CN203685107U - Blowout preventer for oil field test - Google Patents
Blowout preventer for oil field test Download PDFInfo
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- CN203685107U CN203685107U CN201420064677.7U CN201420064677U CN203685107U CN 203685107 U CN203685107 U CN 203685107U CN 201420064677 U CN201420064677 U CN 201420064677U CN 203685107 U CN203685107 U CN 203685107U
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Abstract
The utility model discloses a blowout preventer for an oil field test. The blowout preventer comprises a base and a pressing cap, the upper end of the base is connected with an upper connector in a threaded sealing mode, the lower end of the base is connected with a plug in a threaded sealing mode, a rotating disk is movably connected in the upper connector through threads, a fixed disk is arranged on the upper portion of the rotating disk, a sealing layer is arranged between the rotating disk and the fixed disk, a pressure relief hole is formed in the fixed disk, the pressure relief hole is connected with a pressure relief pipeline, a pressure regulating hole is formed in the rotating disk, one half of the side wall of the pressure regulating hole is vertically arranged, the other half of the side wall of the pressure regulating hole is obliquely arranged, and a torsional spring is arranged between the rotating disk and the upper connector. Protecting sleeves are movably arranged in the upper connector and the plug respectively, smooth faces are arranged on the outer sides of the protecting sleeves, and threads are arranged on the inner sides of the protecting sleeves. According to the blowout preventer, defects in the prior art can be overcome, self-adaption regulation on well pressure is achieved, the connecting mode of the protecting sleeves and a cable is changed, and the service life of the protecting sleeves is prolonged.
Description
Technical field
The utility model relates to detection technique field, oil field, especially a kind of oil field testing blowout preventer.
Background technology
When water injection well in oil fields zonal testing, in order to ensure the normal lifting of tester and prevent that sewage from leaking, need to use blowout-preventing choke plug.Chinese utility model patent CN202596655U discloses a kind of injection well testing high-efficiency blowout prevention plug, reduces cable wearing and tearing, stops plug thorn water phenomenon, guarantees that instrument transfers smooth and easy.But the blowout-preventing choke plug of this structure cannot carry out steady release in the time that well is pressed abnormal increase, too high well pressure can cause damage to tester and blowout-preventing choke plug itself.In addition, copper sheath and cable rub for a long time, and the rate of wear is fast, need to often carry out dismounting and change.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of oil field testing blowout preventer, can improve the deficiencies in the prior art, has realized the self adaptation that well is pressed and has regulated, and changed the connected mode of sheath and cable, has extended the application life of sheath.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of oil field testing blowout preventer, comprise base and pressure cap, base upper end thread seal is connected with top connection, the lower end thread seal of base is connected with plug, described top connection internal thread is connected with rotating disc, rotating disc top is provided with fixed disk, between rotating disc and fixed disk, be provided with sealant, on fixed disk, be provided with relief hole, relief hole is connected with pressure relief pipe, on rotating disc, be provided with regulator hole, the sidewall half of regulator hole is vertically to arrange, second half is for being obliquely installed, the diameter of relief hole is greater than the diameter of regulator hole, the center of circle of relief hole does not overlap with the center of circle of fixed disk, the center of circle of regulator hole does not overlap with rotating disc, the relief hole center of circle equates to the distance in the rotating disc center of circle with the regulator hole center of circle to the distance in the fixed disk center of circle, between rotating disc and top connection, be provided with torsion spring, in described top connection and plug, be movably set with respectively sheath, the outside of sheath is shiny surface, and the inner side of sheath is provided with screw thread.
As preferably, on described pressure relief pipe, be provided with pressure meter.
As preferably, the sidewall sections that described regulator hole is obliquely installed and the angle of vertical direction are 45 °～80 °.
The beneficial effect that adopts technique scheme to bring is: regulator hole of the present utility model is under the pressure-acting of borehole fluid, the pressure of the horizontal direction that upright side walls is subject to is greater than the horizontal direction pressure that sloped sidewall is subject to, rotating disc produces moment of torsion under the effect of pressure differential, and then generation swing offset, in the time that the moment of torsion of driving torque and torsion spring generation equates, rotating disc stops operating, in stable state, according to the difference of the rotating disc anglec of rotation, regulator hole is also different from the coincidence ratio of relief hole, this just can realize according to different wells and press the pressure release that adopts different flow.Sheath contacts by screw thread with cable, and in the time that cable moves up and down, the lines of cable surface contacts with screw thread, the rotation of drive sheath, thereby existing sliding friction is become to rolling friction, greatly reduced frictional force, extended 4～6 times the application life of sheath.Pressure meter is used for monitor well and presses, when occurring while extremely increasing, can being shown in time attendant.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a specific embodiment of the utility model.
In figure: 1, base; 2, pressure cap; 3, top connection; 4, plug; 5, rotating disc; 6, fixed disk; 7, relief hole; 8, pressure relief pipe; 9, regulator hole; 10, sheath; 11, screw thread; 12, torsion spring; 13, pressure meter; 14, spoiler.
The specific embodiment
With reference to Fig. 1, specific embodiment of the utility model comprises base 1 and pressure cap 2, base 1 upper end thread seal is connected with top connection 3, the lower end thread seal of base 1 is connected with plug 4, described top connection 3 internal threads are connected with rotating disc 5, rotating disc 5 tops are provided with fixed disk 6, between rotating disc 5 and fixed disk 6, be provided with sealant 7, on fixed disk 6, be provided with relief hole 7, relief hole 7 is connected with pressure relief pipe 8, on rotating disc 5, be provided with regulator hole 9, the sidewall half of regulator hole 9 is vertically to arrange, second half is for being obliquely installed, the diameter of relief hole 7 is greater than the diameter of regulator hole 9, the center of circle of relief hole 7 does not overlap with the center of circle of fixed disk 6, the center of circle of regulator hole 9 does not overlap with rotating disc 5, relief hole 7 centers of circle equate to the distance in rotating disc 5 centers of circle with regulator hole 9 centers of circle to the distance in fixed disk 6 centers of circle, for 4/5 of fixed disk 6 and rotating disc 7 radiuses, between rotating disc 5 and top connection 3, be provided with torsion spring 12, at described top connection 3 and the interior sheath 10 that is movably set with respectively of plug 4, the outside of sheath 10 is shiny surface, and the inner side of sheath 10 is provided with screw thread 11.
It should be noted that on described pressure relief pipe 8 and be provided with pressure meter 13.
In addition the sidewall sections that, described regulator hole 9 is obliquely installed and the angle of vertical direction are 75 °.
Wherein, be provided with spoiler 14 in pressure relief pipe 8, spoiler 14 can stir flow-disturbing to the liquid flowing out, and reduces the possibility that pressure relief pipe 8 stops up.
Operating principle of the present utility model is: regulator hole 9 of the present utility model is under the pressure-acting of borehole fluid, the pressure of the horizontal direction that upright side walls is subject to is greater than the horizontal direction pressure that sloped sidewall is subject to, rotating disc 5 produces moment of torsion under the effect of pressure differential, and then generation swing offset, when the moment of torsion producing when driving torque and torsion spring 12 equates, rotating disc 5 stops operating, in stable state, according to the difference of rotating disc 5 anglecs of rotation, regulator hole 9 is also different from the coincidence ratio of relief hole 7, this just can realize according to different wells and press the pressure release that adopts different flow.Sheath 10 contacts by screw thread with cable, and in the time that cable moves up and down, the lines of cable surface contacts with screw thread 11, drive sheath 10 to rotate, thereby existing sliding friction is become to rolling friction, greatly reduced frictional force, extended 4～6 times the application life of sheath 10.Pressure meter 13 is used for monitor well and presses, when occurring while extremely increasing, can being shown in time attendant.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. an oil field testing blowout preventer, comprise base (1) and pressure cap (2), base (1) upper end thread seal is connected with top connection (3), the lower end thread seal of base (1) is connected with plug (4), it is characterized in that: described top connection (3) internal thread is connected with rotating disc (5), rotating disc (5) top is provided with fixed disk (6), between rotating disc (5) and fixed disk (6), be provided with sealant (7), on fixed disk (6), be provided with relief hole (7), relief hole (7) is connected with pressure relief pipe (8), on rotating disc (5), be provided with regulator hole (9), the sidewall half of regulator hole (9) is vertically to arrange, second half is for being obliquely installed, the diameter of relief hole (7) is greater than the diameter of regulator hole (9), the center of circle of relief hole (7) does not overlap with the center of circle of fixed disk (6), the center of circle of regulator hole (9) does not overlap with rotating disc (5), relief hole (7) center of circle equates to the distance in rotating disc (5) center of circle with regulator hole (9) center of circle to the distance in fixed disk (6) center of circle, between rotating disc (5) and top connection (3), be provided with torsion spring (12), in described top connection (3) and plug (4), be movably set with respectively sheath (10), the outside of sheath (10) is shiny surface, and the inner side of sheath (10) is provided with screw thread (11).
2. oil field testing blowout preventer according to claim 1, is characterized in that: on described pressure relief pipe (8), be provided with pressure meter (13).
3. oil field testing blowout preventer according to claim 1, is characterized in that: the sidewall sections that described regulator hole (9) is obliquely installed and the angle of vertical direction are 45 °～80 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064677.7U CN203685107U (en) | 2014-02-10 | 2014-02-10 | Blowout preventer for oil field test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420064677.7U CN203685107U (en) | 2014-02-10 | 2014-02-10 | Blowout preventer for oil field test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203685107U true CN203685107U (en) | 2014-07-02 |
Family
ID=51007026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420064677.7U Expired - Fee Related CN203685107U (en) | 2014-02-10 | 2014-02-10 | Blowout preventer for oil field test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203685107U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489761A (en) * | 2018-03-20 | 2018-09-04 | 国电科学技术研究院有限公司 | Powder prevents outer spray apparatus |
-
2014
- 2014-02-10 CN CN201420064677.7U patent/CN203685107U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489761A (en) * | 2018-03-20 | 2018-09-04 | 国电科学技术研究院有限公司 | Powder prevents outer spray apparatus |
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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: 20140702 Termination date: 20150210 |
|
| EXPY | Termination of patent right or utility model |