CN203296738U - Wellhead pressure test plug - Google Patents
Wellhead pressure test plug Download PDFInfo
- Publication number
- CN203296738U CN203296738U CN2013202777985U CN201320277798U CN203296738U CN 203296738 U CN203296738 U CN 203296738U CN 2013202777985 U CN2013202777985 U CN 2013202777985U CN 201320277798 U CN201320277798 U CN 201320277798U CN 203296738 U CN203296738 U CN 203296738U
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- head
- pressure test
- pressure
- well head
- testing pressure
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Abstract
The utility model relates to technical fields of wellhead pressure test devices, in particular to a wellhead pressure test plug. The wellhead pressure test plug is used for being arranged into an oil pipe head four-way joint or a casing pipe head four-way joint through a drilling rod from a drilling platform and hung onto a step in the oil pipe head four-way joint or a step in the casing pipe head four-way joint. The wellhead pressure test plug comprises an integrated wellhead pressure test plug body with a hollow cavity, a flowing groove is formed in the upper portion of the wellhead pressure test plug body, and the flowing groove is used for forming a fluid channel when hydraulic pressure is exerted from the outside of the drilling rod; a sealing device is arranged on the lower portion of the wellhead pressure test plug body, and the sealing device is used for forming seal with a cavity of the oil pipe head four-way joint or a cavity of the casing pipe head four-way joint under the effect of hydraulic pressure when the hydraulic pressure is exerted into the hollow cavity from the inside of the drilling rod. The wellhead pressure test plug has the necessary advantages of being convenient to disassemble and assemble, easy to operate, reasonable in structure and reliable in performance, solves the problem that pressure test blind areas exist in a field petroleum wellhead device, and achieves pressure test without the blind areas.
Description
Technical field
The utility model relates to a kind of pressure testing device at well mouth that a kind of petroleum machinery is used, and is specifically related to a kind of Integral type well-mouth pressure test plug that contains sealing device.
Background technology
A kind of testing pressure of well head plug is sat and is hung in tubing head four-way (or casing head spool), by the top and the bottom threaded connection drill stem, preventer and drilling rod sealing, a kind of testing pressure of well head plug lower seal and each gasket ring form an airtight annular space, press and can detect annular space sealing performance by the oral examination of drilling spool side, this process is most important to ensureing the wellhead assembly safe handling.
At present, the most frequently used pressure test plug seal member is the step place that is positioned at tubing head four-way (or casing head spool) both at home and abroad, and is namely consistent with the hanger sealing station.The shortcoming of this structure is: tubing head four-way or casing head spool wing passage can't pressure testings, and sealing performance that just can not detection side channel valve system, cause a large potential safety hazard.The another kind of pressure test plug of also commonly using both at home and abroad, belong to split-type structural, and sealing device adopts the O RunddichtringO, and the shortcoming of this structure is: leak point is many, bayonet lock is easily cut off and cause that instrument comes off, the testing pressure of well head plug is very easily cut off the O RunddichtringO and caused seal failure in seat extension process.
The utility model content
The purpose of this utility model is to provide a kind of testing pressure of well head plug that contains sealing device in order to overcome above-mentioned shortcoming of the prior art.
The utility model is to realize like this, a kind of testing pressure of well head dress plug, be used for being lowered in tubing head four-way or casing head spool with drilling rod from rig floor, and sit on the step that hangs in described tubing head four-way or casing head spool, comprise the integral type testing pressure of well head plug body with hollow cavity, the top of described testing pressure of well head plug body is provided with the chute of crossing that forms fluid passage when from described drilling rod outside, applying hydraulic pressure; The bottom of described a kind of testing pressure of well head plug body is provided with and forms the sealing device of sealing when applying hydraulic pressure in from described drilling rod inside to described hollow cavity with the inner chamber of described tubing head four-way or casing head spool under hydraulic action.
Described sealing device comprises that twice excite by hydraulic pressure and with the inner chamber of described tubing head four-way or casing head spool, forms the axle P RunddichtringO of sealing.
Described twice axle is with being provided with spacer ring between the P RunddichtringO.
The bottom of described testing pressure of well head plug body also is provided with for supporting and stopping that described axle comes off with P RunddichtringO and described spacer ring and cap.
The top of described testing pressure of well head plug body is provided with the jackscrew draw-in groove that contacts on the top of the jackscrew assembly of exert pressure when test floating or vibrations for the described testing pressure of well head plug of the restriction body with being arranged on described tubing head four-way or casing head spool.
the utility model forms the sealing device of sealing when applying hydraulic pressure in from described drilling rod inside to described hollow cavity with the inner chamber of described tubing head four-way or casing head spool under hydraulic action because the bottom at described integral type testing pressure of well head plug body is provided with, existing pressure test plug pressure testing sealing position design is unreasonable or leakage point is many thereby solved, bayonet lock is easily cut off, the technical problem that the O RunddichtringO is easily cut off, fundamentally solved the problem that there is the pressure testing blind area in on-the-spot oil well head device, realized the non-blind area pressure testing, not only rational in infrastructure, dependable performance, and has an easy accessibility, the characteristics such as simple to operate.
Description of drawings
Figure 1 shows that the sectional structure schematic diagram that contains a kind of testing pressure of well head plug of sealing device monolithic that the utility model provides.
The specific embodiment
, in order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is further elaborated.
, referring to Fig. 1, the figure shows a kind of structure that contains sealing device Integral type well-mouth pressure test plug that the utility model provides.For convenience of explanation, only show the relevant part of the utility model.
A kind of testing pressure of well head dress plug, be used for being lowered in tubing head four-way 5 or casing head spool with drilling rod from rig floor, and sit on the step that hangs in described tubing head four-way 5 or casing head spool, comprise the integral type testing pressure of well head plug body 4 with hollow cavity, the top of described testing pressure of well head plug body 4 be provided with form fluid passage when from described drilling rod outside, applying hydraulic pressure cross chute 7; The bottom of described testing pressure of well head plug body 4 is provided with and forms the sealing device of sealing when applying hydraulic pressure in from described drilling rod inside to described hollow cavity with the inner chamber of described tubing head four-way 5 or casing head spool under hydraulic action.
Described sealing device comprise that twice excite by hydraulic pressure and the axle that forms sealing with the inner chamber of described tubing head four-way or casing head spool with P RunddichtringO 2.
Concrete, be provided with in the hollow cavity of testing pressure of well head plug body 4 and can allow hydraulic pressure lead to the runner of described axle with P RunddichtringO 2, in order to hydraulic pressure, excite the twice axle to realize Integral type well-mouth pressure test plug body 4 and tubing head four-way 5 (or casing head spool) bore seal with P RunddichtringO 2.
Described twice axle is with being provided with spacer ring 3 between P RunddichtringO 2.
The bottom of described testing pressure of well head plug body 4 also is provided with for supporting and stopping that described axle comes off with P RunddichtringO 2 and described spacer ring 3 and cap 1.
The top of described testing pressure of well head plug body 4 is provided with that a circle caves inward is used for the jackscrew draw-in groove that contacts with the top that is arranged on the described testing pressure of well head plug of restriction body on described tubing head four-way 5 or the casing head spool jackscrew assembly 6 of floating or vibrations when exerting pressure test.
in operation, to be first that pressure test plug body and sealing device seat hang on the interior step of tubing head four-way 5 (or casing head spool), sealing device is positioned at four-way cavity side passage lower end, then by hydraulic action in the pressure test plug cavity, excite in sealing device the twice axle with the P RunddichtringO and reach maximum value, realize pressure test plug and tubing head four-way 5 (or casing head spool) effective sealing, finally by the drilling spool wing passage, apply hydraulic fluid in the drilling rod outside, while being full of this pressure test plug upper annulus volume, just can test preventer, drilling spool and tubing head four-way 5 (or casing head spool) and wing passage sealing performance thereof.The sealing of P type is removed after pressure testing finishes, and both can take out easily this pressure test plug, reclaims black box.
The utility model has solved the pressure testing of tubing head four-way (or casing head spool) wing passage, the problem of the sealing performance of detection side channel valve system, and then guaranteed the safe handling of wellhead assembly; Fundamentally solved simultaneously the technical problem that the O RunddichtringO is easily cut off.And the utility model is simple to operate, and dependable performance is practical, has good sealing effectiveness.
The above is only preferred embodiment of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (5)
1. a testing pressure of well head dress is filled in, be used for being lowered in tubing head four-way or casing head spool with drilling rod from rig floor, and sit on the step that hangs in described tubing head four-way or casing head spool, it is characterized in that, comprise the integral type testing pressure of well head plug body with hollow cavity, the top of described testing pressure of well head plug body is provided with the chute of crossing that forms fluid passage when from described drilling rod outside, applying hydraulic pressure; The bottom of described testing pressure of well head plug body is provided with and forms the sealing device of sealing when applying hydraulic pressure in from described drilling rod inside to described hollow cavity with the inner chamber of described tubing head four-way or casing head spool under hydraulic action.
2. testing pressure of well head dress plug according to claim 1, is characterized in that, described sealing device comprises that twice excite by hydraulic pressure and with the inner chamber of described tubing head four-way or casing head spool, forms the axle P RunddichtringO of sealing.
3. the testing pressure of well head dress is filled according to claim 2, it is characterized in that, described twice axle is with being provided with spacer ring between the P RunddichtringO.
4. the testing pressure of well head dress is filled according to claim 3, it is characterized in that, the bottom of described testing pressure of well head plug body also is provided with for supporting and stopping that described axle comes off with P RunddichtringO and described spacer ring and cap.
5. according to claim 1-4 described testing pressure of well head dresses of any one are filled in, it is characterized in that, the top of described testing pressure of well head plug body is provided with the jackscrew draw-in groove that contacts on the top of the jackscrew assembly of exert pressure when test floating or vibrations for the described testing pressure of well head plug of the restriction body with being arranged on described tubing head four-way or casing head spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202777985U CN203296738U (en) | 2013-05-21 | 2013-05-21 | Wellhead pressure test plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202777985U CN203296738U (en) | 2013-05-21 | 2013-05-21 | Wellhead pressure test plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203296738U true CN203296738U (en) | 2013-11-20 |
Family
ID=49572756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202777985U Expired - Fee Related CN203296738U (en) | 2013-05-21 | 2013-05-21 | Wellhead pressure test plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203296738U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924964A (en) * | 2014-05-07 | 2014-07-16 | 西南石油大学 | Christmas tree number-one main valve pressure testing plug |
| CN107701142A (en) * | 2017-10-21 | 2018-02-16 | 中国石油集团渤海钻探工程有限公司 | A kind of testing pressure of well head rotary sealing type casing blanking plug |
| CN109000914A (en) * | 2018-07-11 | 2018-12-14 | 中海石油(中国)有限公司湛江分公司 | A kind of experimental rig and method of ring packing assembly seal body |
| CN110630206A (en) * | 2019-09-28 | 2019-12-31 | 中海油能源发展股份有限公司 | Convenient to use's multi-functional pressure test stopper |
| CN113758687A (en) * | 2020-05-19 | 2021-12-07 | 中国石油天然气股份有限公司 | Pump pipe pressure testing device and method of screw pump |
-
2013
- 2013-05-21 CN CN2013202777985U patent/CN203296738U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924964A (en) * | 2014-05-07 | 2014-07-16 | 西南石油大学 | Christmas tree number-one main valve pressure testing plug |
| CN103924964B (en) * | 2014-05-07 | 2017-07-14 | 西南石油大学 | A kind of No. 1 main valve pressure test plug of production tree |
| CN107701142A (en) * | 2017-10-21 | 2018-02-16 | 中国石油集团渤海钻探工程有限公司 | A kind of testing pressure of well head rotary sealing type casing blanking plug |
| CN109000914A (en) * | 2018-07-11 | 2018-12-14 | 中海石油(中国)有限公司湛江分公司 | A kind of experimental rig and method of ring packing assembly seal body |
| CN109000914B (en) * | 2018-07-11 | 2024-02-02 | 中海石油(中国)有限公司湛江分公司 | Test device and method for sealing body of annular sealing assembly |
| CN110630206A (en) * | 2019-09-28 | 2019-12-31 | 中海油能源发展股份有限公司 | Convenient to use's multi-functional pressure test stopper |
| CN113758687A (en) * | 2020-05-19 | 2021-12-07 | 中国石油天然气股份有限公司 | Pump pipe pressure testing device and method of screw pump |
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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: 20131120 Termination date: 20150521 |
|
| EXPY | Termination of patent right or utility model |