CN205243429U - Edge natural gas well well head protection and mining devices - Google Patents
Edge natural gas well well head protection and mining devices Download PDFInfo
- Publication number
- CN205243429U CN205243429U CN201520859888.4U CN201520859888U CN205243429U CN 205243429 U CN205243429 U CN 205243429U CN 201520859888 U CN201520859888 U CN 201520859888U CN 205243429 U CN205243429 U CN 205243429U
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- natural gas
- gas well
- oil pipe
- plug
- well
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Abstract
The utility model discloses an edge natural gas well well head protection device, include the oil pipe who is connected through tubing coupling, oil pipe's outside cover has the sleeve pipe, is connected with the casing head on the sleeve pipe, and sheathed tube top cover has protection casing, protection casing and casing head looks rigid coupling, tubing coupling sets up at the cover intraductally, and the last from the bottom up of tubing coupling has cup jointed firm gasket, wooden plug, oil pipe checkpost in proper order, oil pipe top and bottom are provided with plug and lower plug respectively, upward are connected with the manometer on the plug. The utility model discloses a replacing original cement stopper shut -in well, not only having solved marginal natural gas well and injured because of the potential safety hazard that long period unattended management exists, the gas -bearing formation of having avoided cement stopper shutoff gas well to lead to the fact in addition many times, the gas -bearing formation has been protected to brill cement stopper work progress when having shortened the deblocking, has simplified construction procedure, practices thrift the cost.
Description
Technical field
The utility model belongs to natural gas well head device technique field, is specifically related to a kind of edge natural gas well wellhead protecting and quarrying apparatus.
Background technology
The edge natural gas well is because of problems such as natural gas field Productivity Construction progresses, and the long period can not be accessed surface production pipe network, for a long time in no supervision state, exists great potential safety hazard. For the requirement of safety and environment protection, the fire disaster of avoiding natural gas leaking etc. to cause, the main practice of petroleum industry is that gas-bearing formation and one section of cement plug of well head note of opening at natural gas well carries out temporary shut-in well at present. For the gas well that also needs exploitation to go into operation, the method for cement plug shut-in well has increased construction operation expense on the one hand, needs to use well killing fluid kill-job on the other hand before shut-in well later, cause the pollution of natural gas reservoirs, and need to bore the boiling water bod in the time of deblocking, construction is complicated, loses time.
Utility model content
The purpose of this utility model is to provide a kind of edge natural gas well wellhead protecting and quarrying apparatus, solved in existing natural gas well shut-in well technology pollute natural gas reservoirs, the complicated problem of constructing.
The technical side that a kind of edge of the utility model natural gas well wellhead protecting and quarrying apparatus adopt is, comprise the oil pipe being connected by tubing coupling, the outside cover of oil pipe has sleeve pipe, is connected with casing head on sleeve pipe, the top cover of sleeve pipe has protective cover, protective cover and casing head Joint; Tubing coupling is arranged in sleeve pipe, is socketed with successively from top to bottom firm pad, tampion, oil pipe clamp in tubing coupling; Oil pipe top and bottom are respectively arranged with plug and lower plug, on upper plug, are connected with Pressure gauge.
Feature of the present utility model is also,
Oil pipe is no less than two.
Sleeve pipe and casing head are threaded connection.
Casing head and protective cover link are flange plate-like, and casing head and protective cover are bolted.
Tampion is evenly distributed with some tanks for one week in the form of a ring and along outer wall.
Lower plug is provided with hydrophthalmia on center.
Tank is no less than two and for groove.
The beneficial effects of the utility model are; by using the utility model to replace original cement plug shut-in well; not only solve the potential safety hazard that the edge natural gas well exists because of long period unattended; and the gas-bearing formation of having avoided cement plug shutoff gas well to cause repeatedly injures; drilling out work progress while having shortened deblocking; protect gas-bearing formation, simplified operational procedure, cost-saving.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of edge of the utility model natural gas well wellhead protecting and quarrying apparatus;
Fig. 2 is the structural representation of tampion in a kind of edge of the utility model natural gas well wellhead protecting and quarrying apparatus.
In figure, 1. oil pipe, 2. tubing coupling, 3. sleeve pipe, 4. casing head, 5. protective cover, 6. goes up plug, 7. descends plug, 8. Pressure gauge, 9. firm pad, 10. tampion, 11. oil pipe clamps, 12. tanks, 13. hydrophthalmias.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
A kind of edge natural gas well wellhead protecting of the utility model and quarrying apparatus, as shown in Figure 1, comprise the oil pipe 1 being connected by tubing coupling 2, the outside cover of oil pipe 1 has sleeve pipe 3, on sleeve pipe 3, be connected with casing head 4, the top cover of sleeve pipe 3 has protective cover 5, protective cover 5 and casing head 4 Joints; Tubing coupling 2 is arranged in sleeve pipe 3, is socketed with successively from top to bottom firm pad 9, tampion 10, oil pipe clamp 11 in tubing coupling 2; Oil pipe 1 top and bottom are respectively arranged with plug 6 and lower plug 7, on upper plug 6, are connected with Pressure gauge 8.
As shown in Figure 1, oil pipe 1 is no less than two; Sleeve pipe 3 is threaded connection with casing head 4; Casing head 4 is flange plate-like with protective cover 5 links, and casing head 4 is bolted with protective cover 5; As shown in Figure 2, tampion 10 is evenly distributed with some tanks 12 for one week in the form of a ring and along outer wall; Lower plug is provided with hydrophthalmia 13 on 7 centers; Tank 1 is no less than two and for groove.
The utility model is according to the development process of the edge natural gas well, for the gas well that cannot access surface pipeline network in 3-5, first connect device according to Fig. 1, then device is slowly lowered to pit shaft, set and fix bolt, finally with cementing truck to oil pipe 1, the annular space between oil jacket 1 and sleeve pipe 3 is suppressed, suppress 20Mpa, 10min, qualified in the time that pressure drop is less than 0.03Mpa; Need to change plug when the interior pressure-bearing of oil pipe 1 is defective, the annular space pressure-bearing between oil jacket 1 and sleeve pipe 3 is defective, needs to change tampion 10.
The utility model is by using upper plug 6, lower plug 7 to seal oil pipe 1, between oil pipe 1 and sleeve pipe 3, seal annular space position by firm pad 9, tampion 10, oil pipe clamp 11, prevent that gas from passing through oil pipe 1 and sleeve pipe 3 annular spaces leak, protected the safety of the edge natural gas well; On lower plug 7, be provided with hydrophthalmia 13, on tampion 10, be provided with tank 12, can ensure in decentralization process the risk of breaking plant due to reservoir pressure, in the time that pressure increases gradually, liquid is pushed to access to plant inside by hydrophthalmia 13 and tank 12, release the pressure, in the time that pressure will reduce, liquid flows out by hydrophthalmia 13 and tank 12.
The utility model is by replacing original cement plug shut-in well; not only solve the potential safety hazard that the edge natural gas well exists because of long period unattended; and the gas-bearing formation of having avoided cement plug shutoff gas well to cause repeatedly injures; drilling out work progress while having shortened deblocking; protect gas-bearing formation; simplify operational procedure, saved cost.
Claims (7)
1. an edge natural gas well wellhead protecting and quarrying apparatus, it is characterized in that, comprise the oil pipe (1) being connected by tubing coupling (2), the outside cover of oil pipe (1) has sleeve pipe (3), on sleeve pipe (3), be connected with casing head (4), the top cover of sleeve pipe (3) has protective cover (5), protective cover (5) and casing head (4) Joint; Described tubing coupling (2) is arranged in sleeve pipe (3), is socketed with successively from top to bottom firm pad (9), tampion (10), oil pipe clamp (11) in tubing coupling (2); Described oil pipe (1) top and bottom are respectively arranged with plug (6) and lower plug (7), are connected with Pressure gauge (8) on upper plug (6).
2. a kind of edge natural gas well wellhead protecting according to claim 1 and quarrying apparatus, is characterized in that, described oil pipe (1) is no less than two.
3. a kind of edge natural gas well wellhead protecting according to claim 1 and quarrying apparatus, is characterized in that, described sleeve pipe (3) is threaded connection with casing head (4).
4. a kind of edge natural gas well wellhead protecting according to claim 1 and quarrying apparatus; it is characterized in that; described casing head (4) is flange plate-like with protective cover (5) link, and casing head (4) is bolted with protective cover (5).
5. a kind of edge natural gas well wellhead protecting according to claim 1 and quarrying apparatus, is characterized in that, described tampion (10) is evenly distributed with some tanks (12) for one week in the form of a ring and along outer wall.
6. a kind of edge natural gas well wellhead protecting according to claim 1 and quarrying apparatus, is characterized in that, on described lower plug (7) center, is provided with hydrophthalmia (13).
7. a kind of edge natural gas well wellhead protecting according to claim 5 and quarrying apparatus, is characterized in that, described tank (12) is no less than two and for groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520859888.4U CN205243429U (en) | 2015-10-30 | 2015-10-30 | Edge natural gas well well head protection and mining devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520859888.4U CN205243429U (en) | 2015-10-30 | 2015-10-30 | Edge natural gas well well head protection and mining devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205243429U true CN205243429U (en) | 2016-05-18 |
Family
ID=55942509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520859888.4U Active CN205243429U (en) | 2015-10-30 | 2015-10-30 | Edge natural gas well well head protection and mining devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205243429U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965962A (en) * | 2019-11-29 | 2020-04-07 | 中国石油集团川庆钻探工程有限公司 | Method for recovering production and deblocking of sealed gas well |
-
2015
- 2015-10-30 CN CN201520859888.4U patent/CN205243429U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965962A (en) * | 2019-11-29 | 2020-04-07 | 中国石油集团川庆钻探工程有限公司 | Method for recovering production and deblocking of sealed gas well |
| CN110965962B (en) * | 2019-11-29 | 2022-05-06 | 中国石油集团川庆钻探工程有限公司 | Method for recovering production and deblocking of sealed gas well |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |