CN201778785U - Underground hydraulic control balanced valve - Google Patents
Underground hydraulic control balanced valve Download PDFInfo
- Publication number
- CN201778785U CN201778785U CN201020522876XU CN201020522876U CN201778785U CN 201778785 U CN201778785 U CN 201778785U CN 201020522876X U CN201020522876X U CN 201020522876XU CN 201020522876 U CN201020522876 U CN 201020522876U CN 201778785 U CN201778785 U CN 201778785U
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- Prior art keywords
- piston
- valve pocket
- upper piston
- spring
- type circle
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- Expired - Fee Related
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Abstract
The utility model relates to an underground hydraulic control balanced valve which is characterized in that a lower cover and an upper cover are connected with a body by screw threads, one end of a lower piston passes through a protecting sleeve, the other end of the lower piston passes through a valve sleeve and is connected with an upper piston by screw threads, the upper piston is movably connected with the upper cover, an upper piston spring is arranged between steps arranged on the lower edge of the upper piston and the upper edge of the valve sleeve, a piston spring is arranged between steps arranged on the lower edge of the valve sleeve and the upper edge of the protecting sleeve. In the underground hydraulic control balanced valve, when a petroleum logging instrument is used for measuring strata pressure, a spring piston and the piston are controlled by hydraulic oil to move downwards in order to close the balanced valve, a sample line and a mud line are isolated, and therefore, the strata pressure is more accurately measured; and before the instrument (probe) retracts, the spring piston and the piston move upwards under the control of the hydraulic oil to open the balanced valve, the sample line and the mud line are communicated, thereby balancing the pressure of the sample line and the mud line, the instrument is smoothly recovered, and meanwhile, the strata pressure can be monitored.
Description
Technical field
The utility model relates to a kind of hydraulic control equalizing valve, especially relates to a kind of down-hole hydraulic control equalizing valve, is mainly used in oil downhole instrument (probe) when reclaiming, and balance sample line pressure and borehole pressure belong to the matching component of oil downhole instrument.
Background technology
The oil downhole instrument is in HTHP and contains in the mud of corrosive medium, and the smooth backup of instrument is the distinctive marks of instrument operate as normal with retraction.Before the instrument retraction, sample line and mud pressure imbalance can cause the instrument and the borehole wall long time of contact, produce and are stained with card, increase silo operating time, instrument is produced infringement, and can not monitor mud pressure, have influenced the analysis to subsurface environment.
Existing hydraulic control equalizing valve can't be realized the accurate test of strata pressure, can not effectively monitor mud pressure, makes instrument (probe) retraction not smooth.
The utility model content
The technical problem that solves
For fear of the deficiencies in the prior art part, the utility model proposes a kind of down-hole hydraulic control equalizing valve, realize the accurate test of strata pressure, effectively monitor mud pressure, make instrument (probe) retraction smoothly.
Technical scheme
A kind of down-hole hydraulic control equalizing valve is characterized in that comprising lower cover 1, protective sleeve 2, piston 3, piston spring 4, valve pocket 5, upper piston spring 6, upper piston 7, loam cake 8, O type circle, back-up ring and guard ring; Lower cover 1 and loam cake 8 and body be for being threaded, and adopt the angle sealing between the body; One end of piston 3 passes protective sleeve 2, and protective sleeve 2 one ends and lower cover 1 flexibly connect, and moves down the final position, back for abutting against on the lower cover 1; The other end of piston 3 passes valve pocket 5 and is threaded with upper piston 7; Upper piston 7 flexibly connects with loam cake 8, and the final position, back that moves up is for abutting against on the loam cake 8; Between the step of the lower edge of upper piston 7 and valve pocket 5 upper edges, upper piston spring 6 is housed, between the step of the step of valve pocket 5 lower edges and protective sleeve 2 upper edges, piston spring 4 is housed; Loam cake O type circle 9 is housed in the groove on loam cake 8 circumference; In the groove that lower cover 1 and body join, lower cover O type circle 18 is housed; In the groove that upper piston 7 and body join upper piston the one O type circle 10 is housed, the position that upper piston 7 lower ends and valve pocket 5 join is provided with inside groove, and upper piston the 2nd O type circle 14 and upper piston back-up ring 15 is housed in the groove; Inside groove at the position that piston 3 and protective sleeve 2 join is equipped with piston O type circle 16 and piston protection ring 17; Inside groove in valve pocket 5 and body connecting part is equipped with valve pocket O type circle 12 and valve pocket back-up ring 13; Outer in upper piston spring 6 and the step contact site of valve pocket 5 upper edges is provided with back-up ring 11.
Beneficial effect
The utility model proposes a kind of down-hole hydraulic control equalizing valve, make oil well logging instrument when formation testing pressure, spring piston 7 and piston 3 move downward under the control of hydraulic oil equalizing valve cut out, and isolate sample line and mud line, and it is more accurate to measure strata pressure like this.Before instrument (probe) retraction, spring piston 7 and piston 3 move upward under the control of hydraulic oil equalizing valve are opened, and sample line and mud line are linked up, thus balance both pressure, instrument is reclaimed smoothly, can monitor mud pressure simultaneously.
Description of drawings
Fig. 1: structure chart of the present utility model
The 1-lower cover, 2-protective sleeve, 3-lower piston, 4-lower piston spring, 5-valve pocket, 6-upper piston spring, the 7-upper piston, 8-loam cake, 9-loam cake O type circle, 10-upper piston the one O type circle, 11-back-up ring, 12-valve pocket O type circle, 13-valve pocket back-up ring, 14-upper piston the 2nd O type circle, 15-upper piston back-up ring, 16-piston O type circle, 17--piston protection ring, 18-lower cover O type circle;
The specific embodiment
Now in conjunction with the accompanying drawings the utility model is further described:
With reference to figure 1, comprise lower cover 1, protective sleeve 2, piston 3, piston spring 4, valve pocket 5, upper piston spring 6, upper piston 7, loam cake 8, O type circle, back-up ring and guard ring in this enforcement; Lower cover 1 and loam cake 8 and body be for being threaded, and adopt the angle sealing between the body; One end of piston 3 passes protective sleeve 2, and protective sleeve 2 one ends and lower cover 1 flexibly connect, and moves down the final position, back for abutting against on the lower cover 1; The other end of piston 3 passes valve pocket 5 and is threaded with upper piston 7; Upper piston 7 flexibly connects with loam cake 8, and the final position, back that moves up is for abutting against on the loam cake 8; Between the step of the lower edge of upper piston 7 and valve pocket 5 upper edges, upper piston spring 6 is housed, between the step of the step of valve pocket 5 lower edges and protective sleeve 2 upper edges, piston spring 4 is housed; Loam cake O type circle 9 is housed in the groove on loam cake 8 circumference; In the groove that lower cover 1 and body join, lower cover O type circle 18 is housed; In the groove that upper piston 7 and body join upper piston the one O type circle 10 is housed, the position that upper piston 7 lower ends and valve pocket 5 join is provided with inside groove, and upper piston the 2nd O type circle 14 and upper piston back-up ring 15 is housed in the groove; Inside groove at the position that lower piston 3 and protective sleeve 2 join is equipped with piston O type circle 16 and piston protection ring 17; Inside groove in valve pocket 5 and body connecting part is equipped with valve pocket O type circle 12 and valve pocket back-up ring 13; Outer in upper piston spring 6 and the step contact site of valve pocket 5 upper edges is provided with back-up ring 11.
In Fig. 1, equalizing valve is in open mode.When strata pressure is measured; rely on solenoid control; when making the hydraulic fluid pressure of spring valve piston 7 epicoeles greater than the cavity of resorption hydraulic fluid pressure; spring piston 7 overcomes spring force drive valve pocket 5, protective sleeve 2 and lower piston 3 and moves downward; when protective sleeve 2 is run into equalizing valve lower cover 1; spring piston 7 and lower piston 3 continue to move downward, and close fully until equalizing valve.When instrument (probe) retraction; rely on solenoid control; make 7 times cavity pressures of spring piston greater than upper cavity pressure; spring piston 7 and lower piston 3 move upward in the acting in conjunction of oil pressure and spring force; when the step on the equalizing valve piston 3 touches the edge of protective sleeve 2; they overcome spring force together with valve pocket 5 and move upward, and open fully up to equalizing valve.
Claims (1)
1. a down-hole hydraulic control equalizing valve is characterized in that comprising lower cover (1), protective sleeve (2), piston (3), piston spring (4), valve pocket (5), upper piston spring (6), upper piston (7), loam cake (8), O type circle, back-up ring and guard ring; Lower cover (1) and loam cake (8) and body be for being threaded, and adopt the angle sealing between the body; One end of piston (3) passes protective sleeve (2), and protective sleeve (2) one ends and lower cover (1) flexibly connect, and moves down the final position, back for abutting against on the lower cover (1); The other end of piston (3) passes valve pocket (5) and is threaded with upper piston (7); Upper piston (7) flexibly connects with loam cake (8), and the final position, back that moves up is for abutting against on the loam cake (8); Between the step of the lower edge of upper piston (7) and valve pocket (5) upper edge, upper piston spring (6) is housed, between the step of the step of valve pocket (5) lower edge and protective sleeve (2) upper edge, piston spring (4) is housed; In the groove on loam cake (8) circumference loam cake O type circle (9) is housed; In the groove that lower cover (1) and body join, lower cover O type circle (18) is housed; In the groove that upper piston (7) and body join upper piston the one O type circle (10) is housed, the position that upper piston (7) lower end and valve pocket (5) join is provided with inside groove, and upper piston the 2nd O type circle (14) and upper piston back-up ring (15) are housed in the groove; Inside groove at the position that piston (3) and protective sleeve (2) join is equipped with piston O type circle (16) and piston protection ring (17); Inside groove in valve pocket (5) and body connecting part is equipped with valve pocket O type circle (12) and valve pocket back-up ring (13); Outer in the step contact site of upper piston spring (6) and valve pocket (5) upper edge is provided with back-up ring (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020522876XU CN201778785U (en) | 2010-09-09 | 2010-09-09 | Underground hydraulic control balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020522876XU CN201778785U (en) | 2010-09-09 | 2010-09-09 | Underground hydraulic control balanced valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201778785U true CN201778785U (en) | 2011-03-30 |
Family
ID=43791998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020522876XU Expired - Fee Related CN201778785U (en) | 2010-09-09 | 2010-09-09 | Underground hydraulic control balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201778785U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825211A (en) * | 2017-04-27 | 2018-11-16 | 中国石油化工股份有限公司 | Formation pressure testing balancing device and its measurement method |
| CN111236922A (en) * | 2020-02-25 | 2020-06-05 | 中国海洋石油集团有限公司 | Measurement while drilling probe device, electrical imaging while drilling method and electrical imaging while drilling system |
-
2010
- 2010-09-09 CN CN201020522876XU patent/CN201778785U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825211A (en) * | 2017-04-27 | 2018-11-16 | 中国石油化工股份有限公司 | Formation pressure testing balancing device and its measurement method |
| CN108825211B (en) * | 2017-04-27 | 2021-08-13 | 中国石油化工股份有限公司 | Formation pressure measurement balancing device and measurement method thereof |
| CN111236922A (en) * | 2020-02-25 | 2020-06-05 | 中国海洋石油集团有限公司 | Measurement while drilling probe device, electrical imaging while drilling method and electrical imaging while drilling system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CSIC SINKIANG HAIYUAN ENERGY EQUIPMENT CO., LTD. Free format text: FORMER OWNER: XI'AN 705TH RESEARCH INSTITUTE HAIYUAN MEASURE AND CONTROL TECHNOLOGY CO.,LTD OF CHINA SHIPBUILDING INDUSTRY CORPORATION Effective date: 20131112 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: XI'AN 705TH RESEARCH INSTITUTE HAIYUAN MEASURE AND Free format text: FORMER NAME: NO. 705 INSTITUTE HIGH TECHNOLOGY COMPANY OF CHINA SHIPBUILDING INDUSTRY CORP. |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710065 XI'AN, SHAANXI PROVINCE TO: 834007 KARAMAY, XINJIANG UYGUR AUTONOMOUS REGION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 710065 No. 11 East Road, Xi'an, Shaanxi, China Patentee after: Haiyuan China shipbuilding industry group Xi'an seventh O five Institute of measurement and Control Technology Co. Address before: 710065 No. 11 East Road, Xi'an, Shaanxi, China Patentee before: No. 705 Research Institute Hi-tech Company of China Shipbuilding Industry Corp. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131112 Address after: 834007 the Xinjiang Uygur Autonomous Region Karamay city baijiantanqu three town Yongxin Road No. 13 Patentee after: CSIC XINJIANG HAIYUAN ENERGY EQUIPMENT Co.,Ltd. Address before: 710065 No. 11 East Road, Xi'an, Shaanxi, China Patentee before: Haiyuan China shipbuilding industry group Xi'an seventh O five Institute of measurement and Control Technology Co. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20160909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |