CN210033372U - Single-double sealed adjustable check valve for oil-gas well - Google Patents
Single-double sealed adjustable check valve for oil-gas well Download PDFInfo
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- CN210033372U CN210033372U CN201822204784.6U CN201822204784U CN210033372U CN 210033372 U CN210033372 U CN 210033372U CN 201822204784 U CN201822204784 U CN 201822204784U CN 210033372 U CN210033372 U CN 210033372U
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Abstract
The utility model relates to the technical field of check valves, in particular to a single-double sealed adjustable check valve for an oil and gas well; the check valve comprises a single-flow valve shell and an adapter; an upper installation ring groove is formed in the inner side of the upper portion of the adapter, the lower end of the uniflow valve shell is fixedly installed in the upper installation ring groove of the adapter, a first valve core assembly and a second valve core assembly are sequentially installed on the inner sides of the middle portion and the lower portion of the uniflow valve shell in a pressing mode from top to bottom, and the lower end seat of the second valve core assembly is located on the bottom end face of the outer edge of the installation ring groove in the adapter. The utility model has the advantages of reasonable and compact structure, convenient to use uses through the cooperation of single current valve case, crossover sub, first case assembly and second case assembly, realizes the sealed purpose of gas-liquid, has safe and reliable's characteristics, has made things convenient for the operation, has improved work efficiency, has reduced manufacturing cost.
Description
Technical Field
The utility model relates to a single current valve technical field is a single, double containment regulation formula single current valve of oil gas well.
Background
The coiled tubing technology is mature and applied to various oil fields, and is deeply favored by various oil fields by utilizing the advantages of continuous lifting and realization of whole-course operation under pressure. However, after the coiled tubing is put into a well for construction, accidents or losses caused by the fact that the pressure in the well leaks out of the tubing are prevented according to process requirements or after the tube wall is damaged, and products such as a check valve and the like are produced.
The check valves in the market are various in types, the structure of the check valve is different according to different processes, most of the check valves cannot be used universally, and the production cost is high.
Disclosure of Invention
The utility model provides an oil gas well list, double containment regulation formula single current valve has overcome above-mentioned prior art not enough, and it can effectively solve current single current valve can not general and problem that manufacturing cost is high.
The technical scheme of the utility model is realized through following measure: a single-double seal adjustable check valve for oil and gas wells comprises a check valve housing and an adapter; an upper installation ring groove is formed in the inner side of the upper portion of the adapter, the lower end of the uniflow valve shell is fixedly installed in the upper installation ring groove of the adapter, a first valve core assembly and a second valve core assembly are sequentially installed on the inner sides of the middle portion and the lower portion of the uniflow valve shell in a pressing mode from top to bottom, and the lower end seat of the second valve core assembly is located on the bottom end face of the outer edge of the installation ring groove in the adapter.
The following are further optimization or/and improvement of the technical scheme of the utility model:
the inner sides of the middle part and the lower part of the uniflow valve shell are provided with lower mounting ring grooves communicated with each other, the first valve core assembly and the second valve core assembly are sequentially and tightly installed in the lower mounting ring grooves of the uniflow valve shell from top to bottom, and the lower end seat of the second valve core assembly is arranged on the bottom end face of the outer edge of the mounting ring groove on the adapter.
The sealing ring is arranged between the upper end of the first valve core assembly and the uniflow valve shell, at least one sealing ring is arranged between the first valve core assembly and the second valve core assembly, and the sealing ring is arranged between the lower end of the second valve core assembly and the conversion joint.
The sealing ring is a fluorine rubber sealing ring.
The first valve core assembly is a high-pressure spherical valve core assembly or a full-through single-valve core assembly or an airtight wedge-shaped valve core assembly.
The second valve core assembly is a high-pressure spherical valve core assembly or a full-through single-valve core assembly or an airtight wedge valve core assembly or a full-through valve core assembly.
The inner side of the upper end of the check valve shell is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
The utility model has the advantages of reasonable and compact structure, convenient to use uses through the cooperation of single current valve case, crossover sub, first case assembly and second case assembly, realizes the sealed purpose of gas-liquid, has safe and reliable's characteristics, has made things convenient for the operation, has improved work efficiency, has reduced manufacturing cost.
Drawings
Fig. 1 is a schematic sectional view of the preferred embodiment of the present invention.
Fig. 2 is a schematic view of a prior art high-pressure ball valve core assembly in a front view, sectional and enlarged structure.
Fig. 3 is a schematic view of a prior art cross-sectional enlarged structure of a full-through single-valve spool assembly.
FIG. 4 is a schematic sectional view of an enlarged prior art wedge valve core assembly.
Fig. 5 is a schematic view of a prior art full-through valve core assembly in a front view, a cross-sectional view and an enlarged structure.
Fig. 6 is a schematic view of the sectional structure of the assembly drawing of the present invention.
The codes in the figures are respectively: the gas-tight wedge-shaped valve core assembly comprises a check valve shell 1, a crossover sub 2, a first valve core assembly 3, a second valve core assembly 4, an upper installation ring groove 5, a lower installation ring groove 6, a sealing ring 7, a high-pressure spherical valve core assembly 8, a full-through single-disc valve core assembly 9, an airtight wedge-shaped valve core assembly 10, a full-through valve core assembly 11, a force application groove 12, a coiled tubing 13 and a downhole tool 14.
Detailed Description
The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.
In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The invention will be further described with reference to the following examples and drawings:
as shown in attached figures 1 and 3, the single-sealing and double-sealing regulation type check valve of the oil and gas well comprises a single-flow valve housing 1 and an adapter 2; an upper installation ring groove 5 is arranged on the inner side of the upper part of the adapter 2, the lower end of the uniflow valve shell 1 is fixedly installed in the upper installation ring groove 5 of the adapter 2, a first valve core assembly 3 and a second valve core assembly 4 are sequentially installed on the inner sides of the middle part and the lower part of the uniflow valve shell 1 in a pressing mode from top to bottom, and the lower end seat of the second valve core assembly 4 is arranged on the bottom end face of the outer edge of the installation ring groove 5 on the adapter 2. The first valve core assembly 3 and the second valve core assembly 4 can be assembled randomly according to different well types and working conditions, and oil wells, water wells and gas wells can be compatible with each other through valve core conversion, so that different process requirements can be met; therefore, the purpose of gas-liquid sealing is achieved by matching the single-flow valve shell 1, the adapter 2, the first valve core assembly 3 and the second valve core assembly 4, the gas-liquid sealing valve has the advantages of being safe and reliable, operation is facilitated, working efficiency is improved, and production cost is reduced.
The single-sealing adjustable check valve and the double-sealing adjustable check valve of the oil and gas well can be further optimized or/and improved according to actual requirements:
as shown in fig. 1 and 3, the inner sides of the middle part and the lower part of the uniflow valve housing 1 are provided with lower installation ring grooves 6 communicated with each other, the first valve core assembly 3 and the second valve core assembly 4 are sequentially installed in the lower installation ring grooves 6 of the uniflow valve housing 1 in a pressing manner from top to bottom, and the lower end seat of the second valve core assembly 4 is arranged on the bottom end face of the outer edge of the installation ring groove 5 on the adapter 2. In this way, the lower mounting ring groove 6 on the single flow valve housing 1 facilitates a better press fit into the lower mounting ring groove 6 of the single flow valve housing 1.
As shown in fig. 1 and 3, a sealing ring 7 is installed between the upper end of the first valve core assembly 3 and the check valve housing 1, at least one sealing ring 7 is installed between the first valve core assembly 3 and the second valve core assembly 4, and a sealing ring 7 is installed between the lower end of the second valve core assembly 4 and the adapter 2. In this way, the sealing ring 7 facilitates sealing.
The seal ring 7 is a fluorine rubber seal ring as required. Thus, the fluorine rubber sealing ring facilitates better sealing.
As shown in fig. 1, 2, 3, and 4, the first valve core assembly 3 is a high-pressure spherical valve core assembly 8, a full-through single-valve core assembly 9, or an airtight wedge valve core assembly 10. The high-pressure spherical valve core assembly 8, the full-through single-valve core assembly 9 and the air-tight wedge-shaped valve core assembly 10 are publicly known and used.
As shown in fig. 1, 2, 3, 4 and 5, the second valve core assembly 4 is a high-pressure ball valve core assembly 8, or a full-through single-flap valve core assembly 9, or a gas-tight wedge valve core assembly 10, or a full-through valve core assembly 11. The high-pressure spherical valve core assembly 8, the all-through single-valve core assembly 9, the airtight wedge-shaped valve core assembly 10 and the all-through valve core assembly 11 are publicly known and commonly used; therefore, the first valve core assembly 3 and the second valve core assembly 4 can be assembled randomly according to different well types and working conditions, oil wells, water wells and gas wells can be compatible with each other through valve core conversion, and different process requirements can be met.
As shown in fig. 1 and 6, an internal thread is arranged on the inner side of the upper end of the check valve shell 1; or/and the outer side of the lower part of the adapter 2 is provided with an external thread; or/and the check valve shell 1 and the adapter 2 are fixedly installed together through threads; or/and the outer diameter of the check valve shell 1 is equal to that of the adapter 2; or/and force application grooves 12 are respectively arranged on the outer side of the middle part of the check valve shell 1 and the outer side of the middle part of the adapter 2. Thus, the internal threads on the single flow valve housing 1 facilitate the installation and removal of the single flow valve housing 1; the external thread on the adapter 2 is convenient for the installation and the disassembly of the adapter 2; the uniflow valve shell 1 and the adapter 2 are fixedly installed together through threads, so that the uniflow valve shell 1 and the adapter 2 can be conveniently installed and detached; the force applying grooves 12 on the single flow valve shell 1 and the adapter 2 facilitate the force application when the force applying tool is assembled and disassembled.
Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.
The utility model discloses best embodiment's use: when the device is used, the upper end of the single-flow valve shell 1 is connected with the coiled tubing 13, the lower end of the adapter 2 is connected with the downhole tool 14, then the utility model, the coiled tubing 13 and the downhole tool 14 are put into a well together, the pump truck on the ground is started, the liquid in the pump truck passes through the inner cavity of the single-flow valve shell 1, and then the first valve core assembly 3 and the second valve core assembly 4 are jacked open and normally pass through; after the pump is stopped, the valve plates on the first valve core assembly 3 and the second valve core assembly 4 are automatically closed, liquid in the well cannot enter the pipe, a one-way channel is realized, and the first valve core assembly 3 and the second valve core assembly 4 which are matched can be selected according to the characteristics of an oil-gas well so as to ensure that the sealing function is good.
Claims (15)
1. A single-double seal adjustable check valve for oil and gas wells is characterized by comprising a check valve housing and an adapter; an upper installation ring groove is formed in the inner side of the upper portion of the adapter, the lower end of the uniflow valve shell is fixedly installed in the upper installation ring groove of the adapter, a first valve core assembly and a second valve core assembly are sequentially installed on the inner sides of the middle portion and the lower portion of the uniflow valve shell in a pressing mode from top to bottom, and the lower end seat of the second valve core assembly is located on the bottom end face of the outer edge of the installation ring groove in the adapter.
2. An oil and gas well single and double seal regulation type check valve as claimed in claim 1, wherein the inner sides of the middle and lower parts of the check valve housing are provided with lower mounting ring grooves communicated with each other, and the first valve core assembly and the second valve core assembly are sequentially mounted in the lower mounting ring grooves of the check valve housing in a pressing manner from top to bottom.
3. The single and double seal adjustable check valve for oil and gas wells as claimed in claim 1 or 2, wherein a sealing ring is installed between the upper end of the first spool assembly and the check valve housing, at least one sealing ring is installed between the first spool assembly and the second spool assembly, and a sealing ring is installed between the lower end of the second spool assembly and the crossover sub.
4. An oil and gas well single and double seal adjustable check valve as claimed in claim 3, wherein the sealing ring is a fluoro-rubber sealing ring.
5. The single and double seal adjustable check valve for oil and gas wells according to claims 1, 2 or 4, wherein the first valve core assembly is a high pressure spherical valve core assembly or a full through single valve core assembly or a gas tight wedge valve core assembly.
6. An oil and gas well single and double seal adjustable check valve as claimed in claim 3, wherein the first valve core assembly is a high pressure ball valve core assembly or a full through single valve core assembly or a gas tight wedge valve core assembly.
7. Oil and gas well single, double seal regulation formula single current valve of claim 1 or 2 or 4 or 6, characterized in that second valve core assembly is high pressure ball valve core assembly or full-through single lamella valve core assembly or airtight wedge valve core assembly or full-through valve core assembly.
8. An oil and gas well single and double seal adjustable check valve as claimed in claim 3, wherein the second valve core assembly is a high pressure ball valve core assembly or a full through single valve core assembly or a gas tight wedge valve core assembly or a full through valve core assembly.
9. An oil and gas well single and double seal adjustable check valve as claimed in claim 5, wherein the second valve core assembly is a high pressure ball valve core assembly or a full through single valve core assembly or a gas tight wedge valve core assembly or a full through valve core assembly.
10. The oil and gas well single and double seal regulation type check valve as claimed in claim 1, 2, 4 or 6, wherein the inner side of the upper end of the check valve housing is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
11. An oil and gas well single and double seal adjustable check valve as claimed in claim 3, wherein the inner side of the upper end of the check valve housing is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
12. An oil and gas well single and double seal regulation type check valve as claimed in claim 5, wherein the inner side of the upper end of the check valve housing is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
13. An oil and gas well single and double seal adjustable check valve as claimed in claim 7, wherein the inner side of the upper end of the check valve housing is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
14. An oil and gas well single and double seal adjustable check valve as claimed in claim 8, wherein the inner side of the upper end of the check valve housing is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
15. An oil and gas well single and double seal adjustable check valve as claimed in claim 9, wherein the inner side of the upper end of the check valve housing is provided with an internal thread; or/and the outer side of the lower part of the adapter is provided with an external thread; or/and the single-flow valve shell and the adapter are fixedly installed together through threads; or/and the outer diameter of the single-flow valve shell is equal to that of the adapter; or/and force applying grooves are respectively arranged on the outer side of the middle part of the check valve shell and the outer side of the middle part of the adapter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204784.6U CN210033372U (en) | 2018-12-26 | 2018-12-26 | Single-double sealed adjustable check valve for oil-gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822204784.6U CN210033372U (en) | 2018-12-26 | 2018-12-26 | Single-double sealed adjustable check valve for oil-gas well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210033372U true CN210033372U (en) | 2020-02-07 |
Family
ID=69343266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822204784.6U Active CN210033372U (en) | 2018-12-26 | 2018-12-26 | Single-double sealed adjustable check valve for oil-gas well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210033372U (en) |
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2018
- 2018-12-26 CN CN201822204784.6U patent/CN210033372U/en active Active
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