CN2861668Y - Pressure control valve for well cementing - Google Patents
Pressure control valve for well cementing Download PDFInfo
- Publication number
- CN2861668Y CN2861668Y CN 200520133545 CN200520133545U CN2861668Y CN 2861668 Y CN2861668 Y CN 2861668Y CN 200520133545 CN200520133545 CN 200520133545 CN 200520133545 U CN200520133545 U CN 200520133545U CN 2861668 Y CN2861668 Y CN 2861668Y
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- CN
- China
- Prior art keywords
- pressure
- valve
- regulation tube
- pressure regulation
- needle
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- Expired - Fee Related
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Abstract
The utility model discloses a well-cementing pressure control valve, which mainly solves the problem that the sleeving or other equipment is damaged because of a systemic pressure instability in the case of the cementing operation. The utility model is characterized in that a valve body (3) is in female connection with a pressure regulation tube (4). The middle of the pressure regulation tube (4) is traversed with a control rod (8) that is connected with a needle valve (6) at the lower end. The lower end of the needle valve (6) is arranged on a valve base (1). The control rod(8) is sheathed with a spring (7), both ends of which are respectively contacted with the pressure regulation tube (4) and the needle valve(6). With the well-cementing pressure control valve, the different pressure balance values can be set and adjusted with the features as an accurate setting of pressure, a rapid reduction of pressure, a swiftness of reaction rate, a reliability, and a handiness, etc.
Description
Technical field:
Used a kind of control valve of protecting cementing system pressure when the utility model relates to cementing operation operation in the field of oil drilling, the pressure controlled valve of especially cementing the well.
Background technique:
At present, in the reinforcing oil well construction operation, if pipeline and cannula system force value surpass predetermined value, may cause sleeve pipe or miscellaneous equipment to damage, and existing pressure control generally adopts the rotating speed of adjusting motor to realize, pressure control judges that by experience reaction velocity is slow, wayward, thus the well cementation process safe is affected.
The model utility content:
Unstable and the problem that causes sleeve pipe or miscellaneous equipment to damage of system pressure when solving the cementing operation operation, the utility model provides a kind of well cementation pressure controlled valve, this well cementation pressure controlled valve can be set and adjust different pressure balance values, has characteristics such as level pressure is accurate, step-down is rapid, reaction velocity is fast, safe and reliable and easy to operate.
The technical solution of the utility model is: this well cementation pressure controlled valve comprises valve seat, cavity and valve body, valve seat and valve body are connected to the upper and lower of cavity, the valve body internal thread connects the pressure regulation tube, be installed with the controlling rod of lower end connection needle-valve in the middle of the pressure regulation tube, the needle-valve lower end places on the valve seat, be with spring on the controlling rod, touch mutually with pressure regulation tube and needle-valve respectively at the two ends of spring.
The upper end of above-mentioned pressure regulation tube is fixed with handwheel; Stretch out on the controlling rod of pressure regulation tube top stop nut is arranged; The two ends, the left and right sides of cavity all are furnished with joint in oily ninth of the ten Heavenly Stems.
The utlity model has following beneficial effect: owing to take such scheme, set and adjust different pressure balance values, when system causes the pressure rising to reach for a certain reason and surpasses predetermined pressure, the effect promotion needle-valve pressure spring of hydraulic coupling is lifted off a seat and is moved upward, so liquid is discharged from relief hole, the rapid pressure release of system, when system pressure drops to scheduled pressure value when following, needle-valve rapid return under the effect of compression control spring moves down, withstand on the valve seat 1 and close relief hole, repeat said process.This process is finished very fast, and frequency is very high, guarantees that system pressure maintains fluctuation in the scope very little below the predetermined pressure.Have characteristics such as level pressure is accurate, step-down is rapid, reaction velocity is fast, safe and reliable and easy to operate.
Description of drawings:
Accompanying drawing 1 is a structure sectional view of the present utility model.
1-valve seat among the figure, 2-cavity, 3-valve body, 4-pressure regulation tube, 5-handwheel, 6-needle-valve, 7-spring, 8-controlling rod, 9-stop nut.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By shown in Figure 1, this well cementation pressure controlled valve comprises valve seat 1, cavity 2 and valve body 3, valve seat 1 and valve body 3 are connected to the upper and lower of cavity 2, valve body 3 internal threads connect pressure regulation tube 4, are installed with the controlling rod 8 that the lower end connects needle-valve 6 in the middle of the pressure regulation tube 4, and needle-valve 6 lower ends place on the valve seat 1, be with spring 7 on the controlling rod 8, touch mutually with pressure regulation tube 4 and needle-valve 6 respectively at the two ends of spring 7, and needle-valve 6 acts on the valve seat 1 by spring 7, drives pressure regulation tube 4 by rotation hand wheel 5 and come the adjust system scheduled pressure value.The upper end of pressure regulation tube 4 is fixed with handwheel 5; Stretching out on the controlling rod 8 of pressure regulation tube 4 tops has stop nut 9, blocks stop nut 9 when moving on the pressure regulation tube 4, can drive controlling rod 8 and needle-valve 6 moves upward.The two ends, the left and right sides of cavity 2 all are furnished with joint in oily ninth of the ten Heavenly Stems, and oil joint in the ninth of the ten Heavenly Stems is connected with the pipeline or the cementing head of cementing operation.
When using in the cementing operation process, according to demand, on pressure regulation tube 4, carved pressure scale, on the handwheel 5 pointer is installed,, is made hand motion arrive the predetermined pressure scale by rotation hand wheel 5, at this moment pressure regulation tube 4 inner springs 7 compression control needle-valves 6 withstand on the valve seat 1, and relief hole is closed.When the band press liquid enters before valve pocket do not reach predetermined cracking pressure, needle-valve 6 closed tightly relief holes, whole pipeline is worked below predetermined pressure.When system causes the pressure rising to reach for a certain reason and surpasses predetermined pressure, the effect of hydraulic coupling promotes needle-valve 6 pressure springs 7 and lifts off a seat and 1 move upward, so liquid is discharged from relief hole, the rapid pressure release of system, when system pressure drops to scheduled pressure value when following, needle-valve 6 rapid return under the effect of compression control spring 7 moves down, and withstands on the valve seat 1 and closes relief hole, repeats said process.This process is finished very fast, and frequency is very high, guarantees that system pressure maintains fluctuation in the scope very little below the predetermined pressure.After construction finishes, can open relief hole voluntarily by the effect of rotation hand wheel 5 and stop nut 9 at regular intervals, it is safeguarded and cleans.
The utility model is applicable to the cementing operation operation of all kinds of well types, but also can require to adjust the different force value of setting according to each staged construction in one-stop operation, and to meet the different needs, adaptability is strong, can extensively promote the use of.
Claims (4)
1, a kind of well cementation pressure controlled valve, comprise valve seat (1), cavity (2) and valve body (3), valve seat (1) and valve body (3) are connected to the upper and lower of cavity (2), it is characterized in that: valve body (3) internal thread connects pressure regulation tube (4), be installed with the controlling rod (8) of lower end connection needle-valve (6) in the middle of the pressure regulation tube (4), needle-valve (6) lower end places on the valve seat (1), is with spring (7) on the controlling rod (8), and touch mutually with pressure regulation tube (4) and needle-valve (6) respectively at the two ends of spring (7).
2, well cementation pressure controlled valve according to claim 1 is characterized in that: the upper end of pressure regulation tube (4) is fixed with handwheel (5).
3, well cementation pressure controlled valve according to claim 1 is characterized in that: stretching out on the controlling rod (8) of pressure regulation tube (4) top has stop nut (9).
4, well cementation pressure controlled valve according to claim 1 is characterized in that: the two ends, the left and right sides of cavity (2) all are furnished with joint in oily ninth of the ten Heavenly Stems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520133545 CN2861668Y (en) | 2005-12-02 | 2005-12-02 | Pressure control valve for well cementing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520133545 CN2861668Y (en) | 2005-12-02 | 2005-12-02 | Pressure control valve for well cementing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2861668Y true CN2861668Y (en) | 2007-01-24 |
Family
ID=37659297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520133545 Expired - Fee Related CN2861668Y (en) | 2005-12-02 | 2005-12-02 | Pressure control valve for well cementing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2861668Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455470B (en) * | 2014-10-10 | 2017-03-08 | 程少春 | A kind of high pressure resistant reverse needle valve |
| CN111396607A (en) * | 2020-03-19 | 2020-07-10 | 刘超 | Automatic water injection flow adjusting device |
| CN111827925A (en) * | 2020-08-25 | 2020-10-27 | 中石化汉江石油工程有限公司钻井一公司 | Well head intelligent pressure control protection device for well cementation operation |
| CN116163673A (en) * | 2023-04-25 | 2023-05-26 | 中国石油大学(华东) | Micro-pressure control device and method for deep water shallow gradient well cementation circulating wellhead |
-
2005
- 2005-12-02 CN CN 200520133545 patent/CN2861668Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104455470B (en) * | 2014-10-10 | 2017-03-08 | 程少春 | A kind of high pressure resistant reverse needle valve |
| CN111396607A (en) * | 2020-03-19 | 2020-07-10 | 刘超 | Automatic water injection flow adjusting device |
| CN111827925A (en) * | 2020-08-25 | 2020-10-27 | 中石化汉江石油工程有限公司钻井一公司 | Well head intelligent pressure control protection device for well cementation operation |
| CN116163673A (en) * | 2023-04-25 | 2023-05-26 | 中国石油大学(华东) | Micro-pressure control device and method for deep water shallow gradient well cementation circulating wellhead |
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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: 20070124 Termination date: 20141202 |
|
| EXPY | Termination of patent right or utility model |