CN201568004U - Coal bed gas dual-purpose production and exhaust well mouth device - Google Patents
Coal bed gas dual-purpose production and exhaust well mouth device Download PDFInfo
- Publication number
- CN201568004U CN201568004U CN200920285361XU CN200920285361U CN201568004U CN 201568004 U CN201568004 U CN 201568004U CN 200920285361X U CN200920285361X U CN 200920285361XU CN 200920285361 U CN200920285361 U CN 200920285361U CN 201568004 U CN201568004 U CN 201568004U
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- flange
- bed gas
- coal bed
- sleeve pipe
- screw pump
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- Expired - Fee Related
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Abstract
The utility model discloses a coal bed gas dual-purpose production and exhaust well mouth device which belongs to the coal bed gas production field and mainly comprises a sleeve pipe, a sleeve pipe pup joint, flanges, a valve and a connecting hoop, wherein by-pass pipes communicated with the sleeve pipe are arranged on both sides of the sleeve pipe, the sleeve pipe pup joint is fixedly connected with a bottom flange, an oil pipe thread connecting hoop is fixedly connected with an upper flange, a screw pump base is fixedly connected with the upper flange, and a plane pad or a steel ring is arranged between one surface of the oil pipe thread connecting hoop and the bottom flange, meanwhile, the other surface of the oil pipe thread connecting hoop is provided with a steel ring groove which corresponds with the butting surface of the lower flange of a screw pump, and a well mouth tee is threadedly connected with the oil pipe thread connecting hoop through a screw thread mouth. The coal bed gas dual-purpose production and exhaust well mouth device has the advantages of reasonable structure design, light weight and low cost, can simultaneously satisfy the use installation demands of the screw pump and a pumping unit, is suitable for various well bore structures and the needs of sleeve pipe procedures, and can be used for various working conditions.
Description
Technical field
The utility model relates to the dual-purpose row of a kind of coal bed gas and adopts wellhead assembly, is to be used to control the flow of coal bed gas and the device of well head pressure after the completion, belongs to the coal-bed gas exploitation field.
Background technology
Comparatively speaking coal bed gas well and oil well have the advantages that the pressure requirement is low, down-hole string is few.The ground installation of coal-bed gas exploitation mainly is screw pump or oil pumper.By the structures shape of screw pump, just must use 250 model production tree well head device with screw pump, realize fixedly connected to the two by big four, flange, this wellhead assembly is one-body molded by casting technique, and is heavy, cost is high; Oil pumper mainly uses the 150 type production trees or the wellhead assembly of low-pressure more.Also there is not a kind of wellhead assembly can satisfy the use installation requirement of screw pump and oil pumper simultaneously in the prior art.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of existing coal bed gas wellhead device, a kind of " the dual-purpose row of coal bed gas adopts wellhead assembly " is provided, be a kind of reasonable in design, in light weight, manufacture craft is simple, cost is low, easy to install, the use installation requirement that can satisfy screw pump and oil pumper simultaneously, the dual-purpose row of the coal bed gas that is used for different working conditions that being suitable for various casing programmes and casing program needs adopts wellhead assembly.
To achieve these goals, technical solution adopted in the utility model is: the dual-purpose row of this coal bed gas adopts wellhead assembly and mainly is made up of sleeve pipe, casing nipple, flange, valve, box cupling, be provided with two symmetrical mutually holes in the sleeve pipe both sides, be welded with and the corresponding bypass pipe in hole by casing nipple on two symmetrical holes, bypass pipe communicates with sleeve pipe.Casing nipple is fixedlyed connected with end flange, and the pipe wire box cupling is fixedlyed connected with upper flange.Between end flange and upper flange, be provided with plane pad or steel ring, and with studs, nut that end flange and upper flange is fastening, sealing of realization face or steel ring sealing state.Upper surface at upper flange is provided with the steel ring seal groove that adapts with the screw pump base, its screw pump base is fixedlyed connected with upper flange, be provided with plane pad or steel ring between the one side of pipe wire box cupling and end flange, the another side at the pipe wire box cupling is provided with the steel ring slot that adapts with screw pump lower flange interface simultaneously; The length and the triangular fixed range that connect the flange connecting rod of end flange, pipe wire box cupling and screw pump lower flange adapt.Also be provided with on the pipe wire box cupling and the corresponding silk thread mouth of well head threeway, the well head threeway is threaded by silk thread mouth with the pipe wire box cupling.
The utility model and existing coal bed gas row adopt wellhead assembly and compare and have following advantage:
Reasonable in design, in light weight, manufacture craft is simple, cost is low, easy to install, the use installation requirement that can satisfy screw pump and oil pumper simultaneously, the dual-purpose row of the coal bed gas that is used for different working conditions that being suitable for various casing programmes and casing program needs adopts wellhead assembly;
2. because of wellhead assembly is symmetrical arranged bypass pipe in the sleeve pipe both sides, make that wellhead assembly is in light weight, cost is low, can reduce cost more than 50%;
3. mainly realize connection because of this wellhead assembly with welding manner, simple to operation;
4. because of both being provided with the bindiny mechanism with screw pump on the pipe wire box cupling, be provided with again and the corresponding silk thread mouth of well head threeway, make this wellhead assembly need not to change in addition well head, can satisfy the use installation requirement of screw pump and oil pumper simultaneously, be that a kind of dual-purpose row of the coal bed gas that is used for different working conditions who is suitable for various casing programmes and casing program needs adopts wellhead assembly.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is another example structure schematic diagram of the utility model.
Among the figure 1, sleeve pipe, 2, the bypass flange, 3. casing nipple, 4. end flange 5. upper flanges, 6. steel ring slot, 7. pipe wire box cupling, 8. well head threeway, 9. bolt, 10. bypass pipe, 11. screw pumps.
The specific embodiment
The utility model is described in further detail by non-limiting example below in conjunction with accompanying drawing.
Embodiment one:
The utility model is shown in figure one, the dual-purpose row of this coal bed gas adopts wellhead assembly and mainly is made up of sleeve pipe, casing nipple, flange, valve, box cupling, be provided with two symmetrical mutually holes in sleeve pipe 1 both sides by machine, on two symmetrical holes, be welded with and the corresponding bypass pipe 10 in hole by casing nipple 3, replace the well head big four, bypass pipe 10 communicates with sleeve pipe 1.Casing nipple 3 is welded to connect with end flange 4, pipe wire box cupling 7 is welded to connect with upper flange 5, between end flange 4 and upper flange 5, be provided with asbestos plane pad or steel ring, and with studs, nut that end flange 4 and upper flange 5 is fastening, sealing of realization face or steel ring sealing state.Also be provided with on the pipe wire box cupling 7 and well head threeway 8 corresponding silk thread mouths, well head threeway 8 and pipe wire box cupling 7 are threaded by silk thread mouth, realize the state of installing and using with the ground installation oil pumper.
Embodiment two:
The dual-purpose row of this coal bed gas adopts wellhead assembly as shown in Figure 2, its preparation method and step are same as embodiment one, different is is provided with the steel ring seal groove 6 that adapts with the screw pump base at the upper surface of upper flange 5, and its screw pump base and upper flange 5 are bolted to connection.4 of the one side of pipe wire box cupling 7 and end flanges are provided with asbestos plane pad or steel ring, another side at pipe wire box cupling 7 is provided with the steel ring slot that adapts with screw pump 11 lower flange interfaces simultaneously, by the flange connecting rod end flange 4, pipe wire box cupling 7 and screw pump 11 lower flanges are sealedly and fixedly connected, the length that connects the flange connecting rod of end flange 4, pipe wire box cupling 7 and screw pump 11 lower flanges will increase by 1/3 on original basis, realize the state of installing and using with the ground installation screw pump.
In sum, the dual-purpose row of this coal bed gas adopts wellhead assembly and has reasonable in design, in light weight, advantage that manufacture craft is simple, with low cost, easy to install, be a kind of use installation requirement that can satisfy simultaneously screw pump and oil pumper, be suitable for various casing programmes and adopt wellhead assembly with the dual-purpose row of coal bed gas who is used for different working conditions that casing program needs.
Claims (3)
1. the dual-purpose row of coal bed gas adopts wellhead assembly, mainly by sleeve pipe, casing nipple, flange, valve, box cupling is formed, it is characterized in that: be provided with two symmetrical mutually holes in sleeve pipe (1) both sides, on two symmetrical holes, be welded with and the corresponding bypass pipe in hole (10) by casing nipple (3), bypass pipe (10) communicates with sleeve pipe (1), casing nipple (3) is fixedlyed connected with end flange (4), pipe wire box cupling (7) is fixedlyed connected with upper flange (5), between end flange (4) and upper flange (5), be provided with plane pad or steel ring, and use studs, nut is fastening with end flange (4) and upper flange (5), sealing of realization face or steel ring sealing state, upper surface at upper flange (5) is provided with the steel ring seal groove (6) that adapts with the screw pump base, its screw pump base is fixedlyed connected with upper flange (5), be provided with plane pad or steel ring between pipe wire box cupling (7) and end flange (4), the another side at pipe wire box cupling (7) is provided with the steel ring seal groove that adapts with screw pump (11) lower flange interface simultaneously.
2. the dual-purpose row of a kind of coal bed gas according to claim 1 adopts wellhead assembly, it is characterized in that: pipe wire box cupling (7) is provided with and the corresponding silk thread mouth of well head threeway (8), and well head threeway (8) is threaded by silk thread mouth with pipe wire box cupling (7).
3. the dual-purpose row of a kind of coal bed gas according to claim 1 adopts wellhead assembly, it is characterized in that: the length and the triangular fixed range that connect the flange connecting rod of end flange (4), pipe wire box cupling (7) and screw pump (11) lower flange adapt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920285361XU CN201568004U (en) | 2009-12-19 | 2009-12-19 | Coal bed gas dual-purpose production and exhaust well mouth device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920285361XU CN201568004U (en) | 2009-12-19 | 2009-12-19 | Coal bed gas dual-purpose production and exhaust well mouth device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568004U true CN201568004U (en) | 2010-09-01 |
Family
ID=42660291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920285361XU Expired - Fee Related CN201568004U (en) | 2009-12-19 | 2009-12-19 | Coal bed gas dual-purpose production and exhaust well mouth device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568004U (en) |
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2009
- 2009-12-19 CN CN200920285361XU patent/CN201568004U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20121219 |