Mixed-phase online continuous metering device

Abstract

The utility model provides a mixed-phase online continuous metering device. The mixed-phase online continuous metering device comprises a gathering pipe, a discharging header pipe is fixedly installed at the bottom of the gathering pipe, a plurality of oil well discharging connecting pipes are fixedly installed on the outer wall of one side of the gathering pipe, a gas-liquid separator is arranged at the top of the gathering pipe, and a gas-liquid separator is arranged at the bottom of the gathering pipe. A separator inlet pipe, a separator gas phase outlet pipe and a separator liquid phase outlet pipe are fixedly installed on the gas-liquid separator, a multi-way connecting pipe is fixedly installed at one end of the separator inlet pipe, and metering feeding pipes are fixedly installed at the tops of the multiple oil well discharging connecting pipes; the top ends of the metering feeding pipes are fixedly connected with a multi-way connecting pipe, and a liquid phase flow meter is fixedly mounted at one end of the separator liquid phase outlet pipe. The mixed-phase on-line continuous metering device provided by the utility model has the advantages that gas-liquid metering can be carried out on a plurality of oil well oil outlet pipelines, the switching is convenient, and the metering cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum exploitation metering, and in particular relates to a mixed phase online continuous metering device. Background Art

[0002] In the process of oil well production management, in order to monitor the dynamic changes of oil well production flow, it is necessary to install online flow meters on the production pipeline to measure the production of oil, gas and water produced by the oil well in real time, obtain real-time data on the continuous production of the oil well, and use it to dynamically monitor oil well production and optimize production processes.

[0003] In the related technology, an online self-calibration gas-liquid two-phase metering device is disclosed, including a gas-liquid separator, a gas-liquid two-phase fluid inlet pipe connected to the interior of the gas-liquid separator is provided at a position near the top of the side of the gas-liquid separator, a gas-liquid two-phase flowmeter is provided on the gas-liquid two-phase fluid inlet pipe, a liquid level gauge is provided on the side of the gas-liquid separator through a connecting pipeline, a gas phase pipeline connected to the interior of the gas-liquid separator is provided at the top of the gas-liquid separator, a throttling device with a positive and negative pressure switch is provided on the gas phase pipeline, a liquid phase pipeline connected to the interior of the gas-liquid separator is provided at the bottom of the gas-liquid separator, a manual switch valve is provided on the liquid phase pipeline, an end of the liquid phase pipeline away from the gas-liquid separator is connected to an end of the gas phase pipeline away from the gas-liquid separator, and a gas-liquid two-phase fluid outlet pipe connected to the liquid phase pipeline and the gas phase pipeline respectively is provided at the connection point between the liquid phase pipeline and the gas phase pipeline. The structure is simple and can realize online manual calibration.

[0004] However, there are still some shortcomings in the above structure. When the device measures the flow of gas and liquid phases, it can only measure the oil output management of a single oil well. When multiple oil wells are exploited at the same time, multiple metering devices need to be installed on the oil output pipelines of multiple oil wells, which increases the metering cost.

[0005] Therefore, it is necessary to provide a new mixed-phase online continuous metering device to solve the above technical problems. Utility Model Content

[0006] The technical problem solved by the utility model is to provide a mixed phase online continuous metering device which can measure gas and liquid on oil outlet pipelines of multiple oil wells, is easy to switch and reduces metering costs.

[0007] In order to solve the above technical problems, the utility model provides a mixed-phase online continuous metering device comprising: a collecting pipe, a discharge main pipe is fixedly installed at the bottom of the collecting pipe, a plurality of oil well discharge connecting pipes are fixedly installed on the outer wall of one side of the collecting pipe, a gas-liquid separator is arranged on the top of the collecting pipe, a separator inlet pipe, a separator gas phase outlet pipe and a separator liquid phase outlet pipe are fixedly installed on the gas-liquid separator, a multi-way connecting pipe is fixedly installed on one end of the separator inlet pipe, a metering feed pipe is fixedly installed on the top of the plurality of oil well discharge connecting pipes, the tops of the plurality of metering feed pipes are fixedly connected to the multi-way connecting pipe, a liquid phase flowmeter is fixedly installed on one end of the liquid phase outlet pipe of the separator, a liquid phase reflux pipe is fixedly installed on the liquid phase flowmeter, a gas phase flowmeter is fixedly installed on one end of the gas phase outlet pipe of the separator, a gas phase reflux pipe is fixedly installed on the gas phase flowmeter, the bottom end of the gas phase reflux pipe is fixedly connected to the liquid phase reflux pipe, and a reflux main pipe is fixedly installed on one end of the liquid phase reflux pipe.

[0008] As a further solution of the utility model, a first solenoid valve is fixedly installed on each of the plurality of metering feed pipes, and a second solenoid valve is fixedly installed on each of the plurality of oil well discharge connecting pipes.

[0009] As a further solution of the utility model, a reflux connecting pipe is fixedly installed on the top of the discharge main pipe, the top end of the reflux connecting pipe is fixedly connected to the reflux main pipe, and a check valve is fixedly installed on the reflux connecting pipe.

[0010] As a further solution of the utility model, a plurality of the oil well discharge connecting pipes are connected to the collecting pipe in a straight line at equal intervals.

[0011] As a further solution of the utility model, a first flange is fixedly installed on one end of the plurality of oil well discharge connecting pipes, and a second flange is fixedly installed on one end of the discharge main pipe.

[0012] Compared with the related art, the mixed phase online continuous metering device provided by the utility model has the following beneficial effects:

[0013] 1. The utility model is provided with a gas-liquid separator, a multi-way connecting pipe, a liquid phase flowmeter and a gas phase flowmeter, so that the gas and liquid can be separated and the gas-liquid two-phase flow can be measured;

[0014] 2. The utility model provides a first solenoid valve and a second solenoid valve, so that multiple detection oil wells can be switched according to detection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1A schematic diagram of the three-dimensional structure of the mixed-phase online continuous metering device provided by the utility model;

[0017] Figure 2 A schematic diagram of the first partial structure of the mixed-phase online continuous metering device provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the second partial structure of the mixed-phase online continuous metering device provided by the utility model.

[0019] In the figure: 1. Collection pipe; 2. Discharge main pipe; 3. Oil well discharge connecting pipe; 4. Gas-liquid separator; 5. Separator inlet pipe; 6. Separator gas phase outlet pipe; 7. Separator liquid phase outlet pipe; 8. Multi-way connecting pipe; 9. Metering feed pipe; 10. Liquid phase flowmeter; 11. Liquid phase reflux pipe; 12. Gas phase flowmeter; 13. Gas phase reflux pipe; 14. Reflux main pipe; 15. First solenoid valve; 16. Second solenoid valve; 17. Reflux connecting pipe; 18. Check valve. DETAILED DESCRIPTION

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 ,in, Figure 1 A schematic diagram of the three-dimensional structure of the mixed-phase online continuous metering device provided by the utility model; Figure 2 A schematic diagram of the first partial structure of the mixed-phase online continuous metering device provided by the utility model; Figure 3 The second partial structural diagram of the mixed-phase online continuous metering device provided by the utility model. The mixed-phase online continuous metering device comprises: a collecting pipe 1, a discharge main pipe 2 is fixedly installed at the bottom of the collecting pipe 1, a plurality of oil well discharge connecting pipes 3 are fixedly installed on the outer wall of one side of the collecting pipe 1, a gas-liquid separator 4 is arranged on the top of the collecting pipe 1, a separator inlet pipe 5, a separator gas phase outlet pipe 6 and a separator liquid phase outlet pipe 7 are fixedly installed on the gas-liquid separator 4, a multi-way connecting pipe 8 is fixedly installed at one end of the separator inlet pipe 5, and a metering feed pipe 9 is fixedly installed on the top of the plurality of oil well discharge connecting pipes 3. The top ends of the plurality of metering feed pipes 9 are fixedly connected to the multi-way connecting pipe 8, a liquid phase flowmeter 10 is fixedly installed at one end of the liquid phase outlet pipe 7 of the separator, a liquid phase reflux pipe 11 is fixedly installed on the liquid phase flowmeter 10, a gas phase flowmeter 12 is fixedly installed at one end of the gas phase outlet pipe 6 of the separator, a gas phase reflux pipe 13 is fixedly installed on the gas phase flowmeter 12, the bottom end of the gas phase reflux pipe 13 is fixedly connected to the liquid phase reflux pipe 11, and a reflux main pipe 14 is fixedly installed at one end of the liquid phase reflux pipe 11.

[0021] like Figure 2As shown, a first solenoid valve 15 is fixedly installed on each of the plurality of metering feed pipes 9 , and a second solenoid valve 16 is fixedly installed on each of the plurality of oil well discharge connecting pipes 3 .

[0022] like Figure 2 As shown, a reflux connecting pipe 17 is fixedly installed on the top of the discharge main pipe 2 , the top end of the reflux connecting pipe 17 is fixedly connected to the reflux main pipe 14 , and a check valve 18 is fixedly installed on the reflux connecting pipe 17 .

[0023] like Figure 2 As shown, a plurality of the oil well discharge connecting pipes 3 are connected to the collecting pipe 1 in a straight line and at equal intervals.

[0024] like Figure 1 As shown, a first flange is fixedly installed at one end of each of the plurality of oil well discharge connecting pipes 3 , and a second flange is fixedly installed at one end of the discharge main pipe 2 .

[0025] The working principle of the mixed phase online continuous metering device provided by the utility model is as follows:

[0026] When in use, close the second solenoid valve 16 on the first oil well discharge connection pipe 3, open the first solenoid valve 15 on the first metering feed pipe 9, so that the gas-liquid mixture produced in the oil field connected to the first oil well discharge connection pipe 3 enters the multi-way connection pipe 8, and enters the gas-liquid separator 4 through the separator inlet pipe 5. After the gas-liquid separator 4 performs gas-liquid separation, it is introduced into the gas phase flowmeter 12 and the liquid phase flowmeter 10 through the separator gas phase outlet pipe 6 and the separator liquid phase outlet pipe 7 respectively. The gas phase flowmeter 12 meters the gas phase, and the liquid phase flowmeter 10 meters the liquid phase. Subsequently, the gas and liquid flow into the reflux main pipe 14 through the liquid phase reflux pipe 11 and the reflux main pipe 14, and then flow back into the discharge main pipe 2 through the reflux main pipe 14 and the reflux connection pipe 17, thereby completing the metering of the gas-liquid mixture produced in the oil field;

[0027] If metering is required for the second oil field, open the second solenoid valve 16 on the first oil well discharge connecting pipe 3, close the first solenoid valve 15 on the first metering feed pipe 9, and then close the second solenoid valve 16 on the first oil well discharge connecting pipe 3, open the first solenoid valve 15 on the first metering feed pipe 9, and then the gas-liquid two-phase detection can be carried out on the second oil field.

[0028] It should be noted that the equipment structure and drawings of the utility model mainly describe the principle of the utility model. In terms of the technology of the design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described. On the premise that the technical personnel in this field understand the principle of the above utility model, the details of the power mechanism, power supply system and control system can be clearly known. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by the technical personnel in this field;

[0029] The standard parts used therein can all be purchased from the market and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the structures and principles of the components known to technical personnel in this field can be known by these technical personnel through technical manuals or through conventional experimental methods.

[0030] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A mixed phase online continuous metering device, characterized in that: include: A collecting pipe, a discharge main pipe is fixedly installed at the bottom of the collecting pipe, a plurality of oil well discharge connecting pipes are fixedly installed on the outer wall of one side of the collecting pipe, a gas-liquid separator is arranged on the top of the collecting pipe, a separator inlet pipe, a separator gas phase outlet pipe and a separator liquid phase outlet pipe are fixedly installed on the gas-liquid separator, a multi-way connecting pipe is fixedly installed on one end of the separator inlet pipe, a metering feed pipe is fixedly installed on the top of the plurality of oil well discharge connecting pipes, the top ends of the plurality of metering feed pipes are fixedly connected to the multi-way connecting pipe, a liquid phase flowmeter is fixedly installed on one end of the separator liquid phase outlet pipe, a liquid phase reflux pipe is fixedly installed on the liquid phase flowmeter, a gas phase flowmeter is fixedly installed on one end of the separator gas phase outlet pipe, a gas phase reflux pipe is fixedly installed on the gas phase flowmeter, the bottom end of the gas phase reflux pipe is fixedly connected to the liquid phase reflux pipe, and a reflux main pipe is fixedly installed on one end of the liquid phase reflux pipe.

2. The mixed phase online continuous metering device according to claim 1, characterized in that: A first solenoid valve is fixedly installed on each of the plurality of metering feed pipes, and a second solenoid valve is fixedly installed on each of the plurality of oil well discharge connecting pipes.

3. The mixed phase online continuous metering device according to claim 1, characterized in that: A reflux connecting pipe is fixedly installed on the top of the discharge main pipe, the top end of the reflux connecting pipe is fixedly connected to the reflux main pipe, and a check valve is fixedly installed on the reflux connecting pipe.

4. The mixed phase online continuous metering device according to claim 1, characterized in that: A plurality of the oil well discharge connecting pipes are connected to the collecting pipe in a straight line at equal intervals.

5. The mixed phase online continuous metering device according to claim 1, characterized in that: A first flange is fixedly mounted on one end of each of the plurality of oil well discharge connection pipes, and a second flange is fixedly mounted on one end of the discharge main pipe.

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