CN112031718A - Well-flushing oil and gas drainage and injection device capable of being sealed repeatedly - Google Patents
Well-flushing oil and gas drainage and injection device capable of being sealed repeatedly Download PDFInfo
- Publication number
- CN112031718A CN112031718A CN202010908425.8A CN202010908425A CN112031718A CN 112031718 A CN112031718 A CN 112031718A CN 202010908425 A CN202010908425 A CN 202010908425A CN 112031718 A CN112031718 A CN 112031718A
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- CN
- China
- Prior art keywords
- oil
- outlet cover
- oil outlet
- opening disc
- punching
- 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
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 16
- 238000002347 injection Methods 0.000 title claims description 14
- 239000007924 injection Substances 0.000 title claims description 14
- 238000004080 punching Methods 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 239000003129 oil well Substances 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008092 positive effect Effects 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a repeatedly-sealable oil and gas discharging and injecting device for a normal flushing well, wherein a lengthened short joint, a reducing coupling, an oil outlet cover and a compression joint are sequentially connected from top to bottom, a liftable opening disc is arranged between the upper end of the oil outlet cover and the inside of the reducing coupling, a valve seat is arranged between the lower end of the oil outlet cover and the upper end of the compression joint, and a valve ball is accommodated between the valve seat and the lower end of the oil outlet cover; a plurality of punching shafts are arranged between the opening disc and the upper end of the oil outlet cover, the upper end of each punching shaft is connected with the opening disc, and the lower end of each punching shaft can be inserted into the oil outlet cover in a relatively movable manner; the oil outlet cover is provided with bent slideways with the same number as the punching shafts, a push-pull flexible shaft is arranged in each bent slideway, and each push-pull flexible shaft is connected with the punching shafts in the same bent slideway; a spring is arranged between the opening disc and the oil outlet cover, and two ends of the spring are respectively abutted against the opening disc and the oil outlet cover. The invention can be repeatedly used, can realize positive well washing, can play a role of repeatedly sealing and using the oil drain device, can directly inject oil increasing gas liquid, and can improve the oil yield of an oil well.
Description
Technical Field
The invention belongs to the field of oil extraction, and particularly relates to a repeatedly-sealable forward well-flushing oil drainage and gas injection device.
Background
At present, most of oil extraction adopts a single bottom valve formed by a valve ball valve seat, liquid or gas can only flow from bottom to top in a lengthened short circuit and cannot flow from top to bottom, so that the measures of well washing, oil drainage, sand washing, gas injection and the like cannot be directly realized, and a large amount of manpower and material resources are consumed during well washing or well repairing. The existing controllable bottom valve positive well-flushing oil drainage device cannot have stable positive well-flushing, oil drainage, sand washing and gas injection effects.
Disclosure of Invention
In order to solve the problems of the conventional forward well-flushing oil drainage device, the invention aims to provide a forward well-flushing oil drainage and gas injection device capable of being sealed repeatedly.
The purpose of the invention is realized by the following technical scheme:
the oil outlet device comprises a reducing coupling, a compression joint, an oil outlet cover, an opening disc, a punching shaft, a push-pull flexible shaft, a valve ball, a valve seat, a spring, a plunger and a lengthened short circuit which are respectively arranged below an oil well, wherein the lengthened short circuit, the reducing coupling, the oil outlet cover and the compression joint are sequentially connected from top to bottom; a plurality of punching shafts are arranged between the opening disc and the upper end of the oil outlet cover, the upper end of each punching shaft is connected with the opening disc, and the lower end of each punching shaft can be inserted into the oil outlet cover in a relatively movable manner; the oil outlet cover is provided with bent slideways with the same number as the punching shafts, a push-pull flexible shaft is arranged in each bent slideway, and each push-pull flexible shaft is connected with the punching shaft in the same bent slideway; a spring is arranged between the opening disc and the oil outlet cover, and two ends of the spring are respectively abutted against the opening disc and the oil outlet cover; the plunger in the lengthened short circuit presses the opening disc downwards, the push-pull flexible shaft is driven by the punching shaft to extend along the bent slideway, the valve ball is further supported and separated from the valve seat, a flow passage of liquid or gas is opened, after the plunger is lifted, the opening disc is reset by the spring, the opening disc drives the push-pull flexible shaft to retract by the punching shaft, the valve ball falls on the valve seat, and the flow passage of the liquid or gas is closed.
Wherein: the lower end of the oil outlet cover is provided with a moving space, and the outlet of each bent slide way is positioned at the bottom edge of the moving space; when the flow channel of liquid or gas is opened, the ball valve is upwards supported by the push-pull flexible shafts to enter the moving space.
And a plurality of shunting oil ducts are uniformly formed in the edge of the upper surface and the edge of the lower surface of the opening disc respectively along the circumferential direction. The shunting oil passage inclines downwards from inside to outside.
The opening disc is provided with a through hole A for liquid or gas to flow through, and the oil outlet cover is provided with a through hole B for liquid or gas to flow through.
The bottom surface of the opening plate is provided with a punching shaft mounting hole A at the periphery of the through hole A, the outer edge of the punching shaft mounting hole A extends downwards along the axial direction, a groove is further formed in the middle of the bottom surface of the opening plate, and the upper end of the spring is abutted against the groove.
The oil outlet cover is provided with a punching shaft mounting hole B at the periphery of the through hole B, the outer edge of the punching shaft mounting hole B extends upwards along the axial direction to form an accommodating space, and the lower end of the spring is abutted to the accommodating space.
The lower end of the bent slideway is a bent part which is bent from outside to inside.
The invention has the advantages and positive effects that:
1. realizing positive well flushing: according to the invention, the plunger of the oil well pump is lowered to the bottom, the opening disc of the one-way valve is compressed, the one-way valve is opened, and wax, dirt and impurities in the oil pipe, the oil well pump and the bottom one-way valve are most directly cleaned, so that the well washing efficiency is greatly improved, and the well washing cost is saved.
2. The invention can be repeatedly used, when the plunger of the oil pump is lifted, the one-way valve is closed, and the oil well can recover normal production.
3. When the pipe string is lifted, the check valve can be opened by throwing the weighting rod, so that the oil drain device plays a role, and environment-friendly operation can be realized.
4. The plunger of the invention is put to the bottom and opens the one-way valve, and can be directly filled with oil-increasing gas or liquid, so that the oil yield of the oil well is increased.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a structural cross-sectional view of the reducer collar of FIG. 1;
FIG. 3 is a cross-sectional view of the compression fitting of FIG. 1;
FIG. 4 is a top view of the structure of the opening tray of FIG. 1;
FIG. 5 is a bottom view of the structure of the opening tray of FIG. 1;
FIG. 6 is a top view of the structure of the oil outlet cover of FIG. 1;
wherein: the variable diameter coupling comprises a variable diameter coupling 1, a compression joint 2, an oil outlet cover 3, an opening disc 4, a punching shaft 5, a push-pull flexible shaft 6, a valve ball 7, a valve seat 8, a spring 9, a plunger 10, a bent slideway 11, an lengthened short joint 12, a quicksand groove 13, a flow dividing oil passage 14, a moving space 15, a groove 16, an accommodating space 17, a through hole A18, a punching shaft mounting hole A19, a punching shaft mounting hole B20 and a through hole B21.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, the invention comprises a reducing coupling 1, a compression joint 2, an oil outlet cover 3, an opening disc 4, a punching shaft 5, a push-pull flexible shaft 6, a valve ball 7, a valve seat 8, a spring 9, a plunger 10 and a lengthened short circuit 12 which are respectively arranged below an oil well, wherein the lengthened short circuit 12, the reducing coupling 1, the oil outlet cover 3 and the compression joint 2 are sequentially in threaded sealing connection from top to bottom, the liftable opening disc 4 is arranged between the upper end of the oil outlet cover 3 and the inside of the reducing coupling 1, the valve seat 8 is arranged between the lower end of the oil outlet cover 3 and the upper end of the compression joint 2, and the valve ball 7 is accommodated between the valve seat 8 and the lower end of the oil outlet. A plurality of (two in this embodiment) punching shafts 5 are arranged between the opening disc 4 and the upper end of the oil outlet cover 3, the upper end of each punching shaft 5 is in threaded connection with the opening disc 4, and the lower end of each punching shaft 5 can be inserted into the oil outlet cover 3 in a relatively movable manner. The oil outlet cover 3 is provided with bent slideways 11 with the same number as the punching shafts 5, a push-pull flexible shaft 6 is arranged in each bent slideway 11, and the upper end of each push-pull flexible shaft 6 is connected with the lower end of the punching shaft 5 in the same bent slideway 11; a spring 9 is arranged between the opening plate 4 and the oil outlet cover 3, and two ends of the spring 9 are respectively abutted against the opening plate 4 and the oil outlet cover 3.
The reducing coupling 1 of this embodiment is hollow structure, and the inner wall at both ends all makes the internal thread about, is used for respectively with extension short circuit 12 and 3 threaded connection of check valve cover.
The compression joint 2 of this embodiment is a hollow structure, and the outer surface of the upper end is provided with an external thread for being in threaded connection with the one-way valve cover 3.
The lower end of the oil outlet cover 3 of the present embodiment is provided with a moving space 15 along the axial direction, and the outlet of each curved slideway 11 is located at the bottom edge of the moving space 15. The valve ball 7 is upwards supported by each push-pull flexible shaft 6 to enter the moving space 15, and the flow passage of liquid or gas is opened. The lower end of the curved chute 11 of this embodiment is a curved portion that curves from the outside to the inside. The lower end of the push-pull flexible shaft 6 corresponds to the lower end of the curved slideway 11.
The opening plate 4 of this embodiment is discoid, and a plurality of reposition of redundant personnel oil ducts 14 have evenly been seted up along the circumferencial direction respectively at the edge of upper surface and the edge of lower surface, and this reposition of redundant personnel oil duct 14 is from inside to outside downward sloping. In this embodiment, four branch oil passages 14 are uniformly formed in the edge of the opening plate 4 along the circumferential direction, and each branch oil passage 14 is in a V shape. Each branch oil passage 14 can prevent the upper plane of the oil outlet cover 3 with the quicksand groove 13 from being encrusted by sand; also, gas or liquid can pass through the branch oil passage 14 regardless of whether the opening plate 4 is in the open or closed state.
In the present embodiment, the opening plate 4 is provided with a through hole a18 for the liquid or gas to flow through, and the oil outlet cover 3 is provided with a through hole B21 for the liquid or gas to flow through. In the present embodiment, four through holes a18 and four through holes B21 are provided, respectively, and correspond to one another. The periphery of the through hole A18 is provided with a punching shaft mounting hole A19 on the bottom surface of the opening disc 4, the outer edge of the punching shaft mounting hole A19 extends downwards along the axial direction, a groove 16 is further formed in the middle of the bottom surface of the opening disc 4, the upper end of the spring 9 abuts against the groove 16, and the groove 16 also has a positioning effect on the spring 9. The periphery of the through hole B20 formed in the oil outlet cover 3 is provided with a punching shaft mounting hole B20, the outer edge of the punching shaft mounting hole B20 extends upward along the axial direction, so as to form an accommodating space 17, the lower end of the spring 9 abuts against the accommodating space 17, and the accommodating space 17 also has a positioning effect on the spring 9. The number of the punch shaft mounting holes a19 and the punch shaft mounting holes B20 in this embodiment is two.
The push-pull flexible shaft 6 is a commercially available product, is purchased from Hengya flexible shaft Limited of Qinghe county, has the model number of 41411-VH8-6400, and is made of 304 stainless steel.
The working principle of the invention is as follows:
the plunger 10 of the oil pump in the extension sub 12 is lowered onto the opening plate 4, and liquid or gas flows between the plunger 10 and the extension sub. When a plunger 10 connected with the sucker rod presses the opening disc 4 downwards, the push-pull flexible shaft 6 is driven by the punch shaft 5 to move downwards along the bent slideway 11, the push-pull flexible shaft 6 extends out of the bent slideway 11, the valve ball 7 is further lifted upwards and separated from the valve seat 8, the one-way valve is opened, and the flow passage of liquid or gas is opened. After passing through the through hole A on the opening plate 4 and the through hole B21 on the oil outlet cover 3, the liquid or gas flows through the valve seat 8 and the middle hole of the pressing joint 2.
When the plunger 10 is lifted, the opening disc 4 is reset through the spring 9, the opening disc 4 drives the push-pull flexible shaft 6 to retract through the punch shaft 5, the valve ball 7 falls on the valve seat 8, the one-way valve is closed to restore normal operation, and the flow passage of liquid or gas is closed.
Claims (8)
1. The utility model provides a repeatedly sealable well washing draining gas injection device which characterized in that: the oil well anti-leakage device comprises a reducing coupling (1), a compression joint (2), an oil outlet cover (3), an opening disc (4), a punching shaft (5), a push-pull flexible shaft (6), a valve ball (7), a valve seat (8), a spring (9), a plunger (10) and a lengthened short circuit (12) which are respectively arranged below an oil well, wherein the lengthened short circuit (12), the reducing coupling (1), the oil outlet cover (3) and the compression joint (2) are sequentially connected from top to bottom, the liftable opening disc (4) is arranged between the upper end of the oil outlet cover (3) and the inside of the reducing coupling (1), the valve seat (8) is arranged between the lower end of the oil outlet cover (3) and the upper end of the compression joint (2), and the valve ball (7) is accommodated between the valve seat (8) and the lower end; a plurality of punching shafts (5) are arranged between the opening disc (4) and the upper end of the oil outlet cover (3), the upper end of each punching shaft (5) is connected with the opening disc (4), and the lower end of each punching shaft (5) can be inserted into the oil outlet cover (3) in a relatively movable manner; the oil outlet cover (3) is provided with bent slideways (11) with the same number as the punching shafts (5), each bent slideway (11) is internally provided with a push-pull flexible shaft (6), and each push-pull flexible shaft (6) is connected with the punching shafts (5) in the same bent slideway (11); a spring (9) is arranged between the opening disc (4) and the oil outlet cover (3), and two ends of the spring (9) are respectively abutted against the opening disc (4) and the oil outlet cover (3); the plunger (10) in the lengthened short circuit (12) presses the opening disc (4) downwards, the push-pull flexible shaft (6) is driven by the punching shaft (5) to extend out along the bent slide way (11), the valve ball (7) is further supported and separated from the valve seat (8), a flow passage of liquid or gas is opened, after the plunger (10) is lifted, the opening disc (4) resets through the spring (9), the opening disc (4) drives the push-pull flexible shaft (6) to retract through the punching shaft (5), the valve ball (7) falls on the valve seat (8), and the flow passage of the liquid or gas is closed.
2. The resealable positive well-flushing oil and gas drainage and injection device of claim 1, wherein: the lower end of the oil outlet cover (3) is provided with a moving space (15), and the outlet of each bent slide way (11) is positioned at the bottom edge of the moving space (15); when the flow channel of liquid or gas is opened, the valve ball (7) upwards supports the valve ball through the push-pull flexible shafts (6) and enters the moving space (15).
3. The resealable positive well-flushing oil and gas drainage and injection device of claim 1, wherein: the edge of the upper surface and the edge of the lower surface of the opening disc (4) are respectively and uniformly provided with a plurality of shunting oil passages (14) along the circumferential direction.
4. The resealable positive well-flushing oil and gas evacuation and injection device of claim 3, wherein: the branch oil passage (14) is inclined downwards from inside to outside.
5. The resealable positive well-flushing oil and gas drainage and injection device of claim 1, wherein: the opening disc (4) is provided with a through hole A (18) for liquid or gas to flow through, and the oil outlet cover (3) is provided with a through hole B (21) for liquid or gas to flow through.
6. The resealable positive well-flushing oil and gas drainage and injection device of claim 5, wherein: the bottom surface of the opening disc (4) is provided with a punching shaft mounting hole A (19) at the periphery of the through hole A (18), the outer edge of the punching shaft mounting hole A (19) extends downwards along the axial direction, a groove (16) is further formed in the middle of the bottom surface of the opening disc (4), and the upper end of the spring (9) is abutted to the inside of the groove (16).
7. The resealable positive well-flushing oil and gas drainage and injection device of claim 5, wherein: the oil outlet cover (3) is provided with a punching shaft mounting hole B (20) on the periphery of the through hole B (20), the outer edge of the punching shaft mounting hole B (20) extends upwards along the axial direction to form an accommodating space (17), and the lower end of the spring (9) abuts against the inside of the accommodating space (17).
8. The resealable positive well-flushing oil and gas drainage and injection device of claim 1, wherein: the lower end of the bent slideway (11) is a bent part which is bent from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908425.8A CN112031718A (en) | 2020-09-02 | 2020-09-02 | Well-flushing oil and gas drainage and injection device capable of being sealed repeatedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908425.8A CN112031718A (en) | 2020-09-02 | 2020-09-02 | Well-flushing oil and gas drainage and injection device capable of being sealed repeatedly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112031718A true CN112031718A (en) | 2020-12-04 |
Family
ID=73591084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010908425.8A Pending CN112031718A (en) | 2020-09-02 | 2020-09-02 | Well-flushing oil and gas drainage and injection device capable of being sealed repeatedly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112031718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023076838A1 (en) * | 2021-10-28 | 2023-05-04 | Baker Hughes Oilfield Operations Llc | Injection valve, method and system |
-
2020
- 2020-09-02 CN CN202010908425.8A patent/CN112031718A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023076838A1 (en) * | 2021-10-28 | 2023-05-04 | Baker Hughes Oilfield Operations Llc | Injection valve, method and system |
| US11920429B2 (en) | 2021-10-28 | 2024-03-05 | Baker Hughes Oilfield Operations Llc | Injection valve, method and system |
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