CN218376434U - Simple and easy applicable oil gas water three-phase flow metering device - Google Patents
Simple and easy applicable oil gas water three-phase flow metering device Download PDFInfo
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- CN218376434U CN218376434U CN202222839677.7U CN202222839677U CN218376434U CN 218376434 U CN218376434 U CN 218376434U CN 202222839677 U CN202222839677 U CN 202222839677U CN 218376434 U CN218376434 U CN 218376434U
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Abstract
The utility model discloses a simple and easy suitable oil gas water three-phase flow metering device, including cyclone and flow computer, the cyclone top is equipped with the level gauge that extends to cyclone inside, the cyclone side is equipped with differential pressure transmitter, the cyclone side is equipped with the fluid income pipe rather than inside intercommunication, the cyclone bottom is equipped with the fluid exit tube rather than inside intercommunication, the position that the cyclone side is close to the top is equipped with the gas phase pipeline rather than inside intercommunication, be equipped with gas flowmeter on the gas phase pipeline, gas phase pipeline and fluid exit tube intercommunication, the fluid is gone into the pipe and is equipped with the bypass line that both ends were gone into pipe and fluid exit tube intercommunication with the fluid respectively with the fluid exit tube, level gauge, differential pressure transmitter and gas flowmeter are connected with flow computer electrical connection respectively. The utility model discloses the cooperation of each subassembly of metering device is used, can realize that gas-liquid two-phase flow state measures and oily water-containing state measures.
Description
Technical Field
The utility model belongs to heterogeneous flow measurement field, concretely relates to simple and easy suitable oil gas water three-phase flow metering device.
Background
At present, with the tightening layout of national energy safety strategy, the development of oil and gas fields is also carried out in the wild cockamador. Wherein, old oil field ground equipment is also actively innovated and reformed, improves the automation level. However, most of old oil fields have problems of unstable yield, more interference factors in measurement and the like in single well measurement, and various measured data have large errors, and especially the measurement of the water content of single well oil is a difficult problem which always troubles oil extraction plants. Therefore, a multiphase flow metering device for single wells and metering stations with high cost performance and high reliability is urgently needed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that just to the not enough of above-mentioned prior art, according to the characteristics in old oil field, provide a simple and easy suitable oil gas water three-phase flow metering device, the cooperation of each subassembly of this metering device is used, can realize gas-liquid two-phase flow state measurement and oily water state measurement.
The utility model adopts the technical proposal that: the utility model provides a simple and easy suitable oil gas water triphase flow metering device, includes cyclone and flow computer, the cyclone top is equipped with and extends to the inside level gauge of cyclone, the cyclone side is equipped with differential pressure transmitter, the cyclone side is equipped with the fluid income pipe rather than inside intercommunication, the cyclone bottom is equipped with the fluid exit tube rather than inside intercommunication, the position that the cyclone side is close to the top is equipped with the gas phase pipeline rather than inside intercommunication, be equipped with gas flowmeter on the gas phase pipeline, gas phase pipeline and fluid exit tube intercommunication, the fluid is gone into the pipe and is equipped with the bypass pipeline of both ends respectively with fluid income pipe and fluid exit tube intercommunication with the fluid exit tube, level gauge, differential pressure transmitter and gas flowmeter are connected with flow computer electrical connection respectively.
In one embodiment, the outer surface of the cyclone separator is wound with electric tracing heat, and the electric tracing heat is electrically connected with a flow computer.
In one embodiment, a thermometer is arranged on the side surface of the cyclone separator.
In one embodiment, the fluid inlet pipe is provided with an inlet electric three-way valve, the inlet electric three-way valve is electrically connected with the flow computer, and the bypass pipeline is communicated with the inlet electric three-way valve.
In one embodiment, an outlet electric three-way valve is arranged on the fluid outlet pipe, the outlet electric three-way valve is electrically connected with the flow computer, and the gas phase pipeline is communicated with the outlet electric three-way valve.
In one embodiment, the connection between the bypass line and the fluid outlet pipe is located between the outlet electric three-way valve and the fluid outlet of the fluid outlet pipe.
In one embodiment, a sewage discharge pipe is arranged at one end of the fluid outlet pipe, which is far away from the outlet electric three-way valve.
The beneficial effects of the utility model reside in that:
1. the metering device can realize gas-liquid two-phase flow state metering and oil water content state measurement by matching the components;
2. in the process of measuring the gas-liquid two-phase flow state, instantaneous liquid phase flow can be obtained by using differential pressure and the pipe diameter of a cyclone separator or by using a liquid level meter and the pipe diameter of the cyclone separator, gas phase flow is measured by a gas flowmeter, the use of the flowmeter can be reduced, the cost is saved, and the accuracy of measuring the gas-liquid two-phase flow state can be ensured;
3. in the process of measuring the water-containing state, the liquid mixed density is obtained by statically measuring the differential pressure value and the liquid level height, and the volume percentage of the oil water is obtained by knowing the liquid phase densities of two different media.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. a cyclone separator; 2. a flow computer; 3. a liquid level meter; 4. a differential pressure transmitter; 5. a fluid inlet pipe; 6. a fluid outlet pipe; 7. a gas phase pipeline; 8. a gas flow meter; 9. a bypass line; 10. a thermometer; 11. an inlet electric three-way valve; 12. an outlet electric three-way valve; 13. a blow-off pipe; 601. a fluid outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a simple and easy applicable oil gas water three-phase flow metering device, including cyclone 1 and flow computer 2, cyclone 1 top is equipped with extends to cyclone 1 inside level gauge 3, cyclone 1 side is equipped with differential pressure transmitter 4, cyclone 1 side is equipped with the fluid income pipe 5 rather than inside intercommunication, cyclone 1 bottom is equipped with rather than inside intercommunication fluid exit tube 6, the position that cyclone 1 side is close to the top is equipped with rather than inside intercommunication gas phase pipeline 7, be equipped with gas flowmeter 8 on the gas phase pipeline 7, gas phase pipeline 7 and fluid exit tube 6 intercommunication, fluid income pipe 5 is equipped with the bypass line 9 of both ends respectively with fluid income pipe 5 and fluid exit tube 6 intercommunication with fluid exit tube 6, level gauge 3, differential pressure transmitter 4 and gas flowmeter 8 respectively with flow computer 2 electrical connection.
In this embodiment, the outer surface of the cyclone separator 1 is wound with an electric tracing, and the electric tracing is electrically connected with the flow computer 2.
In this embodiment, a thermometer 10 is disposed on a side surface of the cyclone separator 1.
In this embodiment, the fluid inlet pipe 5 is provided with an inlet electric three-way valve 11, the inlet electric three-way valve 11 is electrically connected to the flow computer 2, and the bypass line 9 is communicated with the inlet electric three-way valve 11.
In this embodiment, the fluid outlet pipe 6 is provided with an outlet electric three-way valve 12, the outlet electric three-way valve 12 is electrically connected to the flow computer 2, and the gas phase pipeline 7 is communicated with the outlet electric three-way valve 12.
In this embodiment, the connection point of the bypass line 9 and the fluid outlet pipe 6 is located between the outlet electric three-way valve 12 and the fluid outlet 601 of the fluid outlet pipe 6.
In this embodiment, a sewage draining pipe 13 is arranged at one end of the fluid outlet pipe 6 far away from the outlet electric three-way valve 12.
The metering device comprises gas-liquid two-phase flow state metering and oil-water state metering. If the gas-liquid two-phase flow state measurement is carried out, the flow computer 2 controls the inlet electric three-way valve 11 to conduct the inlet pipeline and the cyclone separator 1 and close the bypass pipeline 9. Meanwhile, the flow computer 2 controls the outlet electric three-way valve 12 to communicate the gas phase pipeline 7 with the fluid outlet 601, and closes the liquid phase fluid flow path from the fluid outlet pipe 6 to the fluid outlet 601. The gas-liquid mixed fluid enters the cyclone separator 1 through the fluid inlet pipe 5, the cyclone separator 1 separates the gas-liquid mixed fluid into a liquid phase and a gas phase, and the gas phase enters the gas phase pipeline 7 and flows to the fluid outlet 601 through the outlet electric three-way valve 12 and the fluid outlet pipe 6. The differential pressure transmitter 4 records the time and the liquid level change value required by the cyclone separator 1 from the liquid level lower limit value to the liquid level upper limit value. The lower limit value and the upper limit value of the liquid level of the cyclone separator 1 are manually set. Meanwhile, the pipe diameter of the cyclone separator 1 is determined, so that the instantaneous liquid phase flow can be obtained through the pipe diameter of the cyclone separator 1 and the time required by the liquid level in the cyclone separator 1 from the lower limit value of the liquid level to the upper limit value of the liquid level. Meanwhile, the gas phase flowmeter measures the gas phase flow. The sum of the instantaneous liquid phase flow and the gas phase flow measured by the gas phase flowmeter is the gas-liquid two-phase flow.
If the oil water content state is required to be measured, the waiting time for measuring the oil water content, the lower limit value of the differential pressure and the upper limit value of the differential pressure are required to be set in advance. Subsequently, the flow computer 2 controls the inlet electric three-way valve 11 to connect the inlet line with the cyclone 1 and to close the bypass line 9. Meanwhile, the flow computer 2 controls the outlet electric three-way valve 12 to close the path from the bottom outlet of the cyclone separator 1 to the outlet 601, and conducts the path from the gas phase pipeline 7 to the fluid outlet 601. The oil-water fluid enters the cyclone 1 and the liquid level inside the cyclone 1 starts to rise. When the liquid level in the cyclone separator 1 rises to the upper limit value of the differential pressure, the flow computer 2 controls the inlet electric three-way valve 11 to close the path between the fluid inlet pipe 5 and the cyclone separator 1 and conduct the bypass pipeline 9. Because the cyclone separator 1 is provided with electric tracing, the liquid in the cyclone separator 1 can be heated, settled and discharged with bubbles. When the oil water content measurement waiting time is reached, the differential pressure transmitter 4 reads the differential pressure value and outputs the differential pressure value to the flow computer 2, and the liquid level meter 3 reads the liquid level height and outputs the liquid level height to the flow computer 2. Calculating the density of the oil-water mixed fluid through a formula, wherein the calculation formula is as follows:
ΔP＝ghρ，
wherein, Δ P is a differential pressure value, g is a gravity acceleration, h is a liquid level height, and ρ is a liquid mixing density.
Meanwhile, the volume percentage of oil and water can be calculated according to the following formula:
A＝(ρ-ρ oil )/(ρ Water (W) -ρ Oil )，
Wherein A is the volume percentage of oil water, rho is the liquid mixing density, rho Oil Is the oil density, p Water (W) The water is water density.
Meanwhile, the device also comprises a hydraulic step. If the hydraulic pressure step is started, the flow computer 2 controls the outlet electric three-way valve 12 to open the path from the fluid outlet pipe 6 to the fluid outlet 601, and closes the path from the gas phase pipeline 7 to the fluid outlet 601. In the metering state, the circular metering can be realized only when the liquid level in the cyclone separator 1 is reduced to the lower limit value of the liquid level, and the air compression is not needed. When measuring the oil water content, the liquid phase in the cyclone separator 1 must be completely emptied to ensure the accuracy of the oil water content measurement.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (7)
1. A simple and easy applicable oil gas water three-phase flow metering device which characterized in that: including cyclone and flow computer, the cyclone top is equipped with the level gauge that extends to cyclone inside, the cyclone side is equipped with differential pressure transmitter, the cyclone side is equipped with the fluid inlet pipe rather than inside intercommunication, the cyclone bottom is equipped with the fluid exit tube rather than inside intercommunication, the cyclone side is close to the position at top and is equipped with the gaseous phase pipeline rather than inside intercommunication, be equipped with gas flowmeter on the gaseous phase pipeline, gaseous phase pipeline and fluid exit tube intercommunication, the fluid inlet pipe is equipped with the bypass pipeline of both ends respectively with fluid inlet pipe and fluid exit tube intercommunication with the fluid exit tube, level gauge, differential pressure transmitter and gas flowmeter are connected with flow computer electrical connection respectively.
2. A simple and applicable oil-gas-water three-phase flow metering device according to claim 1, characterized in that: and the outer surface of the cyclone separator is wound with electric tracing, and the electric tracing is electrically connected with the flow computer.
3. A simple and applicable oil-gas-water three-phase flow metering device as claimed in claim 1 or 2, which is characterized in that: and a thermometer is arranged on the side surface of the cyclone separator.
4. A simple and applicable oil-gas-water three-phase flow metering device according to claim 3, characterized in that: the fluid inlet pipe is provided with an inlet electric three-way valve, the inlet electric three-way valve is electrically connected with the flow computer, and the bypass pipeline is communicated with the inlet electric three-way valve.
5. A simple and applicable oil-gas-water three-phase flow metering device according to claim 4, characterized in that: an outlet electric three-way valve is arranged on the fluid outlet pipe, the outlet electric three-way valve is electrically connected with the flow computer, and the gas phase pipeline is communicated with the outlet electric three-way valve.
6. A simple and applicable oil-gas-water three-phase flow metering device according to claim 5, characterized in that: and the joint of the bypass pipeline and the fluid outlet pipe is positioned between the outlet electric three-way valve and the fluid outlet of the fluid outlet pipe.
7. A simple adapted oil-gas-water three-phase flow metering device according to any one of claims 1, 2, 4, 5 or 6, characterized in that: and a sewage discharge pipe is arranged at one end of the fluid outlet pipe, which is far away from the outlet electric three-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222839677.7U CN218376434U (en) | 2022-10-26 | 2022-10-26 | Simple and easy applicable oil gas water three-phase flow metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222839677.7U CN218376434U (en) | 2022-10-26 | 2022-10-26 | Simple and easy applicable oil gas water three-phase flow metering device |
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| CN218376434U true CN218376434U (en) | 2023-01-24 |
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| CN202222839677.7U Active CN218376434U (en) | 2022-10-26 | 2022-10-26 | Simple and easy applicable oil gas water three-phase flow metering device |
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