CN110735615A - Two-way anti-back-flow valve - Google Patents
Two-way anti-back-flow valve Download PDFInfo
- Publication number
- CN110735615A CN110735615A CN201810796437.9A CN201810796437A CN110735615A CN 110735615 A CN110735615 A CN 110735615A CN 201810796437 A CN201810796437 A CN 201810796437A CN 110735615 A CN110735615 A CN 110735615A
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- China
- Prior art keywords
- channeling
- outer cylinder
- inner cylinder
- way anti
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 16
- 230000005465 channeling Effects 0.000 claims description 9
- 238000004080 punching Methods 0.000 claims 2
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 239000003921 oil Substances 0.000 description 11
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 238000003825 pressing Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000002791 soaking Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
- E21B43/168—Injecting a gaseous medium
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to an two-way anti-channeling valve, which belongs to the technical field of machinery in the petroleum industry and comprises an outer cylinder, an inner cylinder arranged in the outer cylinder, a connecting piece which is hermetically connected with the outer cylinder and is arranged on the inner cylinder, and an annular cavity is formed between the outer cylinder and the inner cylinder, and a valve body arranged in the outer cylinder, wherein the valve body is closed by pressurizing in the annular cavity and opened by pressurizing in the inner cylinder.
Description
Technical Field
The invention relates to an bi-pass anti-channeling valve, belonging to the technical field of machinery in the petroleum industry.
Background
In some extra-deep, high-pressure heavy oil reservoirs, after adopting several kinds of modes such as depletion type, water injection oil replacement type and initial water injection, the cycle effect will be worsened gradually with the increase of water injection turns, thus, the number of failure wells increases rapidly, but still there is a large amount of residual oil buried underground and difficult to use, in order to step to recover the productivity of oil well, improve the exploitation benefit of oil field, through extra-deep seam cave type carbonate rock reservoir nitrogen gas injection huff and puff to improve the recovery efficiency technology, can reduce the old well natural decrement and improve the economic benefit.
Disclosure of Invention
Aiming at the problems, the invention provides bi-pass anti-channeling valves, which can prevent the channeling of injected gas in the stewing process, so that the injected gas can better interact with crude oil, and the oil recovery rate is improved.
The invention provides two-way anti-channeling valves, which comprise:
an outer cylinder is arranged on the outer cylinder,
the inner cylinder is arranged in the outer cylinder, a connecting piece which is connected with the outer cylinder in a sealing way is arranged on the inner cylinder, and an annular cavity is formed between the outer cylinder and the inner cylinder; and
a valve body disposed within the outer barrel, the valve body configured to be closable by pressurization within the annular cavity and openable by pressurization within the inner barrel.
The invention is further improved in that the connecting piece is arranged at the end of the inner cylinder, the other end of the inner cylinder is connected with the valve body, and a piston device which is in sliding connection with the inner cylinder is arranged in the annular cavity and is configured to move along with the filling pressure of the annular cavity so as to push the valve body to close.
The improvement is that the valve body comprises a valve flap seat arranged in the outer cylinder and a valve flap hinged on the valve flap seat through a valve flap shaft;
wherein the valve flap is configured to be rotatable on the valve flap shaft to selectively open or close the inner barrel.
The improvement of is that the piston device is connected with the inner cylinder through an elastic element, the end of the piston device is connected with the valve flap shaft through a connecting rod, and the piston device moves through the elastic element and the pressure in the annular cavity, so that the connecting rod drives the valve flap shaft to rotate to drive the valve flap to open or close.
The improvement is that the outer wall of the inner cylinder is provided with a boss, the elastic element is a spring, the end of the spring is connected with the boss, and the end of the spring is connected with the piston device.
The invention is further improved in that the outer cylinder is provided with a pressing hole communicated with the annular cavity, and the pressing hole is provided with a plug buckle.
The improvement of the invention in step is that a snap spring is arranged on the piston device, and a snap spring groove matched with the snap spring is arranged on the outer wall of the inner cylinder.
A further improvement of the invention is that the piston means slidingly and sealingly connects the outer barrel and the inner barrel through a seal pack channeling agent.
The invention is further improved in that the end of the outer cylinder is provided with an upper joint, and the end is provided with a lower joint.
A further improvement in accordance with the present invention is that the upper and lower fittings are each threadably connected to the outer barrel.
Compared with the prior art, the invention has the advantages that:
the bi-pass anti-channeling valves can be applied to the gas injection oil displacement technology, can reduce the natural decrement of an old well, and have obvious economic benefit, can prevent the backflow of injected gas in the soaking process through the bi-pass anti-channeling valves, and enable the injected gas to better interact with crude oil, so that the step improves the oil extraction rate, and reduces the pressure of an oil pipe and a well head, so that the equipment is safer, and the service life of oil extraction equipment is prolonged.
Drawings
Fig. 1 is a structural schematic view of a two-way anti-channeling valve according to embodiments of the present invention, showing a state in which a valve body is opened;
fig. 2 is a structural schematic view of a two-way anti-channeling valve according to embodiments of the present invention, showing a state in which a valve body is closed.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. the sealing and channeling sealing device comprises an outer cylinder, 2, an inner cylinder, 3, a valve body, 4, a piston device, 11, an upper joint, 12, a lower joint, 13, a pressurizing cavity, 14, a plug buckle, 21, a connecting piece, 22, an annular cavity, 23, an elastic piece, 24, a boss, 25, a clamp spring groove, 31, a valve clack seat, 32, a valve clack, 33, a valve clack shaft, 41, a clamp spring, 42, a connecting rod, 43 and a sealing and channeling sealing combination agent.
Detailed Description
The invention will now be described in further detail with reference to the drawings.
Fig. 1 schematically shows embodiments of the two-way anti-channeling valve according to the present invention, which can prevent the back-channeling of injected gas during the soaking process, so that the injected gas can better interact with crude oil, thereby further increasing the oil recovery rate by steps.
As shown in fig. 1, the two-way anti-channeling valve of this embodiment includes an outer cylinder 1, the outer cylinder 1 is cylindrical, an inner cylinder 2 is sleeved in the outer cylinder 1, a connecting member 21 is disposed on the inner cylinder 2, the inner cylinder 2 passes through the connecting member 21 and the outer cylinder 1, a sealing ring is disposed on the connecting member 21, the connecting member 21 connects the inner cylinder 2 and the outer cylinder 1 in a sealing manner, an annular cavity 22 is formed between the outer cylinder 1 and the inner cylinder 2, the annular cavity 22 is provided with a pressurizable inlet, a valve body 3 is further disposed in the outer cylinder 1, and the valve body 3 is configured to be capable of being closed by pressurizing in the annular cavity 22 and opened by pressurizing in the inner cylinder 2.
In the case of using the two-way anti-channeling valve according to the present embodiment, the valve body 3 is in an open state in an initial state, and is pressurized in the annular chamber 22 during a soaking process, thereby closing the valve body 3. Thus, the injected gas can be prevented from flowing back, so that the injected gas can better interact with the original gas, and the oil yield is improved.
In embodiments, the connecting piece 21 is arranged at the end of the inner cylinder 2, the other end of the inner cylinder 2 is connected with the valve body 3, therefore, the end of the annular cavity 22 is sealed by the connecting piece 21, the other end is sealed by the valve body 3, a piston device 4 is arranged in the annular cavity 22, the piston device 4 can be connected with the inner cylinder 2 and the outer cylinder 1 in a sliding mode, the piston device 4 slides in the annular cavity 22 and pushes the valve body 3 to be opened and closed, and when the annular cavity 22 is filled with pressure, the piston device 4 moves to push the valve body 3 to be closed.
In the case of using the two-way anti-channeling valve according to the present embodiment, the valve body 3 is initially in an open state (as shown in fig. 1), and after the filling of pressure into the annular chamber 22 after the completion of the gas injection, the filling of pressure pushes the piston device 4 to move. The piston means 4, when displaced, pushes the valve body 3 and causes the valve body 3 to close (as shown in figure 2). When the soaking is completed, the inner tube is filled with pressure, which is to reopen the valve body 3.
In embodiments, the valve body 3 comprises a valve flap seat 31 arranged in the outer cylinder 1 and a valve flap 32 hinged on the valve flap seat 31 through a valve flap shaft 33, wherein the valve flap 32 is configured to rotate on the valve flap shaft 33 so as to selectively open or close the inner cylinder 2, in the embodiment, the outer wall of the valve flap seat 31 is jointed with the inner wall of the outer cylinder 1, the valve flap 32 is circular and jointed with the end part of the inner cylinder 2, and a sealing part connected with the end part of the inner cylinder 2 is arranged on the valve flap 32.
In embodiments, the piston device 4 is connected with the inner cylinder 2 through an elastic element 23, the elastic element 23 has elasticity of , the end part of the piston device 4 is connected with the valve flap shaft 33 through a connecting rod 42, and the piston device 4 is moved through the elastic element 23 and the pressure in the annular cavity 22, so that the connecting rod 42 drives the valve flap shaft 33 to rotate to drive the valve flap 32 to open or close.
In the two-way anti-channeling valve according to the present embodiment, the elastic member 23 provides a pulling force to the piston device 4 in the initial state, so that the piston device 4 is located away from the valve body 3, and the valve flap 32 is in the open state. When the annular chamber 22 is charged with pressure, the pressure in the annular chamber 22 pushes the piston device 4 to move against the pulling force of the elastic element 23 and drives the connecting rod 42 to move, so that the valve flap 32 is closed.
In the embodiments, the outer wall of the inner cylinder 2 is provided with an annular boss 24. in the present embodiment, the elastic member 23 is a spring, the end of the spring is connected to the boss 24, and the end is connected to the piston device 4. preferably, the piston device 4 is provided with a protruding step structure, and the spring is fixed on the step structure.
In embodiments, the outer cylinder 1 is provided with a plurality of pressing holes 13 communicated with the annular cavity 22, the pressing holes 13 are provided with plug fasteners 14, the pressing holes 13 can be or a plurality of pressing holes, and pressure can enter the annular cavity 22 through the pressing holes 13 when pressing in the annular cavity.
In embodiments, as shown in fig. 1, a snap spring 41 is provided on the piston device 4, a snap spring groove 25 is provided on the outer wall of the inner cylinder 2, which cooperates with the snap spring 41, when pressure is filled into the annular cavity 22 after gas injection is completed, the piston device 4 starts to move and pushes the valve body 3 to close the valve clack 32, at which time, the snap spring 41 moves to the position of the snap spring groove 25, and the snap spring 41 extends into the snap spring groove 25, thereby playing a role of limiting.
In preferred embodiments, the inner wall of the piston device 4 is connected with the inner cylinder 2 by the combined channeling sealing agent, and the piston device 4 and the inner cylinder 2 are connected in a sliding and sealing way by the combined channeling sealing agent, the outer wall of the piston device 4 is also connected with the inner wall of the outer cylinder 1 by the combined channeling sealing agent 43, and the piston device 4 and the outer cylinder 1 are connected in a sliding and sealing way by the combined channeling sealing agent.
In embodiments, an upper connector 11 is disposed at the end of the outer cylinder 1, the upper connector 11 is located at the upper end position when the two-way anti-channeling valve operates in the present embodiment, the upper connector 11 is cylindrical, the outer diameter of the upper connector 11 matches with that of the outer cylinder 1, and a tapered cavity is disposed inside the upper connector for connecting with other components, a lower connector 12 is disposed at the other end of the outer cylinder 1, the lower connector 12 is located at the lower end position when the two-way anti-channeling valve operates in the present embodiment, the outer wall of the lower connector 12 is tapered for connecting with other downstream components, and in the present embodiment, the azimuthal names of "up" and "down" of the upper connector 11 and the lower connector 12 are determined according to the operating state of the two-way anti-channeling valve in the present embodiment.
In embodiments, the upper joint 11 and the lower joint 12 are respectively connected with the outer cylinder 1 through threads, are connected stably in a threaded connection mode , are not prone to falling off to influence work, and are convenient to disassemble and assemble in another , and maintenance or component replacement is convenient.
When the two-way anti-channeling valve according to the embodiment is used, the valve clack 32 of the valve body 3 can close and open the valve clack 32 through annular pressurization and oil pipe pressurization, so that the requirement of an injection production integration process can be met, in an initial state, as shown in fig. 1, the inner cylinder 2 is connected with the piston device 4 through the elastic piece 23, and the valve clack 32 is kept at an open position through the tensile force of the spring, the piston device 4 is movably connected with the connecting rod 42, the connecting rod 42 is movably connected with the valve clack 32, and the spring force is transmitted to the valve clack 32 through the connecting rod 42, when the annular pressurization is completed after the gas injection, as shown in fig. 2, if 5MPa of pressure is added, the annular pressure pushes the piston device 4 to move, the clamp spring 41 returns to the clamp spring groove 25 for positioning, the piston device 4 pushes the valve clack 32 to be at the closed position through the connecting rod 42, and finally, when 3MPa of pressure is added to the valve clack 32, the valve clack 32 acts on the piston.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1, kind of two-way anti-channeling valve that returns, its characterized in that includes:
an outer cylinder (1),
the inner cylinder (2) is arranged in the outer cylinder (1), a connecting piece (21) which is connected with the outer cylinder (1) in a sealing mode is arranged on the inner cylinder (2), and an annular cavity (22) is formed between the outer cylinder (1) and the inner cylinder (2); and
a valve body (3) arranged inside the outer cylinder (1), the valve body (3) being configured to be closable by pressurisation inside the annular chamber (22) and to be opened by pressurisation inside the inner cylinder (2).
2. Two-way anti-channeling valve according to claim 1, characterized in that said connecting piece (21) is arranged at the end of said inner cylinder (2), the other end of said inner cylinder (2) being connected to said valve body (3), a piston device (4) being arranged in said annular chamber (22) in sliding connection with said inner cylinder (2), said piston device (4) being configured to be able to move with the filling pressure of said annular chamber (22) and thus to push the valve body (3) closed.
3. Two-way anti-channeling valve according to claim 2, characterized in that said valve body (3) comprises a flap seat (31) provided inside said outer cylinder (1), and a flap (32) hinged on said flap seat (31) by a flap shaft (33);
wherein the flap (32) is configured to be rotatable on the flap shaft (33) to selectively open or close the inner barrel (2).
4. Two-way anti-channeling valve according to claim 3, characterized in that said piston means (4) is connected to said inner cylinder (2) by means of an elastic member (23), the end of said piston means (4) being connected to said flap shaft (33) by means of a connecting rod (42); the piston device (4) is moved by the elastic piece (23) and the pressure in the annular cavity (22), so that the connecting rod (42) drives the valve flap shaft (33) to rotate to drive the valve flap (32) to open or close.
5. Two-way anti-channeling valve according to , characterized in that a boss (24) is provided on the outer wall of the inner barrel (2) and the elastic member (23) is a spring, end of which is connected to the boss (24) and end of which is connected to the piston means (4).
6. Two-way anti-channeling valve according to characterized in that, a punching hole (13) that communicates with said annular chamber (22) is provided on said outer cylinder (1), a plug (14) is provided on said punching hole (13).
7. Two-way anti-channeling valve according to claim 6, characterized in that said piston means (4) is provided with a circlip (41); and a clamp spring groove (25) matched with the clamp spring (41) is formed in the outer wall of the inner cylinder (2).
8. Two-way anti-channeling valve according to claim 7, characterized in that said piston means (4) slidingly and sealingly connects said outer cartridge (1) and said inner cartridge (2) through a sealing combination channeling agent (43).
9. Two-way anti-channeling valve according to , characterized in that end of the outer cylinder (1) is provided with an upper joint (11) and the other end is provided with a lower joint (12).
10. Two-way anti-channeling valve according to claim 9, characterized in that said upper joint (11) and said lower joint (12) are respectively connected to said outer cylinder (1) by means of a screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796437.9A CN110735615A (en) | 2018-07-19 | 2018-07-19 | Two-way anti-back-flow valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796437.9A CN110735615A (en) | 2018-07-19 | 2018-07-19 | Two-way anti-back-flow valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110735615A true CN110735615A (en) | 2020-01-31 |
Family
ID=69235522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810796437.9A Pending CN110735615A (en) | 2018-07-19 | 2018-07-19 | Two-way anti-back-flow valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110735615A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951338A (en) * | 1974-07-15 | 1976-04-20 | Standard Oil Company (Indiana) | Heat-sensitive subsurface safety valve |
| US4103744A (en) * | 1977-08-04 | 1978-08-01 | Baker International Corporation | Safety valve and ball type equalizing valve |
| SU939731A1 (en) * | 1980-09-09 | 1982-06-30 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Apparatus for shutting-off a drill string |
| CN2485416Y (en) * | 2001-04-24 | 2002-04-10 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Switch on tubing bottom |
| CN201062508Y (en) * | 2007-07-18 | 2008-05-21 | 胡定清 | Subsurface safety valve having plunger type compensation valve |
| CN202914036U (en) * | 2012-10-31 | 2013-05-01 | 中国石油集团川庆钻探工程有限公司 | Hermetic seal subsurface safety valve of side hole control valve |
| CN202954786U (en) * | 2012-12-11 | 2013-05-29 | 中国石油化工股份有限公司 | Oil pipe isolation valve |
| CN205823234U (en) * | 2016-07-08 | 2016-12-21 | 北京博德世达石油技术股份有限公司 | A kind of relief valve |
| CN107191155A (en) * | 2017-04-14 | 2017-09-22 | 博德世达（天津）能源科技有限公司 | High temperature storm valve |
| CN206860145U (en) * | 2017-06-05 | 2018-01-09 | 新疆罡拓能源科技有限公司 | A kind of underground switching valve |
-
2018
- 2018-07-19 CN CN201810796437.9A patent/CN110735615A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951338A (en) * | 1974-07-15 | 1976-04-20 | Standard Oil Company (Indiana) | Heat-sensitive subsurface safety valve |
| US4103744A (en) * | 1977-08-04 | 1978-08-01 | Baker International Corporation | Safety valve and ball type equalizing valve |
| SU939731A1 (en) * | 1980-09-09 | 1982-06-30 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Apparatus for shutting-off a drill string |
| CN2485416Y (en) * | 2001-04-24 | 2002-04-10 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Switch on tubing bottom |
| CN201062508Y (en) * | 2007-07-18 | 2008-05-21 | 胡定清 | Subsurface safety valve having plunger type compensation valve |
| CN202914036U (en) * | 2012-10-31 | 2013-05-01 | 中国石油集团川庆钻探工程有限公司 | Hermetic seal subsurface safety valve of side hole control valve |
| CN202954786U (en) * | 2012-12-11 | 2013-05-29 | 中国石油化工股份有限公司 | Oil pipe isolation valve |
| CN205823234U (en) * | 2016-07-08 | 2016-12-21 | 北京博德世达石油技术股份有限公司 | A kind of relief valve |
| CN107191155A (en) * | 2017-04-14 | 2017-09-22 | 博德世达（天津）能源科技有限公司 | High temperature storm valve |
| CN206860145U (en) * | 2017-06-05 | 2018-01-09 | 新疆罡拓能源科技有限公司 | A kind of underground switching valve |
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| PB01 | Publication | ||
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Application publication date: 20200131 |