CN210660025U - Sand setting type double-acting valve - Google Patents
Sand setting type double-acting valve Download PDFInfo
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- CN210660025U CN210660025U CN201921020665.3U CN201921020665U CN210660025U CN 210660025 U CN210660025 U CN 210660025U CN 201921020665 U CN201921020665 U CN 201921020665U CN 210660025 U CN210660025 U CN 210660025U
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Abstract
The utility model discloses a two effect valves of sand setting formula, including valve body, sealing mechanism, backwash device, sleeve, backwash device sets up central blind hole district and establishes the axial eccentric passageway that the axial is link up, and backwash device still sets up radial hole, installs radial bridging pipe in the radial hole, and this radial bridging pipe makes central blind hole district and backwash device outside intercommunication, the last port of central blind hole district is unblocked, lower port shutoff, the backwash device upper end is connected to sleeve lower extreme screw thread formula, the valve body is located inside the sleeve, and valve body outer wall and sleeve inner wall constitute first annular channel, the valve body is connected to the sealing mechanism upper end, and the last port of the blind hole district in center of backwash device is connected to lower extreme screw thread formula, constitute second annular channel between sealing mechanism and the sleeve. When water is injected, the blockage on the valve ball is avoided; when the well is backwashed, the well can be smoothly washed.
Description
Technical Field
The utility model belongs to the technical field of the supporting instrument of oil field water injection well water injection and specifically relates to a sand setting formula double action valve.
Background
With the exploitation of oil wells, the pressure of the oil reservoir formation is continuously reduced, and in order to make up for the underground deficit and recover or improve the pressure of the oil reservoir, water is injected to supplement the formation energy so as to obtain higher recovery ratio. In the middle and later stages of development, water absorption among different oil layers is unbalanced due to difference between longitudinal upper layers, and in order to further improve the development effect, a stratified water injection technology is adopted to ensure that each oil layer absorbs water uniformly so as to meet the requirement of oil reservoir development.
When the separate-layer water injection pipe column is put into the water injection well with pressure, in order to ensure the normal operation, the high-pressure water at the bottom of the well is prevented from being sprayed out through the pipe column, and the pipe column must be temporarily closed before the pipe column is put down. The common double-acting valve is mainly composed of a valve ball, a valve seat and a sealing plug, the sealing plug is fixed at the lower sealing part of the valve seat by a shear pin, the valve ball is supported at the upper part, after the common double-acting valve is put into a designed position in a well, the cement truck oil pipe is used for pressing, the shear pin is sheared, the sealing plug falls off, and the valve ball falls into the valve seat to play a role of a well-washing check valve.
The existing double-acting valve basically meets the requirements of operation and later-stage well washing of a pressurized water injection well, but in the water injection process, suspended matters, sand and other mechanical impurities in injected water directly fall onto a valve ball due to water flow and gravity, the valve ball is densely buried step by step under the action of water pressure, a well washing channel cannot be opened upwards again after reverse well washing is carried out again, and therefore the condition of unsuccessful well washing is achieved.
Therefore, there is a strong need for a double acting valve with a sand setting function to solve the above problems.
Application No.: 201820519134.8 is a hydraulic control well-flushing valve for water injection well, which can realize the forward and backward well-flushing of water injection well in petroleum industry under hydraulic control, especially suitable for water injection well of offshore oil platform. The well washing valve comprises an upper cylinder sleeve and a lower cylinder sleeve, wherein a liquid flow hole is formed in a cylinder body of the lower cylinder sleeve, the upper cylinder sleeve is in threaded connection with the lower cylinder sleeve, the upper portion of the upper cylinder sleeve is connected with an upper connector provided with a central hole, a hydraulic control valve core is arranged in the upper cylinder sleeve and the lower cylinder sleeve, and the liquid flow hole of the hydraulic control valve core can be communicated with the liquid flow hole in the lower cylinder sleeve. The utility model discloses use with annular space packer is supporting, can realize well-flushing and unblocking function under the hydraulic control, improve well-flushing effect, guarantee the sealing performance of packer packing element, reduction in production cost. The utility model discloses make simply, can open and close many times, long service life, low in manufacturing cost have the result of use that is showing.
Application No.: 201820298466.8 discloses a tubular column and a double-tube washable well separate zone water injection system, the tubular column is applied to separate zone water injection, including: the central pipe is provided with a first water injection flow channel and a second water injection flow channel; the outer side or the inner side of the central tube is provided with a first sliding mechanism; the outer side of the central tube is provided with a setting mechanism which is communicated with the central tube; the first sliding mechanism is provided with a first flow passage, the central pipe is provided with a second flow passage, and the second flow passage is provided with a water injection switch mechanism; the central pipe is used for setting the setting mechanism by utilizing water pressure or air pressure and injecting water into a first water injection layer through the first water injection flow channel; the first sliding mechanism is used for controlling the first flow channel to be communicated with the second flow channel, opening the water injection switch mechanism and injecting the water into a second water injection layer through the second water injection flow channel; wherein the setting mechanism is used for isolating the first water injection layer and the second water injection layer; and another tubular string.
Application No.: 201610903935.X relates to a backwash well settlement switch, which belongs to the technical field of special tools for water injection of oil field wells, and specifically relates to a liquid-solid separation device for backwash well treatment in a water injection process of a well string; including well-flushing valve, well-flushing nipple joint, sedimentation pipe, well-flushing valve, well-flushing nipple joint, sedimentation pipe threaded connection in proper order, the well-flushing nipple joint be the cylinder, well-flushing nipple joint upper portion be equipped with the counter bore and rather than the ascending feed liquor hole of slope of counter bore intercommunication, be equipped with on the well-flushing nipple joint body with the axial settlement through-hole of the valve barrel inner chamber intercommunication of well-flushing valve, the screwed plug is installed to the sedimentation pipe bottom. When the flushing valve is used, the lower end of the flushing valve is connected with the flushing nipple and is communicated with the water injection pipe column at the upper part of the flushing nipple to form a sedimentation through hole, sediment in the water injection pipe column is sedimentated into the sedimentation pipe connected with the lower part of the flushing nipple, the sediment is prevented from being accumulated on the ball seat of the flushing valve, and the problems that the flushing valve is not tightly seated and the water injection pipe column is lost are effectively solved.
Application No.: 03269308.7 discloses a reverse flushing device of mechanical sand-control water injection well used in petroleum industry, which is used for the water injection well of mechanical sand control, especially the water injection well of multilayer loose sandstone reservoir using mechanical sand-control layered water injection equipment. The device is provided with a water injection channel and consists of a well washing valve and a well washing valve core, wherein the well washing valve core is arranged in the well washing valve to form a reverse well washing channel. The utility model overcomes stay the less unfavorable factor of well casing post internal diameter behind the mechanical sand control, realized dividing the backwash well of two-layer water injection well, the stratified water injection effect is showing. Thereby prolonging the service life of the layered water injection pipe column, reducing the operation times and improving the water injection development effect.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sand setting type double-acting valve, when water is injected, a valve ball plays a sealing role, when mechanical impurities in a water injection pipe column fall down, the mechanical impurities fall into a sand setting tail pipe below through a gap between a conical cap and a sleeve and an annular channel of a backwashing device, and the blockage on the valve ball is avoided; when the well is backwashed, the well-flushing liquid passes through the radial holes of the backwashing device and flushes the valve ball, so that the well can be smoothly washed.
In order to achieve the purpose, the utility model discloses a following technical scheme, a sand setting formula double-acting valve, including valve body, sealing mechanism, backwash device, sleeve, backwash device sets up central blind hole room and establishes the axial eccentric passageway that the axial is link up, and backwash device still sets up radial hole, installs radial bridging pipe in the radial hole, and this radial bridging pipe makes central blind hole room and backwash device outside intercommunication, the last port of central blind hole room is unblocked, and the lower port shutoff, the backwash device upper end is connected to the sleeve lower extreme screw thread formula, the valve body is located the sleeve inside, and valve body outer wall and sleeve inner wall constitute first annular space passageway, the sealing mechanism upper end is connected the valve body, and the upper port of central blind hole room of backwash device is connected to the lower extreme screw thread formula, constitute second annular space passageway between sealing mechanism and the sleeve, first annular space passageway, The second annular hollow channel and the axial eccentric channel are communicated in sequence.
The valve body includes valve casing, valve ball, disk seat, the valve casing upper end is solid toper cap, and the valve pocket is seted up to valve casing inside, and the valve casing sets up the side hole of radially having a perfect understanding, and the side hole of advancing makes first annular space passageway and valve pocket intercommunication, and the disk seat is fixed at the valve pocket inner wall, and the disk seat is less than the side and advances the hole, places the valve ball in the valve pocket, and the valve ball diameter is greater than the disk seat internal diameter.
The sealing mechanism comprises a cylinder sleeve and a sealing plug, the upper end of the cylinder sleeve is in threaded connection with the lower end of the valve casing, the lower end of the cylinder sleeve is in threaded connection with an upper port of a central blind hole cavity of the backwashing device, the sealing plug is installed in the cylinder sleeve, the outer wall of the sealing plug is in sliding sealed connection with the inner wall of the cylinder sleeve, an upward ejector rod is arranged in the center of the upper surface of the sealing plug, the ejector rod can extend into the valve cavity to jack a valve ball, and the sealing plug is fixed on the inner wall.
The inner wall of the cylinder sleeve is provided with an inner limiting table capable of preventing the sealing plug from being separated upwards.
The length of the ejector rod is larger than or equal to the axial length of the valve cavity.
The inner diameter of the central blind hole cavity is larger than that of the cylinder sleeve.
The axial distance from the lowest end of the radial hole of the backwashing device to the bottom end in the cavity of the central blind hole is greater than the axial height of the sealing plug.
The inner wall of the upper port of the sleeve is provided with an internal thread for connecting an oil pipe, so that the oil pipe is communicated with the first annular channel, the lower end of the backwashing device is connected with the lower joint in a threaded manner, so that the axial eccentric channel is communicated with the lower joint, and the outer wall of the lower end of the lower joint is provided with an external thread for connecting a sand setting tail pipe.
Compared with the prior art, the utility model following beneficial effect has:
the utility model is connected to the bottom of the separate layer water injection pipe column, in the process of putting into the well, high pressure water in the well can not be sprayed out through the pipe column due to the action of the sealing plug, after the high pressure water is put into the designed position in the well, the pressure is applied to the oil pipe of the cement truck, the upper end surface of the sealing plug is acted, the lower end surface of the sealing plug is the center hole of the backwashing device, and the center hole is communicated with the outside through a radial hole, so that the shear pin is cut by the pressure difference of the upper end surface and the lower end surface, the sealing; when water is injected, the valve ball plays a sealing role, and mechanical impurities in the water injection pipe column fall into the lower sand settling tail pipe through the gap between the conical cap and the sleeve and the annular channel of the backwashing device when falling, so that the blockage on the valve ball is avoided; when the well is backwashed, the well-flushing liquid passes through the radial holes of the backwashing device and flushes the valve ball, so that the well can be smoothly washed.
Drawings
Fig. 1 is a schematic structural view of a sand setting type double-acting valve of the present invention;
3 fig. 32 3 is 3 a 3 sectional 3 view 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3
In the figure: 1. the device comprises a sleeve, 2 parts of a conical cap, 3 parts of a valve ball, 4 parts of an ejector rod, 5 parts of a valve seat, 6 parts of a shear pin, 7 parts of a cylinder sleeve, 8 parts of a backwashing device, 9 parts of a sealing ring, 10 parts of a lower joint and 11 parts of a sealing plug;
13. a central blind bore cavity; 14. an axial eccentric channel; 12. a radial bridge pipe.
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.
Referring to fig. 1 to 2, the present invention provides a technical solution:
a sand setting type double-acting valve comprises a valve body, a sealing mechanism, a backwashing device and a sleeve, wherein the backwashing device 8 is provided with a central blind hole cavity 13 and an axial eccentric channel 14 which is axially communicated, the backwashing device is also provided with a radial hole, a radial bridging pipe 12 is arranged in the radial hole, the radial bridging pipe 12 enables the central blind hole cavity 13 to be communicated with the outside of the backwashing device, the upper port of the central blind hole cavity is unblocked, the lower port is blocked, of course, the backwashing device can also be regarded as two sleeved cylinders, the inner cylinder is a blind cylinder, the outer cylinder is a through cylinder, the space between the two cylinders is equivalent to the axial eccentric channel 14, the two cylinders are simultaneously provided with corresponding radial holes, then the corresponding radial holes are welded and communicated by the radial bridging pipes 12 to form an integral structure, so that the inside of the inner cylinder is not communicated with the inside of the outer cylinder, but the inside of the inner cylinder is communicated with the outside of the outer cylinder through the radial bridging pipes. As shown in the figure, 12 radial holes can be densely distributed, and 12 corresponding radial bridging pipes are also arranged. The backwashing device is characterized in that the upper end of the backwashing device is connected with the lower end of the sleeve 1 in a threaded manner, the valve body is positioned inside the sleeve 1, a first annular channel is formed by the outer wall of the valve body and the inner wall of the sleeve, the upper end of the sealing mechanism is connected with the valve body, the lower end of the sealing mechanism is connected with the upper port of a central blind hole cavity of the backwashing device in a threaded manner, a second annular channel is formed between the sealing mechanism and the sleeve, and the first annular channel, the second annular channel and the axial eccentric channel are sequentially communicated.
The strength of the 12 radial bridging pipes is enough to support the valve body and the sealing mechanism, and the 12 radial bridging pipes can be symmetrically arranged opposite to each other to increase the support strength.
The valve body includes valve casing, valve ball 3, disk seat 5, the valve casing upper end is solid toper cap 2, and the valve pocket is seted up to valve casing inside, and the valve casing sets up the side hole of advancing that radially link up, and the side hole of advancing makes first annular space passageway and valve pocket intercommunication, and disk seat 5 is fixed at the valve pocket inner wall, and the disk seat is less than the side and advances the hole, places valve ball 3 in the valve pocket, and the valve ball diameter is greater than the disk seat internal diameter.
The sealing mechanism comprises a cylinder sleeve 7 and a sealing plug 11, the upper end of the cylinder sleeve 7 is connected with the lower end of a valve shell in a threaded mode, the lower end of the cylinder sleeve is connected with an upper port of a central blind hole cavity of the backwashing device in a threaded mode, the sealing plug is installed in the cylinder sleeve, the outer wall of the sealing plug is connected with the inner wall of the cylinder sleeve in a sliding sealing mode, an upward ejector rod 4 is welded at the center of the upper surface of the sealing plug 11, the ejector rod can stretch into the valve cavity to abut against a valve ball 3, and the sealing plug is.
The inner wall of the cylinder sleeve is provided with an inner limiting table capable of preventing the sealing plug from being separated upwards.
The length of the ejector rod is larger than or equal to the axial length of the valve cavity.
The inner diameter of the central blind hole cavity is larger than that of the cylinder sleeve.
The axial distance from the lowest end of the radial hole of the backwashing device to the bottom end in the cavity of the central blind hole is greater than the axial height of the sealing plug.
The inner wall of the upper port of the sleeve is provided with an internal thread for connecting an oil pipe, so that the oil pipe is communicated with the first annular channel, the lower end of the backwashing device is connected with the lower joint 10 in a threaded manner, so that the axial eccentric channel is communicated with the lower joint, and the outer wall of the lower end of the lower joint is provided with an external thread for connecting a sand setting tail pipe.
The sleeve 1 is connected with the backwashing device 8 through threads, and the upper part of the sleeve is provided with an oil pipe internal thread; the backwashing device 8 is connected with the lower connector 10 through threads, an oil pipe external thread is arranged below the lower connector, the sand setting tail pipes with different lengths can be connected according to requirements, and the bottoms of the sand setting tail pipes are closed; the backwashing device 8 is provided with an axial center hole, and the lower part of the axial center hole is closed; the backwashing device 8 is provided with an axial eccentric channel which is communicated with the backwashing device up and down; the backwashing device 8 is provided with a radial hole which is communicated with the outside of the backwashing device and the central hole; the conical cap 1 is connected with the cylinder sleeve 7 through threads; the conical cap 7 is provided with a communicating hole which leads the conical cap to be communicated internally and externally; the valve ball 3 is placed in the valve cavity of the conical cap 1, the valve seat 5 is placed below the valve cavity of the conical cap 1, and the gap between the outer side of the valve seat 5 and the conical cap 1 keeps sealed; the cylinder sleeve 7 is connected with a backwashing device through threads; a sealing plug is placed in the cylinder sleeve 7, the upper end face of the sealing plug is close to the step of the inner wall of the upper part of the cylinder sleeve 7, a mandril 4 is arranged at the center of the upper end face of the sealing plug, and the mandril is fixed in the cylinder sleeve 7 through two shear pins 6; the upper part of the sealing plug supports the injection valve ball 3; and sealing rings are arranged at the threaded connection parts between the adjacent parts.
The utility model discloses connect in the bottom of layering water injection tubular column, in the process of going into the well, because the effect of sealing plug, make the interior high pressure water of backwash device outside can not spout through the tubular column (the tubular column is the dual-purpose valve of the utility model discloses itself), after going into the design position in the well, suppress in the cement truck oil pipe, hydraulic pressure is used in the reducing mesa up end of sealing plug, because the sealing plug down end is backwash device 8 centre bores, the centre bore communicates with the outside through radial hole again, consequently cuts short shear pin 6 through the upper and lower terminal surface pressure differential, makes the sealing plug fall into backwash device 8 below, valve ball 3 falls into on disk seat 5; when water is injected, the valve ball 3 plays a sealing role, mechanical impurities in the water injection pipe column fall into the lower sand settling tail pipe through the gap between the conical cap 2 and the sleeve 1 and the axial eccentric channel of the backwashing device 8 when falling, and the blockage on the valve ball 3 is avoided; when the well is backwashed, the well-flushing liquid passes through the radial holes of the backwashing device 8 and flushes the valve ball 3, so that the well can be smoothly washed.
In the description of the present invention, it should be understood that the orientation indication or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A sand setting type double-acting valve comprises a valve body, a sealing mechanism, a backwashing device and a sleeve, it is characterized in that the backwashing device is provided with a central blind hole cavity and an axial eccentric channel which is axially communicated, and is also provided with a radial hole in which a radial bridging pipe is arranged, the radial bridging pipe enables the central blind hole cavity to be communicated with the outside of the backwashing device, the upper port of the central blind hole cavity is unblocked, the lower port is blocked, the lower end of the sleeve is connected with the upper end of the backwashing device in a threaded manner, the valve body is positioned in the sleeve, and the outer wall of the valve body and the inner wall of the sleeve form a first annular channel, the upper end of the sealing mechanism is connected with the valve body, the lower end of the sealing mechanism is connected with the upper port of a central blind hole cavity of the backwashing device in a screw thread manner, and a second annular passage is formed between the sealing mechanism and the sleeve, and the first annular passage, the second annular passage and the axial eccentric passage are communicated in sequence.
2. The sand setting type double-acting valve according to claim 1, wherein the valve body comprises a valve casing, a valve ball and a valve seat, the upper end of the valve casing is a solid conical cap, a valve cavity is formed inside the valve casing, a side inlet hole which is radially communicated is formed in the valve casing, the first annular passage is communicated with the valve cavity through the side inlet hole, the valve seat is fixed on the inner wall of the valve cavity and is lower than the side inlet hole, the valve ball is placed in the valve cavity, and the diameter of the valve ball is larger than the inner diameter of the valve seat.
3. The sand setting type double-acting valve according to claim 2, wherein the sealing mechanism comprises a cylinder sleeve and a sealing plug, the upper end of the cylinder sleeve is connected with the lower end of the valve casing in a screw thread mode, the lower end of the cylinder sleeve is connected with an upper port of a central blind hole cavity of the backwashing device in a screw thread mode, the sealing plug is installed in the cylinder sleeve, the outer wall of the sealing plug is connected with the inner wall of the cylinder sleeve in a sliding sealing mode, an upward ejector rod is arranged in the center of the upper surface of the sealing plug, the ejector rod can extend into the valve cavity to eject the valve ball, and the sealing plug is fixed.
4. A double acting valve as claimed in claim 3 wherein the inner wall of the cylinder liner is provided with an internal stop which prevents the sealing plug from escaping upwards.
5. A double acting sand setting valve according to claim 3 or 4 wherein the length of the ram is equal to or greater than the axial length of the valve chamber.
6. A double acting sand setting valve according to claim 3 or 4 wherein the central blind bore internal diameter is greater than the bore liner internal diameter.
7. A double acting valve as claimed in claim 3 or claim 4, wherein the axial distance from the lowermost end of the radial bore of the backflushing means to the bottom end of the central blind bore cavity is greater than the axial height of the sealing plug.
8. A sand setting type double-acting valve according to claim 3 or 4, characterized in that the inner wall of the upper port of the sleeve is provided with an internal thread for connecting an oil pipe, so that the oil pipe is communicated with the first annular channel, the lower end of the backwashing device is in threaded connection with the lower joint, so that the axial eccentric channel is communicated with the lower joint, and the outer wall of the lower end of the lower joint is provided with an external thread for connecting a sand setting tail pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921020665.3U CN210660025U (en) | 2019-07-01 | 2019-07-01 | Sand setting type double-acting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921020665.3U CN210660025U (en) | 2019-07-01 | 2019-07-01 | Sand setting type double-acting valve |
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| Publication Number | Publication Date |
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| CN210660025U true CN210660025U (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921020665.3U Active CN210660025U (en) | 2019-07-01 | 2019-07-01 | Sand setting type double-acting valve |
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| CN (1) | CN210660025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753804A (en) * | 2022-04-08 | 2022-07-15 | 中国石油化工股份有限公司 | Ash injection valve and ash injection pipe column for overflow well |
-
2019
- 2019-07-01 CN CN201921020665.3U patent/CN210660025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114753804A (en) * | 2022-04-08 | 2022-07-15 | 中国石油化工股份有限公司 | Ash injection valve and ash injection pipe column for overflow well |
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