CN201090179Y - Anti-aspiration bypass valve - Google Patents
Anti-aspiration bypass valve Download PDFInfo
- Publication number
- CN201090179Y CN201090179Y CNU2007201948990U CN200720194899U CN201090179Y CN 201090179 Y CN201090179 Y CN 201090179Y CN U2007201948990 U CNU2007201948990 U CN U2007201948990U CN 200720194899 U CN200720194899 U CN 200720194899U CN 201090179 Y CN201090179 Y CN 201090179Y
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- Prior art keywords
- valve
- valve body
- spool
- suction
- cover
- Prior art date
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- Expired - Fee Related
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Abstract
Disclosed is a suction-preventing by-pass valve. The suction-preventing by-pass valve comprises a valve body (1), a valve cover (6) is arranged in the valve body (1), a retainer ring (7) is disposed in an annular groove of the valve body (1) at the lower end of the valve cover (6), the valve body (1) and the valve cover (6) have a valve core (2), a sealing ring (5) is arranged between the valve cover (6) and the valve core (2), a sealing ring (3) is disposed between (2) the valve cover (6) and the valve core (2) and the valve body (1), a spring (4) is arranged in an empty annular cavity formed by the valve cover (6) and the valve core (2) and the valve body (1), a row of internal and external openings (9, 10) are opened on the valve body (1) and the valve core (2) respectively, and the lower end of the valve body (1) is in threaded connection with a righting body (8). The by-pass valve effectively prevents rather big suction pressure from generating, thus preventing well blowout accidents.
Description
Technical field:
The utility model relates to the used a kind of instrument in oil drilling field, especially a kind of anti-suction bypass valve.
Background technology:
In wellbore construction, easily produce the phenomenon of suction.The bottom pressure that reasons such as the suction main cause is that property of drilling fluid is bad owing to pulling out of hole, trip-out speed fast, hole shrinkage, well slough, old sand, drill bit or spiral shell are held up mud drum cause reduces, and makes bottom pressure annotate pressure less than annular space liquid.When drill bit or spiral shell are held up mud drum, serious suction will take place, the annular space drilling fluid can't be descending, and the drilling fluid liquid level in the drilling tool sharply descends, and produces very big swabbing pressure, causes bottom pressure sharply to reduce, and easily induces the generation that causes gas blowout accident.
The utility model content:
In order to solve the problem in the background technology, the utility model provides a kind of anti-suction bypass valve, and this bypass valve effectively prevents the generation of big swabbing pressure, thereby has prevented the generation of gas blowout accident.
The technical solution of the utility model is: this anti-suction bypass valve comprises valve body, valve pocket is arranged in the valve body, in the annular groove of the valve body of valve pocket lower end ring washer is arranged, valve body and valve pocket have spool, between valve pocket and the spool sealing ring is arranged, between valve pocket and spool and the valve body sealing ring is arranged, in the toroidal cavity that valve pocket and spool and valve body are formed spring is arranged, valve body and spool have row's inner/outer hole, the valve body lower end centralizer body that has been threaded.
The utlity model has following beneficial effect: this novel anti-suction bypass valve has the following advantages: one, by use anti-suction bypass valve in drilling assembly, when pit shaft undergauge or drill bit spiral shell hold up mud drum to pull out of hole, can not produce big swabbing pressure, effectively prevent the generation that causes gas blowout accident because of suction; When two, pulling out of hole, drilling fluid has only by less bit port to effluxing in the drilling tool, drilling fluid in the column easily is sprayed on the rig floor, cause the waste and the environmental pollution situation of drilling fluid, and after having used anti-suction bypass valve, in the drilling tool drilling fluid not only by bit port to effluxing, the also by-pass prot discharging by anti-suction bypass valve, eliminate the generation of spray drilling fluid phenomenon in the drill string when pulling out of hole, promptly saved drilling cost safety and environmental protection again.
Description of drawings:
Accompanying drawing 1 is a sectional view of the present utility model.
1-valve body among the figure, 2-spool, 3-sealing ring, 4-spring, 5-sealing ring, 6-valve pocket, 7-ring washer, 8-centralizer body, the outer hole of 9-, 10-endoporus.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing: as shown in the drawing, should comprise valve body 1 by anti-suction bypass valve, valve pocket 6 is arranged in the valve body 1, in the annular groove of the valve body 1 of valve pocket 6 lower ends ring washer 7 is arranged, ring washer 7 can block to fall valve pocket 6, in valve body 1 and the valve pocket 6 spool 2 is arranged, there is sealing ring 5 to prevent leakage between valve pocket 6 and the spool 2, there is sealing ring 3 to prevent leakage between valve pocket 6 and spool 2 and the valve body 1, in the toroidal cavity that valve pocket 6 and spool 2 and valve body 1 are formed spring 4 is arranged, spring 4 can reset spool 2 when pulling out of hole, and valve body 1 and spool 2 have in the row, outer hole (9,10), valve body 1 lower end screw thread is connected with centralizer body 8.
During actual the use, spiral shell in the top that anti-suction bypass valve is connected in the drilling assembly is held up the place, go into the well with drilling tool.Under the situation that turn on pump is pressed, drilling fluid promotion bypass valve inner spool 2 is descending, and bypass valve cuts out, and drilling fluid flows out by bit port; When termination of pumping, trip-out, bypass valve inner spool 2 is opened under spring 4 effects naturally, form " U " tube effect with annular space in the drilling tool, identical in the drilling tool with annular space drilling well liquid level, drilling fluid flows in the well by bit port in the drilling tool, and the liquid level of annular space is exactly the liquid level in shaft bottom, needs only in time to fill drilling fluid when pulling out of hole, the liquid that just can guarantee the shaft bottom is annotated pressure, has effectively prevented the generation of big swabbing pressure.
Should be widely used in the wellbore construction by anti-suction bypass valve, especially bore the well that meets shallow gas pay, effectively prevent the generation that causes gas blowout accident because of the suction that pulls out of hole.
Claims (1)
1. prevent the suction bypass valve for one kind, comprise valve body (1), it is characterized in that: valve pocket (6) is arranged in the valve body (1), in the annular groove of the valve body (1) of valve pocket (6) lower end ring washer (7) is arranged, valve body (1) and valve pocket (6) have spool (2), between valve pocket (6) and the spool (2) sealing ring (5) is arranged, (2) have sealing ring (3) between valve pocket (6) and spool (2) and the valve body (1), in the toroidal cavity that valve pocket (6) and spool (2) and valve body (1) are formed spring (4) is arranged, valve body (1) and spool (2) have in the row, outer hole (9,10), valve body (1) lower end screw thread is connected with centralizer body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201948990U CN201090179Y (en) | 2007-10-29 | 2007-10-29 | Anti-aspiration bypass valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201948990U CN201090179Y (en) | 2007-10-29 | 2007-10-29 | Anti-aspiration bypass valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090179Y true CN201090179Y (en) | 2008-07-23 |
Family
ID=39861939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201948990U Expired - Fee Related CN201090179Y (en) | 2007-10-29 | 2007-10-29 | Anti-aspiration bypass valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090179Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179467A (en) * | 2014-07-23 | 2014-12-03 | 成都高普石油工程技术有限公司 | Leakproof bypass valve for drill pipe |
| CN104179467B (en) * | 2014-07-23 | 2017-01-04 | 林文联 | Drilling rod leakproof by-pass valve device |
| RU2720714C1 (en) * | 2019-05-24 | 2020-05-13 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Well head for pressure release |
-
2007
- 2007-10-29 CN CNU2007201948990U patent/CN201090179Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104179467A (en) * | 2014-07-23 | 2014-12-03 | 成都高普石油工程技术有限公司 | Leakproof bypass valve for drill pipe |
| CN104179467B (en) * | 2014-07-23 | 2017-01-04 | 林文联 | Drilling rod leakproof by-pass valve device |
| RU2720714C1 (en) * | 2019-05-24 | 2020-05-13 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Well head for pressure release |
| RU2807321C1 (en) * | 2023-06-15 | 2023-11-14 | Публичное акционерное общество "Татнефть" имени В.Д. Шашина | Wellhead valve for pressure relief |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20101029 |