CN214464090U - Real-time online equivalent reinjection device for overflow liquid of wellhead operation - Google Patents
Real-time online equivalent reinjection device for overflow liquid of wellhead operation Download PDFInfo
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- CN214464090U CN214464090U CN202120059594.9U CN202120059594U CN214464090U CN 214464090 U CN214464090 U CN 214464090U CN 202120059594 U CN202120059594 U CN 202120059594U CN 214464090 U CN214464090 U CN 214464090U
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Abstract
The utility model provides a real-time online equivalent reinjection device for spilled liquid in well operation, wherein a hydraulic loop system comprises a hydraulic oil pump, the hydraulic oil pump is connected with a hydraulic oil tank, an electric proportional pressure regulating valve, an electric proportional speed regulating valve and a hydraulic motor are all connected with the hydraulic oil pump, and the hydraulic motor is also connected with the hydraulic oil tank; the water injection loop system comprises a high-pressure water pump, the high-pressure water pump is connected with a water tank for containing the overflow liquid of the oil well, and a water injection pressure regulating valve and a water injection pressure sensor are connected with the high-pressure water pump; the hydraulic motor is connected with the high-pressure water pump, and the control system controls the operation of each part. The utility model discloses control system is according to the change of water injection pressure sensor, water tank level sensor isoparametric, and real-time on-line monitoring overflow water volume, the automatic input current who adjusts electric proportion air-vent valve, and electric proportion governing valve realizes the automatic reinjection function of real-time equivalent, can pour into the well into with well head overflow liquid equivalent constant voltage ground into oil well.
Description
Technical Field
The utility model relates to an oil exploration is equipped, concretely relates to real-time online equivalent reinjection device of wellhead operation overflow liquid.
Background
In the prior art, during the operation processes of oil field production, well logging, well testing and the like, wellhead overflowing liquid is inevitably generated, and phenomena of running, overflowing, dripping, leaking and the like exist, so that the peripheral environment of a well site is polluted. Especially, during the testing process of the water injection well, a large amount of wellhead overflowing liquid is generated. The existing treatment method is characterized in that firstly, a sewage tank is constructed on site, collected sewage is transported to a sewage treatment plant for centralized treatment, and the method wastes manpower and material resources and is easy to cause environmental pollution. Secondly, a simple reinjection device is used, and the high-pressure water pump is adopted to pressurize and inject the wellhead overflow liquid into the oil well again, so that the pollution to the well site is eliminated.
The conventional simple reinjection device mainly adopts a high-pressure water pump, and the overflow liquid of the wellhead operation is pressurized and then injected into a well under the power driving of a power takeoff (or a motor) of an automobile chassis. The device is mainly controlled by a liquid level meter in the water tank, and when the water level is higher than the upper limit, the water pump is started to inject water into the well. And when the water level is lower than the lower limit, the water pump is turned off, and water injection into the well is suspended. Although the device is simple in structure and convenient to operate, the automation degree is low, the water injection pressure fluctuation is large in the starting and stopping process of the high-pressure water pump, the sealing performance of the wellhead sealing device is easy to damage, and more wellhead overflowing liquid is generated. Meanwhile, when oil well test operation is carried out, the water injection pressure fluctuation is large, the test process can be interfered, and the test error is increased.
Disclosure of Invention
To the defect that current oil well water injection device exists, the utility model aims to solve the technical problem that a real-time online equivalent reinjection device of well head operation overflow liquid is provided, the device has real-time on-line monitoring, and real-time equivalent reinjection function can pour into the oil well into with well head overflow liquid equivalent constant voltage ground.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a real-time online equivalent reinjection device for spilled liquid in wellhead operation comprises a hydraulic loop system and a water injection loop system, wherein the hydraulic loop system comprises a hydraulic oil pump, the hydraulic oil pump is connected with a hydraulic oil tank, an electric proportional pressure regulating valve, an electric proportional speed regulating valve and a hydraulic motor are all connected with the hydraulic oil pump, and the hydraulic motor is also connected with the hydraulic oil tank; the water injection loop system comprises a high-pressure water pump, the high-pressure water pump is connected with a water tank containing oil well overflow liquid, and a water injection pressure regulating valve and a water injection pressure sensor are connected with the high-pressure water pump; the hydraulic motor is connected with the high-pressure water pump, and the control system controls the operation of each part.
And an oil return filter and a hydraulic radiator are arranged on a connecting pipeline between the hydraulic motor and the hydraulic oil tank.
And an oil absorption filter is arranged on a connecting pipeline between the hydraulic oil pump and the hydraulic oil tank.
And the electric proportional speed regulating valve is also connected with a hydraulic pressure gauge.
A water level sensor is arranged in the water tank.
The utility model adopts the above technical scheme design the real-time online equivalent reinjection device of wellhead operation overflow liquid, control system is according to the change of water injection pressure sensor, water tank level sensor isoparametric, and real-time on-line monitoring overflow water volume, the input current of automatic adjustment electric proportion air-vent valve, and electric proportion governing valve realizes the automatic reinjection function of real-time equivalent, can pour into the oil well into with wellhead overflow liquid equivalent constant voltage ground. The utility model discloses the well head when can also satisfying the operation such as use abnormal shape cable, conventional cable, steel wire is sealed, has replaced notes fat sealed, can keep the clean operation of environmental protection, can practice thrift a large amount of notes fat costs again.
Drawings
Fig. 1 shows the structure diagram of the real-time online equivalent reinjection device for the overflow liquid in the wellhead operation of the utility model.
Detailed Description
The following describes the real-time online equivalent refilling device for the overflow liquid in the wellhead operation with reference to the attached drawings.
The utility model discloses real-time online equivalent reinjection device of well head operation overflow liquid refers to fig. 1, including hydraulic circuit system and water injection return circuit system. The hydraulic loop system comprises a hydraulic oil pump 4, the hydraulic oil pump 4 is a variable pump with load sensitivity, the hydraulic oil pump 4 is connected with a hydraulic oil tank 1, and an oil absorption filter 2 is arranged on a connecting pipeline between the hydraulic oil pump 4 and the hydraulic oil tank 1. The electric proportional pressure regulating valve 3, the electric proportional speed regulating valve 5 and the hydraulic motor 7 are all connected with a hydraulic oil pump, and the electric proportional speed regulating valve 5 is also connected with a hydraulic pressure gauge 6. The hydraulic motor 7 is also connected to the hydraulic oil tank 1, and an oil return filter 14 and a hydraulic radiator 13 are provided on a connection line between the hydraulic motor 7 and the hydraulic oil tank 1. The water injection loop system comprises a high-pressure water pump 10, the high-pressure water pump 10 is connected with a water tank 12 for containing the overflow liquid of the oil well, and a water level sensor 11 is arranged in the water tank 12. The water injection pressure regulating valve 9 and the water injection pressure sensor 8 are connected with a high-pressure water pump 10. The hydraulic motor 7 of the hydraulic circuit system is connected to a high-pressure water pump 10 of the water injection circuit system. The utility model discloses each part operation is controlled by control system, and control system adopts high accuracy ECEP industry programmable controller, according to the change of water injection pressure sensor 8, level sensor 11 isoparametric, and real-time on-line monitoring overflow water volume, the input current of automatic adjustment electric proportion air-vent valve 3, electric proportion governing valve 5 realizes real-time equivalent automatic reinjection function.
The utility model discloses a working process does:
1. starting: the electric proportional speed regulating valve 5 is not electrified, the electric proportional pressure regulating valve 3 is not electrified, the hydraulic oil pump 4 is in an unloading state and does not output hydraulic oil, at the moment, the hydraulic motor 7 does not rotate, and the high-pressure water pump 10 does not work, so that the heating of a hydraulic system can be reduced, and the energy consumption is reduced;
2. the work is as follows: the electric proportional speed regulating valve 3 is switched on (maximum flow), the hydraulic oil pump 4 outputs hydraulic oil, and the high-pressure water pump 10 starts to work:
(1) when the pressure sensed by the water injection pressure sensor 8 is lower than the preset pressure, the programmable controller automatically increases the input current of the electric proportional pressure regulating valve 3, the pressure of the pressure regulating valve rises, the displacement of the hydraulic oil pump 4 is increased under the action of the built-in load sensitive valve, the pressure of the hydraulic loop system rises, and the water injection pressure of the high-pressure water pump 10 rises correspondingly. On the contrary, the programmable controller automatically reduces the input current of the electric proportional pressure regulating valve 3, and the water injection pressure of the high-pressure water pump 10 is correspondingly reduced. Thus, the dynamic balance of the water injection pressure can be realized.
(2) When the water level sensor 11 of the water tank 12 senses that the water level of the water tank 12 is lower than the preset water level and the overflow water amount is smaller than the injected water amount, the programmable controller automatically increases the input current of the electric proportional speed regulating valve 5, the flow of the speed regulating valve is increased, the displacement of the hydraulic oil pump 4 is increased under the action of the built-in load sensitive pump valve, the rotating speed of the high-pressure water pump 10 is increased, the water injection amount is increased, and the water level of the water tank 12 is correspondingly reduced. On the contrary, the programmable controller automatically reduces the input current of the electric proportional speed regulating valve 5, the rotating speed of the high-pressure water pump 10 is reduced, the water injection quantity is reduced, and the water level can be automatically increased. Thus, the dynamic balance of the water injection flow can be realized.
3. Stopping the machine: the electric proportional speed regulation 5 is powered off, the electric proportional pressure regulation valve 3 is powered off, the displacement of the hydraulic oil pump 4 is nearly zero under the action of the built-in load sensitive valve, the oil pump is in an unloading state, and the high-pressure water pump 10 stops rotating.
Claims (5)
1. A real-time online equivalent reinjection device of well head operation overflow liquid comprises a hydraulic loop system and a water injection loop system, and is characterized in that the hydraulic loop system comprises a hydraulic oil pump, the hydraulic oil pump is connected with a hydraulic oil tank, an electric proportional pressure regulating valve, an electric proportional speed regulating valve and a hydraulic motor are all connected with the hydraulic oil pump, and the hydraulic motor is also connected with the hydraulic oil tank; the water injection loop system comprises a high-pressure water pump, the high-pressure water pump is connected with a water tank containing oil well overflow liquid, and a water injection pressure regulating valve and a water injection pressure sensor are connected with the high-pressure water pump; the hydraulic motor is connected with the high-pressure water pump, and the control system controls the operation of each part.
2. The real-time online equivalent reinjection device of well head operation overflow liquid of claim 1, wherein a connection line between said hydraulic motor and hydraulic tank is provided with an oil return filter and a hydraulic radiator.
3. The real-time online equivalent reinjection device of well head operation overflow liquid of claim 1, wherein an oil absorption filter is arranged on a connecting line between the hydraulic oil pump and the hydraulic oil tank.
4. The device for real-time on-line equal-quantity reinjection of overflow liquid in wellhead operation according to claim 1, wherein the electric proportional speed regulating valve is further connected with a hydraulic pressure gauge.
5. The apparatus of claim 1, wherein a water level sensor is disposed in the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120059594.9U CN214464090U (en) | 2021-01-11 | 2021-01-11 | Real-time online equivalent reinjection device for overflow liquid of wellhead operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120059594.9U CN214464090U (en) | 2021-01-11 | 2021-01-11 | Real-time online equivalent reinjection device for overflow liquid of wellhead operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214464090U true CN214464090U (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120059594.9U Active CN214464090U (en) | 2021-01-11 | 2021-01-11 | Real-time online equivalent reinjection device for overflow liquid of wellhead operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214464090U (en) |
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2021
- 2021-01-11 CN CN202120059594.9U patent/CN214464090U/en active Active
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