CN110847865A - Drainage gas production passageway intercommunication device - Google Patents
Drainage gas production passageway intercommunication device Download PDFInfo
- Publication number
- CN110847865A CN110847865A CN201810952876.4A CN201810952876A CN110847865A CN 110847865 A CN110847865 A CN 110847865A CN 201810952876 A CN201810952876 A CN 201810952876A CN 110847865 A CN110847865 A CN 110847865A
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- China
- Prior art keywords
- valve
- communication device
- gas production
- shell
- gas
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- 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.)
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 7
- 239000006260 foam Substances 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 48
- 238000013461 design Methods 0.000 description 5
- 238000000638 solvent extraction Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
-
- 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
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
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)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
Abstract
The invention discloses a drainage gas production channel communication device, and belongs to the field of oil and gas development. This drainage gas production passageway intercommunication device includes: a separator, a shell, a one-way flow valve and an air inlet valve cap. The separator is arranged in the shell and used for separating the oil pipe of the gas well from the casing and is broken down under the action of pressure difference. The housing is adapted to be connected to a production string above the permanent packer. One-way flow valves are used to allow one-way flow of fluid within the housing. The intake valve cap is used to let fluid into the housing. The air inlet valve cap, the one-way circulation valve and the shell are sequentially connected from top to bottom. The drainage gas production channel communication device provided by the invention can realize communication between the gas well oil pipe and the sleeve, and can complete drainage gas production processes such as gas lift drainage or foam drainage.
Description
Technical Field
The invention relates to the field of oil and gas development, in particular to a water and gas drainage channel communication device.
Background
In the process of oil and gas development, oil and gas in an underground production layer are usually exploited by using a gas well, however, when the gas well is developed to the middle and later stages, the gas well needs to be drained and subjected to gas production at the moment when excessive liquid accumulation or serious water production occurs in a well bore of the gas well and near the bottom of the well, so that the gas well can be recovered to be normally produced. For high temperature, high pressure, high sulfur "three high" gas wells, due to the above-mentioned particularities of their subterranean reservoirs and for the purpose of casing protection, permanent packers are typically employed for completion operations and production strings (also known as permanent completion strings) with such permanent packers are used for natural gas production. At this time, the oil pipe of the gas well is isolated from the casing, and if a drainage gas recovery process such as gas lift drainage or foam drainage is to be performed on the gas well, the oil pipe in the gas well needs to be communicated with the casing.
Disclosure of Invention
The embodiment of the invention provides a drainage gas production channel communication device, which can solve the technical problem. The specific technical scheme is as follows:
the embodiment of the invention provides a drainage gas production channel communication device, which comprises: a separator, a housing, a one-way flow valve, an intake valve cap;
the separator is arranged in the shell and used for separating an oil pipe and a casing of the gas well and is broken down under the action of pressure difference;
the casing is used for being connected to a production string above the permanent packer;
the one-way flow valve is used for enabling the fluid to flow in one direction in the shell;
the intake valve cap is used for enabling fluid to enter the shell;
the air inlet valve cap, the one-way circulation valve and the shell are sequentially connected from top to bottom.
In one possible design, a limit step is arranged in the shell, and the partition is arranged on the limit step;
the device further comprises: and the limiting ring is sleeved in the shell and used for abutting against the upper end of the separating piece.
In one possible embodiment, the stop ring is screwed to the housing.
In one possible design, the one-way flow valve includes: the valve comprises a valve body, a sealing seat, a valve head, an elastic piece and a supporting piece;
the sealing seat is sleeved in the valve body, and a sealing hole is formed in the sealing seat;
the bottom end of the valve body is provided with a supporting step, and the supporting piece is fixed on the supporting step;
the elastic piece is arranged between the valve head and the support piece, and the valve head is used for sealing the sealing hole under the elastic action of the elastic piece.
In one possible embodiment, the valve body is screwed to the housing.
In one possible embodiment, a sealing ring is arranged between the valve body and the housing.
In one possible design, a sealing ring is arranged between the partition and the housing.
In a possible design, a plurality of air inlet holes are uniformly arranged on the side wall of the air inlet valve cap along the circumferential direction.
In one possible design, the intake valve cap is threadably connected to the one-way flow-through valve.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the drainage gas production channel communication device provided by the embodiment of the invention, the separator is arranged, so that the connection and disconnection of the oil pipe and the casing of the gas well can be realized, and the smooth operation of subsequent drainage gas production is ensured. By arranging the one-way flow valve, the fluid can only flow in one way underground, corrosive media in the oil pipe are prevented from entering the casing through the one-way flow valve, and the integrity of a gas well shaft is ensured. Through setting up the valve cap that admits air, guaranteed that the fluid between oil pipe and the sleeve pipe can flow to in the casing smoothly. Therefore, the drainage gas production channel communication device provided by the embodiment of the invention can realize the communication between the gas well oil pipe and the casing pipe, and can finish drainage gas production processes such as gas lift drainage or foam drainage.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a water drainage and gas production channel communication device provided in an embodiment of the present invention.
The reference numerals denote:
1 a separating member, which is provided with a plurality of partition members,
2, a shell body is arranged in the shell body,
3 a one-way flow valve is arranged on the valve body,
301 of the valve body,
302 a seal seat for a seal to be provided,
303 the valve head is arranged to be in fluid communication with,
304 of the elastic element,
305 the support member or members of the support member,
4 an air inlet valve cap is arranged on the air inlet valve,
5 a limit ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a drainage gas production channel communication device, which comprises the following components in part by weight as shown in the attached figure 1: a partition 1, a housing 2, a one-way flow valve 3, and an intake valve cap 4. The separator 1 is arranged in the shell 2 and used for separating a gas well oil pipe from a casing and is broken down under the action of pressure difference. The housing 2 is intended to be connected to a production string above a permanent packer. The one-way flow valve 3 is used to make the fluid flow in one direction in the housing 2. The intake valve cap 4 is used to let fluid into the housing 2. The air inlet valve cap 4, the one-way circulation valve 3 and the shell 2 are sequentially connected from top to bottom. Wherein "fluid" means: gas, water, etc.
When water drainage and gas production are needed, the pressure is applied between an oil pipe and a sleeve of the gas well, so that fluid flows to the upper end of the partition 1 after passing through the air inlet valve cap 4 and the one-way flow valve 3. And when the pressure difference of the two sides of the separator 1 is greater than the rated working pressure difference of the separator 1, the separator 1 is broken down, the oil pipe is communicated with the sleeve, and the subsequent drainage and gas production work is completed.
According to the drainage gas production channel communication device provided by the embodiment of the invention, the separator 1 is arranged, so that the connection and disconnection of the oil pipe and the casing of the gas well can be realized, and the subsequent drainage gas production work can be smoothly carried out. By arranging the one-way flow valve 3, the fluid can only flow in one way underground, corrosive media in an oil pipe are prevented from entering a casing through the one-way flow valve 3, and the integrity of a gas well shaft is ensured. Through setting up air inlet valve cap 4, guaranteed that the fluid between oil pipe and the sleeve pipe can flow to in the casing 2 smoothly. Therefore, the drainage gas production channel communication device provided by the embodiment of the invention can realize the communication between the gas well oil pipe and the casing pipe, and can finish drainage gas production processes such as gas lift drainage or foam drainage.
Wherein the separator 1 may have a sheet structure, and the separator 1 is broken down when a pressure difference across the sheet structure exceeds a preset pressure value.
In order to ensure that the separating element 1 can be clamped in the housing 2, a limiting step can be provided in the housing 2, on which the separating element 1 is arranged. Further, as shown in fig. 1, the apparatus further includes: and the limiting ring 5 is sleeved in the shell 2 and is used for abutting against the upper end of the separator 1.
In order to ensure that the limiting ring 5 is tightly connected with the shell 2 and is convenient to detach, the limiting ring 5 and the shell 2 can be in threaded connection. Wherein, be provided with the external screw thread on the outer wall of spacing ring 5, be provided with the internal thread with this external screw thread looks adaptation on the inner wall of casing 2.
When the spacing block is applied, the spacing block 1 can be pressed on the spacing step in the shell 2 only by rotating the spacing ring 5 in the shell 2; the spacing member 1 can be taken out from the housing 2 by rotating the spacing ring 5 in the reverse direction.
In order to ensure that the fluid can only flow in one direction from top to bottom in the housing 2, as shown in fig. 1, the one-way flow valve 3 comprises: valve body 301, seal seat 302, valve head 303, elastic member 304, support 305. Wherein, the sealing seat 302 is sleeved in the valve body 301, and the sealing seat 302 is provided with a sealing hole. A support step is arranged at the bottom end of the valve body 301, and the support piece 305 is fixed on the support step; the elastic member 304 is provided between the valve head 303 and the support member 305, and the valve head 303 is used to seal the seal hole by the elastic force of the elastic member 304.
When water drainage and gas production operation are required, the annular space formed by the oil pipe and the sleeve is pressurized, so that fluid enters the shell 2 from the air inlet valve cap 4 and pushes the valve head 302 open. At this time, the valve head 302 compresses the elastic member 304 downward and is separated from the seal holder 302, and the fluid flows to above the partitioning member 1 through a gap formed between the valve head 302 and the seal holder 302. When the pressure difference of two sides of the separator 1 is larger than the rated pressure value of the separator 1, the separator 1 is broken down, and fluid flows to the bottom of the well through the separator 1 so as to perform subsequent drainage and gas production.
When the injection of fluid into the annular space formed by the oil pipe and the casing is stopped, the oil pipe pressure is greater than the casing pressure, and the valve head 302 moves upwards under the elastic action of the elastic element 304 until abutting against the sealing seat 302, so that the sealing of the sealing hole (i.e. the sealing between the oil pipe and the casing) is realized.
The elastic member 304 may be a spring, which can save cost while ensuring its elasticity. The end of the valve head 302 may be provided with a conical structure, and the limiting step in the valve body 301 is a conical structure matched with the valve head 302.
The structure of the support 305 may be various, for example, it may be a square structure, a cylindrical structure, or the like. In addition, in order to ensure that the support member 305 can be securely fixed to the support step, the support member 305 may be welded to the support step.
In order to ensure that the valve body 301 is tightly connected with the housing 2 and is easy to detach, the valve body 301 is screwed with the housing 2. Wherein, the inner wall of the shell 2 is provided with an internal thread, and the outer wall of the valve body 301 is provided with an external thread matched with the internal thread.
In order to improve the sealing property between the valve body 301 and the housing 2, a seal ring may be provided between the valve body 301 and the housing 2. Wherein, be provided with the seal groove on the inner wall of casing 2, the sealing washer is installed in this seal groove.
In order to improve the sealing property between the partitioning member 1 and the housing 2, a seal ring is provided between the partitioning member 1 and the housing 2. Wherein, be provided with the seal groove on the inner wall of casing 2, the sealing washer is installed in this seal groove.
In order to prevent impurities in the gas well from directly falling into the housing 2, a plurality of gas inlet holes may be uniformly formed in the sidewall of the gas inlet bonnet 4 along the circumferential direction.
The shape of the air inlet hole can be various, for example, it can be round, square, etc.
In order to secure the intake air amount of the intake valve cap 4, the number of intake holes may be set to 4. It can be understood that, at this time, the included angle between every two air inlet holes is 90 °.
In order to ensure that the air inlet valve cap 4 is tightly connected with the one-way flow valve 3 and is convenient to detach, the air inlet valve cap 4 can be in threaded connection with the one-way flow valve 3. Wherein, be provided with the external screw thread on the outer wall of air inlet valve cap 4, be provided with the internal thread with this external screw thread looks adaptation on the inner wall of one-way circulation valve 3.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A water and gas production channel communication device, characterized in that the device comprises: a separator (1), a shell (2), a one-way flow valve (3) and an air inlet valve cap (4);
the separator (1) is arranged in the shell (2) and used for separating an oil pipe and a casing of a gas well and is broken down under the action of pressure difference;
the casing (2) is used for connecting to a production string above the permanent packer;
the one-way flow valve (3) is used for enabling the fluid to flow in one direction in the shell (2);
the intake valve cap (4) is used for enabling fluid to enter the shell (2);
the air inlet valve cap (4), the one-way circulation valve (3) and the shell (2) are sequentially connected from top to bottom.
2. A water and gas drainage communication device according to claim 1, wherein a limit step is provided in the housing (2), and the partition (1) is provided on the limit step;
the device further comprises: and the limiting ring (5) is sleeved in the shell (2) and used for abutting against the upper end of the separating piece (1).
3. A water and gas production channel communication device according to claim 2, wherein the retainer ring (5) is screwed with the housing (2).
4. A water and gas production channel communication device according to claim 1, wherein the one-way flow valve (3) comprises: the valve comprises a valve body (301), a sealing seat (302), a valve head (303), an elastic piece (304) and a supporting piece (305);
the sealing seat (302) is sleeved in the valve body (301), and a sealing hole is formed in the sealing seat (302);
a supporting step is arranged at the bottom end of the valve body (301), and the supporting piece (305) is fixed on the supporting step;
the elastic member (304) is disposed between the valve head (303) and the support member (305), and the valve head (303) is used for sealing the sealing hole under the elastic action of the elastic member (304).
5. A water and gas production channel communication device according to claim 4, wherein the valve body (301) is screwed with the housing (2).
6. A water and gas drainage channel communication device according to claim 4, wherein a sealing ring is provided between the valve body (301) and the housing (2).
7. A water and gas production channel communication device according to claim 1, wherein a seal ring is provided between the partition (1) and the housing (2).
8. A water and gas production channel communication device according to claim 1, wherein a plurality of air inlet holes are uniformly arranged on the side wall of the air inlet valve cap (4) along the circumferential direction.
9. A water and gas production passage communication device according to claim 1, wherein the intake valve cap (4) is screwed with the one-way flow valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952876.4A CN110847865A (en) | 2018-08-20 | 2018-08-20 | Drainage gas production passageway intercommunication device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810952876.4A CN110847865A (en) | 2018-08-20 | 2018-08-20 | Drainage gas production passageway intercommunication device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110847865A true CN110847865A (en) | 2020-02-28 |
Family
ID=69595212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810952876.4A Pending CN110847865A (en) | 2018-08-20 | 2018-08-20 | Drainage gas production passageway intercommunication device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110847865A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070215358A1 (en) * | 2006-03-17 | 2007-09-20 | Schlumberger Technology Corporation | Gas Lift Valve Assembly |
| US20100319924A1 (en) * | 2009-06-17 | 2010-12-23 | Schlumberger Technology Corporation | Compliant dart-style reverse-flow check valve |
| CN106471208A (en) * | 2014-07-01 | 2017-03-01 | 国际壳牌研究有限公司 | Hydraulic locking compensation balance valve |
| CN107304666A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of oil recovery gas method |
| CN108316887A (en) * | 2018-03-30 | 2018-07-24 | 中国石油化工股份有限公司 | Gas lift valve and oil pipe |
-
2018
- 2018-08-20 CN CN201810952876.4A patent/CN110847865A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070215358A1 (en) * | 2006-03-17 | 2007-09-20 | Schlumberger Technology Corporation | Gas Lift Valve Assembly |
| US20100319924A1 (en) * | 2009-06-17 | 2010-12-23 | Schlumberger Technology Corporation | Compliant dart-style reverse-flow check valve |
| CN106471208A (en) * | 2014-07-01 | 2017-03-01 | 国际壳牌研究有限公司 | Hydraulic locking compensation balance valve |
| CN107304666A (en) * | 2016-04-22 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of oil recovery gas method |
| CN108316887A (en) * | 2018-03-30 | 2018-07-24 | 中国石油化工股份有限公司 | Gas lift valve and oil pipe |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200228 |
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| RJ01 | Rejection of invention patent application after publication |