CN214330563U - Differential kill valve - Google Patents
Differential kill valve Download PDFInfo
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- CN214330563U CN214330563U CN202120284576.0U CN202120284576U CN214330563U CN 214330563 U CN214330563 U CN 214330563U CN 202120284576 U CN202120284576 U CN 202120284576U CN 214330563 U CN214330563 U CN 214330563U
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Abstract
The utility model discloses a differential kill valve, which comprises an outer pipe and a sliding valve; the sliding valve is arranged in the outer pipe and mutually forms a sliding sealing pair, and meanwhile, the sliding valve is connected with the outer pipe through shear pins; the outer wall of the sliding valve is provided with an annular groove, and the bottom of the annular groove is provided with a sliding valve radial through hole which is radially communicated; the inner wall of the sliding valve is provided with a conical necking which is used as a valve seat for bearing a dissoluble valve ball; the outer pipe is provided with a middle radial through hole for communicating the sliding valve with the annular groove after sliding. The utility model discloses even seal upper portion at unwashable well Y341, drop into soluble ball during workover, open the slide valve, the oil jacket intercommunication realizes the circulation kill-job, can motionless tubular column trade the well head.
Description
Technical Field
The utility model belongs to the technical field of the water injection instrument technique of high pressure water injection well casing protection tubular column and specifically relates to differential kill valve.
Background
The oil field high pressure water injection well generally adopts light pipe general water injection, but the corrosion and scaling of the sleeve pipe are accelerated due to high bearing pressure on the upper part of an oil layer, so that a one-stage high pressure resistant unwashable well Y341 packer and a protective sleeve pipe are generally adopted at present next to the upper part of the oil layer. Because the high-pressure water injection well generally has overflow, the high-pressure water injection well can operate after long-time overflow release; the Y341 packer for implementing the casing protection can not be used for well washing, once the well head is lost, the well head can not be replaced through the immobile pipe column, and the problem of loss can be solved by replacing the well head through the repairing operation.
Publication (bulletin) No.: CN206903638U, publication (public notice) day: 2018-01-19 provides a recirculation valve comprising a first tube and a second tube; the two ends of the first pipe body are respectively connected with an upper joint and a lower joint through internal threads; a plurality of circulation holes are uniformly distributed on the first pipe body along the radial direction; a first groove and a second groove are formed in the inner wall of the first pipe body, and the first groove is located between the upper joint and the plurality of circulation holes; the second groove is positioned between the first groove and the plurality of circulating holes; the second pipe body is sleeved in the first pipe body; the second pipe body is in sliding sealing connection with the first pipe body and the lower joint; the second pipe body can reciprocate in the first pipe body and the front half section of the lower joint; and a plurality of through holes are uniformly formed in the second pipe body close to one end of the lower connector along the radial direction, and a split ring which can be clamped with the first groove and the second groove is arranged on the outer wall of the second pipe body. The recycling valve can be opened by pressure and closed by throwing soluble balls for recycling.
Publication (bulletin) No.: CN202900148U, publication (public notice) day: 2013-04-24 discloses a kill string blanking plug applied to well control under an oil field production well. The device consists of a sitting joint and a blanking plug; is characterized in that: the central hole of the seating joint is of a step shape; the top of the main body is provided with a fishing head, the lower part of the main body is provided with an annular step which protrudes outwards, and the lower end of the annular step at the lower end of the main body is provided with a uniflow valve shell; the outer wall of the main body is sleeved with an elastic claw, a cone and a control spring; a check valve is disposed at the lower end of the central bore of the main body. The effect is as follows: the steel wire is not used for throwing, so that the external blowout of the well fluid of the pipe column is prevented; when well killing is required, positive pressure well killing operation can be carried out. Meanwhile, the plug is reliable in positioning and sealing, and well killing and fishing can be achieved. Can be used for inclined wells and horizontal wells.
Publication (bulletin) No.: CN211777318U, publication (public notice) day: 2020-10-27 discloses a wellhead lost circulation device for killing a well, wherein the wellhead device is provided with a casing outlet, an oil pipe and the upper part of the casing are connected with the lower part of the wellhead device, an annular cavity between the oil pipe and the casing is communicated with the casing outlet, a pulling pipe is inserted into a screw pipe, the lower part of the pulling pipe penetrates out of the lower end of the screw pipe, the external thread of the upper part of the pulling pipe is screwed on the internal thread of the upper part of the screw pipe, the lower part of a rotating nut is inserted into the upper part of a connecting seat, a plurality of connecting balls are placed between the rotating nut and the connecting seat from a placing hole on the upper side surface of the connecting seat, a check block blocks the outer side of the placing hole on the upper side surface of the connecting seat, the external thread of the screw pipe is screwed with the internal thread of the rotating nut, the cone is conical, the inner hole of the rubber cylinder is a conical hole, the conical hole of the rubber cylinder is matched with the outer wall of the cone, the rubber cylinder is sleeved outside the cone, and the upper part of the pulling pipe is connected with the lower part of the pulling pipe, the lower part of the solenoid, the rubber cylinder and the cone are placed in a wellhead device, the lower part of the connecting seat is connected with the upper part of the wellhead device, and the upper part of the lifting pipe is provided with a valve.
In a word, technical field, technical scheme and the technical problem that will solve and the beneficial effect who produces of above open the technique all with the utility model discloses inequality, to the utility model discloses more technical features and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above open technical document.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a differential kill valve to the above-mentioned defect that prior art exists, even seal upper portion at unwashable well Y341, drop into soluble ball during workover, open the slide valve, the oil jacket intercommunication realizes the circulation kill valve, can motionless tubular column trade the well head.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the differential kill valve comprises an outer pipe and a sliding valve;
the sliding valve is arranged in the outer pipe and mutually forms a sliding sealing pair, and meanwhile, the sliding valve is connected with the outer pipe through shear pins;
the outer wall of the sliding valve is provided with an annular groove, and the bottom of the annular groove is provided with a sliding valve radial through hole which is radially communicated;
the inner wall of the sliding valve is provided with a conical necking which is used as a valve seat for bearing a dissoluble valve ball;
the outer pipe is provided with a middle radial through hole for communicating the sliding valve with the annular groove after sliding.
Furthermore, the outer wall of the sliding valve is also provided with a convex ring groove for installing a convex ring, the position of the convex ring groove is lower than the position of the radial through hole of the sliding valve, and when the sliding valve reaches an upper dead point, the position of the convex ring groove is higher than the position of the radial through hole in the middle of the outer pipe.
Further, sealing rings are arranged on the outer wall and the inner wall of the sliding valve.
Further, the lower clutch is connected to the outer tube lower extreme, and the lower clutch up end is the spacing end of descending axial of slide valve axial simultaneously as, and the axial distance of terminal surface to lower clutch up end equals with the axial distance of middle part radial through-hole to slide valve radial through-hole under the slide valve.
Furthermore, the upper end of the outer pipe is connected with an upper joint, the inner wall of the upper half section of the sliding valve and the outer wall of the lower half section of the upper joint form a sealed sliding connection, and meanwhile, the outer wall of the upper joint and the inner wall of the sliding valve are both provided with limit steps for axial limit.
Furthermore, an annular cavity is formed between the outer wall of the lower half section of the upper joint and the inner wall of the upper half section of the outer pipe, namely the upper half section of the sliding valve and the annular cavity form sealed sliding connection.
Furthermore, the outer pipe is also provided with an upper radial through hole which is used for communicating the annular cavity and balancing the pressure of the annular cavity.
Furthermore, the outer pipe is provided with a threaded hole for installing a shear pin, and the outer wall of the sliding valve is provided with a small shear pin annular groove for inserting the inner end of the shear pin.
Compared with the prior art, the utility model following beneficial effect has:
the utility model relates to a differential kill-job valve device who uses in high pressure water injection well casing protection tubular column installs on high pressure resistant unwashable well Y341 packer. During well repair operation, the soluble valve ball is thrown in, the sliding valve is opened, the oil sleeve is communicated, circulating well killing is realized, and after shaft balance is established, oil gas in an oil layer cannot be sprayed out in the construction operation process, so that construction is facilitated. Once the well head leaks out the back, implement circulation kill-job and change the well head after, the valve ball dissolves, and the normal water injection is closed once more to the sliding valve, can not move the effective water injection of tubular column recovery high pressure water injection well, has practiced thrift the operating cost.
Drawings
Fig. 1 is a schematic cross-sectional view of the overall structure of a differential kill valve.
In the figure: 1-upper joint, 2-outer pipe, 3-sealing ring, 4-radial through hole, 5-shear pin, 6-sealing ring, 7-sliding valve, 8-annular groove, 9-radial through hole, 10-convex ring, 11-radial through hole, 12-sealing ring, 13-sealing ring, and 14-lower joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1, the present invention provides a technical solution:
the differential kill valve comprises an outer pipe 2 and a sliding valve 7;
the sliding valve is arranged in the outer pipe and mutually forms a sliding sealing pair, and meanwhile, the sliding valve is connected with the outer pipe through a shear pin 5;
the outer wall of the sliding valve is provided with an annular groove 8, and the bottom of the annular groove is provided with a sliding valve radial through hole 9 which is radially communicated;
the inner wall of the sliding valve is provided with a conical necking which is used as a valve seat for bearing a dissoluble valve ball;
the outer pipe is provided with a middle radial through hole 11 for communicating the sliding valve with the annular groove after sliding.
Furthermore, the outer wall of the sliding valve is also provided with a convex ring groove for installing the convex ring 10, the position of the convex ring groove is lower than the position of the radial through hole of the sliding valve, and when the sliding valve reaches an upper dead point, the position of the convex ring groove is higher than the position of the radial through hole in the middle of the outer pipe.
Further, sealing rings are arranged on the outer wall and the inner wall of the sliding valve.
Further, the lower end of the outer pipe is connected with a lower joint 14, the upper end face of the lower joint is simultaneously used as an axial limiting end for axial descending of the sliding valve, and the axial distance from the lower end face of the sliding valve to the upper end face of the lower joint is equal to the axial distance from the middle radial through hole to the radial through hole of the sliding valve.
Furthermore, the upper end of the outer pipe is connected with an upper joint 1, the inner wall of the upper half section of the sliding valve and the outer wall of the lower half section of the upper joint form a sealed sliding connection, and meanwhile, the outer wall of the upper joint and the inner wall of the sliding valve are both provided with limit steps for axial limit.
Furthermore, an annular cavity is formed between the outer wall of the lower half section of the upper joint and the inner wall of the upper half section of the outer pipe, namely the upper half section of the sliding valve and the annular cavity form sealed sliding connection.
Furthermore, the outer pipe is also provided with an upper radial through hole 4 for communicating the annular cavity and balancing the pressure of the annular cavity.
Furthermore, the outer pipe is provided with a threaded hole for installing a shear pin, and the outer wall of the sliding valve is provided with a small shear pin annular groove for inserting the inner end of the shear pin.
The upper end of the inner hole of the upper joint 1 is provided with an inner thread of an oil pipe, the lower part of the outer circle of the inner hole is in a step shape from bottom to top, the adjacent outer circle on the cylindrical surface with the smallest lowest end is provided with an external thread, two ends of the inner hole of the outer pipe 2 are respectively provided with an internal thread, the two threads are connected with the inner hole with the same diameter, the upper part of the outer circle is provided with a group of radial through holes 4, the group of internal thread through holes 4 are adjacent to the group of internal thread through holes for installing shear pins 5, the middle part of the inner hole is provided with a group of radial through holes 11, the inner hole of the sliding valve 7 is an upper part of the large diameter hole and is an adjacent middle diameter hole, the middle diameter hole is communicated with a lower adjacent conical surface, the lower end of the conical surface is connected with the small diameter hole, the lower end of the inner hole is provided with a group of ring-shaped built-in sealing rings 3, the ring-shaped groove built-in shear pins 5 are respectively arranged on the outer circle with the same diameter of the sliding valve 7 from top to bottom, a group of sealing rings 6, and an adjacent ring-shaped groove 8 is adjacent to the lower part of the sealing ring-shaped groove 6, a group of radial through holes 9 are connected in the annular groove 8 in an inscribed mode, a convex ring 10 is arranged in a convex groove adjacent to the lower portion of the annular groove 8, a group of sealing rings 12 are arranged on the lower portion of an excircle, two conical surfaces are arranged at two ends of an inner hole of a lower connector 14 and penetrate through the inner hole respectively, a cylindrical surface with a smaller diameter is arranged at the upper end of the excircle, an annular groove inner sealing ring 13 is arranged on the cylindrical surface, an external thread is adjacent to the lower portion of the cylindrical surface, and an oil pipe external thread is arranged at the lower end of the excircle.
The big footpath hole suit of the upper end of slide valve 7 is on the path excircle of 1 lower extreme of top connection, and outer tube 2 is on the excircle of slide valve 7 from the lower extreme suit of slide valve 7, and the internal thread of 2 upper ends of outer tube is connected with the external screw thread of top connection 1, and shear pin 5 packs into the screw thread through-hole of outer tube 2, and the internal thread of 2 lower extremes of outer tube is connected with the external screw thread of lower clutch 14.
The utility model relates to a install in a water injection instrument on high pressure resistant unwashable well Y341 packer upper portion of high pressure water injection well casing protection tubular column. The high pressure water injection well ubiquitous overflow, but the workover need put the overflow rear and can operate, and this device can be through throwing into soluble valve ball, shutoff slide valve inner chamber, and pressure increases, and the shear pin is cut off, and the slide valve whereabouts is opened, falls on the lower clutch top, and the radial through-hole at the middle part of outer tube aligns the intercommunication with the radial through-hole of slide valve this moment, realizes the oil jacket intercommunication, realizes the circulation kill-job, makes the intraformational oil gas of oil can not spout at the construction operation in-process, the construction of being convenient for. Once the well head leaks after, can drop into the valve ball, the well head is changed in the circulation kill-job, the valve ball dissolves the slide valve and closes once more, because oil pipe pressure is greater than oil jacket annular pressure after the shut-in, because the cross-section atress area is different about the slide valve, the slide valve lower part cross-section area is greater than upper portion cross-section area (shear pin 5 department), under the pressure, the lower part atress is greater than the upper portion atress, promote the slide valve rebound to initial position, close, normal water injection, the purpose that the high pressure water injection well does not move the tubular column and trades the well head has been realized.
Example 2:
referring to fig. 1, the present invention provides a technical solution:
the differential kill valve comprises an outer pipe 2 and a sliding valve 7;
the sliding valve is arranged in the outer pipe and mutually forms a sliding sealing pair, and meanwhile, the sliding valve is connected with the outer pipe through a shear pin 5;
the outer wall of the sliding valve is provided with an annular groove 8, and the bottom of the annular groove is provided with a sliding valve radial through hole 9 which is radially communicated;
the inner wall of the sliding valve is provided with a conical necking which is used as a valve seat for bearing a dissoluble valve ball;
the outer pipe is provided with a middle radial through hole 11 for communicating the sliding valve with the annular groove after sliding.
Furthermore, the outer wall of the sliding valve is also provided with a convex ring groove for installing the convex ring 10, the position of the convex ring groove is lower than the position of the radial through hole of the sliding valve, and when the sliding valve reaches an upper dead point, the position of the convex ring groove is higher than the position of the radial through hole in the middle of the outer pipe.
Example 3:
referring to fig. 1, the present invention provides a technical solution:
the differential kill valve comprises an outer pipe 2 and a sliding valve 7;
the sliding valve is arranged in the outer pipe and mutually forms a sliding sealing pair, and meanwhile, the sliding valve is connected with the outer pipe through a shear pin 5;
the outer wall of the sliding valve is provided with an annular groove 8, and the bottom of the annular groove is provided with a sliding valve radial through hole 9 which is radially communicated;
the inner wall of the sliding valve is provided with a conical necking which is used as a valve seat for bearing a dissoluble valve ball;
the outer pipe is provided with a middle radial through hole 11 for communicating the sliding valve with the annular groove after sliding.
Although fig. 1 is used for all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as the parts or structural features missing in the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic objects of the present invention can also be achieved, so all of these modified embodiments are within the scope of the present invention.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technology in the technical field, and are not described again. Such as welding, threaded connections, etc.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The differential kill valve is characterized by comprising an outer pipe and a sliding valve;
the sliding valve is arranged in the outer pipe and mutually forms a sliding sealing pair, and meanwhile, the sliding valve is connected with the outer pipe through shear pins;
the outer wall of the sliding valve is provided with an annular groove, and the bottom of the annular groove is provided with a sliding valve radial through hole which is radially communicated;
the inner wall of the sliding valve is provided with a conical necking which is used as a valve seat for bearing a dissoluble valve ball;
the outer pipe is provided with a middle radial through hole for communicating the sliding valve with the annular groove after sliding.
2. The differential kill valve of claim 1 wherein the outer wall of the spool valve further defines a male annular groove for receiving the male ring, the male annular groove being positioned lower than the radial through-hole of the spool valve, and wherein the male annular groove is positioned higher than the radial through-hole of the middle portion of the outer tube when the spool valve reaches the top dead center.
3. The differential kill valve of claim 2 wherein the outer and inner walls of the slip valve are fitted with seal rings.
4. The differential kill valve of claim 2 or 3 wherein the lower end of the outer tube is connected to the lower sub, the upper end of the lower sub also serves as an axial stop for the axial downward movement of the slide valve, and the axial distance from the lower end of the slide valve to the upper end of the lower sub is equal to the axial distance from the central radial through hole to the radial through hole of the slide valve.
5. The differential kill valve of claim 2 or 3, wherein the upper end of the outer pipe is connected to an upper joint, the inner wall of the upper half of the sliding valve and the outer wall of the lower half of the upper joint form a sealed sliding connection, and the outer wall of the upper joint and the inner wall of the sliding valve are provided with axial limiting steps.
6. The differential kill valve of claim 5 wherein an annular chamber is defined between the outer wall of the lower section of the upper connector and the inner wall of the upper section of the outer tube, i.e., the upper section of the slip valve is sealingly slidably connected to the annular chamber.
7. The differential kill valve of claim 6 wherein the outer tube further defines an upper radial through hole for communicating with the annular chamber to equalize the pressure in the annular chamber.
8. The differential kill valve of claim 2 or 3 wherein the outer tube defines a threaded bore for receiving a shear pin, and the outer wall of the slide valve defines a small annular shear pin recess for receiving the inner end of the shear pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120284576.0U CN214330563U (en) | 2021-02-01 | 2021-02-01 | Differential kill valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120284576.0U CN214330563U (en) | 2021-02-01 | 2021-02-01 | Differential kill valve |
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| Publication Number | Publication Date |
|---|---|
| CN214330563U true CN214330563U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120284576.0U Active CN214330563U (en) | 2021-02-01 | 2021-02-01 | Differential kill valve |
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| CN (1) | CN214330563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104434A (en) * | 2023-04-12 | 2023-05-12 | 合力（天津）能源科技股份有限公司 | Bypass straight-through switching valve for coiled tubing drilling |
-
2021
- 2021-02-01 CN CN202120284576.0U patent/CN214330563U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104434A (en) * | 2023-04-12 | 2023-05-12 | 合力（天津）能源科技股份有限公司 | Bypass straight-through switching valve for coiled tubing drilling |
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