CN204729054U - A kind of wellhead casing pipe pressure release control device - Google Patents
A kind of wellhead casing pipe pressure release control device Download PDFInfo
- Publication number
- CN204729054U CN204729054U CN201520190601.3U CN201520190601U CN204729054U CN 204729054 U CN204729054 U CN 204729054U CN 201520190601 U CN201520190601 U CN 201520190601U CN 204729054 U CN204729054 U CN 204729054U
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- China
- Prior art keywords
- casing pipe
- wellhead casing
- pressure release
- control device
- comparison circuit
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Abstract
The utility model provides a kind of wellhead casing pipe pressure release control device, comprise: comparison circuit, pressure transmitter and electromagnetic valve, wherein, the input port of pressure transmitter is communicated with the first wellhead casing pipe, for gathering the force value of the first wellhead casing pipe, and transfer to comparison circuit; Comparison circuit, for comparing the force value of the first wellhead casing pipe and the first preset pressure value, and sends to electromagnetic valve when force value is greater than the first preset pressure value and opens control signal; Electromagnetic valve is arranged between the first wellhead casing pipe and relief pipeline, for opening when receiving the unlatching control signal from comparison circuit, carries out pressure release to make relief pipeline to the first wellhead casing pipe.The utility model can maintain gas pressure in each wellhead casing pipe and keep balance.
Description
Technical field
The utility model relates to technical field of petroleum extraction, is specifically related to a kind of wellhead casing pipe pressure release control device.
Background technology
Oil well casing pressure affects one of principal element that oil well normally produces, reasonably controls and utilize casing pressure, will directly affect oil well crude oil output.The change of the every bit of oil well casing pressure directly affects the submergence of oil well, pump efficiency and wax deposition degree, and then directly affects oil well crude oil output.And oil well casing pressure varies, for every mouthful of well concrete condition, science determines dynamic casing pressure value, and oil well could be allowed to have given play to maximum potential.
Utility model content
One of them object of the present utility model is to provide a kind of wellhead casing pipe pressure release control device, for solving the problem that can not adjust the force value of wellhead casing pipe in prior art at any time.
The utility model provides a kind of wellhead casing pipe pressure release control device, comprising: comparison circuit, pressure transmitter and electromagnetic valve, wherein,
The input port of described pressure transmitter is communicated with the first wellhead casing pipe, for gathering the force value of described first wellhead casing pipe, and transfers to described comparison circuit;
Described comparison circuit, for comparing the force value of described first wellhead casing pipe and the first preset pressure value, and sends to described electromagnetic valve when described force value is greater than the first preset pressure value and opens control signal; Described comparison circuit also transmits control signal to described electromagnetic valve for the comparative result according to this force value and preset pressure value;
Described electromagnetic valve is arranged between described first wellhead casing pipe and described relief pipeline, for opening when receiving the described unlatching control signal from described comparison circuit, carries out pressure release to make described relief pipeline to described first wellhead casing pipe.
Alternatively, described device also comprises safety valve, described safety valve comprises the first port and the second port, described first port is communicated with described first wellhead casing pipe, second port is communicated with described relief pipeline, described safety valve be used for when described first wellhead casing pipe force value more than during the second scheduled pressure value by the gas discharging of described first wellhead casing pipe to relief pipeline.
Alternatively, along the direction of the air-flow in the first wellhead casing pipe, described safety valve is arranged on the upstream of described electromagnetic valve.
Alternatively, described comparison circuit comprises voltage comparator.
Alternatively, described device also comprises explosion-proof tank, and described explosion-proof tank is enclosed in the outside of described comparison circuit, described pressure transmitter, described electromagnetic valve and described safety valve.
Alternatively, described explosion-proof tank is provided with first and portals, and described first portals for being introduced in described explosion-proof tank by relief pipeline.
Alternatively, described explosion-proof tank is provided with second and portals, and described second portals for being drawn outside described explosion-proof tank by the first wellhead casing pipe.
Alternatively, described wellhead casing pipe pressure release control device also comprises snap joint, for fixing described second wellhead casing pipe and described first wellhead casing pipe; Wherein,
The Single port of described snap joint is fixed by screw thread and described explosion-proof tank, and is communicated with the first wellhead casing pipe; Another port is communicated with the second wellhead casing pipe.
Alternatively, described wellhead casing pipe pressure release control device also comprises display module, and described display module is electrically connected with described comparison circuit, for showing the force value from described pressure transmitter.
Alternatively, described display module is organic light-emitting diode (OLED) display screen.
The wellhead casing pipe pressure release control device that the utility model provides compared with prior art, can solve the problem of fixed value pressure release in prior art.By regulating the reference voltage of comparison circuit, changing the preset value of pressure release, realizing the effect adjusting the gas pressure in wellhead casing pipe at any time.
Accompanying drawing explanation
Fig. 1 is a kind of wellhead casing pipe pressure release control device scheme of installation in the utility model;
Fig. 2 is a kind of wellhead casing pipe pressure release control device structural representation in the utility model;
Fig. 3 is comparison circuit functional block diagram in the utility model;
Description of reference numerals: 100-electromagnetic valve wire connection cavity, 110-pressure transmitter, the input port of 111-pressure transmitter, the output port of 112-pressure transmitter, 120-comparison circuit, 130-electromagnetic valve, the entrance of 131-electromagnetic valve, the outlet of 132-electromagnetic valve, the control end of 133-electromagnetic valve, 140-safety valve, the entrance of 141-safety valve, the outlet of 142-safety valve, 150-first wellhead casing pipe, 160-snap joint, 170-relief pipeline, 180-second wellhead casing pipe, 190-explosion-proof tank, first of 191-explosion-proof tank portals, second of 192-explosion-proof tank portals, the 3rd of 193-explosion-proof tank portals, 200-display module.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
The utility model embodiment provides a kind of wellhead casing pipe pressure release control device, comprising: comparison circuit, pressure transmitter and electromagnetic valve, wherein,
The input port of pressure transmitter is communicated with the first wellhead casing pipe, for gathering the force value of the first wellhead casing pipe, and transfers to comparison circuit;
Comparison circuit, for comparing the force value of the first wellhead casing pipe and the first preset pressure value, and sends to electromagnetic valve when force value is greater than the first preset pressure value and opens control signal; Comparison circuit is also for transmitting control signal to electromagnetic valve according to the comparative result of this force value and preset pressure value;
Electromagnetic valve, is arranged between the first wellhead casing pipe and relief pipeline, for opening when receiving the unlatching control signal from comparison circuit, carries out pressure release to make relief pipeline to the first wellhead casing pipe.
The utility model embodiment, by arranging comparison circuit, electromagnetic valve and pressure transmitter, carries out pressure release to wellhead casing pipe, can solve in prior art the problem adopting fixed value pressure release.Compared with prior art, the utility model is easy to install, be easy to control, and can carry out pressure adjustment respectively according to different oil wells.
Fig. 1 shows a kind of wellhead casing pipe pressure release control device in the utility model and installs situation.As shown in Figure 1, in certain part of the production tree of oil well, comprise production tube 6, valve 1, valve 2, valve 3, valve 4 and valve 5.Wherein, valve 2 and valve 3 are used for controlling casing gas, and valve 4 and valve 5 are used for control oil pipe gas.Airflow direction in sleeve pipe, this device is installed on the rear end of valve 2 and valve 3, is used for controlling the pressure of gas in sleeve pipe.
Fig. 2 shows the structure of a kind of wellhead casing pipe pressure release control device in the utility model.As shown in Figure 2, this device comprises pressure transmitter 110, comparison circuit 120, electromagnetic valve 130, first wellhead casing pipe 150 and relief pipeline 170.The input port 111 of pressure transmitter is communicated with the first wellhead casing pipe 150, and output port 112 is connected with comparison circuit 120.Comparison circuit 120 is connected with the control end 133 of electromagnetic valve 130 by electromagnetic valve wire connection cavity 100.The entrance 131 of electromagnetic valve 130 is communicated with the first wellhead casing pipe 150, and outlet 132 is communicated with relief pipeline 170.
Pressure transmitter 110 gathers the pressure of gas in this wellhead casing pipe 150, converts the force value that this gathers to the signal of telecommunication simultaneously, and is transferred to comparison circuit 120 by output port 112.This signal of telecommunication and the first pressure preset value compare by comparison circuit 120, if this signal of telecommunication is greater than the first pressure preset value, then produces and open control signal and transfer to electromagnetic valve 130.Electromagnetic valve 130 is opened according to unlatching control signal, and the gas in the first wellhead casing pipe 150 is entered in relief pipeline 170.When this signal of telecommunication is less than the first pressure preset value, comparison circuit 120 produces closing control signal, and now electromagnetic valve 130 cuts out.By said process, make the pressure of gas in the first wellhead casing pipe maintain dynamic equilibrium, thus solve the problem adopting in prior art and fixedly carry out pressure release, reach raising pump efficiency, increase the object of oil and gas production.
Due in practical application, may there is the situation of power-off, now electromagnetic valve 130 does not work, and may affect the pressure of wellhead casing pipe, cause damage to equipment, and then affects the output of oil gas.For this reason, in the utility model one embodiment, safety valve has been set up.As shown in Figure 2, safety valve 140 is arranged on the upstream of electromagnetic valve, and wherein, entrance 141 is communicated with the first wellhead casing pipe 150, and outlet 142 is communicated with relief pipeline 170.Safety valve 140 adopts machine mechanical control method, spring (not marking in figure) is provided with in the inside of safety valve 140, when the force value of the first wellhead casing pipe 150 is more than the second pressure preset value, safety valve 140 works, and makes the gas in the first wellhead casing pipe 150 enter relief pipeline 170 by safety valve 140.
The present embodiment is by arranging safety valve 140, and when can make power-off in the idle situation of electromagnetic valve 130, safety valve 140 can carry out pressure release.In addition, the flow direction of gas in the first wellhead casing pipe 150, safety valve 140 is arranged on the upstream of electromagnetic valve 130, when the gas pressure in the first wellhead casing pipe 150 increases suddenly, safety valve 140 first action, realize pressure release, proterctive equipment is superpressure not; Electromagnetic valve 130 and then action, accelerate the speed of pressure release further.Designed by Double-pressure-relief, guarantee device and security of system stable operation.
Alternatively, in embodiment of the present utility model, this device is also provided with explosion-proof tank 190.This explosion-proof tank 190 is enclosed in the outside of pressure transmitter 110, comparison circuit 120, electromagnetic valve 130, safety valve 140, first wellhead casing pipe 150 and relief pipeline 170, realizes integrated design, for the protection of the said equipment.This explosion-proof tank 190 is also provided with first and portals and 191 and second portal 192, and wherein, first portals 191 inner for introducing the first wellhead casing pipe 150 to explosion-proof tank, and second portals 192 for drawing relief pipeline 170.
Alternatively, comparison circuit comprises voltage comparator.As shown in Figure 3, this voltage comparator comprises input 121, reference edge 122 and output 123.Wherein, input 121 is connected with the output port 112 of pressure transmitter 110, and reference edge 122 connects reference voltage, and output 123 is connected with the control end 133 of electromagnetic valve 130.The input of this voltage comparator receives the signal of telecommunication from pressure transmitter 110, compares with the pressure preset value of reference edge, and then control signal is exported by output unlatching.Alternatively, in the present embodiment, the pressure preset value of reference edge can adjust, thus the wellhead casing pipe pressure realized for each oil well controls, the dynamic casing pressure value of science determination wellhead casing pipe, plays the maximum potential of oil well.
Alternatively, wellhead casing pipe pressure release control device 7 also comprises snap joint 160.Wherein, the Single port of snap joint 160 is fixed by screw thread and explosion-proof tank, and be communicated with by first first wellhead casing pipe 150 of drawing that portals, another port is communicated with the second wellhead casing pipe 180, for fixing described second wellhead casing pipe 180 and described first wellhead casing pipe 150.The utility model, by adopting snap joint, when making this device of in-site installation, only need be tightened at assigned address, easy to operate, and is easy to change.
Alternatively, wellhead casing pipe pressure release control device 7 also comprises display module 200, and this display module 193 is electrically connected with comparison circuit 120, and is fixed on explosion-proof tank 190 side surface, for showing the force value from described pressure transmitter 110.Alternatively, this display module also includes OLED (OLED) display screen.
Alternatively, in the utility model one embodiment, also comprise communication module, this communication module is transferred to the control room of far-end by the 3rd perforate 193 on explosion-proof tank for the force value that gathered by pressure transmitter.Alternatively, this communication module adopts GPRS (General Packet Radio Service) module or RTU (Remote Terminal Unit) module.By communication module, the pressure of wellhead casing pipe can be monitored in control room, and can control the reference voltage of comparison circuit, thus realizes the control to gas pressure in each oil country tubular good.
In sum, the utility model is for a set of wellhead casing pipe pressure release control device of design, for different well location, according to analysis that is theoretical and field test data, sum up Reasonable casing pressure value scope when oil well is normally produced, by Intelligent Measurement and control system, regulate the pressure of oil well casing, reach raising pump efficiency, increase the object of oil and gas production.This device can realize the long-range setting of well head pressure and the manual intelligent design of well head, and can realize Real-Time Monitoring and the remote transmission function of casing pressure.
Above embodiment is only for illustration of the utility model; and be not limitation of the utility model; the those of ordinary skill of relevant technical field; when not departing from spirit and scope of the present utility model; can also make a variety of changes and modification; therefore all equivalent technical schemes also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (10)
1. a wellhead casing pipe pressure release control device, is characterized in that, comprising: comparison circuit, pressure transmitter and electromagnetic valve, wherein,
The input port of described pressure transmitter is communicated with the first wellhead casing pipe, for gathering the force value of described first wellhead casing pipe, and transfers to described comparison circuit;
Described comparison circuit is used for comparing the force value of described first wellhead casing pipe and the first preset pressure value, and sends to described electromagnetic valve when described force value is greater than the first preset pressure value and open control signal; Described comparison circuit also transmits control signal to described electromagnetic valve for the comparative result according to this force value and preset pressure value;
Described electromagnetic valve is arranged between described first wellhead casing pipe and described relief pipeline, for opening when receiving the described unlatching control signal from described comparison circuit, carries out pressure release to make described relief pipeline to described first wellhead casing pipe.
2. wellhead casing pipe pressure release control device as claimed in claim 1, is characterized in that,
Described device also comprises safety valve, described safety valve comprises the first port and the second port, described first port is communicated with described first wellhead casing pipe, second port is communicated with described relief pipeline, described safety valve be used for when described first wellhead casing pipe force value more than during the second scheduled pressure value by the gas discharging of described first wellhead casing pipe to relief pipeline.
3. wellhead casing pipe pressure release control device as claimed in claim 2, is characterized in that,
Along the direction of the air-flow in the first wellhead casing pipe, described safety valve is arranged on the upstream of described electromagnetic valve.
4. wellhead casing pipe pressure release control device as claimed in claim 1, is characterized in that,
Described comparison circuit comprises voltage comparator.
5. wellhead casing pipe pressure release control device as claimed in claim 1, is characterized in that,
Described device also comprises explosion-proof tank, and described explosion-proof tank is enclosed in the outside of described comparison circuit, described pressure transmitter, described electromagnetic valve and safety valve.
6. wellhead casing pipe pressure release control device as claimed in claim 5, is characterized in that,
Described explosion-proof tank is provided with first and portals, and described first portals for being drawn outside described explosion-proof tank by relief pipeline.
7. wellhead casing pipe pressure release control device as claimed in claim 6, is characterized in that,
Described explosion-proof tank is also provided with second and portals, and described second portals for being introduced in described explosion-proof tank by the first wellhead casing pipe.
8. wellhead casing pipe pressure release control device as claimed in claim 1, is characterized in that,
Described wellhead casing pipe pressure release control device also comprises snap joint, for fixing the second wellhead casing pipe and described first wellhead casing pipe; Wherein,
The Single port of described snap joint is fixed by screw thread and explosion-proof tank, and is communicated with the first wellhead casing pipe; Another port is communicated with the second wellhead casing pipe.
9. wellhead casing pipe pressure release control device as claimed in claim 1, is characterized in that,
Described wellhead casing pipe pressure release control device also comprises display module, and described display module is electrically connected with described comparison circuit, for showing the force value from described pressure transmitter.
10. wellhead casing pipe pressure release control device as claimed in claim 9, is characterized in that,
Described display module comprises organic light-emitting diode (OLED) display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190601.3U CN204729054U (en) | 2015-03-31 | 2015-03-31 | A kind of wellhead casing pipe pressure release control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190601.3U CN204729054U (en) | 2015-03-31 | 2015-03-31 | A kind of wellhead casing pipe pressure release control device |
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| Publication Number | Publication Date |
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| CN204729054U true CN204729054U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520190601.3U Expired - Fee Related CN204729054U (en) | 2015-03-31 | 2015-03-31 | A kind of wellhead casing pipe pressure release control device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761622A (en) * | 2017-03-23 | 2017-05-31 | 西安长庆科技工程有限责任公司 | A kind of air foam flooding shaft oil production field device and its technique |
| CN113175309A (en) * | 2020-01-09 | 2021-07-27 | 中国石油天然气股份有限公司 | Well head safety pressure testing device |
| CN114961606A (en) * | 2022-06-02 | 2022-08-30 | 西南石油大学 | High-pressure gas well annular space automatic pressure relief and pressure compensation system based on PLC control and control method |
-
2015
- 2015-03-31 CN CN201520190601.3U patent/CN204729054U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761622A (en) * | 2017-03-23 | 2017-05-31 | 西安长庆科技工程有限责任公司 | A kind of air foam flooding shaft oil production field device and its technique |
| CN113175309A (en) * | 2020-01-09 | 2021-07-27 | 中国石油天然气股份有限公司 | Well head safety pressure testing device |
| CN114961606A (en) * | 2022-06-02 | 2022-08-30 | 西南石油大学 | High-pressure gas well annular space automatic pressure relief and pressure compensation system based on PLC control and control method |
| CN114961606B (en) * | 2022-06-02 | 2023-10-13 | 西南石油大学 | Automatic pressure relief and supplementing system for high-pressure gas well annulus based on PLC control and control method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20190331 |