CN112343543A - Electro-hydraulic flat valve for fine pressure control drilling - Google Patents
Electro-hydraulic flat valve for fine pressure control drilling Download PDFInfo
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- CN112343543A CN112343543A CN202011077593.3A CN202011077593A CN112343543A CN 112343543 A CN112343543 A CN 112343543A CN 202011077593 A CN202011077593 A CN 202011077593A CN 112343543 A CN112343543 A CN 112343543A
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- valve
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- piston rod
- oil cylinder
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- 238000005553 drilling Methods 0.000 title claims abstract description 29
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 230000006698 induction Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 22
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/16—Control means therefor being outside the borehole
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides an electro-hydraulic flat valve for fine pressure control drilling, which relates to the technical field of petroleum drilling and comprises the following components: the device comprises a controller, an electro-hydraulic actuator, a piston rod and a PFF gate valve; the electro-hydraulic actuator comprises a servo motor, a hydraulic control distribution valve, a bidirectional hydraulic motor and an oil cylinder; the servo motor controls the opening and closing of the hydraulic control distribution valve, the hydraulic control distribution valve is connected with the oil cylinder, and the oil cylinder is provided with an oil inlet and an oil outlet, so that the liquid flow of the oil inlet and/or the oil outlet is distributed to drive the bidirectional hydraulic motor to work; the bidirectional hydraulic motor is connected with a piston rod, and the piston rod is connected with the PFF gate valve. The electro-hydraulic flat valve provided by the invention is used. The problem of traditional manual and hydraulic control take place down the switch inefficiency, the error is big, intensity of labour limitation such as big is solved, the intelligent control of meticulous accuse pressure well drilling gate valve has been realized.
Description
Technical Field
The invention relates to the technical field of petroleum drilling, in particular to an electro-hydraulic flat valve for fine pressure control drilling.
Background
The fine pressure control drilling technology (MPD) is a new drilling technology developed in recent years, and is mainly used for solving the problems of underground complex conditions such as well leakage and well kick caused by a narrow safe density window, a multi-pressure system and a pressure sensitive stratum in deep well drilling, and safe drilling of a sulfur-containing stratum and a pressure uncertainty high-risk exploration well. The essence of the fine pressure control well drilling is to determine a bottom hole pressure limit, so that a corresponding annular pressure profile is effectively controlled by using various tools and technical measures, stratum fluid is effectively controlled to invade a shaft, well drilling complex conditions such as well kick, well leakage and the like are reduced, and the risk and the cost during the well drilling under the condition of a narrow density window are reduced. The core technology is that the closed-loop real-time monitoring and the accurate control of the shaft annular pressure are realized by means of measurement while drilling annular pressure, ground automatic throttling adjustment back pressure, pressure compensation and the like. Therefore, the accurate control of the well bore annular pressure by controlling the wellhead back pressure is a key technology to be solved.
In the current fine pressure control drilling operation, the opening of the throttle valve needs to be adjusted according to the magnitude of wellhead back pressure, and a proper amount of high-pressure drilling fluid is supplemented or redundant drilling fluid is released. When the wellhead back pressure is low, a flat valve at the upstream of a throttle valve needs to be opened in a short time to release high-pressure drilling fluid, and the pressure and the discharge capacity of the drilling fluid are adjusted through the throttle valve to increase the wellhead back pressure; after the back pressure of the wellhead is adjusted, an upstream channel of the throttling valve needs to be cut off quickly, and the throttling valve is prevented from bearing continuous high pressure.
Currently, a manual or hydraulic plate valve is typically used to shut off or open the passage upstream of the throttle valve. However, the existing manual control mainly has the following defects: firstly, the time for operating the flat valve is more than 15 seconds, the operation response time is slow, and once an emergency occurs, the flat valve cannot be immediately controlled according to requirements; secondly, due to the fact that the control time is long, the pressure at the wellhead is too low or too high, the pressure system in the shaft is more complex, and safe operation and reservoir protection are not facilitated; thirdly, the labor intensity of manual operation is high, the misoperation is easily caused by fatigue, and the well control risk is increased. The prior art improves the hydraulic flat valve, although the time of the hydraulic operation flat valve is shorter than that of the manual flat valve, the hydraulic operation flat valve can be realized only by matching with an independent hydraulic source, and the leakage problem of hydraulic oil is easy to occur.
In conclusion, the flat valve in the prior art has the problems of high misoperation probability and poor safety.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an electro-hydraulic flat valve for fine pressure control drilling, so as to alleviate technical problems of a flat valve in the prior art, such as high probability of misoperation and poor safety.
The invention provides an electro-hydraulic flat valve for fine pressure control drilling, which comprises: the device comprises a controller, an electro-hydraulic actuator, a piston rod and a PFF gate valve;
the electro-hydraulic actuator comprises a servo motor, a hydraulic control distribution valve, a bidirectional hydraulic motor and an oil cylinder;
the servo motor controls the opening and closing of the hydraulic control distribution valve, the hydraulic control distribution valve is connected with the oil cylinder, and the oil cylinder is provided with an oil inlet and an oil outlet, so that the liquid flow of the oil inlet and/or the oil outlet is distributed to drive the bidirectional hydraulic motor to work;
the bidirectional hydraulic motor is connected with the piston rod, and the piston rod is connected with the PFF gate valve.
Preferably, the device also comprises an induction magnet and an indicator light;
the induction magnet is positioned at the top of the piston rod, and the indicating lamp comprises a valve opening indicating lamp and a valve closing indicating lamp;
when the valve is opened, the induction magnet is communicated with a passage of the valve opening indicator lamp;
when the valve is closed, the induction magnet is communicated with the passage of the valve closing indicator lamp.
The embodiment of the invention has the following beneficial effects: the invention provides an electro-hydraulic flat valve for fine pressure control drilling, which comprises: the device comprises a controller, an electro-hydraulic actuator, a piston rod and a PFF gate valve; the electro-hydraulic actuator comprises a servo motor, a hydraulic control distribution valve, a bidirectional hydraulic motor and an oil cylinder; the servo motor controls the opening and closing of the hydraulic control distribution valve, the hydraulic control distribution valve is connected with the oil cylinder, and the oil cylinder is provided with an oil inlet and an oil outlet, so that the liquid flow of the oil inlet and/or the oil outlet is distributed to drive the bidirectional hydraulic motor to work; the bidirectional hydraulic motor is connected with a piston rod, and the piston rod is connected with the PFF gate valve. The electro-hydraulic flat valve provided by the invention is used. The problem of traditional manual and hydraulic control take place down the switch inefficiency, the error is big, intensity of labour limitation such as big is solved, the intelligent control of meticulous accuse pressure well drilling gate valve has been realized.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a structural diagram of an electro-hydraulic flat valve for fine pressure control drilling according to an embodiment of the present invention;
FIG. 2 is a block diagram of an electro-hydraulic actuator according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a controller according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control circuit according to an embodiment of the present invention.
Icon: 1-electro-hydraulic actuator; 2-a connecting seat; 3-PFF gate valve; 4-a piston rod; 5, a controller; 201-a servo motor; 202-a bi-directional hydraulic motor; 203-PFF gate valve; 204 — induction magnet.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Currently, a manual or hydraulic plate valve is generally used to shut off or open the passage upstream of the throttle valve. However, the existing manual control mainly has the following defects: firstly, the time for operating the flat valve is more than 15 seconds, the operation response time is slow, and once an emergency occurs, the flat valve cannot be immediately controlled according to requirements; secondly, due to the fact that the control time is long, the pressure at the wellhead is too low or too high, the pressure system in the shaft is more complex, and safe operation and reservoir protection are not facilitated; thirdly, the manual operation has high labor intensity, the misoperation is easily caused by fatigue, and the well control risk is increased. The problem of traditional manual and hydraulic control take place down the switch inefficiency, the error is big, intensity of labour limitation such as big is solved, the intelligent control of meticulous accuse pressure well drilling gate valve has been realized.
For the convenience of understanding the embodiment, the electro-hydraulic flat valve for fine pressure control drilling disclosed by the embodiment of the invention is first described in detail.
The first embodiment is as follows:
the invention provides an electro-hydraulic flat valve for fine pressure control drilling, which comprises: the controller 5, the electro-hydraulic actuator 1, the piston rod 4 and the PFF gate valve 203;
the electro-hydraulic actuator 1 comprises a servo motor 201, a hydraulic control distribution valve, a bidirectional hydraulic motor 202 and an oil cylinder;
the bidirectional hydraulic motor 202 is connected with the piston rod 4, and the piston rod 4 is connected with the PFF gate valve 203.
The servo motor 201 controls the opening and closing of the hydraulic control distribution valve, the hydraulic control distribution valve is connected with the oil cylinder, and the oil cylinder is provided with an oil inlet and an oil outlet, so that the liquid flow of the oil inlet and/or the oil outlet is distributed to drive the bidirectional hydraulic motor 202 to work;
the connecting seat 2 connects the piston rod 4 of the electro-hydraulic actuator with the PFF gate valve 203, and drives the valve plate of the gate valve to move in a straight stroke, so that the channel is cut off and opened;
further, the controller 5 sends an electric signal to the servo motor 201, specifically, a 4-20mA control electric signal, the servo motor 201 pushes the oil cylinder to act, the hydraulic control distribution valve is driven to work, and then the bidirectional hydraulic motor 202 is driven to work, and the bidirectional hydraulic motor 202 drives the PFF gate valve 203 to work through the piston rod 4;
further, when the work of the PFF gate valve 203 is finished, the servo motor 201 stops rotating, the central control room obtains an opening signal of the PFF gate valve 203, and after the back pressure is adjusted to the right position, the PFF gate valve 203 is pushed to close, so that the full action of the PFF gate valve 203 is completed in a short time;
preferably, the device also comprises an induction magnet 204 and an indicator light;
the induction magnet 204 is positioned at the top of the piston rod 4, and the indicator lights comprise a valve opening indicator light and a valve closing indicator light;
when the valve is opened, the induction magnet 204 is communicated with the passage of the valve opening indicator lamp;
when the valve is closed, the sensing magnet 204 turns on the valve closing indicator.
Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides a fine accuse pressure drilling is with electro-hydraulic flat valve which characterized in that includes: the device comprises a controller, an electro-hydraulic actuator, a piston rod and a PFF gate valve;
the electro-hydraulic actuator comprises a servo motor, a hydraulic control distribution valve, a bidirectional hydraulic motor and an oil cylinder;
the servo motor controls the opening and closing of the hydraulic control distribution valve, the hydraulic control distribution valve is connected with the oil cylinder, and the oil cylinder is provided with an oil inlet and an oil outlet, so that the liquid flow of the oil inlet and/or the oil outlet is distributed to drive the bidirectional hydraulic motor to work;
the bidirectional hydraulic motor is connected with the piston rod, and the piston rod is connected with the PFF gate valve.
2. The method of claim 1, further comprising an induction magnet and an indicator light;
the induction magnet is positioned at the top of the piston rod, and the indicating lamp comprises a valve opening indicating lamp and a valve closing indicating lamp;
when the valve is opened, the induction magnet is communicated with a passage of the valve opening indicator lamp;
when the valve is closed, the induction magnet is communicated with the passage of the valve closing indicator lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011077593.3A CN112343543A (en) | 2020-10-10 | 2020-10-10 | Electro-hydraulic flat valve for fine pressure control drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011077593.3A CN112343543A (en) | 2020-10-10 | 2020-10-10 | Electro-hydraulic flat valve for fine pressure control drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112343543A true CN112343543A (en) | 2021-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011077593.3A Pending CN112343543A (en) | 2020-10-10 | 2020-10-10 | Electro-hydraulic flat valve for fine pressure control drilling |
Country Status (1)
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| CN (1) | CN112343543A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102628520A (en) * | 2012-04-25 | 2012-08-08 | 九江市环球科技开发有限公司 | Miniature electrical liquid controller without tank |
| US20150041688A1 (en) * | 2012-04-23 | 2015-02-12 | Baojun Liu | Electro-hydraulic system for driving large-scale rotary motion valve supplied by solar low-capacity power |
| CN105257889A (en) * | 2015-07-17 | 2016-01-20 | 湖南山源安自控系统有限公司 | Electro-hydraulic driving system for sluice valve and sluice valve |
| CN107355263A (en) * | 2017-05-16 | 2017-11-17 | 上海淦凌电力设备有限公司 | A kind of small machine highback pressure control system of water pump |
| CN210829141U (en) * | 2019-07-18 | 2020-06-23 | 北京格瑞迪斯石油技术有限公司 | Fast switching and shunting device for fine pressure control drilling |
| CN211347371U (en) * | 2020-03-12 | 2020-08-25 | 张迎军 | Valve in-place detection device for seat plate valve |
-
2020
- 2020-10-10 CN CN202011077593.3A patent/CN112343543A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150041688A1 (en) * | 2012-04-23 | 2015-02-12 | Baojun Liu | Electro-hydraulic system for driving large-scale rotary motion valve supplied by solar low-capacity power |
| CN102628520A (en) * | 2012-04-25 | 2012-08-08 | 九江市环球科技开发有限公司 | Miniature electrical liquid controller without tank |
| CN105257889A (en) * | 2015-07-17 | 2016-01-20 | 湖南山源安自控系统有限公司 | Electro-hydraulic driving system for sluice valve and sluice valve |
| CN107355263A (en) * | 2017-05-16 | 2017-11-17 | 上海淦凌电力设备有限公司 | A kind of small machine highback pressure control system of water pump |
| CN210829141U (en) * | 2019-07-18 | 2020-06-23 | 北京格瑞迪斯石油技术有限公司 | Fast switching and shunting device for fine pressure control drilling |
| CN211347371U (en) * | 2020-03-12 | 2020-08-25 | 张迎军 | Valve in-place detection device for seat plate valve |
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Application publication date: 20210209 |
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