CN207393176U - A kind of fracturing string constant-pressure opens pressure test tool - Google Patents
A kind of fracturing string constant-pressure opens pressure test tool Download PDFInfo
- Publication number
- CN207393176U CN207393176U CN201721267674.3U CN201721267674U CN207393176U CN 207393176 U CN207393176 U CN 207393176U CN 201721267674 U CN201721267674 U CN 201721267674U CN 207393176 U CN207393176 U CN 207393176U
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- China
- Prior art keywords
- pressure
- sliding sleeve
- test tool
- fracturing string
- string
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 4
- 238000001727 in vivo Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000012797 qualification Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a kind of fracturing string constant-pressure and opens pressure test tool, and including housing, steel ball and arranged on the in vivo sliding sleeve of shell, the sliding sleeve is connected fixation with housing by shear pin, and the sliding sleeve upper end is arranged with sealing ring, and the steel ball seat is in sliding sleeve upper end.The pressure test tool is simple in structure, easy to operate so that can directly carry out next step construction as needed after the completion of fracturing string pressure testing, realize one-trip string and complete pressure testing and pressure break two procedures, substantially reduce operating cost, improve economic benefit.
Description
Technical field
The utility model belongs to underground operation tool technical field, and in particular to a kind of fracturing string constant-pressure opens pressure testing
Instrument.
Background technology
In fracture in oil and water wells work progress, for oil pipe due to quality problems, screw thread damage or torque wrench moment are undesirable
Etc. factors cause screw thread that cannot effectively seal so that fracturing string at screwed connection there are leak source, tubing string be lowered into design position
It postpones due to oil pipe string blow-by, construction requirement can not be met, pressure break is carried out so as to which flowline needed to re-replace new oil pipe
Construction, delays construction period, adds operating cost.In order to improve construction efficiency, verification is needed to press before pressing crack construction operation
Split the leakproofness of tubing string.
Operation field can only individually descend pressure testing tubing string to carry out pressure testing, pressure testing to check the leakproofness of fracturing string at present
Fracturing tubing string again after qualification, tubing string twice under this inspection method needs significantly increase the labor intensity of worker, and
Pressure testing tubing string is asynchronous with fracturing string, and there may be not tight or slops on oil pipe during fracturing operating tool string
Pipe is gone into the well, and is caused the leakproofness of fracturing string and can not be verified.
Utility model content
The purpose of the utility model is to overcome existing pressure testing tubing string is asynchronous with pressing crack construction tubing string, cause fracturing string
Leakproofness the technical issues of can not verifying.
For this purpose, the utility model, which provides a kind of fracturing string constant-pressure, opens pressure test tool, including housing, steel ball and set
In the in vivo sliding sleeve of shell, the sliding sleeve is connected fixation with housing by shear pin, and the sliding sleeve upper end is arranged with sealing ring, the steel
Ball seat is in sliding sleeve upper end.
The sliding sleeve upper end is equipped with chamfering.
The upper inner diameter of the chamfering is more than the diameter of steel ball, and lower inner diameter is less than the diameter of steel ball.
The housing upper is equipped with screw thread.
The shear pin is uniformly arranged in the circumferential direction multiple.
The beneficial effects of the utility model are：
This fracturing string constant-pressure provided by the utility model opens pressure test tool, solves existing pressure testing tubing string and pressure
The nonsynchronous problem of operating tool string is split, next step pressing crack construction can be directly carried out as needed after pipe string pressure test qualification, without
Operating tool string is descended again, reduces labor strength, is reduced production cost, is improved construction efficiency.
Tool construction is simple, easy to operate so that can directly be carried out as needed after the completion of fracturing string pressure testing next
Step construction realizes one-trip string and completes pressure testing and pressure break two procedures, substantially reduces operating cost, improve economic benefit.
Meanwhile can effectively verify the sealing performance of fracturing string, and ensure that fracturing string can be steady under the pressure of 25MPa or so
Pressure opens sliding sleeve under the pressure of 35MPa or so, ensures subsequent construction.
It is described in further details below in conjunction with attached drawing.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
In figure：1st, housing；2nd, steel ball；3rd, gasket；4th, shear pin；5th, sliding sleeve；6th, chamfering.
Specific embodiment
Embodiment 1：
In order to overcome existing pressure testing tubing string asynchronous with pressing crack construction tubing string, cause the leakproofness of fracturing string can not test
The technical issues of card, present embodiments provides a kind of fracturing string constant-pressure and opens pressure test tool, including housing 1, steel ball 2 and sets
In the sliding sleeve 5 in housing 1, the sliding sleeve 5 is connected fixation with housing 1 by shear pin 4, and 5 upper end of sliding sleeve is arranged with sealing ring,
The steel ball 2 is in 5 upper end of sliding sleeve.
It is required during onsite application according to detail design, the present embodiment pressure test tool is connected to design of string pipe position or pipe
Column bottom.When fracturing string needs pressure testing, steel ball 2 is put into from well head, when steel ball 2 is located on pressure test tool sliding sleeve 5,
Steel ball 2, sealing ring and sliding sleeve 5 ensure that tubing string upper channel is closed, and can carry out pressure testing to fracturing string at this time.
25MPa is forced into fracturing string from well head, voltage stabilizing is carried out, it is specified that time internal drop according to pipe string pressure test standard
Less than pressure testing standard, then fracturing string favorable sealing property is proved.Continue to be forced into 35MPa or so into fracturing string, act on
When the shear stress of shear pin on pressure test tool 4 is more than its setting value, shear pin 4 is cut, and sliding sleeve 5 and steel ball 2 fall out of tubing string
Fall.Latus rectum recovers in tubing string, can directly carry out next step pressing crack construction as needed.
Embodiment 2：
On the basis of embodiment 1, present embodiments provide a kind of fracturing string constant-pressure as shown in Figure 1 and open pressure testing
Instrument, 5 upper end of sliding sleeve are equipped with chamfering 6.The upper inner diameter of the chamfering 6 is more than the diameter of steel ball 2, and lower inner diameter is less than steel
The diameter of ball 2.1 top of housing is equipped with screw thread.
As shown in Figure 1,1 top of housing is equipped with the screw thread being connected with oil pipe string, 1 lower end of housing is equipped with and is uniformly arranged in the circumferential direction
4 hole of shear pin, 5 upper end of sliding sleeve be equipped with sealing ring, lower end be equipped with 1 shear pin of housing, the 4 corresponding hole in hole, there is chamfering in internal diameter upper end
6；Sliding sleeve 5 is mounted in housing 1, is connected and fixed by shear pin 4.
In the present embodiment, the shear pin 4 is uniformly arranged in the circumferential direction multiple.
In conclusion this fracturing string constant-pressure provided by the utility model opens pressure test tool, existing examination is solved
Pressure pipe column and pressing crack construction tubing string nonsynchronous problem can directly carry out next step pressure break after pipe string pressure test qualification as needed
Construction without descending operating tool string again, reduces labor strength, reduces production cost, improve construction efficiency.
The pressure test tool is simple in structure, easy to operate so that after the completion of fracturing string pressure testing can as needed directly into
Row is constructed in next step, is realized one-trip string and is completed pressure testing and pressure break two procedures, substantially reduces operating cost, improve economy
Benefit.
Above example belongs to the common knowledge and known technology of the art without the part of specific descriptions, herein
No longer it is described in detail one by one.
Exemplified as above is only for example, not forming to the scope of protection of the utility model to the utility model
Limitation, within every design the same or similar with the utility model all belongs to the scope of protection of the present invention.
Claims (5)
1. a kind of fracturing string constant-pressure opens pressure test tool, it is characterised in that：Including housing（1）, steel ball（2）With arranged on housing
（1）Interior sliding sleeve（5）, the sliding sleeve（5）Pass through shear pin（4）With housing（1）Connection is fixed, the sliding sleeve（5）Upper end is arranged with
Sealing ring, the steel ball（2）Seat is in sliding sleeve（5）Upper end.
2. a kind of fracturing string constant-pressure according to claim 1 opens pressure test tool, it is characterised in that：The sliding sleeve
（5）Upper end is equipped with chamfering（6）.
3. a kind of fracturing string constant-pressure according to claim 2 opens pressure test tool, it is characterised in that：The chamfering
（6）Upper inner diameter be more than steel ball（2）Diameter, lower inner diameter be less than steel ball（2）Diameter.
4. a kind of fracturing string constant-pressure according to claim 1 opens pressure test tool, it is characterised in that：The housing
（1）Top is equipped with screw thread.
5. a kind of fracturing string constant-pressure according to claim 1 opens pressure test tool, it is characterised in that：The shear pin
（4）It is uniformly arranged in the circumferential direction multiple.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721267674.3U CN207393176U (en) | 2017-09-29 | 2017-09-29 | A kind of fracturing string constant-pressure opens pressure test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721267674.3U CN207393176U (en) | 2017-09-29 | 2017-09-29 | A kind of fracturing string constant-pressure opens pressure test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393176U true CN207393176U (en) | 2018-05-22 |
Family
ID=62330633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721267674.3U Active CN207393176U (en) | 2017-09-29 | 2017-09-29 | A kind of fracturing string constant-pressure opens pressure test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393176U (en) |
-
2017
- 2017-09-29 CN CN201721267674.3U patent/CN207393176U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201103 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. Address before: 710018 Shaanxi province Xi'an Weiyang Changqing Changqing prosperous Park District Building Room 1203 Patentee before: CNPC CHUANQING DRILLING ENGINEERING Co.,Ltd. |