CN107558951A - Hydraulic switch circulating sliding sleeve - Google Patents
Hydraulic switch circulating sliding sleeve Download PDFInfo
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- CN107558951A CN107558951A CN201710908383.6A CN201710908383A CN107558951A CN 107558951 A CN107558951 A CN 107558951A CN 201710908383 A CN201710908383 A CN 201710908383A CN 107558951 A CN107558951 A CN 107558951A
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- piston
- sliding sleeve
- sheath
- spring
- sleeve body
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Abstract
The invention discloses a hydraulic switch circulating sliding sleeve which comprises a sliding sleeve body, a sheath, a piston and a spring, wherein the sheath is connected with the sliding sleeve body, a piston air cavity is formed between the sheath and the sliding sleeve body, the piston and the spring are arranged in the piston air cavity, one end of the spring is fixed at the bottom of the piston air cavity, the other end of the spring is connected with the bottom of the piston, and the piston can slide up and down along the piston air cavity. The invention describedThe annular sliding sleeve can be opened to carry out operations such as circulating well washing and the like in a casing pipe pressing mode, and CO can be continuously injected after the well washing is finished2Or tripping.
Description
Technical field
The present invention relates to one kind to be applied to pressure break and CO2Drive the downhole tool circulation slide sleeve of injection string, and in particular to one
Kind hydraulic selector circulation slide sleeve.
Background technology
In pressure break and CO2Drive in injection process, it is often necessary to carry out the operation such as injecting again after carrying out circulation well cleanup, wherein closing
Key instrument is circulation slide sleeve, and current circulation slide sleeve is primarily present following problem：First, sliding sleeve can only be opened, it is impossible to automatic
Close, because oil pipe has connected with sleeve pipe after circulation, this kind of circulation slide sleeve is further continued for carrying out oil pipe note after not being suitable for circulation
Enter；2nd, tripping in specific purpose tool is needed to open sliding sleeve, such as pitching or using steel wire operation tripping in specific purpose tool, the former have impact on well
Cylinder integrality, the latter have impact on efficiency of construction.
The content of the invention
In order to solve above mentioned problem existing for prior art, the purpose of the present invention is the side that design can be suppressed by sleeve pipe
Formula, open circulation slide sleeve and carry out the operations such as circulation well cleanup, and injection CO can be continued after well-flushing terminates2A kind of or hydraulic pressure to pull out of hole
Switch cycles sliding sleeve.
The technical solution adopted in the present invention is as follows：A kind of hydraulic selector circulation slide sleeve, including sliding sleeve body, sheath, work
Plug, spring, described sheath are connected with sliding sleeve body, and piston air chamber is formed between sheath and sliding sleeve body, described
Piston, spring are placed in piston air intracavitary, and the bottom of piston air chamber, the other end and piston of spring are fixed in one end of spring
Bottom be connected, piston can slide up and down along piston air chamber.
Described top land is fixed on sliding sleeve body by shear pin.
Body port is offered on described sliding sleeve body, sheath port is offered on sheath, when piston holddown spring to
Under when being moved to piston air bottom of chamber portion sheath port connected with body port.
The upper and lower end face that the inner side of described piston is in contact with sliding sleeve body is sealed by the first O-ring seal respectively,
The outside of piston and the contact surface of sheath are sealed by the second O-ring seal.
Described sheath is connected by screw thread with sliding sleeve body.
The upper and lower end face that described sheath is in contact with sliding sleeve body is sealed by sheath O-ring seal respectively.
Beneficial effects of the present invention：
Hydraulic selector circulation slide sleeve of the present invention is applied to CO2Injection string, ring can be found in injection process
After sky protection liquid failure, sliding sleeve is opened by reacting cycle, replaces annular protective liquid, then carry out positive injection, without pulling out of hole；The hydraulic pressure
Switch cycles sliding sleeve is also applied in fracturing string, after reacting cycle de-plugging is carried out after oil pipe sand plug occurs, continues to inject, can
Improve efficiency of construction.
Brief description of the drawings
Fig. 1 the structural representation of present invention.
Description of reference numerals：
1st, sliding sleeve body, 2, body port, 3, sheath, 4, sheath port, 5, shear pin, 6, piston, 7, first is O-shaped close
Seal, the 8, second O-ring seal, 9, piston air chamber, 10, spring, 11, sheath O-ring seal.
Embodiment
Embodiment 1
As shown in figure 1, a kind of hydraulic selector circulation slide sleeve, including sliding sleeve body 1, sheath 3, piston 6, spring 10, it is described
Sheath 3 be connected with sliding sleeve body 1, and piston air chamber 9, described piston 6, bullet are formed between sheath 3 and sliding sleeve body 1
Spring 10 is placed in piston air chamber 9, and the bottom of piston air chamber 9, the other end of spring 10 and work are fixed in one end of spring 10
The bottom of plug 6 is connected, and piston 6 can slide up and down along piston air chamber 9.
The described top of piston 6 is fixed on sliding sleeve body 1 by shear pin 5, and shear pin 5 can go up downslide after cutting
It is dynamic, there is duct on sheath 3 and body 1, be liquid flow path.
When reacting cycle, when casing pressure exceedes initial tension of spring, pin shearing force and oil pressure sum, liquid-driving piston 6 is cut
Disconnected shear pin 5, holddown spring 10, is moved downward to the bottom of piston air chamber 9, now sheath port 4 and body port 2 connect
Logical, liquid can flow into oil pipe from annular space, and after circulation, sleeve pipe pressure release, oil jacket pressure reaches unanimity, in the effect of spring force
Under, promote piston to move up and close sheath port 4 and body port 2, can now continue normally to inject CO2.
Circulation slide sleeve of the present invention can be opened circulation slide sleeve and carry out circulation well cleanup etc. by way of sleeve pipe is suppressed
Operation, and can continue to inject CO2 or trip-out after well-flushing terminates.
Embodiment 2
On the basis of embodiment 1, sheath 3 is connected by screw thread with sliding sleeve body 1, between sheath 3 and sliding sleeve body 1
Piston 6 and spring 10 are installed, piston 6 is fixed on sliding sleeve body by shear pin 5, and piston 6 can after shear pin 5 is cut
Slide up and down, have duct on sheath 3 and sliding sleeve body 1, be liquid flow path.
Body port 2 is offered on described sliding sleeve body 1, sheath port 4 is offered on sheath 3, when piston 6 compresses bullet
Sheath port 4 connects with body port 12 when spring 10 is moved downward to piston air 9 bottom of chamber；When spring affranchises state
When, piston moves up, and sheath port 4 and body port 2 simultaneously close off.
The upper and lower end face that the inner side of described piston 6 is in contact with sliding sleeve body 1 is close by the first O-ring seal 7 respectively
Envelope, the outside of piston 6 is sealed with the contact surface of sheath 3 by the second O-ring seal 8；Described sheath 3 and the phase of sliding sleeve body 1
The upper and lower end face of contact is sealed by sheath O-ring seal 11 respectively.
The hydraulic selector circulation slide sleeve is applied to CO2Injection string, it can find that annular protective liquid loses in injection process
After effect, sliding sleeve is opened by reacting cycle, replaces annular protective liquid, then carry out positive injection, without pulling out of hole；Hydraulic selector circulation is slided
Set is also applied in fracturing string, after reacting cycle de-plugging is carried out after oil pipe sand plug occurs, continues to inject, it is possible to increase construction effect
Rate.
Claims (6)
1. a kind of hydraulic selector circulation slide sleeve, including sliding sleeve body (1), sheath (3), piston (6) and spring (10), its feature exist
In：Described sheath (3) is connected with sliding sleeve body (1), and piston air chamber is formed between sheath (3) and sliding sleeve body (1)
(9), described piston (6), spring (10) are placed in piston air chamber (9), and piston air chamber is fixed in one end of spring (10)
(9) bottom, the other end of spring (10) are connected with the bottom of piston (6), and piston (6) can glide along piston air chamber (9)
It is dynamic.
A kind of 2. hydraulic selector circulation slide sleeve according to claim 1, it is characterised in that：It is logical at the top of described piston (6)
Shear pin (5) is crossed to be fixed on sliding sleeve body (1).
A kind of 3. hydraulic selector circulation slide sleeve according to claim 1, it is characterised in that：On described sliding sleeve body (1)
Body port (2) is offered, sheath port (4) is offered on sheath (3), when piston (6) holddown spring (10) is moved downward to
Sheath port (4) connect with body port (2) during piston air chamber (9) bottom.
A kind of 4. hydraulic selector circulation slide sleeve according to claim 1, it is characterised in that：The inner side of described piston (6)
The upper and lower end face being in contact with sliding sleeve body (1) is sealed by the first O-ring seal (7) respectively, the outside of piston (6) and sheath
(3) contact surface is sealed by the second O-ring seal (8).
A kind of 5. hydraulic selector circulation slide sleeve according to claim 1, it is characterised in that：Described sheath (3) passes through spiral shell
Line is connected with sliding sleeve body (1).
A kind of 6. hydraulic selector circulation slide sleeve according to claim 1, it is characterised in that：Described sheath (3) and sliding sleeve
The upper and lower end face that body (1) is in contact is sealed by sheath O-ring seal (11) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710908383.6A CN107558951A (en) | 2017-09-29 | 2017-09-29 | Hydraulic switch circulating sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710908383.6A CN107558951A (en) | 2017-09-29 | 2017-09-29 | Hydraulic switch circulating sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107558951A true CN107558951A (en) | 2018-01-09 |
Family
ID=60984713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710908383.6A Pending CN107558951A (en) | 2017-09-29 | 2017-09-29 | Hydraulic switch circulating sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107558951A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397155A (en) * | 2018-03-02 | 2018-08-14 | 荆州市赛瑞能源技术有限公司 | A kind of closable hydraulic pressure opening sliding sleeve |
| CN110725666A (en) * | 2018-07-17 | 2020-01-24 | 中国石油天然气股份有限公司 | Method for repeatedly opening and closing electric sliding sleeve and replacing protective liquid for mine gas injection pipeline |
| CN111734348A (en) * | 2020-08-07 | 2020-10-02 | 深圳百途石油技术服务有限公司 | Pressure control sliding sleeve |
| CN112324388A (en) * | 2020-11-30 | 2021-02-05 | 中国石油集团渤海钻探工程有限公司 | Ball-throwing-free pressure test circulating sliding sleeve |
| CN114809940A (en) * | 2021-01-18 | 2022-07-29 | 中国石油天然气股份有限公司 | safety joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2206714C2 (en) * | 2001-06-18 | 2003-06-20 | Вагапов Юнир Гафурович | Xirxulation valve |
| CN203285390U (en) * | 2013-05-14 | 2013-11-13 | 东营百华石油技术开发有限公司 | Well-flushing circulating check valve on pump |
| CN204436327U (en) * | 2014-12-18 | 2015-07-01 | 天津汇铸石油设备科技有限公司 | Switching sliding sleeve |
| CN107178347A (en) * | 2017-07-03 | 2017-09-19 | 中国石油天然气股份有限公司 | Long-acting CO2Gas injection pipe column and operation method |
-
2017
- 2017-09-29 CN CN201710908383.6A patent/CN107558951A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2206714C2 (en) * | 2001-06-18 | 2003-06-20 | Вагапов Юнир Гафурович | Xirxulation valve |
| CN203285390U (en) * | 2013-05-14 | 2013-11-13 | 东营百华石油技术开发有限公司 | Well-flushing circulating check valve on pump |
| CN204436327U (en) * | 2014-12-18 | 2015-07-01 | 天津汇铸石油设备科技有限公司 | Switching sliding sleeve |
| CN107178347A (en) * | 2017-07-03 | 2017-09-19 | 中国石油天然气股份有限公司 | Long-acting CO2Gas injection pipe column and operation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397155A (en) * | 2018-03-02 | 2018-08-14 | 荆州市赛瑞能源技术有限公司 | A kind of closable hydraulic pressure opening sliding sleeve |
| CN108397155B (en) * | 2018-03-02 | 2020-01-24 | 荆州市赛瑞能源技术有限公司 | A closable hydraulic opening sliding sleeve |
| CN110725666A (en) * | 2018-07-17 | 2020-01-24 | 中国石油天然气股份有限公司 | Method for repeatedly opening and closing electric sliding sleeve and replacing protective liquid for mine gas injection pipeline |
| CN111734348A (en) * | 2020-08-07 | 2020-10-02 | 深圳百途石油技术服务有限公司 | Pressure control sliding sleeve |
| CN112324388A (en) * | 2020-11-30 | 2021-02-05 | 中国石油集团渤海钻探工程有限公司 | Ball-throwing-free pressure test circulating sliding sleeve |
| CN114809940A (en) * | 2021-01-18 | 2022-07-29 | 中国石油天然气股份有限公司 | safety joint |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180109 |