CN204312010U - The quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well - Google Patents
The quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well Download PDFInfo
- Publication number
- CN204312010U CN204312010U CN201420735715.7U CN201420735715U CN204312010U CN 204312010 U CN204312010 U CN 204312010U CN 201420735715 U CN201420735715 U CN 201420735715U CN 204312010 U CN204312010 U CN 204312010U
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- China
- Prior art keywords
- sleeve
- cartridge
- moving spring
- well
- polished rod
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Abstract
The utility model discloses the quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well, comprise supporting positive cover, sleeve, cartridge, back-moving spring, cylinder body, " O " RunddichtringO, piston, polished rod, high pressure line; It is characterized in that: described polished rod is provided with cartridge and sleeve, described cartridge is arranged on the inner side of sleeve, between cartridge and sleeve, be provided with supporting positive cover; Adopt thread connection between described sleeve and cylinder body, in cylinder interior, above sleeve, be provided with back-moving spring, between back-moving spring and polished rod, be provided with supporting positive cover equally; Be provided with piston above described back-moving spring, described cylinder body and piston realize sealing by " O " RunddichtringO, form sealed chamber; Described high pressure line is arranged between production tree oil pipe and sealed chamber, and production tree oil pipe and sealed chamber are communicated.The utility model relies on water pumping gas production well self well head pressure, can regulate wellhead polish rod seal degree fast and automatically.
Description
Technical field
The utility model relates to oil and gas production field, is specifically related to the quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well.
Background technology
In gas exploitation course, when formation water output, air-flow rely on self-energy water or liquid can not be carried into ground from shaft bottom, will there is hydrops in shaft bottom, affect gas well output and recovery ratio.Water pumping gas production produces aqueous vapor field to produce the inevitable measure that the middle and later periods maintains gas well output, raising gas deposit recovery efficiency.Oil pumper production system (system taken out by normal abbreviation machine) is one of main method of water pumping gas production.
But in machine water-pumping/draining gas recovery, well head pressure fluctuation range is large, and when taking out spray soon, well head pressure will raise fast, the sealing difficulty of wellhead polish rod, potential safety hazard are larger.
Summary of the invention
(1) technical problem that will solve
For solving the problem, the utility model aims to provide a kind of well mouth sealing device relying on self well head pressure of water pumping gas production well to regulate wellhead polish rod seal degree fast and automatically.
Well head oil pressure is introduced in the plunger shaft on well mouth sealing device top by high pressure line by this device, oil pressure is acted in cartridge and produces the sealing of extruding force realization to polished rod.Before oil pumper starts, rely on the sealing of pre-pressing force realization to polished rod to cartridge; In oil pumper manufacturing process, well head oil pressure raises gradually, increases gradually, realize automatic, the quick adjustment to polished rod seal power to the sealing force (oil pressure crush seal packing element) of polished rod; Well head oil pressure is higher, sealing force is larger, thus ensures the positiver sealing of well head in machine water-pumping/draining gas recovery.
(2) technical scheme
The quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well, comprises supporting positive cover, sleeve, cartridge, back-moving spring, cylinder body, " O " RunddichtringO, piston, polished rod, high pressure line; It is characterized in that: described polished rod is provided with cartridge and sleeve, described cartridge is arranged on the inner side of sleeve, between cartridge and sleeve, be provided with supporting positive cover; Adopt thread connection between described sleeve and cylinder body, in cylinder interior, above sleeve, be provided with back-moving spring, between back-moving spring and polished rod, be provided with supporting positive cover equally; Be provided with piston above described back-moving spring, described cylinder body and piston realize sealing by " O " RunddichtringO, form sealed chamber; Described high pressure line is arranged between production tree oil pipe and sealed chamber, and production tree oil pipe and sealed chamber are communicated.
Further, described high pressure line material available metal pipeline or flexible pipe.
Further, the thread connection between described sleeve and cylinder body can produce pretightning force, makes packing element expand, ensure at lower pressure lower seal polished rod.
Further, well head pressure is introduced into the sealed chamber of cylinder body and piston space by described high pressure line, along with the carrying out of machine water-pumping/draining gas production, well head oil press liter, well head pressure promotes descent of piston, increase well head pressure to cartridge, well head pressure is higher, acts on to the pressure of cartridge larger, packing element deflection increases, and ensures the sealing of high pressure lower rubber cylinder and polished rod.
Further, after well head oil pressure drop is low, back-moving spring promotes piston stroking upward, thus reduces the active force to cartridge, and then reduces cartridge to the sealing load of polished rod, with the change of autobalance well head pressure.
(3) beneficial effect
The utility model compared with prior art, a kind of machine water-pumping/draining gas recovery well of the present utility model quick self-balancing well mouth sealing device its there is following beneficial effect:
(1) rely on the thread connection between sleeve and cylinder body to produce pretightning force (pressure cap relative to conventional packing box), make packing element expand, ensure at lower pressure lower seal polished rod.
(2) well head pressure is by high pressure line " introducing " to cylinder body and piston space, and along with the carrying out of machine water-pumping/draining gas production, well head oil press liter, well head pressure promotes descent of piston, increases well head pressure to cartridge.
(3) well head pressure is higher, acts on to the pressure of cartridge larger, and packing element deflection increases, and ensures the sealing of high pressure lower rubber cylinder and polished rod.
(4) after well head pressure reduces, piston is up under action of reset spring, acts on the corresponding reduction of power in cartridge, and the sealing force between packing element and polished rod reduces.
(5) sealing effectiveness can adapt to the Rapid Variable Design of well head pressure automatically.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Mark in accompanying drawing and component mark: 1-supporting positive cover; 2-sleeve; 3-cartridge; 4-back-moving spring; 5-cylinder body; 6-" O " RunddichtringO; 7-piston; 8-polished rod; 9-high pressure line; 10-production tree tubing valve; The little four-way of 11-production tree.
Detailed description of the invention
As shown in Figure 1, the quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well of the present utility model, comprises supporting positive cover 1, sleeve 2, cartridge 3, back-moving spring 4, cylinder body 5, " O " RunddichtringO 6, piston 7, polished rod 8, high pressure line 9; Production tree tubing valve 10; The little four-way 11 of production tree; It is characterized in that: described polished rod 8 is provided with cartridge 3 and sleeve 2, described cartridge 3 is arranged on the inner side of sleeve 2, is provided with supporting positive cover 1 between cartridge 3 and sleeve 2; Thread connection is adopted between described sleeve 2 and cylinder body 5, inner at cylinder body 5, be provided with back-moving spring 4 above sleeve 2, between back-moving spring 4 and polished rod 8, be provided with supporting positive cover 1 equally; Be provided with piston 7 above described back-moving spring 4, described cylinder body 5 and piston 7 realize sealing by " O " RunddichtringO 6, form sealed chamber; Described high pressure line 9 is arranged between production tree oil pipe and sealed chamber, and production tree oil pipe and sealed chamber are communicated.
Further, described high pressure line 9 material available metal pipeline or flexible pipe.
Further, the thread connection between described sleeve 2 and cylinder body 5 can produce pretightning force, cartridge 3 is expanded, ensures at lower pressure lower seal polished rod 8.
Further, well head pressure is introduced into the sealed chamber between cylinder body 5 and piston 7 by described high pressure line 9, along with the carrying out of machine water-pumping/draining gas production, well head oil press liter, it is descending that well head pressure promotes piston 7, increase well head pressure to cartridge 3, well head pressure is higher, acts on to the pressure of cartridge 3 larger, cartridge 3 deflection increases, and ensures the sealing of seal under high pressures packing element 3 and polished rod 8.
Further, after well head oil pressure drop is low, it is up that back-moving spring 4 promotes piston 7, thus reduce the active force to cartridge 3, and then reduce the sealing load of cartridge 3 pairs of polished rods 8, with the change of autobalance well head pressure.
The content that the utility model does not elaborate is the common practise of those skilled in the art.
Embodiment recited above is only be described preferred embodiment of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that this area ordinary person makes the technical solution of the utility model and improvement; protection domain of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (2)
1. the quick self-balancing well mouth sealing device of machine water-pumping/draining gas recovery well, comprises supporting positive cover, sleeve, cartridge, back-moving spring, cylinder body, " O " RunddichtringO, piston, polished rod, high pressure line; It is characterized in that: described polished rod is provided with cartridge and sleeve, described cartridge is arranged on the inner side of sleeve, between cartridge and sleeve, be provided with supporting positive cover; Adopt thread connection between described sleeve and cylinder body, in cylinder interior, above sleeve, be provided with back-moving spring, between back-moving spring and polished rod, be provided with supporting positive cover equally; Be provided with piston above described back-moving spring, described cylinder body and piston realize sealing by " O " RunddichtringO, form sealed chamber; Described high pressure line is arranged between production tree oil pipe and sealed chamber, and production tree oil pipe and sealed chamber are communicated.
2. the quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well according to claim 1, is characterized in that: described high pressure line material available metal pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735715.7U CN204312010U (en) | 2014-11-27 | 2014-11-27 | The quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735715.7U CN204312010U (en) | 2014-11-27 | 2014-11-27 | The quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204312010U true CN204312010U (en) | 2015-05-06 |
Family
ID=53134332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420735715.7U Expired - Fee Related CN204312010U (en) | 2014-11-27 | 2014-11-27 | The quick self-balancing well mouth sealing device of a kind of machine water-pumping/draining gas recovery well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204312010U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927368A (en) * | 2020-07-17 | 2020-11-13 | 华运隆腾机械制造有限公司 | Well head and sealing protection device |
-
2014
- 2014-11-27 CN CN201420735715.7U patent/CN204312010U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927368A (en) * | 2020-07-17 | 2020-11-13 | 华运隆腾机械制造有限公司 | Well head and sealing protection device |
| CN111927368B (en) * | 2020-07-17 | 2021-06-22 | 华运隆腾机械制造有限公司 | Well head and sealing protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151127 |