CN111734348A - Pressure control sliding sleeve - Google Patents
Pressure control sliding sleeve Download PDFInfo
- Publication number
- CN111734348A CN111734348A CN202010790298.6A CN202010790298A CN111734348A CN 111734348 A CN111734348 A CN 111734348A CN 202010790298 A CN202010790298 A CN 202010790298A CN 111734348 A CN111734348 A CN 111734348A
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- cavity
- piston
- hole
- liquid inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 230000009471 action Effects 0.000 claims abstract description 6
- 230000008859 change Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 5
- 241000463219 Epitheca Species 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 9
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000191291 Abies alba Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
A pressure control sliding sleeve relates to the technical field of well completion operation. It comprises the following steps: the sliding sleeve comprises a sliding sleeve body, wherein a hydraulic hole and a liquid inlet hole which are communicated with the annular space are formed in the sliding sleeve body; and the hydraulic control switch is movably assembled in the sliding sleeve body, is communicated with the hydraulic hole and is used for opening or closing the liquid inlet hole according to the change of external hydraulic pressure. This internal cavity and the subspace that is used for supplying the assembly of hydraulic control switch that is equipped with hydraulic pressure hole and feed liquor hole intercommunication of sliding sleeve, hydraulic control switch includes: an elastic member fitted in the cavity; a piston movably assembled in the cavity and linearly reciprocating in the cavity under the action of external hydraulic pressure and an elastic piece; and the piston flashboard is movably assembled in the sub cavity, is fixedly connected with the piston and is used for moving along with the piston to open or close the liquid inlet hole. By adopting the technical scheme, the steel wire winding machine has the advantages of saving the operation time, reducing the operation cost, reducing the operation difficulty and eliminating the operation hidden danger of steel wire operation.
Description
Technical Field
The invention relates to the technical field of well completion operation, in particular to a pressure control sliding sleeve.
Background
In conventional completion operations, to protect the casing, the fluid in the annulus must typically be replaced with a completion fluid to prevent corrosion after the packer is set. At this time, steel wire operation is needed, namely, the steel wire with a sliding sleeve opening and closing tool is used for opening the sliding sleeve, and then the completion fluid is circulated into the annular space. After the completion fluid is replaced, the sliding sleeve is closed through steel wire operation, and the integrity of the oil pipe is guaranteed.
Also during workover of oil and gas wells, it is also necessary to run a slip switch tool into the tubing by wireline operations to open the slip before removing the completion tool and tubing from the well for operational safety. The well killing fluid with larger specific gravity is circulated to the well bottom through the sliding sleeve. Then the oil gas in the oil pipe is circulated into the separator to prevent pollution. Meanwhile, because the weight of the well killing fluid is large, the well killing fluid can press the formation oil gas to prevent well blowout.
Therefore, at least two times of steel wire operation are needed for well completion, at least one time of steel wire operation is needed for well workover, and the steel wire operation has more defects: the operation time is long, the operation cost is high, and operation hidden troubles such as: knotting and breaking, and easy to be hooked. Each trip generally takes 5-6 hours, the longer the well is deeper. The operating costs of deepwater fields can be as high as tens of thousands of dollars per hour. In addition, in the inclined shaft, because the inclination of the bottom of the oil pipe is higher or the inclined shaft is horizontal, the sliding sleeve cannot be opened or closed through steel wire operation. At the moment, the coiled tubing is required to be used for replacing steel wire operation, so that the operation difficulty is higher, and the operation cost is higher. Therefore, improvements are desired.
Disclosure of Invention
The invention aims to provide a pressure control sliding sleeve aiming at the defects and shortcomings of the prior art, and the pressure control sliding sleeve has the advantages of saving the operation time, reducing the operation cost, reducing the operation difficulty and eliminating the operation hidden danger of steel wire operation.
In order to achieve the purpose, the invention adopts the technical scheme that: a pressure control sleeve, comprising: the sliding sleeve comprises a sliding sleeve body, wherein a hydraulic hole and a liquid inlet hole which are communicated with the annular space are formed in the sliding sleeve body; and the hydraulic control switch is movably assembled in the sliding sleeve body, is communicated with the hydraulic hole and is used for opening or closing the liquid inlet hole according to the change of external hydraulic pressure.
This internal being provided with of sliding sleeve with hydraulic pressure hole with feed liquor hole intercommunication, be used for the confession the cavity of hydraulic control switch assembly, hydraulic control switch includes: an elastic member fitted in the cavity; and the piston is movably assembled in the cavity and linearly reciprocates in the cavity under the action of external hydraulic pressure and the elastic piece so as to open or close the liquid inlet hole.
The cavity has the subspace to keeping away from spring one side extension, hydraulic control switch still includes: the cavity has the subspace to keeping away from spring one side extension, hydraulic control switch still includes: the piston flashboard is movably assembled in the sub cavity, fixedly connected with one side of the piston, far away from the spring, and provided with a communication hole; the at least three sealing pieces are fixedly assembled on the piston flashboard and positioned on two sides of the liquid inlet hole and two sides of the communication hole; the piston gate plate can move along with the piston to enable the liquid inlet hole to be communicated with the communication hole so as to open or close the liquid inlet hole.
The sliding sleeve body comprises an inner shell, an upper shell and a lower shell; the upper shell is fixedly assembled on the inner shell, the cavity is arranged between the inner shell and the upper shell, and the liquid inlet hole is arranged on the upper shell; one end of the lower shell is fixedly assembled on the upper shell, the other end of the lower shell is fixedly assembled on the inner shell, the cavity is arranged between the upper shell and the inner shell, and the sub-cavity is arranged between the inner shell and the lower shell.
After the technical scheme is adopted, the invention has the beneficial effects that: when replacing the liquid in the oil pipe and the annular space, the liquid in the annular space enters the cavity from the hydraulic hole and presses the piston only by increasing the pressure in the annular space, the spring is compressed and contracted, the piston flashboard moves to one side close to the spring, so that the communication hole on the piston flashboard is aligned with the liquid inlet hole, the hydraulic hole is opened, then the liquid flows into the inner cavity of the sliding sleeve and flows into the oil pipe, at the moment, the safety valve is in an open state, and the liquid in the oil pipe flows out from the safety valve under the pushing of the liquid in the annular space and flows into the annular space, so that the liquid replacement in the oil pipe and the annular space is realized. After the liquid is to be changed, the pressure of the annular space is released to be the same as the pressure in the oil pipe, at the moment, the pressure applied to the piston in the cavity is removed, the piston is driven to reset under the action of the restoring force of the spring, and the piston drives the piston flashboard to reset, so that the liquid inlet hole is closed. The pressure in the annular space is controlled to control the opening or closing of the sliding sleeve, so that the sliding sleeve has the advantages of saving the operation time, reducing the operation cost, reducing the operation difficulty and eliminating the operation hidden danger of steel wire operation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of embodiment 1 of the present invention in a closed state;
fig. 2 is a schematic structural view of embodiment 1 of the present invention in an open state;
FIG. 3 is a schematic structural view of embodiment 1 of the present invention when installed in an oil pipe;
fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.
Description of reference numerals: 1. a sliding sleeve body; 11. an inner shell; 12. an upper shell; 13. a lower case; 14. a hydraulic bore; 15. a liquid inlet hole; 16. a cavity; 17. a sub-cavity; 18. an inner cavity of the sliding sleeve; 2. a hydraulic control switch; 21. an elastic member; 22. a piston; 23. a piston ram; 231. a communicating hole; 24. a seal member; 3. an annulus; 4. an oil pipe; 5. a safety valve; 6. a pressure control sliding sleeve; 7. a Christmas tree.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.
Example 1
The present embodiment relates to a pressure control sliding sleeve, as shown in fig. 1, including: sliding sleeve body 1 and hydraulic control switch 2. Wherein, the sliding sleeve body 1 is provided with a hydraulic hole 14 and a liquid inlet hole 15. The hydraulic hole 14 is communicated with the annular space 3 and the hydraulic control switch 2, and the liquid inlet hole 15 is communicated with the annular space 3, the inner cavity of the sliding sleeve body 1 and the hydraulic control switch 2. The hydraulic control switch 2 is movably assembled in the sliding sleeve body 1, and the hydraulic control switch 2 is used for opening or closing the liquid inlet hole 15 according to the change of external hydraulic pressure. Through the pressure in the control annular space 3 to the opening or closing of control sliding sleeve has not only saved the activity duration, has reduced the working cost, thereby has reduced oil field development time and cost, has still reduced the operation degree of difficulty and has eliminated the operation hidden danger of steel wire operation.
Further, the hydraulic control switch 2 includes: elastic member 21, piston 22, piston gate 23 and sealing member 24.
A cavity 16 communicated with the hydraulic hole 14 is arranged in the sliding sleeve body 1. The resilient member 21 is fitted in the cavity 16. Preferably, the elastic member 21 is a spring. The piston 22 is movably fitted in the cavity 16 and has one end abutting against the spring. The cavity 16 is provided with a sub-cavity 17 on the side facing away from the spring. The piston gate plate 23 is fixedly connected with one side of the piston 22 far away from the spring, and the piston gate plate 23 is movably assembled in the sub-cavity 17. The piston shutter 23 is provided with a communication hole 231 that can communicate with the liquid inlet hole 15. The sealing members 24 are fixedly assembled on the piston shutter 23, and preferably, the sealing members 24 are provided in 3 numbers and are respectively positioned on both sides of the liquid inlet hole 15 and both sides of the communication hole 231. The piston 22 makes a linear reciprocating motion in the cavity 16 under the action of the external hydraulic pressure and the elastic member 21, and drives the piston gate plate 23 to make a linear reciprocating motion in the sub-cavity 17 so as to open or close the liquid inlet hole 15, thereby realizing the control of the opening and closing of the sliding sleeve in a hydraulic manner. Namely, when the piston gate plate 23 moves along with the piston 22 to the communication hole 231 and is aligned with the liquid inlet hole 15, the annular space 3 is communicated with the inner cavity 18 of the sliding sleeve, and the sliding sleeve is opened. Preferably, the communication hole 231 and the liquid inlet hole 15 are each provided with 1, and the communication hole 231 and the liquid inlet hole 15 may be provided in plurality for the purpose of increasing the flow rate.
The sliding sleeve body 1 includes: an inner shell 11, an upper shell 12 and a lower shell 13. The upper shell 12 is fixedly assembled on the inner shell 11, the cavity 16 is arranged between the inner shell 11 and the upper shell 12, and the liquid inlet hole 15 is arranged on the upper shell 12; one end of the lower shell 13 is fixedly assembled on the upper shell 12, the other end is fixedly assembled on the inner shell 11, the cavity 16 is arranged between the upper shell 12 and the inner shell 11, and the sub-cavity 17 is arranged between the inner shell 11 and the lower shell 13.
The working principle of the invention is roughly as follows: when the liquid in the oil pipe 4 and the annulus 3 needs to be replaced (the completion fluid in the oil pipe 4 replaces the liquid in the annulus 3 or the killing fluid in the annulus 3 replaces the liquid in the oil pipe 4) in the well completion operation or the workover operation, the liquid in the annulus 3 enters the cavity 16 from the hydraulic hole 14 by increasing the pressure in the annulus 3, the piston 22 is pressed, the spring is compressed, the piston flashboard 23 moves to the side close to the spring, the communication hole 231 on the piston flashboard 23 is aligned with the liquid inlet hole 15, the hydraulic hole 14 is opened, and then the liquid flows to the sliding sleeve inner cavity 18 and flows to the oil pipe 4, at the moment, the safety valve 5 is in an opened state, and the liquid in the oil pipe 4 flows out from the safety valve 5 under the pushing of the liquid in the annulus 3 and flows to the annulus 3, so that the liquid replacement is realized. After the liquid is replaced, the pressure of the annular space 3 is relieved to be the same as the pressure in the oil pipe 4, at the moment, the pressure applied to the piston 22 in the cavity 16 is removed, the piston 22 drives the piston 22 to reset under the action of the restoring force of the spring, and the piston 22 drives the piston flashboard 23 to reset, so that the liquid inlet hole 15 is closed. Through the pressure in the control annular space 3 to the opening or closing of control sliding sleeve has the advantage of saving activity duration, reducing the working cost, reducing the operation degree of difficulty, eliminating the operation hidden danger of steel wire operation.
Example 2
The main difference between the present embodiment and embodiment 1 is that the sliding sleeve body 1 includes: the device comprises an inner shell 11 and an upper shell 12, wherein part of the upper shell 12 is sleeved outside the inner shell 11, and one end of the upper shell is fixedly assembled on the inner shell 11. The cavity 16 is provided between the inner shell 11 and the upper shell 12. The hydraulic hole 14 is arranged on the upper shell 12, the liquid inlet hole 15 is arranged on the inner shell 11, and the hydraulic hole 14 and the liquid inlet hole 15 are both communicated with the cavity 16.
The hydraulic control switch 2 includes: an elastic member 21 and a piston 22. The resilient member 21 is fitted in the cavity 16. The piston 22 is movably fitted in the cavity 16 between the hydraulic pressure hole 14 and the liquid inlet hole 15, and one end thereof abuts against the elastic member 21. The piston 22 is linearly reciprocated inside the cavity 16 by the external hydraulic pressure and the elastic member 21 to open or close the liquid inlet hole 15. Thereby realize through the switch of hydraulic mode control sliding sleeve.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. A pressure control sleeve, comprising: the sliding sleeve comprises a sliding sleeve body (1), wherein a hydraulic hole (14) and a liquid inlet hole (15) which are communicated with the annular space (3) are formed in the sliding sleeve body (1); and the number of the first and second groups,
the hydraulic control switch (2) is movably assembled in the sliding sleeve body (1), is communicated with the hydraulic hole (14) and is used for opening or closing the liquid inlet hole (15) according to the change of external hydraulic pressure.
2. The pressure control sliding sleeve according to claim 1, wherein a cavity (16) communicated with the hydraulic hole (14) and the liquid inlet hole (15) and used for assembling the hydraulic control switch (2) is arranged in the sliding sleeve body (1), and the hydraulic control switch (2) comprises:
an elastic member (21) fitted in the cavity (16); and the number of the first and second groups,
and the piston (22) is movably assembled in the cavity (16) and linearly reciprocates in the cavity (16) under the action of external hydraulic pressure and the elastic piece (21) to open or close the liquid inlet hole (15).
3. The pressure control sliding sleeve according to claim 2, wherein the cavity (16) extends with a subspace to the side far away from the spring, and the hydraulic control switch (2) further comprises:
the piston flashboard (23) is movably assembled in the sub-cavity (17), fixedly connected with one side, far away from the spring, of the piston (22) and provided with a communication hole (231); and the number of the first and second groups,
at least 3 sealing elements (24) fixedly assembled on the piston flashboard (23) and positioned on two sides of the liquid inlet hole and two sides of the communication hole (231);
the piston shutter (23) is movable with the piston (22) to communicate the liquid inlet hole (15) with the communication hole (231) to open or close the liquid inlet hole (15).
4. The pressure control sliding sleeve according to claim 3, wherein the sliding sleeve body (1) comprises an inner shell (11), an upper shell (12) and a lower shell (13); the upper shell (12) is fixedly assembled on the inner shell (11), the cavity (16) is arranged between the inner shell (11) and the upper shell (12), and the liquid inlet hole (15) is arranged on the upper shell (12); inferior valve (13) one end fixed mounting in on epitheca (12), the other end fixed mounting in on inner shell (11), cavity (16) set up in epitheca (12) with between inner shell (11), subcavity (17) set up in inner shell (11) with between inferior valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790298.6A CN111734348A (en) | 2020-08-07 | 2020-08-07 | Pressure control sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010790298.6A CN111734348A (en) | 2020-08-07 | 2020-08-07 | Pressure control sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111734348A true CN111734348A (en) | 2020-10-02 |
Family
ID=72658259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010790298.6A Pending CN111734348A (en) | 2020-08-07 | 2020-08-07 | Pressure control sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111734348A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5381823A (en) * | 1994-02-14 | 1995-01-17 | Sun Hydraulics | Hydraulic pressure control valve |
| CN201202447Y (en) * | 2008-04-29 | 2009-03-04 | 中国海洋石油总公司 | Composite concentric tube column for liquor drainage gas production process |
| CN201535149U (en) * | 2009-10-14 | 2010-07-28 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Pilot-operated sliding sleeve switch |
| CN102720471A (en) * | 2012-06-05 | 2012-10-10 | 中国海洋石油总公司 | Safety valve of pressure control water injection well |
| CN103174399A (en) * | 2013-03-12 | 2013-06-26 | 中国海洋石油总公司 | Underground automatic control sliding sleeve device for multi-pressure-stratum system oil gas development |
| CN107558951A (en) * | 2017-09-29 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of hydraulic selector circulation slide sleeve |
| CN212508213U (en) * | 2020-08-07 | 2021-02-09 | 深圳百途石油技术服务有限公司 | Pressure control sliding sleeve |
-
2020
- 2020-08-07 CN CN202010790298.6A patent/CN111734348A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5381823A (en) * | 1994-02-14 | 1995-01-17 | Sun Hydraulics | Hydraulic pressure control valve |
| CN201202447Y (en) * | 2008-04-29 | 2009-03-04 | 中国海洋石油总公司 | Composite concentric tube column for liquor drainage gas production process |
| CN201535149U (en) * | 2009-10-14 | 2010-07-28 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Pilot-operated sliding sleeve switch |
| CN102720471A (en) * | 2012-06-05 | 2012-10-10 | 中国海洋石油总公司 | Safety valve of pressure control water injection well |
| CN103174399A (en) * | 2013-03-12 | 2013-06-26 | 中国海洋石油总公司 | Underground automatic control sliding sleeve device for multi-pressure-stratum system oil gas development |
| CN107558951A (en) * | 2017-09-29 | 2018-01-09 | 中国石油天然气股份有限公司 | A kind of hydraulic selector circulation slide sleeve |
| CN212508213U (en) * | 2020-08-07 | 2021-02-09 | 深圳百途石油技术服务有限公司 | Pressure control sliding sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105050773B (en) | Hydraulic hammer with impact system sub-component | |
| CN102817575B (en) | Downhole blow-out preventer with automatic controlling and anchoring function | |
| CN212508213U (en) | Pressure control sliding sleeve | |
| CN101975042B (en) | Fully functional anti-spouting oil drain device | |
| US20160069167A1 (en) | Downhole gas release apparatus | |
| GB2351988A (en) | Hydraulic control assembly and method for controlling the operation of a fluid activated downhole tool | |
| CN202165053U (en) | Novel hydraulic control underground sliding sleeve switch valve | |
| CN111395989A (en) | Core-pulling-free large-channel high-temperature high-pressure fracturing expansion type rubber cylinder packing tool | |
| CN111734348A (en) | Pressure control sliding sleeve | |
| CN201202430Y (en) | Boring tool inner blowout preventer | |
| CN110259407A (en) | A kind of machine liquid inner-lock-type compression packer | |
| CN109267962A (en) | A kind of motor driven compression rubber downhole blow-out preventer | |
| CN210370581U (en) | Novel plug for coiled tubing | |
| CN205743831U (en) | Bore hole circulating valve panel assembly | |
| CN219061594U (en) | Underground air release valve | |
| RU128896U1 (en) | DEVICE FOR TRANSFER OF WELLS, INCLUDING WATERFILLED, TO OPERATION ON TWO LIFT COLUMNS | |
| CN109798085A (en) | A kind of normally closed type unidirectionally injects downhole blow-out preventer | |
| CN207229057U (en) | A kind of multichannel oil/gas well production packer | |
| CN114645688B (en) | Packer while drilling for sealing and isolating high-pressure stratum overflow in well | |
| CN114439445A (en) | Sand prevention sliding sleeve | |
| CN221074180U (en) | Overload-proof stroke compensator | |
| CN102108845A (en) | Rotary blowout preventer | |
| CN218816338U (en) | Underground switch valve | |
| CN115012863B (en) | Method for replacing wellhead of high-pressure gas well without killing well | |
| CN203239271U (en) | Annular preventer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |