleeve glides down to make the second through hole and the lumen intercommunication in the urceolus, specifically can set up the pressure release pressure size in advance according to the well condition for the pressure release process is safe controllable, when the pressure release shear pin is cut off and the shear pin is cut off to close, first sliding sleeve glides down and seals the second through hole, realize the resealing of tubular column after the pressure release, and simultaneously, the device can realize going into the well again through changing the shear pin and use after the construction, saves the exploitation cost.
Description
Technical field
The utility model is related to oil-gas field development field, more particularly to a kind of pressure relief device.
Background technology
Pressure relief device is that commonly used one kind can make to connect with oil jacket annular space inside tubing string in underground work, is made inside tubing string
Fluid flows out, the device that overpressure declines.Pressure relief device reliably pressure release can play vital effect to construction quality.
Current pressure relief device has caber formula and fluid pressure type.
During the utility model is realized, designer has found that prior art at least has problems with：
For caber formula pressure relief device, horizontal well needs the multiple pressure relief devices of tripping in realize full pit shaft pressure release, and well
The problem of just easily there is pressure release failure if any wax deposition, fouling or viscous crude in cylinder, now pressure release post accurately can not be pounded disconnected by caber, and
Pressure relief tool can not realize that tubing string is closed again as needed after pressure release；For fluid pressure type pressure relief device, the device can not be right
Vent pressure size is controlled, and borehole pressure is likely to result in pressure release in advance or pressure release by mistake if any fluctuation, while tubing string after pressure release
It can not realize and be again sealed off.
Utility model content
In consideration of it, the utility model provides a kind of pressure relief device, let out for ensureing the safe and reliable of pressure release work, and realizing
Tubing string is again sealed off after pressure.
A kind of pressure relief device, the pressure relief device includes：Outer barrel, the first sliding sleeve, the second sliding sleeve, closing shear pin and pressure release are cut
Nail, wherein,
The barrel of the outer barrel offers first through hole, the second through hole and the third through-hole through barrel, and described second leads to
The position height of hole and the third through-hole is less than the position height of the first through hole；
The outside of first sliding sleeve is provided with the first shear pin groove, and the first through hole is run through simultaneously in one end of the closing shear pin
Into the first shear pin groove；
The outside of second sliding sleeve is provided with the second shear pin groove, and the third through-hole is run through simultaneously in one end of the pressure release shear pin
Into the second shear pin groove；
When the pressure release shear pin is not cut, the outer wall of second sliding sleeve seals second through hole；Let out described
Compression shear nail is when being cut, second sliding sleeve slides downwards and second through hole is connected with the tube chamber in the outer barrel；
When the pressure release shear pin is cut and the closing shear pin is cut, first sliding sleeve slides downwards and seal described
Second through hole.
Further, the pressure relief device also includes being provided with the first seal groove on the outside of the first sealing ring, first sliding sleeve,
First sealing ring is suitable to coordinate with first seal groove.
Further, the pressure relief device also includes the second sealing ring, and the position height of second sealing ring is less than institute
State and the second seal groove is provided with the outside of the position height of the first sealing ring, second sliding sleeve, second sealing ring is suitable to and institute
State the cooperation of the second seal groove.
Further, the pressure relief device also includes the 3rd sealing ring, and the position height of the 3rd sealing ring is less than institute
State and the 3rd seal groove is provided with the outside of the position height of the second sealing ring, second sliding sleeve, the 3rd sealing ring is suitable to and institute
State the cooperation of the 3rd seal groove.
Further, the pressure relief device also includes pin, and second sliding sleeve is provided with pin hole, and the outer barrel is offered
Chute, one end of the pin enters the pin hole, and the other end of the pin is located in the chute.
Further, external screw thread is provided with lower end outside on the outside of the upper end of the outer barrel, the external screw thread is suitable to and oil pipe
The screw-internal thread fit of inwall.
Further, the pressure relief device also include the first solvable ball and the second solvable ball, the first solvable ball it is big
Small to be suitable to push first sliding sleeve and cut the closing shear pin, being sized for of the second solvable ball pushes described second
Sliding sleeve and cut the pressure release shear pin.
Further, the radius of the described first solvable ball is more than the described second solvable ball.
Further, the lower end of first sliding sleeve is fitted with the outer tube inner wall, the upper end of second sliding sleeve and institute
State and sliding sleeve groove is provided between outer tube inner wall, the lower end of first sliding sleeve is adapted to enter into the sliding sleeve groove.
The beneficial effect of technical scheme that the utility model embodiment is provided is：
Pressure relief device of the present utility model, including outer barrel, the first sliding sleeve, the second sliding sleeve, closing shear pin, pressure release shear pin, outside
The barrel of cylinder offers the position of first through hole, the second through hole and the third through-hole through barrel, the second through hole and third through-hole
Highly it is less than the position height of first through hole, the outside of the first sliding sleeve is provided with the first shear pin groove, closes one end of shear pin through the
One through hole simultaneously enters the first shear pin groove, and the outside of the second sliding sleeve is provided with the second shear pin groove, and threeway is run through in one end of pressure release shear pin
Hole simultaneously enters the second shear pin groove, and when pressure release shear pin is not cut, the outer wall of the second sliding sleeve seals the second through hole；In pressure release shear pin
When being cut, the second sliding sleeve slides downwards and the second through hole is connected with the tube chamber in outer barrel, specifically can in advance be set according to hole condition
Vent pressure size so that pressure leak process is safely controllable, when being cut in pressure release shear pin and closing shear pin and cut, the first sliding sleeve
Glide and seal the second through hole, realize being again sealed off for tubing string after pressure release, meanwhile, the device passes through and changed after construction terminates
Shear pin is that can be achieved to go into the well again to use, and saves cost of winning.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 enters well view for pressure relief device；
Fig. 2 is the open mode schematic diagram of pressure relief device；
Fig. 3 is the closed mode schematic diagram of pressure relief device；
Fig. 4 is pressure relief device view after the solvable ball dissolving of pressure relief device.
Reference in figure is represented respectively：
1st, outer barrel；2nd, the first sliding sleeve；3rd, the first sealing ring；4th, shear pin is closed；5th, the second sealing ring；6th, the second sliding sleeve；7、
Second through hole；8th, pin；9th, pressure release pin；10th, chute；11st, the 3rd sealing ring；12nd, the second solvable ball；13rd, the first solvable ball.
Embodiment
To make the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with accompanying drawing
Mode is described in further detail.
The utility model embodiment provides a kind of pressure relief device, and it includes outer barrel 1, the first sliding sleeve 2, the second sliding sleeve 6, pass
Close shear pin 4 and pressure release shear pin 9.
Specifically, the barrel of outer barrel 1 offers first through hole, the second through hole 7 and the third through-hole through barrel, and second leads to
The position height of hole 7 and third through-hole is less than the position height of first through hole, and the outside of the first sliding sleeve 2 is provided with the first shear pin groove,
One end of shear pin 4 is closed through first through hole and enters the first shear pin groove, using closing shear pin 4 so that the first sliding sleeve 2 and outer barrel 1
Fixed, the outside of the second sliding sleeve 6 is provided with the second shear pin groove, and one end of pressure release shear pin 9 runs through third through-hole and enters the second shear pin
Groove, causes the second sliding sleeve 6 to be fixed with outer barrel 1 using pressure release shear pin 9.
Wherein, the lower end of the first sliding sleeve 2 is fitted with the inwall of outer barrel 1, is set between the upper end of the second sliding sleeve 2 and the inwall of outer barrel 1
There is sliding sleeve groove, the lower end of the first sliding sleeve 2 is adapted to enter into sliding sleeve groove.
When pressure release shear pin 9 is not cut, as shown in figure 1, the outer wall of the second sliding sleeve 6 seals the second through hole 7；Cut in pressure release
When nail 9 is cut, as shown in Fig. 2 the second sliding sleeve 6 glides and the second through hole 7 is connected with the tube chamber in outer barrel 1；If 3 institutes
Show, when being cut in pressure release shear pin 9 and closing shear pin 4 and cut, the first sliding sleeve 2 glides and seals the second through hole 7.
Therefore, the utility model embodiment is cut using outer barrel 1, the first sliding sleeve 2, the second sliding sleeve 6, closing shear pin 4 and pressure release
Nail 9, constitutes a kind of pressure relief device, for setting vent pressure size in advance according to hole condition so that pressure leak process is safely controllable
It is again sealed off with tubing string after pressure release, meanwhile, the device can be achieved to go into the well again to make after construction terminates by changing shear pin
With saving cost of winning.
In order to which the function of pressure relief device is better achieved, pressure relief device also includes the first sealing ring 3, the outside of the first sliding sleeve 2
Provided with the first seal groove, the first sealing ring 3 is suitable to coordinate with the first seal groove, realizes close between the first sealing ring 3 and outer barrel 1
Envelope；Pressure relief device also includes the second sealing ring 5, and the position height of the second sealing ring 5 is less than the position height of the first sealing ring 3,
The outside of second sliding sleeve 6 is provided with the second seal groove, and the second sealing ring 5 is suitable to coordinate with the second seal groove, realizes the second sliding sleeve 6 and the
Sealing between one sliding sleeve 2；Pressure relief device also includes the 3rd sealing ring 11, and the position height of the 3rd sealing ring 11 is close less than second
The position height of seal 5, the outside of the second sliding sleeve 6 is provided with the 3rd seal groove, and the 3rd sealing ring 11 is suitable to coordinate with the 3rd seal groove,
Realize the sealing between the second sliding sleeve 6 and outer barrel 1；Pressure relief device also includes pin 8, and the second sliding sleeve 2 is provided with pin hole, outer barrel 1
Chute 10 is offered, one end of pin 8 enters pin hole, and the other end of pin 8 is located in chute 10, determined by chute 10
The downslide scope of second sliding sleeve 6.
Meanwhile, pressure relief device also includes the first solvable ball 12 of solvable ball 13 and second, and the first solvable ball 13 is sized for
Push the first sliding sleeve 2 and cut and close shear pin 4, being sized for of the second solvable ball 12 pushes the second sliding sleeve 6 and cut pressure release and cut
Nail 9, the sealing of the first sliding sleeve 2 is realized in the tripping in of the first solvable ball 13, and the close of the second sliding sleeve 6 is realized in the tripping in of the second solvable ball 12
Envelope, the radius of the first solvable ball 13 is more than the second solvable ball 12.
For the pressure relief device, on the outside of the upper end of outer barrel 1 and lower end outside is provided with external screw thread, external screw thread be suitable to in oil pipe
The screw-internal thread fit of wall so that pressure relief device is connected with oil pipe.
In actual use, it is connected by the external screw thread of the upper end of outer barrel 1 with oil pipe in lower going-into-well, the lower end of outer barrel 1
Can connected pipes or other instruments, tubing string reached when needing to carry out pressure release to tubing string during precalculated position or construction operation,
The first solvable ball 12 is put into, while injecting fluid so that the first solvable ball 12 is reached at the second sliding sleeve 6, as shown in Fig. 2 when pipe
When post fluid pressure reaches certain value, pressure release shear pin 9 is cut, the second sliding sleeve 6, the first solvable ball 12 and pin 8 together to
Under move to the bottom of chute 10, now chamber inside and outside oil pipe is realized oil pipe pressure release by the second through hole 7；In pressure release knot
, it is necessary to will be resealed inside tubing string after beam, the first solvable ball 13 is put into, and injects fluid, the first solvable ball 13 reaches first
At sliding sleeve 2, cut as shown in figure 3, closing shear pin 4 when pressure reaches certain value in tubing string, the second solvable ball 13 and first
Sliding sleeve 2 is moved downwardly together so that the lower end of the first sliding sleeve 2 is again introduced into sliding sleeve groove, and realizes tubing string by the second sealing ring 5
The first solvable ball 12 of solvable ball 13 and second dissolves after sealing, a period of time, and tubing string inner passage is unimpeded, as shown in figure 4, tubing string
Inside configuration is realized and closed again.
The pressure relief device of the utility model embodiment, including outer barrel, the first sliding sleeve, the second sliding sleeve, close shear pin, pressure release and cut
Nail, the barrel of outer barrel offers first through hole, the second through hole and third through-hole through barrel, the second through hole and third through-hole
Position height is less than the position height of first through hole, and the outside of the first sliding sleeve is provided with the first shear pin groove, and the one end for closing shear pin is passed through
Wear first through hole and enter the first shear pin groove, the outside of the second sliding sleeve is provided with the second shear pin groove, one end of pressure release shear pin is through the
Three through holes simultaneously enter the second shear pin groove, and when pressure release shear pin is not cut, the outer wall of the second sliding sleeve seals the second through hole；In pressure release
When shear pin is cut, the second sliding sleeve slides downwards and the second through hole is connected with the tube chamber in outer barrel, can specifically be shifted to an earlier date according to hole condition
Vent pressure size is set so that pressure leak process is safely controllable, when being cut in pressure release shear pin and closing shear pin and cut, first
Sliding sleeve slides downwards and seal the second through hole, realize being again sealed off for tubing string after pressure release, meanwhile, the device passes through after construction terminates
It is that can be achieved to go into the well again to use to change shear pin, saves cost of winning.
It is described above to be for only for ease of it will be understood by those skilled in the art that the technical solution of the utility model, is not used to
Limit the utility model.It is all it is of the present utility model spirit and principle within, any modification, equivalent substitution and improvements made etc.,
It should be included within protection domain of the present utility model.
Claims (9)
1. a kind of pressure relief device, it is characterised in that the pressure relief device includes：Outer barrel, the first sliding sleeve, the second sliding sleeve, closing are cut
Nail and pressure release shear pin, wherein,
The barrel of the outer barrel offers first through hole, the second through hole and the third through-hole through barrel, second through hole and
The position height of the third through-hole is less than the position height of the first through hole；
The outside of first sliding sleeve is provided with the first shear pin groove, and one end of the closing shear pin is run through the first through hole and entered
The first shear pin groove；
The outside of second sliding sleeve is provided with the second shear pin groove, and one end of the pressure release shear pin is run through the third through-hole and entered
The second shear pin groove；
When the pressure release shear pin is not cut, the outer wall of second sliding sleeve seals second through hole；Cut in the pressure release
Nail is when being cut, second sliding sleeve slides downwards and second through hole is connected with the tube chamber in the outer barrel；
The pressure release shear pin cut and it is described closing shear pin cut when, first sliding sleeve slides downwards and seal described second
Through hole.
2. pressure relief device according to claim 1, it is characterised in that the pressure relief device also includes the first sealing ring, institute
State and the first seal groove is provided with the outside of the first sliding sleeve, first sealing ring is suitable to coordinate with first seal groove.
3. pressure relief device according to claim 2, it is characterised in that the pressure relief device also includes the second sealing ring, institute
The position height for stating the second sealing ring is less than the position height of first sealing ring, and the second sliding sleeve outside is close provided with second
Sealing groove, second sealing ring is suitable to coordinate with second seal groove.
4. pressure relief device according to claim 3, it is characterised in that the pressure relief device also includes the 3rd sealing ring, institute
The position height for stating the 3rd sealing ring is less than the position height of second sealing ring, and the second sliding sleeve outside is close provided with the 3rd
Sealing groove, the 3rd sealing ring is suitable to coordinate with the 3rd seal groove.
5. pressure relief device according to claim 1, it is characterised in that the pressure relief device also includes pin, described second
Sliding sleeve is provided with pin hole, and the outer barrel offers chute, and one end of the pin enters the pin hole, the pin it is another
End is located in the chute.
6. pressure relief device according to claim 1, it is characterised in that be provided with the outside of the upper end of the outer barrel with lower end outside
External screw thread, the external screw thread is suitable to the screw-internal thread fit with tube inner wall.
7. pressure relief device according to claim 1, it is characterised in that the pressure relief device also includes the first solvable ball and the
Two solvable balls, being sized for of the first solvable ball pushes first sliding sleeve and cuts the closing shear pin, and described second
Being sized for of solvable ball pushes second sliding sleeve and cuts the pressure release shear pin.
8. pressure relief device according to claim 7, it is characterised in that the radius of the first solvable ball is more than described second
Solvable ball.
9. pressure relief device according to claim 1, it is characterised in that the lower end of first sliding sleeve and the outer tube inner wall
Laminating, is provided with sliding sleeve groove between the upper end of second sliding sleeve and the outer tube inner wall, the lower end of first sliding sleeve be suitable into
Enter the sliding sleeve groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184514.6U CN206554878U (en) | 2017-02-28 | 2017-02-28 | Pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720184514.6U CN206554878U (en) | 2017-02-28 | 2017-02-28 | Pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206554878U true CN206554878U (en) | 2017-10-13 |
Family
ID=60361819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720184514.6U Active CN206554878U (en) | 2017-02-28 | 2017-02-28 | Pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206554878U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412458A (en) * | 2018-03-16 | 2018-08-17 | 中国海洋石油集团有限公司 | The two-way controllable deep water annular space trapped pressure pressure relief device of one kind and method |
| CN110905447A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Underground switch device |
-
2017
- 2017-02-28 CN CN201720184514.6U patent/CN206554878U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412458A (en) * | 2018-03-16 | 2018-08-17 | 中国海洋石油集团有限公司 | The two-way controllable deep water annular space trapped pressure pressure relief device of one kind and method |
| CN108412458B (en) * | 2018-03-16 | 2023-06-30 | 中国海洋石油集团有限公司 | Bidirectional controllable deepwater annular trap pressure relief device and method |
| CN110905447A (en) * | 2018-09-18 | 2020-03-24 | 中国石油天然气股份有限公司 | Underground switch device |
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