CN209558041U - A metering device for pressure drop and back pressure of well group - Google Patents

Abstract

The utility model discloses a metering device for reducing back pressure of a well group, which comprises a metering unit for reducing back pressure, a data acquisition unit, a real-time monitoring unit, a data transmission unit, a system control unit, an auxiliary unit and a control cabinet. The unit includes a heating furnace, a tipping bucket meter, a booster pump, an oil-water separator, and a dosing device. The real-time monitoring unit includes a flow sensor, a temperature sensor, a pressure sensor, a liquid level sensor, a current sensor, a voltage sensor, and a power sensor. The system control unit includes CPU, power supply module, I/O module, Bthernet and RS485/232 communication interface module. The utility model is beneficial to be used in oil wells with high back pressure and pressure boosting by reducing the back pressure metering unit, so that the equipment can reduce the well head pressure, increase the oil delivery pressure, and achieve the purpose of increasing production of the oil well. , Sampling, gas measurement, pressure measurement, natural gas recycling, metering and display direct reading and other functions.

Description

A metering device for pressure drop and back pressure of well group

technical field

The utility model relates to the technical field of oil transportation equipment, in particular to a metering device for reducing back pressure of a well group.

Background technique

In the oil production plants of Changqing Oilfield, due to various reasons such as the well group is far away from the booster station and metering station, the oil pipeline is long, and the wax deposition in the oil well is relatively serious, the oil production wells have been in high back pressure (1.5-3MPa) production state for a long time , has seriously affected the normal production of the oil well. When the weather is cold in winter, the back pressure can reach 6-7MPa. Under such conditions, the oil well can hardly produce normally.

The external transportation process of the well group is generally a double-pipeline process, that is, one metering pipeline and one mixed transportation pipeline. During oil transportation in winter, the two pipelines must ensure uninterrupted oil transportation, as long as one pipeline stops oil transportation for one hour , It will cause pipeline blockage, waste effective resources, increase production costs, and increase labor intensity of workers.

Therefore, it is necessary to invent a metering device for pressure reduction of well groups to solve the above problems.

Utility model content

Aiming at the deficiencies of the prior art, the utility model provides a metering device for reducing the back pressure of the well group. Through the metering unit for reducing the back pressure, it is beneficial to be used in oil wells with high back pressure and need to be boosted, so that the device has the ability to reduce the wellhead pressure. , improve the oil delivery pressure, achieve the purpose of oil well production increase, and also have the functions of wellhead sealing oil measurement, sampling, gas measurement, pressure measurement, natural gas recovery and utilization, metering and display direct reading, etc., to solve the problems raised in the above background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a metering device for pressure reduction of well group, including a pressure reduction metering unit, a data acquisition unit, a real-time monitoring unit, a data transmission unit, a system control unit, an auxiliary unit and a control unit Cabinet, the pressure drop metering unit includes a heating furnace, a bucket meter, a booster pump, an oil-water separator and a dosing device, and the real-time monitoring unit includes a flow sensor, a temperature sensor, a pressure sensor, a liquid level sensor, a current sensor , a voltage sensor and a power sensor, the system control unit includes a CPU, a power supply module, an I/O module, Bthernet and a RS485/232 communication interface module, the system control unit is located inside the control cabinet, and the auxiliary unit includes a ball receiving Devices, oil pumps, frequency converters, furnace controllers.

Preferably, the dump meter, the booster pump, the oil-water separator and the dosing device are all arranged behind the outlet of the heating furnace, the dump meter is arranged on one side of the oil-water separator, and the oil-water separator and the dump meter A crude oil inlet is connected between them, and a crude oil outlet is arranged near the bottom of the tipping bucket meter.

Preferably, one side of the heating furnace is provided with an inlet pipe of the mixed transportation pipeline, an outlet pipe of the mixed transportation pipeline is connected between the heating furnace and the oil-water separator, and the inlet pipe of the mixed transportation pipeline and the outlet pipe of the mixed transportation pipeline An oil-mixing pipeline bypass is provided, and balls are arranged between the two ends of the oil-mixing pipeline bypass.

Preferably, the oil-water separator includes an exhaust port and a sewage outlet, a drain pipe is connected between one side of the oil-water separator and the booster pump, and a drain port is provided on the other side of the booster pump, so A three-way valve is connected between the two ends of the discharge pipe, and the crude oil outlet of the tipping bucket meter is connected with the three-way valve.

Preferably, the dosing device includes a calibration tank, a dosing tank and a water analyzer, one side of the calibration tank is connected to the oil-water separator, the other side of the calibration tank is connected to the dosing tank, and the water analyzer Set inside the calibration tank.

Preferably, a filter is provided between the outlet pipe of the mixed transportation pipeline and both ends of the discharge pipe, and the filter on the discharge pipe is located on the right side of the three-way valve.

Preferably, a liquid level sensor and a flow sensor are arranged inside the tipping bucket meter, a voltage sensor, a current sensor and a power sensor are arranged in the control box of the booster pump, and a pressure sensor and a pressure sensor are arranged at the crude oil inlet and the crude oil outlet. Temperature Sensor.

Preferably, the output ends of the flow sensor, temperature sensor, pressure sensor, liquid level sensor, current sensor, voltage sensor and power sensor are all connected to the data acquisition unit, and the output end of the data acquisition unit is connected to the data transmission unit and the real-time The monitoring unit is connected, and the output end of the data transmission unit is connected with the system control unit.

Technical effect and advantage of the present utility model:

1. By reducing the back pressure metering unit, it is beneficial to be used in oil wells with high back pressure and pressure boosting, so that the equipment can reduce wellhead pressure, increase oil delivery pressure, and achieve the purpose of increasing production of oil wells. Sampling, gas measurement, pressure measurement, natural gas recovery and utilization, metering and display direct reading and other functions.

2. Through the combination of various system units, it is beneficial to make the device have the advantages of high degree of automation, high test accuracy, flexible handling, convenient installation, compact structure, safety and reliability, and easy operation, and effectively realize the integrated structure.

Description of drawings

Fig. 1 is a structural schematic diagram of the metering unit for reducing back pressure of the present utility model;

Fig. 2 is a top view of the structure of the metering unit for reducing back pressure of the present utility model;

Fig. 3 is the left view of the structure of the tipping bucket meter of the present invention;

Fig. 4 is the overall structure flowchart of the utility model;

Fig. 5 is the overall structural system diagram of the utility model.

In the figure: 1. Back pressure reduction metering unit; 101, heating furnace; 102, tipping bucket meter; 103, booster pump; 104, oil-water separator; 105, dosing device; 106, crude oil import; 107, crude oil export; 108. Inlet pipe of mixed transportation pipeline; 109. Outlet pipe of mixed transportation pipeline; 110. Bypass of mixed oil pipeline; 111. Ball collector; 112. Exhaust port; 113. Sewage outlet; Through valve; 116, calibration tank; 117, dosing tank; 118, moisture analyzer; 119, filter; 2, data acquisition unit; 3, real-time monitoring unit; 4, data transmission unit; 5, system control unit; 6 , Auxiliary unit; 7, Control cabinet.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Example 1:

According to a kind of well group back pressure reduction metering device shown in Fig. The control cabinet 7, through the combination of various system units, is conducive to the advantages of high automation, high test accuracy, flexible handling, convenient installation, compact structure, safety and reliability, and easy operation, and effectively realizes the integrated structure. The pressure reduction metering unit 1 includes a heating furnace 101, a bucket meter 102, a booster pump 103, an oil-water separator 104, and a dosing device 105, and the real-time monitoring unit 3 includes a flow sensor, a temperature sensor, a pressure sensor, and a liquid level sensor , current sensor, voltage sensor and power sensor, described system control unit 5 comprises CPU, power supply module, I/O module, Bthernet and RS485/232 communication interface module, described system control unit 5 is positioned at control cabinet 7 internal settings, so The above-mentioned auxiliary unit 6 includes a ball collector 111, an oil delivery pump, a frequency converter, and a heating furnace controller. By reducing the back pressure metering unit 1, it is beneficial to use in oil wells with high back pressure and need to be boosted, so that the equipment has the ability to reduce wellhead pressure. , to increase the oil delivery pressure, to achieve the purpose of increasing the production of oil wells, and also have the functions of wellhead sealing oil measurement, sampling, gas measurement, pressure measurement, natural gas recovery and utilization, metering and display direct reading, etc.

Further, in the above technical solution, the tipping bucket meter 102, the booster pump 103, the oil-water separator 104 and the dosing device 105 are all located behind the outlet of the heating furnace 101, and the tipping bucket meter 102 is located at the oil-water separator 104 One side is provided, and a crude oil inlet 106 is connected between the oil-water separator 104 and the tipping bucket meter 102, and a crude oil outlet 107 is arranged near the bottom of the tipping bucket meter 102, which is conducive to transporting the separated crude oil through the crude oil inlet 106 to Inside the tipping bucket meter 102, the number of buckets of the tipping bucket meter 102 is accumulated and recorded, and the calibrated value of each tipping bucket weight is effectively converted to the output of a single well;

Further, in the above technical solution, the inlet pipe 108 of the mixed transportation pipeline is provided on one side of the heating furnace 101, and the outlet pipe 109 of the mixed transportation pipeline is connected between the heating furnace 101 and the oil-water separator 104. An oil mixing pipeline bypass 110 is provided between the pipeline inlet pipe 108 and the mixing pipeline outlet pipe 109, and a ball collector 111 is arranged between the two ends of the oil mixing pipeline bypass 110. Facilitate the cleaning of pipelines;

Further, in the above technical solution, the oil-water separator 104 includes an exhaust port 112 and a sewage outlet 113, and a drain pipe 114 is connected between one side of the oil-water separator 104 and the booster pump 103, and the booster pump 103 is connected to a discharge pipe 114. The other side of the pressure pump 103 is provided with a liquid discharge port, and a three-way valve 115 is connected between the two ends of the liquid discharge pipe 114. The three-way valve 115 is provided to facilitate the export of the crude oil outlet 107 together with the mixed crude oil. The crude oil outlet 107 of the tipping bucket meter 102 is connected with a three-way valve 115;

Further, in the above technical solution, the dosing device 105 includes a calibration tank 116, a dosing tank 117 and a moisture analyzer 118, one side of the calibration tank 116 is connected to the oil-water separator 104, and the other side of the calibration tank 116 is One side is connected to the dosing tank 117, the water content analyzer 118 is located inside the calibration tank 116, and the dosing device 105 is provided to facilitate the addition of medicines and detection for the oil-water separator 104 during the separation process of mixed oil Water content, so as to achieve better separation effect;

Further, in the above technical solution, a filter 119 is provided between the outlet pipe 109 of the mixed pipeline and both ends of the discharge pipe 114, and the filter 119 on the discharge pipe 114 is located on the right side of the three-way valve 115. side setting;

Further, in the above technical solution, the tipping bucket meter 102 is provided with a liquid level sensor and a flow sensor, the control box of the booster pump 103 is provided with a voltage sensor, a current sensor and a power sensor, and the crude oil inlet 106 The crude oil outlet 107 is equipped with a pressure sensor and a temperature sensor, through the flow sensor, temperature sensor, pressure sensor, liquid level sensor, current sensor, voltage sensor and power sensor in the real-time monitoring unit 3 to the data of the back pressure metering unit 1 Carry out centralized collection and monitoring, and control the state of flow, temperature, pressure, liquid level, circuit, power supply and power in the pressure drop metering unit 1, so as to realize digital management;

Further, in the above technical solution, the output terminals of the flow sensor, temperature sensor, pressure sensor, liquid level sensor, current sensor, voltage sensor and power sensor are all connected to the data acquisition unit 2, and the data acquisition unit 2 The output end is connected with the data transmission unit 4 and the real-time monitoring unit 3, and the output end of the data transmission unit 4 is connected with the system control unit 5;

Further, in the above technical solution, the model of the flow sensor is set to HG-HW8220, the model of the temperature sensor is set to DS18B20, the model of the pressure sensor is set to PTG501, and the model of the liquid level sensor is set to L-DP601, the model of the current sensor is set to HKA-F2, the model of the voltage sensor is set to XC6119N21ANR-G, and the model of the power sensor is set to L6599D.

The working principle of the utility model:

Referring to the accompanying drawings 1-4 of the specification, the tipping bucket meter 102, the booster pump 103, the oil-water separator 104 and the dosing device 105 are all installed behind the heating furnace 101, and the oil from the well group enters the heating furnace through the inlet pipe 108 of the mixing pipeline. Inside 101, use the heating furnace 101 to heat the mixed oil, reduce the viscosity of the mixed oil, reduce the large resistance generated during the transmission of the mixed oil, and transfer the heated mixed oil to the inside of the oil-water separator 104 through the outlet pipe 109 of the mixed transportation pipeline , through the oil-water separator 104, the gas is separated out to the upper space of the oil-water separator 104, when the gas containing small particles of crude oil passes through the upper part of the oil-water separator 104, the small particles of crude oil are adsorbed, condensed into liquid and flow to the oil-water separator 104 In the lower space, the crude oil in the lower space is pressurized by the booster pump 103 to be collected and transported to the oil pipeline network, and the separated gas is discharged into the metering station for recycling through the exhaust button, and the separated crude oil is transported through the crude oil inlet 106 To the inside of the tipping bucket meter 102, the number of buckets of the tipping bucket meter 102 is accumulated and recorded, and the calibrated value of each tipping bucket weight is effectively converted to the single well production, and through the tipping bucket meter 102, the self-separated gas is used as the power source. The crude oil is driven by the separated gas into the crude oil outlet 107 and exported together with the mixed crude oil;

Referring to the accompanying drawing 5 of the specification, when the device is in use, the flow sensor, temperature sensor, pressure sensor, liquid level sensor, current sensor, voltage sensor and power sensor in the real-time monitoring unit 3 are used to control the pressure drop metering unit 1. The data is collected and monitored centrally, and the operating data is sent to the system control unit 5 through the data transmission unit 4. The system control unit 5 performs data communication and accepts the control instructions of the upper system, so as to control the ball collection in the auxiliary unit 6. The device 111, oil pump, frequency converter, and heating furnace controller are used to control the state of flow, temperature, pressure, liquid level, circuit, power supply, and power in the back pressure metering unit 1, thereby realizing digital management.

Finally, it should be noted that: the above is only a preferred embodiment of the utility model, and is not intended to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art , it can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model, All should be included within the protection scope of the present utility model.

Claims (8)

1. A well group drop-back pressure metering device, comprising a drop-back pressure metering unit (1), a data acquisition unit (2), a real-time monitoring unit (3), a data transmission unit (4), a system control unit (5), Auxiliary unit (6) and control cabinet (7), characterized in that: the pressure drop metering unit (1) includes a heating furnace (101), a tipping bucket meter (102), a booster pump (103), an oil-water separator (104) and dosing device (105), described real-time monitoring unit (3) comprises flow sensor, temperature sensor, pressure sensor, liquid level sensor, current sensor, voltage sensor and power sensor, described system control unit (5) Including CPU, power supply module, I/O module, Bthernet and RS485/232 communication interface modules, the system control unit (5) is located inside the control cabinet (7), and the auxiliary unit (6) includes a ball collector (111 ), oil pump, frequency converter, heating furnace controller. 2. A kind of well group drop-back pressure metering device according to claim 1, characterized in that: said tipping bucket meter (102), booster pump (103), oil-water separator (104) and dosing device ( 105) are all arranged after the outlet of the heating furnace (101), and the dump meter (102) is arranged on one side of the oil-water separator (104), and the oil-water separator (104) is connected to the dump meter (102) There is a crude oil inlet (106), and the tipping bucket meter (102) is provided with a crude oil outlet (107) near the bottom. 3. The metering device for pressure reduction of well group according to claim 1, characterized in that: the inlet pipe (108) of the mixed transportation pipeline is arranged on one side of the heating furnace (101), and the heating furnace (101) A mixed pipeline outlet pipe (109) is connected to the oil-water separator (104), and a mixed oil pipeline bypass (110) is arranged between the mixed pipeline inlet pipe (108) and the mixed pipeline outlet pipe (109). ), a ball collector (111) is arranged between the two ends of the oil mixing pipeline bypass (110). 4. The metering device for pressure reduction and back pressure of a well group according to claim 1, characterized in that: the oil-water separator (104) includes an exhaust port (112) and a sewage outlet (113), and the oil-water separator A discharge pipe (114) is connected between one side of (104) and the booster pump (103), the other side of the booster pump (103) is provided with a discharge port, and the two ends of the discharge pipe (114) A three-way valve (115) is connected between them, and the crude oil outlet (107) of the tipping bucket meter (102) is connected with the three-way valve (115). 5. A metering device for reducing back pressure in a well group according to claim 1, characterized in that: the dosing device (105) comprises a calibration tank (116), a dosing tank (117) and a water content analyzer (118 ), one side of the calibration tank (116) is connected with the oil-water separator (104), the other side of the calibration tank (116) is connected with the dosing tank (117), and the water content analyzer (118) is located in the calibration tank (116) INTERNAL SETTINGS. 6. The metering device for reducing back pressure of a well group according to claim 3, characterized in that: a filter ( 119), the filter (119) on the drain pipe (114) is located on the right side of the three-way valve (115). 7. The metering device for reducing back pressure of a well group according to claim 2, characterized in that: a liquid level sensor and a flow sensor are arranged inside the tipping bucket meter (102), and the booster pump (103) The control box is provided with a voltage sensor, a current sensor and a power sensor, and the crude oil inlet (106) and the crude oil outlet (107) are both provided with a pressure sensor and a temperature sensor. 8. The metering device for pressure reduction of a well group according to claim 1, characterized in that: the output terminals of the flow sensor, temperature sensor, pressure sensor, liquid level sensor, current sensor, voltage sensor and power sensor are all Connect with data acquisition unit (2), the output end of described data acquisition unit (2) is connected with data transmission unit (4) and real-time monitoring unit (3), the output end of described data transmission unit (4) is connected with system control Unit (5) is connected.