CN201074494Y - Blanking plug for testing pressure of well head - Google Patents
Blanking plug for testing pressure of well head Download PDFInfo
- Publication number
- CN201074494Y CN201074494Y CNU2007201493340U CN200720149334U CN201074494Y CN 201074494 Y CN201074494 Y CN 201074494Y CN U2007201493340 U CNU2007201493340 U CN U2007201493340U CN 200720149334 U CN200720149334 U CN 200720149334U CN 201074494 Y CN201074494 Y CN 201074494Y
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- CN
- China
- Prior art keywords
- main body
- pressure testing
- well head
- blanking plug
- leather cup
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a well head pressure testing blanking plug. The utility model provides a well head pressure testing blanking plug in order to overcome the shortcomings that the prior well head pressure testing device has complex operation process, large labor strength and long operation time, wherein a main body (5) is a solid body, a connecting screw thread (8) is connected on the upper end portion of the body, a conic surface (7) whose upper end is large and lower end is small is arranged on the upper portion of the main body (5), a packing cup (4) is mounted on a packing cup carrier (6) which is mounted on the lower portion of the main body (5), a base cup (2) is fixedly connected with the main body (5), the packing cup carrier (6) is fixed on the main body (5), and a sealing ring (3) is mounted between the inner circumference of the packing cup carrier (6) and the outer circumference of the main body (5). The utility model has the advantages of simple structure, convenient flinging and taking, quick speed and good effect of pressure testing construction, which saves operation time and operation cost.
Description
Affiliated technical field
The utility model relates to the pressure testing device at well mouth that a kind of oil-gas mining operation is used, and especially relates to a kind of well head pressure testing blanking plug.
Background technology
The oil and gas development operation must be carried out pressure testing to well head and wellhead assembly, to guarantee to reach the well control designing requirement.Packer is adopted in conventional well head pressure testing operation, promptly at first in sleeve pipe, be lowered to the tubing string of band packer, test the envelope operation after the packer set, for example: on August 3rd, 2005, disclosed notification number was the Chinese utility model patent of CN2714793Y---a well head pressure tester, be that 3 leather cups are installed on central tube, the upper and lower of central tube connects to form the pressure testing tubing string with oil pipe respectively, to be lowered in the sleeve pipe for the pressure testing tubing string again, leather cup external diameter and casing inner diameter are interference fit, carry out bulge test then.On January 17th, 2007, disclosed notification number was the Chinese utility model patent of CN2858933Y---well head pressure testing wiper plug, in the seal groove on the excircle of its wiper plug sealing ring is installed, sealing ring and casing inner diameter are interference fit, when carrying out well head pressure testing operation, the pipe nipple that the wiper plug upper end connects is connected with boll-weevil hanger, the lower end is connected with oil pipe, is lowered to then in the sleeve pipe, carries out the pressure testing operation.The bottom of the pressure testing device of above-mentioned technology all needs to be connected with oil pipe, its complicated operating process, and labour intensity is big, and the activity duration is long.
Summary of the invention
In order to overcome the complicated operating process that existing pressure testing device at well mouth exists, labour intensity is big, the deficiency that the activity duration is long, and the utility model provides a kind of well head pressure testing blanking plug, and this well head pressure testing plug structure is simple, is convenient to operation.
The technical scheme that its technical problem that solves the utility model adopts is: main body is a solid, and there is connecting thread the upper end, and up big and down small taper seat is arranged at main body top; Leather cup is installed on the leather cup carriage, and leather cup carriage peace is changeed the bottom in main body; End bowl is fixedlyed connected with main body, and the leather cup carriage is fixed on the main body; Between the inner periphery of leather cup carriage and the excircle of main body sealing ring is installed.The interior step place of end bowl radially is equipped with position-limitting pin.Taper seat on the main body is identical with the undergauge conical surface angle of end flange.
The beneficial effects of the utility model are, and are simple in structure, throw and get conveniently, and the pressure testing speed of application is fast, effective, save the activity duration, save operating cost.
Description of drawings
Fig. 1 is the utility model well head pressure testing blanking plug schematic diagram.
Fig. 2 is that the utility model well head pressure testing blanking plug partly seals flashboard pressure testing operation schematic diagram.
Fig. 3 is the utility model well head pressure testing blanking plug blind rams pressure testing operation schematic diagram.
Among the figure: 1. position-limitting pin, 2. end bowl, 3. sealing ring, 4. leather cup, 5. main body, 6. leather cup carriage, 7. taper seat, 8. connecting thread, 11. blind rams, 12. half envelope flashboards, 13. deliver pipe nipples, 14. production trees, 15. end flanges, 16. blanking plugs, 17. casing nipples.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
With reference to accompanying drawing 1.The utility model well head pressure testing blanking plug, main body 5 is a solid; There is connecting thread 8 main body 5 upper ends, and up big and down small taper seat 7 is arranged at main body top; Taper seat 7 is identical, measure-alike with the undergauge conical surface angle of end flange 15.Leather cup 4 is installed on the leather cup carriage 6, and leather cup carriage 6 is installed in the bottom of main body 5; End bowl 2 is fixedlyed connected with main body 5, and leather cup carriage 6 is fixed on the main body 5; Sealing ring 3 is installed between the excircle of the inner periphery of leather cup carriage 6 and main body 5; Leather cup 4 excircles and sealing surfaces are interference fit.The interior step place of end bowl 2 radially is equipped with position-limitting pin 1, is used to prevent that the end bowl 2 from rotating.
With reference to accompanying drawing 2, accompanying drawing 3, the taper seat 7 of blanking plug 16 main bodys 5 hangs on the undergauge conical surface of flange 15 at the bottom of the production tree, and leather cup 4 is positioned at the casing nipple 17 of production tree 14.Produce sealing just between the elastic dilatation power of dependence leather cup 4 and casing nipple 17 inwalls, under the synergy of instrument self seal circle 3, the sealed lower portion sleeve pipe.
The concrete operations step that employing the utility model well head pressure testing blanking plug carries out the pressure testing operation is as follows:
At first, the assembling wellhead equipment comprises the pressure testing pipeline.
The connecting thread 8 that the main body 5 of blanking plug 16 is passed through the upper end is connected with delivery pipe nipple 13.
Partly seal flashboard 12 pressure testings (accompanying drawing 2): close half envelope flashboard 12, play pump and boost, pump pressure rises to design pressure; Termination of pumping; It is qualified that the 15min that builds the pressure does not have pressure drop.
After partly sealing flashboard 12 pressure testings end, bleed off cavity pressure, open preventer and partly seal flashboard 12.
Take out and deliver pipe nipple 13.
Pressure testing bleeds off cavity pressure after finishing, and opens preventer blind rams 11.
At last, following delivery pipe nipple 13 is just changeing make-up, takes out blanking plug 16, and pressure testing finishes.
Claims (3)
1. a well head pressure testing blanking plug comprises leather cup, it is characterized in that: main body (5) is a solid, and there is connecting thread (8) upper end, and up big and down small taper seat (7) is arranged at main body (5) top; Leather cup (4) is installed on the leather cup carriage (6), and leather cup carriage (6) is installed in the bottom of main body (5); End bowl (2) is fixedlyed connected with main body (5), and leather cup carriage (6) is fixed on the main body (5); Sealing ring (3) is installed between the excircle of the inner periphery of leather cup carriage (6) and main body (5).
2. well head pressure testing blanking plug according to claim 1 is characterized in that: the interior step place of bowl of the described end (2) radially is equipped with position-limitting pin (1).
3. well head pressure testing blanking plug according to claim 2 is characterized in that: described taper seat (7) is identical with the undergauge conical surface angle of end flange (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201493340U CN201074494Y (en) | 2007-05-29 | 2007-05-29 | Blanking plug for testing pressure of well head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201493340U CN201074494Y (en) | 2007-05-29 | 2007-05-29 | Blanking plug for testing pressure of well head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074494Y true CN201074494Y (en) | 2008-06-18 |
Family
ID=39519757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201493340U Expired - Fee Related CN201074494Y (en) | 2007-05-29 | 2007-05-29 | Blanking plug for testing pressure of well head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074494Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614248A (en) * | 2013-11-05 | 2015-05-13 | 珠海格力电器股份有限公司 | Pipeline inspection equipment |
| CN105257280A (en) * | 2015-11-05 | 2016-01-20 | 大庆鸿润源石油科技开发有限公司 | Lifting pressure testing device |
-
2007
- 2007-05-29 CN CNU2007201493340U patent/CN201074494Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614248A (en) * | 2013-11-05 | 2015-05-13 | 珠海格力电器股份有限公司 | Pipeline inspection equipment |
| CN104614248B (en) * | 2013-11-05 | 2018-02-27 | 珠海格力电器股份有限公司 | Pipe testing apparatus |
| CN105257280A (en) * | 2015-11-05 | 2016-01-20 | 大庆鸿润源石油科技开发有限公司 | Lifting pressure testing 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: 20080618 Termination date: 20150529 |
|
| EXPY | Termination of patent right or utility model |