CN203891837U - Large-diameter high-pressure oil and gas recovery wellhead device - Google Patents
Large-diameter high-pressure oil and gas recovery wellhead device Download PDFInfo
- Publication number
- CN203891837U CN203891837U CN201420258467.1U CN201420258467U CN203891837U CN 203891837 U CN203891837 U CN 203891837U CN 201420258467 U CN201420258467 U CN 201420258467U CN 203891837 U CN203891837 U CN 203891837U
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- main valve
- tubing head
- valve
- latus rectum
- gas
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Abstract
The utility model discloses a large-diameter high-pressure oil and gas recovery wellhead device comprising a large-diameter main valve. An oil-gas tree is upwardly connected to the large-diameter main valve. A tubing head cross is connected to the bottom of the large-diameter main valve. A tubing hanger is mounted in an inner cavity of the tubing head cross. The large-diameter main valve is made by serially arranging a large-diameter main valve upper valve and a large-diameter main valve lower valve in the vertical direction. A main seal and an auxiliary seal are disposed on contact faces of the tubing hanger and the tubing head cross; the main seal is a metal seal; the auxiliary seal is an S-shaped rubber seal. Eight jackscrews are centripetally disposed in a radial hole arranged in an upper flange of a body of the tubing head cross. A pressure test check valve is additionally disposed at a pressure test through hole arranged in the upper flange of the body of the tubing head cross. By the use of the large-diameter high-pressure oil and gas recovery wellhead device, the problems that the existing oil (gas) recovery wellhead device generates great throttling effect during large-displacement injection construction, great scouring and vibration is caused to a wellhead and a pumping manifold and the oil (gas) recovery wellhead needs to be replaced after fracturing construction are solved.
Description
Technical field
The utility model belongs to oil drilling and extracting equipment technical field, relates to a kind of large path high-pressure oil and gas extraction wellhead device.
Background technology
General structure is that a set of complete wellhead assembly and christmas tree are mainly made up of casing head, tubing head and christmas tree three parts at present.When drilling well, preventer is arranged on to casing head top and forms wellhead for drilling; When completion, christmas tree is arranged on to tubing head top, forms (gas) wellhead assembly that recovers the oil.Wherein, the Main Function of tubing head is to hang oil pipe, the annular space between sealing oil pipe and sleeve pipe; The Main Function of christmas tree is switch, control and guidance gas stream and sealing oil pipe.Whole device need meet the formation testing completion jobs that requires special skills such as drilling well, well cementation and testing pressure down hole, well-flushing, fracture acidizing.
Usually can produce larger throttle effect at conventional well head in the injection of large discharge capacity, wellhead assembly and infusion manifold are caused and wash away more greatly and shake.Therefore, General Requirements adopts large path high-pressure wellhead assembly.
Utility model content
The purpose of this utility model is to provide a kind of large path high-pressure oil and gas extraction wellhead device; solve conventional well head of the prior art and usually can produce larger throttle effect in the injection of large discharge capacity; easily wellhead assembly and infusion manifold are caused and wash away more greatly and shake, the problem of the normal work of impact.
The technical scheme that the utility model adopts is that a kind of large path high-pressure oil and gas extraction wellhead device, comprises large latus rectum main valve, large latus rectum main valve is upwards connected with christmas tree, large latus rectum main valve is connected with tubing head four-way downwards, and tubing head four-way inner chamber is provided with boll-weevil hanger
Large latus rectum main valve adopts vertically tandem setting of valve under valve and large latus rectum main valve on large latus rectum main valve.
Large path high-pressure oil and gas extraction wellhead device of the present utility model, its feature is also:
The contact surface of boll-weevil hanger and tubing head four-way is provided with primary seal and secondary sealing, primary seal is metal sealing, pair is sealed into the rubber seal of S type, centripetally in tubing head four-way main body upper flange radial hole be provided with eight jackscrews, be provided with in addition pressure testing ball-and-seat in tubing head four-way main body upper flange pressure testing through hole.
The beneficial effects of the utility model are, the upper and lower main valve of the main latus rectum of this wellhead assembly adopts monolithic, in meeting oil (gas) well large discharge capacity, large liquid measure, the operation of high pressure pressing crack construction, and after completion, do not need to dismantle monolithic main valve just can be as oil recovery (gas) operation.Solve existing oil recovery (gas) wellhead assembly and injected and can produce larger throttle effect in discharge capacity, well head and infusion manifold are caused and wash away greatly and shake, after pressing crack construction completes, needed to change the problem of oil recovery (gas) wellhead assembly.Reduce overall height simultaneously, increased safety factor, two large latus rectum main valves adopt monolithic construction, when increasing valve arrangement intensity, significantly increase and participated in the safety factor of pressing crack construction, and reduced the height of whole oil recovery (gas) wellhead assembly.During pressing crack construction, the large latus rectum main valve of monolithic, in full open position, leaks if there is all the other main valves, can close a wherein main valve and realize closing well, then changes wellhead assembly; Boll-weevil hanger adopts metal sealing and S type rubber ring combination sealing form, relies on oil pipe deadweight and jackscrew extruding acting in conjunction, the conical surface of metal o-ring and this body cone of tubing head is fitted tightly, thereby excite sealing; At tubing head upper flange place design pressure testing through hole, solve because adopting the main latus rectum of 180mm cannot be to a difficult problem for the major and minor sealing pressure testing of boll-weevil hanger.
Brief description of the drawings
Fig. 1 is the structural representation of the large path high-pressure oil and gas extraction wellhead device of the utility model;
Fig. 2 is the side-looking structural representation of the large latus rectum main valve 2 in the utility model device;
Fig. 3 is the boll-weevil hanger mounting structure schematic diagram in the utility model device.
In figure, 1. christmas tree, 2. large latus rectum main valve, 3. tubing head four-way, 4. boll-weevil hanger, 5. jackscrew, 6. pressure testing ball-and-seat, 7. valve on large latus rectum main valve, 8. valve under large latus rectum main valve, 9. monolithic four-way, 10. primary seal, 11. secondary sealings.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
With reference to Fig. 1, Fig. 2, the structure of the utility model device is, comprises large latus rectum main valve 2, and large latus rectum main valve 2 is upwards connected with christmas tree 1, and large latus rectum main valve 2 is connected with tubing head four-way 3 downwards, and tubing head four-way 3 inner chambers are provided with boll-weevil hanger 4;
The cover plate flange of christmas tree 1 and little four-way one are manufactured and are become monolithic four-way 9, further reduce wellhead assembly height;
The monolithic construction that large latus rectum main valve 2 adopts two valves to be integrated, go up studding lower flange structure, vertically tandem setting of valve 8 under valve 7 and large latus rectum main valve on large latus rectum main valve, latus rectum is 180mm, operating pressure is 105MPa, two valves are in use in full-gear, and wherein a valve can be used as service valve, has increased safety factor.The large latus rectum main valve 2 of this monolithic, applicable to pressing crack construction, has also reduced oil recovery (gas) wellhead integral height simultaneously;
With reference to Fig. 3, boll-weevil hanger 4 is provided with primary seal 10 and secondary sealing 11 with the contact surface of tubing head four-way 3, primary seal 10 is metal sealing, secondary sealing 11 is the rubber seal of S type, centripetally in tubing head four-way 3 main body upper flange radial holes be provided with eight jackscrews 5, eight jackscrews, 5 extruding that utilize the oil pipe deadweight of hanging and be distributed in tubing head four-way 3 main body upper flange excite boll-weevil hanger metal sealing to work; Be provided with in addition pressure testing ball-and-seat 6 in tubing head four-way 3 main body upper flange pressure testing through holes, solve because adopting the 180mm main latus rectum cannot be to a difficult problem for the major and minor sealing pressure testing of boll-weevil hanger; Meanwhile, in order further to increase safety factor, tubing head four-way 3 lower flange place bobbin seal forms are set to A type metal sealing and add P type rubber sealing structure, make sealing more reliable.
The installation process of the utility model device is:
First, tubing head four-way 3 and large latus rectum main valve 2 are installed after oil (gas) well completion, are replaced the gas testings such as slurry, pipe cleaning, latus rectum to prepare, then formation testing (gas) well head is installed and is carried out segmentation sand fracturing operation;
Then, after the gas testing of oil (gas) well completes, be lowered to boll-weevil hanger 4 and sit and hang position to tubing head four-way 3 inner chambers, tighten the jackscrew 5 at tubing head four-way 3 upper flange places, utilize jackscrew 5 extruding and oil pipe deadweight to excite metal sealing to work; Utilize the major and minor sealing pressure testing of tubing head upper flange place's pressure testing ball-and-seat 6 to boll-weevil hanger 4;
Finally, complete after above-mentioned steps, close a wherein valve of large latus rectum main valve 2, after dismounting formation testing (gas) well head installation christmas tree, open main valve and connect production procedure and produce.
Claims (2)
1. a large path high-pressure oil and gas extraction wellhead device, it is characterized in that: comprise large latus rectum main valve (2), large latus rectum main valve (2) is upwards connected with christmas tree (1), large latus rectum main valve (2) is connected with tubing head four-way (3) downwards, tubing head four-way (3) inner chamber is provided with boll-weevil hanger (4)
Large latus rectum main valve (2) adopts on large latus rectum main valve valve (7) and vertically tandem setting of valve (8) under latus rectum main valve greatly.
2. large path high-pressure oil and gas extraction wellhead device according to claim 1, it is characterized in that: described boll-weevil hanger (4) is provided with primary seal (10) and secondary sealing (11) with the contact surface of tubing head four-way (3), primary seal (10) is metal sealing, secondary sealing (11) is the rubber seal of S type, in tubing head four-way (3) main body upper flange radial hole, centripetal eight jackscrews (5) that are provided with, are provided with pressure testing ball-and-seat (6) in addition in tubing head four-way (3) main body upper flange pressure testing through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258467.1U CN203891837U (en) | 2014-05-20 | 2014-05-20 | Large-diameter high-pressure oil and gas recovery wellhead device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420258467.1U CN203891837U (en) | 2014-05-20 | 2014-05-20 | Large-diameter high-pressure oil and gas recovery wellhead device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203891837U true CN203891837U (en) | 2014-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420258467.1U Expired - Fee Related CN203891837U (en) | 2014-05-20 | 2014-05-20 | Large-diameter high-pressure oil and gas recovery wellhead device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203891837U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790907A (en) * | 2015-03-16 | 2015-07-22 | 宝鸡石油机械有限责任公司 | Tubing head blocking isolating valve for fracture wellhead device |
| CN109252848A (en) * | 2018-11-29 | 2019-01-22 | 美钻深海能源科技研发（上海）有限公司 | It is a kind of to produce and the dual-purpose split type upper flange of pressure break |
| CN109441391A (en) * | 2018-11-21 | 2019-03-08 | 中国石油集团渤海石油装备制造有限公司 | A kind of pressure break gas wellhead equipment |
| CN111894514A (en) * | 2020-08-31 | 2020-11-06 | 江苏宏泰石化机械有限公司 | Compact ultrahigh pressure oil (gas) production wellhead device |
-
2014
- 2014-05-20 CN CN201420258467.1U patent/CN203891837U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790907A (en) * | 2015-03-16 | 2015-07-22 | 宝鸡石油机械有限责任公司 | Tubing head blocking isolating valve for fracture wellhead device |
| CN109441391A (en) * | 2018-11-21 | 2019-03-08 | 中国石油集团渤海石油装备制造有限公司 | A kind of pressure break gas wellhead equipment |
| CN109252848A (en) * | 2018-11-29 | 2019-01-22 | 美钻深海能源科技研发（上海）有限公司 | It is a kind of to produce and the dual-purpose split type upper flange of pressure break |
| CN111894514A (en) * | 2020-08-31 | 2020-11-06 | 江苏宏泰石化机械有限公司 | Compact ultrahigh pressure oil (gas) production wellhead device |
| CN111894514B (en) * | 2020-08-31 | 2024-04-02 | 江苏宏泰石化机械有限公司 | Compact ultrahigh pressure oil extraction wellhead 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: 20141022 Termination date: 20160520 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |