CN203257363U - Novel coal bed gas wellhead structure - Google Patents
Novel coal bed gas wellhead structure Download PDFInfo
- Publication number
- CN203257363U CN203257363U CN 201320179729 CN201320179729U CN203257363U CN 203257363 U CN203257363 U CN 203257363U CN 201320179729 CN201320179729 CN 201320179729 CN 201320179729 U CN201320179729 U CN 201320179729U CN 203257363 U CN203257363 U CN 203257363U
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- China
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- coal bed
- bed gas
- oil pipe
- novel coal
- gas well
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Abstract
The utility model relates to a novel coal bed gas wellhead structure. The novel coal bed gas wellhead structure is characterized in that the coal bed gas wellhead comprises an intermediate casing pipe, and a side outlet pipeline is welded on the intermediate casing pipe in a windowing mode and respectively connected with a threaded connection flat valve, a stop valve and a pressure gage. A bottom flange is welded on the intermediate casing pipe, a bearing step is machined in an inner hole of the bottom flange, an oil pipe hanger is installed in the inner hole of the bottom flange, oil pipe threads are arranged on the upper portion and the lower portion of the oil pipe hanger, an oil pipe is hung on the threads on the lower portion of the oil pipe hanger, the upper portion of the oil pipe hanger is connected with a threaded tee joint through the oil pipe threads, and the top of the oil pipe hanger is connected with a flat valve, a plug, a stop valve and a pressure gage to control main channel circulation and provide a device connector. According to the technical scheme, the novel coal bed gas wellhead structure is simple in structure, convenient to operate, reliable in seal, safe in use, convenient to assemble and disassemble and low in cost, weight is reduced, and large-scale popularization and utilization are facilitated.
Description
Technical field
The utility model relates to a kind of shaft collar, relates in particular to a kind of novel coal bed gas well mouth structure.
Background technology
Coal gas industry is nearly two new industries that emerge in the world during the last ten years.Coal bed gas is a kind of take adsorbed state as leading, generate and be stored in the methane gas in coal seam and the country rock thereof.The complex structure of coal bed gas well head of the prior art, pressure is low, and the output of individual well is very low, the exploitation cycle is long, the layout of the many wells of large tracts of land, and whole well head is heavy, cost is high, dismounting is inconvenient, so a kind of new coal bed gas well mouth structure of exigence solves above-mentioned technical problem.
Summary of the invention
The utility model is just for the technical problem that exists in the prior art, and a kind of simple in structure, simple operation, reliable, the lower-cost novel coal bed gas well mouth structure of sealing are provided, and the coal bed gas well mouth structure uses safety, and easy accessibility.
To achieve these goals, the technical solution of the utility model is as follows, a kind of novel coal bed gas well mouth structure, it is characterized in that described coal bed gas import comprises protective casing, described protective casing uplifting window weld side outlet line, described side outlet pipeline connects the flap type that is threaded, stop valve and a pressure meter, welding end flange processes carrying step and tubing hanger on the described protective casing in the flange endoporus of the described end, and described tubing hanger is provided with up and down oil pipe thread.
As a kind of improvement of the utility model, described tubing hanger bottom screw thread hangs oil pipe, and threeway links to each other with screw-type by tubing round thread on top, and the top connects flap type, plug, and stop valve and pressure meter are in order to control the main channel circulation and equipment interface is provided.
As a kind of improvement of the utility model, described coal bed gas well mouth structure also comprises sealing ring, upper flange, and described sealing ring is arranged between end flange and the upper flange.
As a kind of improvement of the utility model, described sealing ring is set to O type circle.
As a kind of improvement of the utility model, the quantity of described O type circle is 2 at least.
With respect to prior art, advantage of the present utility model is as follows, 1) this shaft collar meets the requirement that API 6A is ISO10423 well head and oil production equipment standard, upper lower flange all is 14MPa, the versatility of assurance equipment, standardization, and simple in structure, easy to operate; 2) sealing is reliable, uses safety, and easy accessibility, flange in the bottom adopt welding to link to each other with protective casing, have alleviated weight, have reduced cost, and execute-in-place is also very convenient; The independence of tubing hanger is the more convenient to operate of drilling team, also meets work habit; 3) quality lowers, and cost is lower, is convenient to promote the use of on a large scale, and upper flange directly is enclosed within on the tubing hanger by the hole, has both met standard.Can guarantee again sealing.Cost and weight have also been reduced simultaneously.The top connects by the screw-type threeway, can guarantee the safe and reliable of product again when having simplified product structure.
Description of drawings
Fig. 1 is the utility model overall structure schematic diagram;
Among the figure: 1, pressure meter, 2, stop valve, 3, plug, 4, flap type, 5, the screw-type threeway, 6, plug, 7, flap type, 9,0 type circle, 11,0 type circle, 12, pressure meter, 13, stop valve, 14, flap type, 16, protective casing, 17, end flange, 18, tubing hanger, 19, upper flange.
The specific embodiment
In order to deepen that understanding and cognition of the present utility model is made further instructions and introduces the utility model below in conjunction with the drawings and specific embodiments.
Embodiment 1:
Referring to Fig. 1, a kind of novel coal bed gas well mouth structure, described coal bed gas import comprises protective casing 16, described protective casing 16 uplifting window weld side outlet lines, described side outlet pipeline connects the flap type 14 that is threaded, stop valve 13 and a pressure meter 12, welding end flange 17 processes carrying step and tubing hanger 18 on the described protective casing in the flange endoporus of the described end, and described tubing hanger is provided with up and down oil pipe thread.This shaft collar meets the requirement that API 6A is ISO10423 well head and oil production equipment standard, and upper lower flange all is 14MPa, guarantees the versatility of equipment, standardization, and simple in structure, easy to operate, sealing is reliable, uses safety, easy accessibility.
Embodiment 2:As a kind of improvement of the utility model, described tubing hanger bottom screw thread hangs oil pipe, and top links to each other with screw-type threeway 5 by tubing round thread, and the top connects flap type 4, plug 3, and stop valve 2 and pressure meter 1 are in order to control the main channel circulation and equipment interface is provided.All the other structures are identical with embodiment 1 with advantage.
Embodiment 3:As a kind of improvement of the utility model, described coal bed gas well mouth structure also comprises sealing ring, and upper flange 19, described sealing ring are arranged between end flange 17 and the upper flange 19.All the other structures are identical with embodiment 1 with advantage.
Embodiment 4:As a kind of improvement of the utility model, described sealing ring is set to O type circle.All the other structures are identical with embodiment 1 with advantage.
Embodiment 5: as a kind of improvement of the utility model, the quantity of described O type circle is 2 at least.All the other structures are identical with embodiment 1 with advantage.
The utility model can also be combined to form new embodiment with at least one and the embodiment 1 in embodiment 2,3,4, the 5 described technical characterictics.
Operating principle:
At protective casing 16 welding end flanges 17, protective casing 16 uplifting window weld side outlet lines connect respectively be threaded flap type 14 and stop valve 13 pressure meters 12 etc., process the carrying step in end flange 17 endoporus, tubing hanger 18.Tubing hanger 18 all processes up and down oil pipe thread.The beneath oil pipe that hangs, top links to each other with screw-type threeway 5 by tubing round thread, and the top connects a flap type 4 and plug 3, stop valve 2, pressure meter 1 is in order to control the main channel circulation and equipment interface is provided.Screw-type threeway 5 links to each other, and the side mouth connects a flap type 7 and plug 6, in order to the switch of production control circulation with equipment interface is provided.Tubing hanger is respectively by O type circle 9, and it is reliable that O type circle 11 and end flange 17, upper flange 19 are realized sealing.
Need to prove that above-described embodiment only is preferred embodiment of the present utility model; be not used for limiting protection domain of the present utility model; being equal to replacement or substituting of having done on the basis of the above all belongs to protection domain of the present utility model, and protection domain of the present utility model is as the criterion with claims.
Claims (5)
1. novel coal bed gas well mouth structure, it is characterized in that, described coal bed gas import comprises protective casing, described protective casing uplifting window weld side outlet line, described side outlet pipeline connects the flap type that is threaded, stop valve and a pressure meter, welding end flange processes carrying step and tubing hanger on the described protective casing in the flange endoporus of the described end, and described tubing hanger is provided with up and down oil pipe thread.
2. novel coal bed gas well mouth structure according to claim 1, it is characterized in that, described tubing hanger bottom screw thread hangs oil pipe, threeway links to each other with screw-type by tubing round thread on top, the top connects flap type, plug, stop valve and pressure meter are in order to control the main channel circulation and equipment interface is provided.
3. novel coal bed gas well mouth structure according to claim 1 is characterized in that, described coal bed gas well mouth structure also comprises sealing ring, upper flange, and described sealing ring is arranged between end flange and the upper flange.
4. novel coal bed gas well mouth structure according to claim 3 is characterized in that, described sealing ring is set to O type circle.
5. novel coal bed gas well mouth structure according to claim 4 is characterized in that, the quantity of described O type circle is 2 at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320179729 CN203257363U (en) | 2013-04-11 | 2013-04-11 | Novel coal bed gas wellhead structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320179729 CN203257363U (en) | 2013-04-11 | 2013-04-11 | Novel coal bed gas wellhead structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257363U true CN203257363U (en) | 2013-10-30 |
Family
ID=49469940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320179729 Expired - Fee Related CN203257363U (en) | 2013-04-11 | 2013-04-11 | Novel coal bed gas wellhead structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675357A (en) * | 2013-12-02 | 2015-06-03 | 中国石油化工股份有限公司 | Simple wellhead device and application method thereof |
-
2013
- 2013-04-11 CN CN 201320179729 patent/CN203257363U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104675357A (en) * | 2013-12-02 | 2015-06-03 | 中国石油化工股份有限公司 | Simple wellhead device and application method thereof |
| CN104675357B (en) * | 2013-12-02 | 2017-05-24 | 中国石油化工股份有限公司 | Simple wellhead device and application method thereof |
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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: 20131030 Termination date: 20140411 |