CN202249948U - Reverse circulation valve - Google Patents
Reverse circulation valve Download PDFInfo
- Publication number
- CN202249948U CN202249948U CN 201120358958 CN201120358958U CN202249948U CN 202249948 U CN202249948 U CN 202249948U CN 201120358958 CN201120358958 CN 201120358958 CN 201120358958 U CN201120358958 U CN 201120358958U CN 202249948 U CN202249948 U CN 202249948U
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- China
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- tube body
- sliding sleeve
- sleeve pipe
- reverse circulation
- pipe
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Abstract
The utility model relates to the technical field of reverse circulation well killing tools, in particular to a reverse circulation valve; the device comprises a central pipe, an upper joint, a sliding sleeve, a shear pin and a compression spring; the upper part of the central pipe is provided with at least one pressure transmission hole which is communicated with the central pipe in the radial direction, the outer side of the lower part of the central pipe is provided with a step, the upper end of the central pipe is fixedly arranged in the upper joint, the sliding sleeve pipe is fixedly connected with the outer side of the upper part of the central pipe through shear pins, and a space is arranged between the upper joint and the sliding sleeve pipe. The utility model has the advantages of reasonable and compact structure, high durability and convenient use, it cuts to make the shear pin on the reverse circulation valve to suppress through the annular space, sliding sleeve pipe extrusion compression spring moves down and opens the biography pressure hole on the center tube and carry out reverse circulation well-flushing, the sliding sleeve pipe moves up under compression spring's effect after the pressure release, reclosing passes the pressure hole, the purpose of removing sand blocking has been realized, when continuing the operation, suppress the messenger in the pipe and pass the pressure hole and be in the closed condition all the time, consequently, the continuity of operation has been guaranteed, thereby production efficiency and reliability have been improved.
Description
Technical field
the utility model relates to anti-circulation kill-job technical field of tools, is a kind of reverse circulation valve.
Background technology
are adopted, are controlled in the construction operation processes such as water blocking water, reservoir reconstruction at the mixed branch of adopting of exceptional wells such as Multilateral Wells; Often need carry out staged fracturing to horizontal well or Multilateral Wells master, branch well hole different reservoir; Can occur situation such as sand plug during pressure break, causing can't the normal construction operation; And conventional reverse circulation valve complex structure, reliability is not high, and opening pressure is big, be difficult for grasping, and pressure transmission hole do not guarantee to close again after opening again, and causes the later stage operation to carry out smoothly.
Summary of the invention
the utility model provides a kind of reverse circulation valve, has overcome the deficiency of above-mentioned prior art, and it can effectively solve existing reverse circulation valve complex structure, problem that the big reliability of opening pressure is low.
The technical scheme of
the utility model realizes through following measure: a kind of reverse circulation valve comprises central tube, top connection, sliding sleeve pipe, shear pin and compression spring; The pressure transmission hole that has at least one and central tube radially to communicate on the top of central tube; There is step in the outside, bottom at central tube; The upper end of central tube is fixedly mounted in the top connection; The upper outside of sliding sleeve pipe and central tube is fixed together through shear pin, between top connection and the sliding sleeve pipe spacing is arranged, and on the central tube between step and the sliding sleeve pipe, is set with the compression spring.
Be to the further optimization of above-mentioned utility model technical scheme below or/and improve:
above-mentioned central tube comprises upper tube body and lower tube body; The lower end of upper tube body and the upper end of lower tube body are fixed together; The external diameter of upper tube body is less than the lower tube body external diameter; Inside upper part at the sliding sleeve pipe can be fixed with boss, and boss and upper tube body can be fixed together through shear pin, and the bottom of sliding sleeve pipe can be sleeved on the lower tube body; Form annular seal space between sliding sleeve pipe and upper tube body and the lower tube body, the relief hole that on upper tube body, can have at least one to communicate with annular seal space.
above-mentioned upper tube body and top connection can be fixed together through screw thread.
are above-mentioned can be equipped with sealing ring between upper tube body and top connection.
The upper tube body of
above-mentioned above and below at pressure transmission hole can be equipped with sealing ring at least respectively between boss, between the sliding sleeve pipe, sealing ring at least can be installed at lower tube body.
the utility model reasonable and compact in structure, easy to use, suppress the shear pin that makes on the reverse circulation valve through annular space and cut off; Sliding sleeve pipe extruding compression spring moves down the pressure transmission hole on the central tube opened and carries out anti-circulation well cleanup; The sliding sleeve pipe moves under the effect of compression spring after the pressure release, closes pressure transmission hole again, realizes understanding the purpose of removing sand plug; When continuing operation; Suppress in will managing and make pressure transmission hole be in closed condition all the time, therefore guaranteed the continuity of operation, thereby improved production efficiency and reliability.
Description of drawings
accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.
Coding in
accompanying drawing is respectively: 1 is top connection, and 2 is the sliding sleeve pipe, and 3 is shear pin, and 4 are the compression spring, and 5 is pressure transmission hole, and 6 is step, and 7 is upper tube body, and 8 is lower tube body, and 9 is boss, and 10 is annular seal space, and 11 is relief hole, and 12 is sealing ring.
The specific embodiment
the utility model does not receive the restriction of following embodiment, can confirm concrete embodiment according to the technical scheme and the actual conditions of the utility model.
are in the utility model; For the ease of describing; The description of the relative position relation of each parts all is to describe according to the Butut mode of Figure of description, as: the position relation of forward and backward, upper and lower, left and right etc. is what to confirm according to the Butut direction of Figure of description.
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
shown in accompanying drawing 1, this reverse circulation valve comprises central tube, top connection 1, sliding sleeve pipe 2, shear pin 3 and compression spring 4; The pressure transmission hole 5 that has at least one and central tube radially to communicate on the top of central tube; There is step 6 in the outside, bottom at central tube; The upper end of central tube is fixedly mounted in the top connection 1; Sliding sleeve pipe 2 is fixed together through shear pin 3 with the upper outside of central tube, between top connection 1 and the sliding sleeve pipe 2 spacing is arranged, and on the central tube between step 6 and the sliding sleeve pipe 2, is set with compression spring 4.
Can according to actual needs above-mentioned reverse circulation valve be done further to optimize or/and improve:
shown in accompanying drawing 1, central tube comprises upper tube body 7 and lower tube body 8; The upper end of the lower end of upper tube body 7 and lower tube body 8 is fixed together; The external diameter of upper tube body 7 is less than lower tube body 8 external diameters; Inside upper part at sliding sleeve pipe 2 is fixed with boss 9, and boss 9 is fixed together through shear pin 3 with upper tube body 7, and the bottom of sliding sleeve pipe 2 is sleeved on the lower tube body 8; Form annular seal space 10, the relief hole 11 that on upper tube body 7, has at least one to communicate between sliding sleeve pipe 2 and upper tube body 7 and the lower tube body 8 with annular seal space 10.
shown in accompanying drawing 1, upper tube body 7 and top connection 1 are fixed together through screw thread, like this, are convenient to installation and removal top connection 1.
are equipped with sealing ring 12 between upper tube body 7 and top connection 1 shown in accompanying drawing 1, like this, be convenient to sealing between upper tube body 7 and the top connection 1.
are shown in accompanying drawing 1; Upper tube body 7 in the above and below of pressure transmission hole 5 is separately installed with sealing ring 12 at least between boss 9; At lower tube body 8 sealing ring 12 at least is installed between sliding sleeve pipe 2; Like this, be convenient to sliding sleeve pipe 2 sealing pressure transmission holes 5 and relief hole 11.
above technical characterictic has constituted the most preferred embodiment of the utility model, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characterictic according to actual needs, satisfies the demand of different situations.
The use of
the utility model most preferred embodiment: during on-the-spot the use; Reverse circulation valve and running tool link together; The multilayer staged fracturing tool that reverse circulation valve, running tool and hydraulic packer etc. are used is down to the design level position; When the sand plug phenomenon appears in fracturing work; Suppress the shear pin 3 that sliding sleeve pipe 2 receives responsive to axial force that boss 9 is connected with upper tube body 7 through annular space and cut off, sliding sleeve pipe 2 axial slips extruding compression spring 4 is opened the pressure transmission hole on the upper tube body 75 and is carried out anti-circulation well cleanup, thereby removes sand plug; Pressure release after anti-circulation well cleanup is accomplished, sliding sleeve pipe 2 moves under the effect of compression spring 4 after the pressure release, closes pressure transmission hole 5 again; When continuing fracturing work; Suppress in the pipe and make sliding sleeve pipe 2 seal up pressure transmission hole 5 all the time, pressure transmission hole 5 is in closed condition, thereby has guaranteed carrying out smoothly of later stage operation.
Claims (6)
1. a reverse circulation valve is characterized in that comprising central tube, top connection, sliding sleeve pipe, shear pin and compression spring; The pressure transmission hole that has at least one and central tube radially to communicate on the top of central tube; There is step in the outside, bottom at central tube; The upper end of central tube is fixedly mounted in the top connection; The upper outside of sliding sleeve pipe and central tube is fixed together through shear pin, between top connection and the sliding sleeve pipe spacing is arranged, and on the central tube between step and the sliding sleeve pipe, is set with the compression spring.
2. reverse circulation valve according to claim 1 is characterized in that central tube comprises upper tube body and lower tube body; The lower end of upper tube body and the upper end of lower tube body are fixed together; The external diameter of upper tube body is less than the lower tube body external diameter; Inside upper part at the sliding sleeve pipe is fixed with boss, and boss and upper tube body are fixed together through shear pin, and the bottom of sliding sleeve pipe is sleeved on the lower tube body; Form annular seal space between sliding sleeve pipe and upper tube body and the lower tube body, the relief hole that on upper tube body, has at least one to communicate with annular seal space.
3. reverse circulation valve according to claim 2 is characterized in that upper tube body and top connection are fixed together through screw thread.
4. according to claim 2 or 3 described reverse circulation valves, it is characterized in that between upper tube body and the top connection sealing ring being installed.
5. according to claim 2 or 3 described reverse circulation valves, it is characterized in that between boss, being separately installed with sealing ring at least on the upper tube body of above and below of pressure transmission hole, at lower tube body sealing ring at least is installed between the sliding sleeve pipe.
6. reverse circulation valve according to claim 4 is characterized in that the upper tube body of the above and below of pressure transmission hole is separately installed with sealing ring at least between boss, at lower tube body sealing ring at least is installed between the sliding sleeve pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358958 CN202249948U (en) | 2011-09-23 | 2011-09-23 | Reverse circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358958 CN202249948U (en) | 2011-09-23 | 2011-09-23 | Reverse circulation valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249948U true CN202249948U (en) | 2012-05-30 |
Family
ID=46111207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120358958 Expired - Lifetime CN202249948U (en) | 2011-09-23 | 2011-09-23 | Reverse circulation valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202249948U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926704A (en) * | 2012-12-03 | 2013-02-13 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Pressure-balancing one-way valve for coiled-tubing layering fracturing |
| CN103615214A (en) * | 2013-11-21 | 2014-03-05 | 中国石油集团西部钻探工程有限公司 | Cavity-shell type reverse circulation valve |
| CN110685640A (en) * | 2019-11-12 | 2020-01-14 | 陈爱民 | Switching sliding sleeve device for oil and gas exploitation, oil and gas exploitation tool and switching method for wall body through hole of oil and gas exploitation tool |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
-
2011
- 2011-09-23 CN CN 201120358958 patent/CN202249948U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926704A (en) * | 2012-12-03 | 2013-02-13 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Pressure-balancing one-way valve for coiled-tubing layering fracturing |
| CN102926704B (en) * | 2012-12-03 | 2015-05-27 | 中国石油集团川庆钻探工程有限公司井下作业公司 | Pressure-balancing one-way valve for coiled-tubing layering fracturing |
| CN103615214A (en) * | 2013-11-21 | 2014-03-05 | 中国石油集团西部钻探工程有限公司 | Cavity-shell type reverse circulation valve |
| CN103615214B (en) * | 2013-11-21 | 2016-06-01 | 中国石油集团西部钻探工程有限公司 | Chamber shell type reverse circulation valve |
| CN110685640A (en) * | 2019-11-12 | 2020-01-14 | 陈爱民 | Switching sliding sleeve device for oil and gas exploitation, oil and gas exploitation tool and switching method for wall body through hole of oil and gas exploitation tool |
| CN110685640B (en) * | 2019-11-12 | 2024-06-04 | 陈爱民 | Switching sliding sleeve device for oil gas exploitation, oil gas exploitation tool and switching method of wall body through hole of oil gas exploitation tool |
| CN114658387A (en) * | 2020-12-23 | 2022-06-24 | 中国石油化工股份有限公司 | Stage cementing device for preventing secondary grouting from being closed in advance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |