CN210068047U - Pure metal sealing gas production wellhead device - Google Patents
Pure metal sealing gas production wellhead device Download PDFInfo
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- CN210068047U CN210068047U CN201920610606.5U CN201920610606U CN210068047U CN 210068047 U CN210068047 U CN 210068047U CN 201920610606 U CN201920610606 U CN 201920610606U CN 210068047 U CN210068047 U CN 210068047U
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- oil pipe
- gas production
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- metal sealing
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Abstract
The utility model relates to a pure metal sealing gas production wellhead device, which comprises a production casing, an oil pipe head, an adapter, a gas production tree and an oil pipe hanger; the top end face of the production sleeve is provided with a spacer ring; the spacer ring is in threaded connection with the inner wall of the tubing head; the production casing is sleeved with a metal supporting ring at a position close to the bottom flange of the oil pipe head, and the bottom flange of the oil pipe head is provided with a jackscrew at a corresponding position of the metal supporting ring in a matching way; a first metal sealing ring is arranged on the top surface of the metal supporting ring and between the production casing and the tubing head; a second metal sealing ring is arranged between the oil pipe hanger and the oil pipe head; and a third metal sealing ring is also arranged between the top of the oil pipe hanger and the adapter. The pure metal sealing gas production wellhead device of the utility model has the advantages of easy operation, large elastic space, high stability, corrosion resistance, erosion resistance, long service life and high sealing reliability; the drilling and gas production tasks can be executed under the high-pressure working condition of the gas production wellhead device.
Description
Technical Field
The utility model relates to a gas production well head field especially relates to a pure metal seal gas production well head device.
Background
In the prior art, with the sharp increase of the energy demand of clean and environment protection, the natural gas exploitation technology is more and more widely used, and the gas production wellhead device is more and more widely used. Therefore, higher requirements are put forward on the efficiency, safety, reliability, stability, service life and the like of the gas production wellhead device.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problems, the utility model provides a pure metal sealing gas production wellhead device which is easy to operate, large in elastic space, high in stability, corrosion resistant, scouring resistant, long in service life and high in sealing reliability; the drilling and gas production tasks can be executed under the high-pressure working condition of the gas production wellhead device.
The utility model provides a technical scheme that its technical problem adopted is: a pure metal sealing gas production wellhead device comprises a production casing, an oil pipe, a tubing head sleeved outside the production casing and the oil pipe, an adapter arranged at the top end of the tubing head, a gas production tree connected with the top end of the adapter, and a tubing hanger arranged inside the tubing head and used for fixing the oil pipe; the top end face of the production sleeve is provided with a spacer ring; the spacer ring is in threaded connection with the inner wall of the tubing head; the production casing is sleeved with a metal supporting ring at a position close to the bottom flange of the oil pipe head, and the bottom flange of the oil pipe head is provided with a jackscrew at a corresponding position of the metal supporting ring in a matching way; a first metal sealing ring is arranged on the top surface of the metal supporting ring and between the production casing and the tubing head; the extrusion amount of the first metal sealing ring is adjusted through the matching of the jackscrew and the metal supporting ring; a second metal sealing ring is arranged between the oil pipe hanger and the oil pipe head; and a third metal sealing ring is also arranged between the top of the oil pipe hanger and the adapter.
And a rubber seal is arranged between the production casing and the tubing head at a position above the first metal sealing ring and is used as a secondary seal.
And the oil pipe hanger is connected with the oil pipe by adopting a gas seal buckle.
The utility model has the advantages that: the pure metal sealing gas production wellhead device of the utility model has the advantages of easy operation, large elastic space, high stability, corrosion resistance, erosion resistance, long service life and high sealing reliability; the drilling and gas production tasks can be executed under the high-pressure working condition of the gas production wellhead device.
Drawings
FIG. 1 is a schematic illustration of a pure metal sealed gas production wellhead assembly according to an embodiment;
FIG. 2 is an enlarged, fragmentary schematic view of a tubing head and adapter of an embodiment of a pure metal sealed gas production wellhead;
FIG. 3 is an enlarged partial view of portion A of FIG. 2;
fig. 4 is a partially enlarged schematic view of a portion B in fig. 2.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Examples
As shown in fig. 1 to 4, the present embodiment provides a pure metal sealed gas production wellhead device, which includes a production casing 5, a tubing 6, a tubing head 1 sleeved outside the production casing 5 and the tubing 6, an adapter 2 disposed at the top end of the tubing head 1, a gas production tree 3 connected to the top end of the adapter 2, and a tubing hanger 4 disposed inside the tubing head 1 for fixing the tubing 6; a spacer ring 13 is arranged on the top end surface of the production casing 5; the spacer ring 13 is in threaded connection with the inner wall of the tubing head 1; the production casing 5 is sleeved with a metal supporting ring 7 at a position close to a bottom flange of the oil pipe head 1, and a jackscrew 8 is arranged at the bottom flange of the oil pipe head 1 in a matching way at a position corresponding to the metal supporting ring 7; a first metal sealing ring 9 is arranged on the top surface of the metal supporting ring 7 and between the production casing 5 and the tubing head 1; the extrusion amount of the first metal sealing ring 9 is adjusted through the matching of the jackscrew 8 and the metal supporting ring; a second metal sealing ring 10 is arranged between the oil pipe hanger 4 and the oil pipe head 1; a third metal sealing ring 11 is also arranged between the top of the oil pipe hanger 4 and the adapter 2; a rubber seal 14 is arranged between the production casing 5 and the tubing head 1 above the RCS metal seal ring 9 and is used as a secondary seal; the oil pipe hanger 4 is connected with the oil pipe 6 through a gas seal buckle 12.
In the pure metal sealing gas production wellhead device of the embodiment, the first metal sealing ring is an RCS metal sealing ring which is independent of a casing head or a casing four-way joint, namely the structure of the casing head or the casing four-way joint does not need to be considered during design; the height that the metal supporting ring rose can be adjusted through the length of adjusting jackscrew screw in according to the surface roughness of production sheathed tube, and then the decrement of control RCS metal seal circle to realize the high-pressure seal of different thickness environment.
In the pure metal sealing gas production wellhead device of the embodiment, the second metal ring adopts an SEM metal sealing ring, and the third metal sealing ring adopts an SBM metal sealing ring; the metal sealing ring has the characteristics of scouring resistance, corrosion resistance, long service life, high stability, high sealing pressure, safety and the like.
According to the pure metal sealed gas production wellhead device, the production casing can be tightly attached to the upper surface of the production casing through the top sealing of the spacer ring, so that the casing is prevented from vibrating up and down due to sudden change of underground pressure, and the effect of stabilizing the production casing is achieved; the screw-in type capping production casing gives the production casing cutter a large elastic space at the cutting height, so that the cutting height is easily controlled within a reasonable range.
The pure metal sealing gas production wellhead device is easy to operate, large in elastic space, high in stability, resistant to corrosion and scouring, long in service life and high in sealing reliability; the drilling and gas production tasks can be executed under the high-pressure working condition of the gas production wellhead device.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a pure metal seals gas production wellhead assembly which characterized in that: the device comprises a production casing, an oil pipe, a tubing head sleeved outside the production casing and the oil pipe, an adapter arranged at the top end of the tubing head, a gas production tree connected with the top end of the adapter, and an oil pipe hanger arranged inside the tubing head and used for fixing the oil pipe; the top end face of the production sleeve is provided with a spacer ring; the spacer ring is in threaded connection with the inner wall of the tubing head; the production casing is sleeved with a metal supporting ring at a position close to the bottom flange of the oil pipe head, and the bottom flange of the oil pipe head is provided with a jackscrew at a corresponding position of the metal supporting ring in a matching way; a first metal sealing ring is arranged on the top surface of the metal supporting ring and between the production casing and the tubing head; the extrusion amount of the first metal sealing ring is adjusted through the matching of the jackscrew and the metal supporting ring; a second metal sealing ring is arranged between the oil pipe hanger and the oil pipe head; and a third metal sealing ring is also arranged between the top of the oil pipe hanger and the adapter.
2. The pure metal sealed gas production wellhead assembly of claim 1, wherein: and a rubber seal is arranged between the production casing and the tubing head at a position above the first metal sealing ring and is used as a secondary seal.
3. The pure metal sealed gas production wellhead assembly of claim 1, wherein: and the oil pipe hanger is connected with the oil pipe by adopting a gas seal buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610606.5U CN210068047U (en) | 2019-04-29 | 2019-04-29 | Pure metal sealing gas production wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920610606.5U CN210068047U (en) | 2019-04-29 | 2019-04-29 | Pure metal sealing gas production wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068047U true CN210068047U (en) | 2020-02-14 |
Family
ID=69449763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920610606.5U Active CN210068047U (en) | 2019-04-29 | 2019-04-29 | Pure metal sealing gas production wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068047U (en) |
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2019
- 2019-04-29 CN CN201920610606.5U patent/CN210068047U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230427 Address after: No. 16, Xihenggang Street, Yangchenghu Town, Xiangcheng District, Suzhou City, Jiangsu Province, 215138 Patentee after: Suzhou Dawson Drilling and Production Equipment Co.,Ltd. Address before: 215137 Taiping Town, Suzhou, Jiangsu, Xiangcheng District Patentee before: SUZHOU DOUSON DRILLING & PRODUCTION EQUIPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right |