CN206571462U - A kind of Multifunctional underwell valve - Google Patents
A kind of Multifunctional underwell valve Download PDFInfo
- Publication number
- CN206571462U CN206571462U CN201720165137.1U CN201720165137U CN206571462U CN 206571462 U CN206571462 U CN 206571462U CN 201720165137 U CN201720165137 U CN 201720165137U CN 206571462 U CN206571462 U CN 206571462U
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- China
- Prior art keywords
- piston
- shear pin
- valve
- valve body
- ball seat
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- Expired - Fee Related
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a kind of Multifunctional underwell valve, is sealed and can realize quickly for sour operation for carrying out counter test during oil, gas and water well construction to packer.The utility model includes piston and valve body, the body of central tube is connected provided with fluid course, top and top connection, the two ends of piston are connected with interior ball seat and central tube respectively by ball seat shear pin and piston shear pin, and valve body is fixed on the bottom of central tube, the fluid course blocked on body by valve body shear pin.The utility model can simultaneously be realized in the well acidizing construction of layer locating depth and formation absorption poor performance and test envelope and for acid operation, it is ensured that the sealing of packer, reduce construction risk, improve efficiency of construction to the acidifying tubing string with packer.The utility model is simple in construction, easy to use, it is to avoid the future trouble that prior art can not be brought to testing seal about packer and pollution stratum, using effect significantly, with significant economic benefit.
Description
Technical field
The utility model belongs to petroleum industry underground operation tool, particularly a kind of Multifunctional underwell valve, for oil, gas,
Counter test is carried out during water well drilling to packer to seal and can realize quickly for sour operation.
Background technology
Acidizing treatment is the conventional process of oil-gas Layer transformation, and its method is to squeeze into acid solution to stratum, by acid solution and stratum
Chemical reaction between Cucumber forms hole, improves stratum negotiability, realizes and improves Oil ＆ Gas Productivity.Existing method is：
1st, by being set under packer near target zone to isolate damage of the high-pressure fluid to sleeve pipe and wellhead assembly, then from oil pipe injection
Acid solution is constructed to stratum.The problem of existing be：Many wells are weaker because of well relatively depth or stratum imbibition ability itself, and acid solution is squeezed into
Need well liquid within the cartridge being extruded into stratum in advance before stratum, cause the engineering time to spin out, add difficulty of construction and risk, and
Stratum is polluted, is negatively affected to subsequent production.2nd, packer top connects and sat afterwards in place under normally open valve, instrument
Sealed packer, for acid, pitching close normally open valve, carry out acidizing treatment.Quickly replaced though this method can be realized into acid solution, can not be right
The sealing effectiveness of packer is verified, once packer setting will sternly not bring more serious consequence.
The content of the invention
The purpose of this utility model is to provide a kind of Multifunctional underwell valve, overcomes current layer locating depth and formation absorption poor performance
Well in acidizing treatment, the acidifying tubing string with packer can not be realized simultaneously test envelope, for acid operation the problem of, reduction is applied
Work risk, raising efficiency of construction.
Technical solution of the present utility model is：A kind of Multifunctional underwell valve includes piston and valve body, the pipe of central tube
Body is connected provided with fluid course, top and top connection, the two ends of piston by ball seat shear pin and piston shear pin respectively with interior ball
Seat and central tube connection, valve body are fixed on the bottom of central tube, the fluid course blocked on body by valve body shear pin.
Compared with prior art, notable using effect of the present utility model is：The utility model can in layer locating depth and
In the well acidizing construction of formation absorption poor performance, the acidifying tubing string with packer can simultaneously be realized and test envelope and for acid behaviour
Make, it is ensured that the sealing of packer, reduce construction risk, improve efficiency of construction.The utility model is simple in construction, uses
It is convenient, it is to avoid the future trouble that prior art can not be brought to testing seal about packer and pollution stratum, using effect significantly, with notable
Economic benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing, not limited the scope of the invention, all designs using the present invention are thought
The improvement that rood goes out belongs to the protection category of the present invention.
Referring to Fig. 1, a kind of Multifunctional underwell valve includes piston 6 and valve body 9, the body of central tube 7 provided with fluid course,
Top is connected with top connection 1, and the two ends of piston 6 are connected with interior ball seat 3 and central tube 7 respectively by ball seat shear pin 4 and piston shear pin 8
Connect, valve body 9 is fixed on the bottom of central tube 7, the fluid course blocked on body by valve body shear pin 11.
The bottom of the top connection 1 is cylindrical to be threadedly coupled with protective case 2, and the internal diameter of the protective case 2 is more than the outer of valve body 9
Footpath, valve body 9 upper and lower in protective case 2 can be moved freely, and protective case 2 can be played during this instrument is gone into the well to valve body 9
Protective effect, prevents colliding with to valve body 9.
The bottom of the central tube 7 is cylindrical to be connected provided with screw thread with oil pipe or packer, piston above the body of central tube 7
Top of the lower section inner circle in shear pin hole provided with the anti-fall step of piston, piston shear pin hole is cylindrical to be affiliated to step, liquid circulation provided with valve body
Road is located on the body below piston shear pin hole.
The top point of the both sides in the interior ball seat shear pin hole of the piston 6, the lower section in piston shear pin hole and valve body shear pin hole
Not She You piston packing 5 and valve seals 10, the top of interior ball seat 3 is cylindrical also to be provided with sealing ring between piston 6.
The interior ball seat 3 be cylindrical body, upper end inner circle provided with interior chamfering with input ball sealer be engaged, its underpart cylinder
It is provided with pilot hole,Ball seat 3 is assembled in convenient.
The shear strength of the ball seat shear pin 4 is more than the shear strength of piston shear pin 8.
Application method of the present utility model is for example following：
1st, this instrument is connected to by detail design requirement and requires position G.I.H, in design attitude set packer,
Suppressed in oil jacket annular space to packer carry out it is counter test envelope, i.e., suppressed out of sleeve pipe, inspection packer sealing situation.
2nd, suppressed after testing seal about packer is qualified out of oil pipe, under pressure, valve body 9 produces axial thrust and cuts valve body
Up after shear pin 11, the fluid course on central tube 7 is opened, by acid solution Rapid Circulation to shaft bottom.
3rd, acid solution is replaced to after shaft bottom, and ball sealer is put into out of oil pipe and is fallen on interior ball seat 3.Suppressed by oil pipe, interior ball seat 3
Produce descending power to be delivered on piston shear pin 8 and cut piston shear pin 8, interior ball seat 3 is with piston 6 while descending, closing center's pipe 7
Fluid course.
4th, pressure continues to raise, and cuts interior ball seat shear pin 4, ball sealer and piston fall into shaft bottom, oil pipe and combination of zones,
Acid solution squeezes into stratum under pump function, realizes acidizing treatment.
The embodiment described above is only exemplary embodiments, but the present invention is not limited only to these embodiments, this area
Technical staff can make modification under without departing from the spirit of the present invention and enlightenment.Aspect disclosed herein there may be a lot
Change, combination and modification, and be within, therefore, protection domain is not limited only to explanation above.
Claims (6)
1. a kind of Multifunctional underwell valve, including piston and valve body, it is characterized in that, the body of central tube provided with fluid course, on
Portion is connected with top connection, and the two ends of piston are connected with interior ball seat and central tube respectively by ball seat shear pin and piston shear pin, valve body
The bottom of central tube, the fluid course blocked on body are fixed on by valve body shear pin.
2. a kind of Multifunctional underwell valve as claimed in claim 1, it is characterized in that, the bottom of the top connection is cylindrical and protective case
Threaded connection, the internal diameter of the protective case is more than the external diameter of valve body, and valve body upper and lower in protective case can be moved freely.
3. a kind of Multifunctional underwell valve as claimed in claim 2, it is characterized in that, the bottom of the central tube is cylindrical to be provided with screw thread
It is connected with oil pipe or packer, the lower section inner circle in piston shear pin hole is provided with the anti-fall step of piston, piston above the body of central tube
The top in shear pin hole is cylindrical to be affiliated to step provided with valve body, and fluid course is located on the body below piston shear pin hole.
4. a kind of Multifunctional underwell valve as claimed in claim 3, it is characterized in that, the two of the interior ball seat shear pin hole of the piston
Piston packing and valve seals, interior ball seat are respectively equipped with above side, the lower section in piston shear pin hole and valve body shear pin hole
Top cylindrical sealing ring also is provided between piston.
5. a kind of Multifunctional underwell valve as claimed in claim 2, it is characterized in that, the interior ball seat is cylindrical body, upper end inner circle
It is engaged provided with interior chamfering with the ball sealer put into, its underpart cylinder is provided with pilot hole.
6. a kind of Multifunctional underwell valve as claimed in claim 1, it is characterized in that, the shear strength of the ball seat shear pin is more than piston
The shear strength of shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720165137.1U CN206571462U (en) | 2017-02-23 | 2017-02-23 | A kind of Multifunctional underwell valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720165137.1U CN206571462U (en) | 2017-02-23 | 2017-02-23 | A kind of Multifunctional underwell valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206571462U true CN206571462U (en) | 2017-10-20 |
Family
ID=60059657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720165137.1U Expired - Fee Related CN206571462U (en) | 2017-02-23 | 2017-02-23 | A kind of Multifunctional underwell valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206571462U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388192A (en) * | 2019-08-15 | 2019-10-29 | 东营宏博石油装备有限公司 | A kind of retrievable tubing plug |
| CN111101895A (en) * | 2020-01-10 | 2020-05-05 | 兰西县铭远石油设备制造有限公司 | Underground multilayer seat pressure one-way plugging type switch |
| CN117231167A (en) * | 2023-11-09 | 2023-12-15 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
-
2017
- 2017-02-23 CN CN201720165137.1U patent/CN206571462U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388192A (en) * | 2019-08-15 | 2019-10-29 | 东营宏博石油装备有限公司 | A kind of retrievable tubing plug |
| CN111101895A (en) * | 2020-01-10 | 2020-05-05 | 兰西县铭远石油设备制造有限公司 | Underground multilayer seat pressure one-way plugging type switch |
| CN117231167A (en) * | 2023-11-09 | 2023-12-15 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
| CN117231167B (en) * | 2023-11-09 | 2024-02-02 | 四川圣诺油气工程技术服务有限公司 | Releasing structure of acid liquid dumping cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 Termination date: 20200223 |
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| CF01 | Termination of patent right due to non-payment of annual fee |