CN211314144U - Throttling bypass valve for continuous oil pipe - Google Patents
Throttling bypass valve for continuous oil pipe Download PDFInfo
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- CN211314144U CN211314144U CN201922456345.9U CN201922456345U CN211314144U CN 211314144 U CN211314144 U CN 211314144U CN 201922456345 U CN201922456345 U CN 201922456345U CN 211314144 U CN211314144 U CN 211314144U
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- 239000007788 liquid Substances 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 239000012530 fluid Substances 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000005406 washing Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a coiled tubing is with throttle bypass valve. The bypass valve comprises a valve body, a sliding sleeve, a sealing element and an elastic element, wherein the valve body is of a hollow structure and can comprise a first valve body and a second valve body sleeved with the first valve body, and the valve wall of the first valve body is provided with at least one bypass hole penetrating through the valve wall; the sliding sleeve is sleeved in the hollow structure of the valve body and can axially slide in the hollow structure to plug or open the bypass hole; the sealing element comprises a first sealing element and a second sealing element, and the sealing element is arranged between the sliding sleeve and the inner side of the valve wall; the elastic piece can provide elasticity opposite to the flow direction of liquid in the valve body for the sliding sleeve so as to restore the sliding sleeve and block the bypass hole. The beneficial effects of the utility model include: the device can realize multiple underground switch operations, is not limited by underground tools, instruments and drill holes, and can realize large-discharge well washing.
Description
Technical Field
The utility model relates to an oil gas field coiled tubing operation field specifically relates to a coiled tubing is with throttle bypass valve.
Background
The conventional normally closed bypass valve is usually opened and closed by adopting a mode of throwing balls for many times, and the bypass valve has the defects that the ball throwing is required for opening or closing the bypass valve every time, the operation is complicated, and the ball throwing times are limited.
SUMMERY OF THE UTILITY MODEL
To the not enough that exist among the prior art, the utility model aims to solve one or more problems that exist among the above-mentioned prior art. For example, one of the objects of the present invention is to provide a coiled tubing throttle bypass valve that can be opened and closed without dropping a ball.
In order to achieve the purpose, the utility model provides a coiled tubing is with throttle bypass valve. The bypass valve can comprise a valve body, a sliding sleeve, a sealing element and an elastic element, wherein the valve body is of a hollow structure and can comprise a first valve body and a second valve body sleeved with the first valve body; the sliding sleeve is sleeved in the hollow structure of the valve body and can slide axially in the hollow structure to plug or open the by-pass hole, the sliding sleeve is provided with a circulation channel which is communicated with the hollow structure in the first valve body and has a radial dimension smaller than that of the hollow structure of the valve body along the middle part in the radial direction, the sliding sleeve can comprise a first sliding sleeve part and a second sliding sleeve part which are connected with each other, the radial dimension of the first sliding sleeve part is larger than that of the second sliding sleeve part, the first sliding sleeve part is attached to the inner side of the valve wall of the first valve body, one end of the second sliding sleeve part is connected with the first sliding sleeve part, the other end is arranged in the hollow structure of the second valve body and is attached to the inner side of the valve wall of the second valve body, the end face of the second sliding sleeve part is sealed and is close to the side wall of the end face, and at least one flow guide hole is arranged, the flow guide hole enables the flow passage to be communicated with a hollow structure in the second valve body, and a cavity is formed by the first sliding sleeve part, the second sliding sleeve part, the first valve body and the step platform; the seal may include a first seal disposed between the first sleeve portion and the valve wall of the first valve body and a second seal disposed between the second sleeve portion and the valve wall of the second valve body; the elastic piece is arranged in the cavity, one end of the elastic piece is arranged on the step platform, the other end of the elastic piece is connected with the sliding sleeve, and the elastic piece can provide elastic force opposite to the flow direction of liquid in the valve body for the sliding sleeve so as to reset the sliding sleeve and block the bypass hole.
In an exemplary embodiment of the present invention, the second sliding sleeve portion has a table-board whose diameter decreases along the liquid flow direction, the valve wall inner side of the second valve body is provided with a throttling boss, when the sliding sleeve slides along the liquid flow direction, the throttling boss can be adapted to the table-board, so that the liquid flows through between the throttling boss and the table-board.
In an exemplary embodiment of the invention, the first valve body may be threadedly connected with the second valve body.
In an exemplary embodiment of the present invention, the first valve body and the second valve body may be an integral structure.
In an exemplary embodiment of the present invention, the number of the bypass holes may be 2 to 5.
In an exemplary embodiment of the present invention, an end of the first valve body, which is far away from the socket, may be provided with an external thread.
In an exemplary embodiment of the present invention, an end of the second valve body away from the socket may be provided with an internal thread.
In an exemplary embodiment of the present invention, the first and second sealing members may be O-rings.
In an exemplary embodiment of the present invention, the elastic member may be a spring.
Compared with the prior art, the beneficial effects of the utility model can include: the device can realize multiple underground switch operations, is not limited by underground tools, instruments and drill holes, and can realize large-discharge well washing.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 illustrates a schematic view of a closed state of a coiled tubing choke and bypass valve in an exemplary embodiment of the invention;
fig. 2 shows a schematic structural diagram of an open state of a throttle bypass valve for coiled tubing according to an exemplary embodiment of the present invention.
Description of the main reference numerals:
1. valve body, 101, first valve body, 102, second valve body, 2, sliding sleeve, 3, first sealing member, 4, second sealing member, 5, elastic member, 6, by pass hole, 7, step platform, 8, circulation passageway, 9, cavity, 10, water conservancy diversion hole, 11, throttle boss.
Detailed Description
Hereinafter, the choke-bypass valve for coiled tubing according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
The utility model provides a coiled tubing is with throttle bypass valve.
In an exemplary embodiment of the present invention, as shown in fig. 1, fig. 1 is a cross-sectional view along an axis in an initial state of a bypass valve, which may include a valve body 1, a sliding sleeve 2, a sealing member, and an elastic member 5.
Specifically, the valve body 1 may be a cylinder having a hollow structure. As shown in fig. 1, the valve body 1 may include a first valve body 101 having a hollow structure and a second valve body 102 having a hollow structure, the second valve body 102 is sleeved on a lower end of the first valve body 101, and a part of a valve wall on an upper end of the second valve body 102 is disposed in the hollow structure of the first valve body 101 and is tightly attached to the valve wall of the first valve body 101. And, a step 7 is formed at an upper end portion of the second valve body 102 placed in the first valve body 101. At least one bypass hole 6 which can enable the liquid in the valve body 1 to flow out of the valve body can be further arranged on the valve wall of the first valve body, and the axial direction of the bypass hole is perpendicular to the axial direction of the valve body.
In this embodiment, the number of the bypass holes may be set according to experience or actual conditions in the field. For example, the number of bypass holes may be 3 or 4.
In this embodiment, the first valve body is threadedly connected to the second valve body.
In addition, the first valve body and the second valve body may be an integrated structure.
In particular, the sliding sleeve 2 may be located within the valve body 1. The shape of the sliding sleeve 2 can be matched with the hollow structure shape of the valve body 1. The middle part of the sliding sleeve 2 along the radial direction is provided with a flow passage 8 communicated with the hollow structure of the first valve body 101. As shown in fig. 1, a fluid inlet is disposed on an upper end surface of the flow channel 8, and a lower end surface is a closed structure. When the liquid in the valve body flows in from the fluid inlet, the liquid flows out from the flow guide hole 10 formed in the side wall of the sliding sleeve. As shown in fig. 1, the sliding sleeve may include a first sliding sleeve portion at an upper end and a second sliding sleeve portion at a lower end, the first sliding sleeve portion having a radial dimension greater than that of the second sliding sleeve portion. In addition, in the radial direction, the outer side of the first sliding sleeve part is attached to the inner side of the valve wall of the first valve body 101, the outer side of the second sliding sleeve part is attached to the inner side of the valve wall of the second valve body 102, and at least one diversion hole 10 is further formed in the lower portion of the attachment position of the outer side of the second sliding sleeve part and the valve wall of the second valve body, and the diversion hole enables the circulation channel to be communicated with the hollow structure of the second valve body. Meanwhile, the liquid in the valve body can enter from the flow passage and flow out from the flow guide hole to flow through the sliding sleeve. And a cavity 9 is formed by enclosing the first sliding sleeve part, the second sliding sleeve part, the step platform and the first valve body. As shown in fig. 1, in a state that the bypass valve is closed, the sliding sleeve 2 is disposed outside the at least one bypass hole 6 to block the bypass hole.
In this embodiment, the number of the flow guide holes may be two.
In this embodiment, since the lower end of the sliding sleeve 2 is closed, only the diversion hole on the side wall of the second sliding sleeve part can pass through the liquid, so that part of the liquid in the bypass valve can pass through the bypass hole.
In particular, the seals may comprise a first seal 3 and a second seal 4. The first seal may be disposed between the first sleeve portion and a valve wall of the first valve body. The second seal 4 is arranged between the second sleeve portion and the valve wall of the second valve body. As shown in fig. 1, the first sealing member is positioned at the upper end of the bypass hole. Both the first seal and the second seal are capable of preventing liquid within the valve body from flowing out through the bypass orifice.
In this embodiment, the first and second sealing members may be both O-rings and support rings, and the support rings are installed on both sides of the O-rings and can be used to increase the sealing pressure of the O-rings.
In particular, the elastic element 5 may be arranged in said cavity 9. One end of the elastic member 5 may be disposed on the step 7, and the other end may be connected to the sliding sleeve 2. The elastic element can provide a force opposite to the liquid flow direction to the sliding sleeve so as to reset the movable sliding sleeve 2 body.
In this embodiment, the elastic member may be a spring, but the elastic member of the present invention is not limited thereto.
In this embodiment, the bypass valve may be provided with external threads on the end into which fluid flows for connection with an upper connection device, which may include coiled tubing, a check valve, a hydraulic release, etc. The bypass valve outflow end may be provided with an internal thread for connection with a lower connection device, wherein the lower connection device may comprise a hydraulic motor or the like.
Specifically, the lowermost end of the second sliding sleeve part is provided with a circular truncated cone with the diameter gradually reduced from top to bottom. As shown in fig. 1, a throttle boss 11 may be further disposed on the inner side of the valve wall of the second valve body 102, and when the bypass valve is closed, the throttle boss 11 and the circular table have a certain distance. The throttling boss 11 can be a boss surrounding the inner side of the valve wall of the second valve body 102, a hole section is formed by the boss in a surrounding mode, the inner diameter of the boss is gradually increased from top to bottom, the throttling boss 11 is matched with the circular truncated cone, however, when the circular truncated cone reaches the hole section formed by the throttling boss, the second valve body cannot be blocked, and a channel through which fluid can pass is formed between the circular truncated cone and the throttling boss.
In this embodiment, as shown in fig. 1, in the initial state (i.e. the closed state) of the bypass valve, the first sealing member 3 is located at the upper end of the bypass hole 6, and the second sealing member 4 is located at the lower end of the bypass hole 6, so that the liquid in the bypass valve is ensured not to flow to the outside through the bypass hole 6. The bypass valve and other downhole tools are sequentially connected to the lower end of the coiled tubing and conveyed into the well. The elastic member 5 is located in the cavity 9, and the sliding sleeve 2 cannot move downwards in the initial state under the reaction force of the elastic member 5.
When liquid is pumped into the continuous oil pipe, when the liquid passes through the bypass valve, the liquid can flow through the flow passage in the middle of the sliding sleeve 2, and because the diameter of the flow passage 8 in the middle of the sliding sleeve 2 is smaller than the inner diameter of the bypass valve at other positions, when the liquid flows through the flow passage 8 in the middle of the sliding sleeve 2, a pressure difference is generated between the upper end and the lower end of the sliding sleeve 2, so that the pressure at the upper end of the sliding sleeve 2 is greater than the pressure at the lower end, and the larger the displacement is, the larger the pressure difference between the upper end and the lower end of the; under the action of this pressure difference, the sliding sleeve 2 will move downwards against the upward reaction force of the elastic member 5. As shown in fig. 2 (fig. 2 and fig. 1 only have the position of the sliding sleeve different, and the rest are the same), fig. 2 is a cross-sectional view of a cross section passing through the axis when the bypass valve is opened, when the displacement exceeds a certain threshold, the sliding sleeve 2 can be pushed downwards to a certain position, at this time, the first sealing member 3 is positioned at the lower end of the bypass hole 2, the pipe of the bypass valve is communicated with the annular space, and thus, part of fluid is left in the annular space from the bypass hole, and the function of opening the bypass valve is realized.
When reducing the discharge capacity once more after, sliding sleeve 2 is upper, the pressure differential value at lower both ends reduces, sliding sleeve 2 is upper this moment, the pressure differential at lower both ends is less than the ascending reaction force of elastic component 5, under the reaction force of spring 2, sliding sleeve 2 can up move, when the discharge capacity is less than certain threshold value, sliding sleeve 2 can be pushed up a locating position, first sealing member 3 is located the upper end of bypass hole 2 this moment, keep apart with the annular space in the intraductal of bypass valve, no longer have the fluid to leave the annular space from the bypass hole this moment, thereby realize the function that the bypass valve closed.
When the sliding sleeve 2 moves downwards, the distance between the circular truncated cone at the lower end of the sliding sleeve 2 and the throttling boss 11 is also close continuously, when the distance between the circular truncated cone and the throttling boss is far away, the throttling pressure difference generated at the throttling boss 11 can be ignored, but when the distance between the circular truncated cone and the throttling boss is far away, the throttling pressure difference generated at the throttling boss 11 is larger and larger, and when the distance between the circular truncated cone and the throttling boss is close enough, the throttling pressure difference generated at the throttling boss 11 is far more than the pressure difference generated when fluid flows through a flow passage in the middle of the sliding sleeve 2. The round platform at the lower end of the sliding sleeve 2 and the throttling boss 11 cannot be completely closed, and a gap for fluid to flow through is reserved. The throttling pressure difference generated at the throttling boss 11 is mainly used for adjusting the flow passing through the channel in the middle of the sliding sleeve 2 and the flow passing through the bypass hole 2. When the bypass valve starts, the sliding sleeve 2 continues to move downwards, and when the distance between the circular truncated cone at the lower end of the sliding sleeve 2 and the throttling boss 11 is long, most of fluid can flow through the flow passage in the middle of the sliding sleeve 2, and a small part of fluid can pass through the bypass hole 2; when the distance between the round platform at the lower end of the sliding sleeve 2 and the throttling boss 11 is short, only a small part of fluid can flow through the flow channel in the middle of the sliding sleeve 2, and most of fluid can pass through the bypass hole 2.
To sum up, the utility model discloses an advantage of choke valve for coiled tubing can include:
(1) the function of opening and closing the bypass valve can be realized, and the flow distribution function of the underground bypass valve can be realized by pumping displacement control through the bottom surface;
(2) the bypass valve is opened and closed in a ball-throwing-free mode, multiple underground opening and closing operations can be realized, the annular space flow rate can be improved in the drilling of a horizontal well and a directional well, and the cleaning capacity of the lower side of a well wall is enhanced;
(4) special operations such as no tripping, leakage stoppage and the like can be realized, and the drilling period is shortened;
(5) the bypass valve is automatically closed when the pump is stopped, so that the possible U-shaped tube effect or well control problem is avoided;
(6) the device is not limited by downhole tools, instruments and drill holes, and can realize large-discharge well washing;
(7) multiple underground switching operations can be realized;
(8) the difficulty is flowbacked to the compound bridging plug drill chip of horizontal segment, causes the card and bores the accident and takes place occasionally, influences the process operation difficult problems such as later stage liquid flowback, examination gas, logging, the utility model discloses a use of bypass valve can effectively improve pit shaft circulation liquid discharge capacity, and the horizontal well section drill chip of clearance avoids a large amount of deposits of drill chip, prevents the continuous oil pipe card and bores. Therefore, the times of drill clamping and pump overpressure stop and the processing time are reduced, the times of drill tripping replacement and cleaning tools are reduced, the times of tripping the coiled tubing is reduced, the operation time is shortened, and the construction efficiency is improved;
(9) after the drill is stuck, a large-discharge circulation channel is not provided, and an auxiliary stuck releasing means is provided. The utility model discloses an emergence of the in-process preventable card brill condition is ground in the use of bypass valve, bores to improve pit shaft circulation passageway for horizontal segment detritus deposit piece and sand setting can in time return the discharge well head. After the card is encountered, a large-discharge circulation channel can be reestablished, an auxiliary card releasing means is provided, and the purpose of releasing the card is achieved.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A throttle bypass valve for a coiled tubing is characterized by comprising a valve body, a sliding sleeve, a sealing element and an elastic element, wherein,
the valve body is of a hollow structure and comprises a first valve body and a second valve body sleeved with the first valve body, wherein at the sleeved position of the first valve body and the second valve body, the valve wall of the second valve body is arranged in the hollow structure of the first valve body, a step platform is formed on the end face of the valve wall of the second valve body, and at least one by-pass hole penetrating through the valve wall is formed in the valve wall of the first valve body;
the sliding sleeve is sleeved in the hollow structure of the valve body and can slide axially in the hollow structure to plug or open the by-pass hole, the sliding sleeve is provided with a circulation channel which is communicated with the hollow structure in the first valve body and has a radial dimension smaller than that of the hollow structure of the valve body along the middle part in the radial direction, the sliding sleeve comprises a first sliding sleeve part and a second sliding sleeve part which are connected with each other, the radial dimension of the first sliding sleeve part is larger than that of the second sliding sleeve part, the first sliding sleeve part is attached to the inner side of the valve wall of the first valve body, one end of the second sliding sleeve part is connected with the first sliding sleeve part, the other end is arranged in the hollow structure of the second valve body and is attached to the inner side of the valve wall of the second valve body, the end face of the second sliding sleeve part is closed and is close to the side wall of the end face, and at least one flow guide hole is arranged, the flow guide hole enables the flow passage to be communicated with a hollow structure in the second valve body, and a cavity is formed by the first sliding sleeve part, the second sliding sleeve part, the first valve body and the step platform;
the seal comprises a first seal disposed between the first sleeve portion and the valve wall of the first valve body and a second seal disposed between the second sleeve portion and the valve wall of the second valve body;
the elastic piece is arranged in the cavity, one end of the elastic piece is arranged on the step platform, the other end of the elastic piece is connected with the sliding sleeve, and the elastic piece can provide elastic force opposite to the flow direction of liquid in the valve body for the sliding sleeve so as to reset the sliding sleeve and block the bypass hole.
2. The choke valve for a coiled tubing of claim 1, wherein the other end of the second sliding sleeve portion has a table surface with a diameter decreasing in the direction of fluid flow, and a throttling boss is provided inside the valve wall of the second valve body, the throttling boss being capable of fitting with the table surface when the sliding sleeve slides in the direction of fluid flow, so that fluid flows between the throttling boss and the table surface.
3. The choke valve for a coiled tubing according to claim 1, wherein the first valve body is threadably connected to the second valve body.
4. The choke valve for a coiled tubing according to claim 1, wherein the first valve body and the second valve body are of a unitary construction.
5. The throttle valve for a coiled tubing of claim 1, wherein the number of the bypass holes is 2-5.
6. The choke valve for a coiled tubing according to claim 1, wherein an end of the first valve body distal from the socket is provided with external threads.
7. The choke valve for a coiled tubing according to claim 1, wherein an end of the second valve body distal from the socket is internally threaded.
8. The choke valve for a coiled tubing according to claim 1, wherein the first and second seals are O-rings.
9. The choke valve for a coiled tubing according to claim 1, wherein the resilient member is a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922456345.9U CN211314144U (en) | 2019-12-30 | 2019-12-30 | Throttling bypass valve for continuous oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922456345.9U CN211314144U (en) | 2019-12-30 | 2019-12-30 | Throttling bypass valve for continuous oil pipe |
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| Publication Number | Publication Date |
|---|---|
| CN211314144U true CN211314144U (en) | 2020-08-21 |
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ID=72064352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922456345.9U Active CN211314144U (en) | 2019-12-30 | 2019-12-30 | Throttling bypass valve for continuous oil pipe |
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| Country | Link |
|---|---|
| CN (1) | CN211314144U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354988A (en) * | 2022-10-21 | 2022-11-18 | 中石化西南石油工程有限公司 | Multi-time switch quick leaking stoppage valve |
-
2019
- 2019-12-30 CN CN201922456345.9U patent/CN211314144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354988A (en) * | 2022-10-21 | 2022-11-18 | 中石化西南石油工程有限公司 | Multi-time switch quick leaking stoppage valve |
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