CN212337262U - Single well multiphase flow metering device - Google Patents
Single well multiphase flow metering device Download PDFInfo
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- CN212337262U CN212337262U CN202022148192.4U CN202022148192U CN212337262U CN 212337262 U CN212337262 U CN 212337262U CN 202022148192 U CN202022148192 U CN 202022148192U CN 212337262 U CN212337262 U CN 212337262U
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Abstract
The utility model discloses a single-well multiphase flow metering device, which comprises a first pipeline, a second pipeline communicated with the two ends of the first pipeline, a flow computer and a multi-flow metering component, the middle sections of the first pipeline and the second pipeline are communicated through an exhaust pipeline, the outer surface of the second pipeline is wound with electric tracing, one end of the first pipeline is provided with a pipeline type flow mixer communicated with the first pipeline, one end of the pipeline type flow mixer far away from the first pipeline is provided with an inlet, the other end of the first pipeline is provided with an outlet, the multi-directional flow metering component comprises a gas-liquid two-phase mass flowmeter and an electric three-way valve, the gas-liquid two-phase mass flowmeter is arranged in the middle section of the second pipeline, the electric three-way valve is arranged at one end of the first pipeline close to the outlet and communicated with the second pipeline, and the gas-liquid two-phase mass flowmeter and the electric three-way valve are respectively electrically connected with the flow computer. The utility model discloses can realize that the double-phase flow measurement of gas-liquid and the static oil water content of sample are measured.
Description
Technical Field
The utility model belongs to heterogeneous flow measurement field, concretely relates to heterogeneous flow measurement device of single well.
Background
In order to realize digital, automatic, modularized and intelligent oil fields of the oil and gas fields, the oil and gas fields urgently need oil and gas well monitoring equipment with high cost performance and excellent performance. The single-well multiphase flowmeter is very important logging equipment for an oil-gas field, but the single-well metering cost is very high, so that at present, in order to reduce investment, oil extraction enterprises have to use a plurality of wells to share one multiphase flowmeter, and metering is carried out in turn at different time periods, so that the mode metering error is large, the oil well cannot be accurately and continuously analyzed and evaluated in real time, and the scientific oil production of the oil field and the service life of the oil well are influenced. In addition, most of oil field single well oil water content measurement adopts 1-2 days of artificial well mouth sampling once, and then the sampling is sent to a laboratory for analysis and test, so that the automatic and accurate measurement of oil water content can not be realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that just to above-mentioned prior art not enough, provide a heterogeneous class metering device of single well, can realize that the double-phase flow measurement of gas-liquid and the measurement of the static oil moisture of sample.
The utility model adopts the technical proposal that: a single-well multiphase flow metering device comprises a first pipeline, a second pipeline communicated with two ends of the first pipeline, a flow computer and a multi-directional flow metering assembly, wherein the middle sections of the first pipeline and the second pipeline are communicated through an exhaust pipeline, electric tracing is wound on the outer surface of the second pipeline, a pipeline type flow mixer communicated with the first pipeline is arranged at one end of the first pipeline, an inlet is formed in one end, away from the first pipeline, of the pipeline type flow mixer, an outlet is formed in the other end of the first pipeline, a height difference is formed between the lowest end of the inner diameter of the first pipeline and the topmost end of the inner diameter of the second pipeline, an included angle is formed between a connecting line between the axes of the first pipeline and the second pipeline and a horizontal plane, the multi-directional flow metering assembly comprises a gas-liquid two-phase mass flow meter and an electric three-way valve, the gas-liquid two-phase mass flow meter is arranged at the middle section of the second pipeline, the electric three-way valve is arranged, the gas-liquid two-phase mass flowmeter and the electric three-way valve are respectively electrically connected with a flowmeter computer.
In one embodiment, the height difference between the lowest end of the first pipeline inner diameter and the highest end of the second pipeline inner diameter is not less than 0 mm.
In one embodiment, the included angle between the horizontal plane and the connecting line between the axes of the first pipeline and the second pipeline is less than or equal to 90 degrees.
In one embodiment, the multi-directional flow metering assembly further comprises a pressure transmitter disposed on the second pipe at an end thereof adjacent to the inlet, the pressure transmitter being electrically connected to the flow computer.
The beneficial effects of the utility model reside in that: through the switching of the electric three-way valve, the measurement of gas-liquid two-phase flow and the measurement of sampling static oil water content can be conveniently realized, and meanwhile, the problems of flow velocity, crude oil wax content, liquid phase bubble content, dirt and the like which influence the measurement in the single-well oil water content measurement can be effectively solved, and the measurement precision is ensured; the outer surface of the second pipeline is wound with electric tracing heat, and wax in the liquid-phase mixed fluid can be melted before measurement so as to avoid influencing the measurement accuracy of oil water content.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the first pipeline and the second management elevation difference and the included angle of the present invention.
In the figure: 1. an inlet; 2. a pipeline flow mixer; 3. a pressure transmitter; 4. a gas-liquid two-phase mass flowmeter; 5. an exhaust line; 6. a first pipeline; 7. a second pipeline; 8. an electric three-way valve; 9. an outlet; 10. and a flow computer.
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 single-well multiphase flow metering device comprises a first pipeline 6, a second pipeline 7 communicated with two ends of the first pipeline 6, a flow computer 10 and a multi-directional flow metering assembly, wherein the middle sections of the first pipeline 6 and the second pipeline 7 are communicated through an exhaust pipeline 5, an electric tracing is wound on the outer surface of the second pipeline 7, a pipeline type flow mixer 2 communicated with one end of the first pipeline 6 is arranged at one end of the first pipeline 6, an inlet 1 is arranged at one end, away from the first pipeline 6, of the pipeline type flow mixer 2, an outlet 9 is arranged at the other end of the first pipeline 6, a height difference is arranged between the lowest end of the inner diameter of the first pipeline 6 and the topmost end of the inner diameter of the second pipeline 7, an included angle is arranged between a connecting line between the axial lines of the first pipeline 6 and the second pipeline 7 and a horizontal plane, the multi-directional flow metering assembly comprises a gas-liquid two-phase mass flow meter 4 and, the gas-liquid two-phase mass flow meter 4 is arranged in the middle section of the second pipeline 7, the electric three-way valve 8 is arranged at one end of the first pipeline 6 close to the outlet 9 and communicated with the second pipeline 7, and the gas-liquid two-phase mass flow meter 4 and the electric three-way valve 8 are respectively and electrically connected with the flow computer 10.
In this embodiment, the height difference between the lowest end of the inner diameter of the first pipeline 6 and the highest end of the inner diameter of the second pipeline 7 is not less than 0 mm.
In this embodiment, an included angle between a connecting line between the axes of the first pipeline 6 and the second pipeline 7 and a horizontal plane is less than or equal to 90 °.
In this embodiment, the multi-directional flow metering assembly further includes a pressure transmitter 3, the pressure transmitter 3 is disposed at one end of the second pipeline 7 close to the inlet 1, and the pressure transmitter 3 is electrically connected to the flow computer 10.
The single-well multiphase flow metering method can be used for single-well multiphase flow metering, and comprises the following steps:
step 20, the flow computer 10 controls the electric three-way valve 8 to close the first pipeline 6, conducts the second pipeline 7, the gas-liquid mixed fluid enters the second pipeline 7 after passing through the pipeline type flow mixer 2, the gas quantity and the liquid quantity are measured by the gas-liquid two-phase mass flowmeter 4, and the gas quantity and the liquid quantity are discharged from the outlet 9 after passing through the electric three-way valve 8;
step 30, setting a static oil water content measurement duration value by the flow computer 10, simultaneously controlling the electric three-way valve 8 to close the second pipeline 7, conducting the first pipeline 6, enabling the gas-liquid mixed fluid to enter the pipeline type flow mixer 2, forming a liquid-phase oil-water mixed uniform state under the action of the pipeline type flow mixer 2, and entering step 40;
step 40, a height difference exists between the lowest end of the inner diameter of the first pipeline 6 and the top end of the inner diameter of the second pipeline 7, liquid phase fluid in the first pipeline 6 gradually enters the gas-liquid two-phase mass flow meter 4 through the second pipeline 7, gas in the second pipeline 7 is discharged through the gas discharge pipeline 5, electric tracing work is conducted to melt wax in the liquid phase mixed fluid, and the step 50 is conducted;
step 50, when the set standing oil water content measurement duration value is reached, the flow computer 10 reads the liquid phase oil-water density value measured by the gas-liquid two-phase mass flow meter 4, the flow computer 10 calculates the oil water content value, and the step 60 is entered;
and step 60, controlling the electric three-way valve 8 to close the first pipeline 6 and open the second pipeline 7 by the flow computer 10, and finishing measurement.
The metering method further comprises an interval measuring step, which comprises the following specific steps:
the flow computer 10 sets the time length value of the measurement of the water content of the static oil and the interval time of the measurement of the water content of the static oil, and repeats the steps 30 to 60.
In the above metering method, in step 50, the flow computer 10 calculates the water content value of the oil, specifically as follows:
the flow computer 10 inputs the density of pure oil and the density of water under certain conditions, and when the temperature of the fluid changes, the compensation calculation of the density of liquid phase is carried out according to the change of the oil temperature and the density of water, and then the volume percentage of oil and the volume percentage of water are respectively calculated to obtain the water content value of oil.
In the above metering method, in step 50, during the measurement of the oil water content value, the gas phase flow rate and the liquid phase flow rate of the static oil water content measurement time period are replaced by the previously metered average gas phase flow rate and average liquid phase flow rate by the flow computer 10.
As shown in fig. 2, in the utility model, the height difference that sets up between the first pipeline 6 internal diameter least significant end and the second pipeline 7 internal diameter top most significant end is H, H ≧ 0 mm. Setting the included angle between the connecting line between the axes of the first pipeline 6 and the second pipeline 7 and the horizontal plane as alpha, wherein alpha is ≦ 90 °
The utility model discloses in, the measurement duration value of the moisture of static oil and the measurement interval time of the moisture of static oil can set up according to actual conditions wantonly. However, in the measuring process, the temperature in the second pipeline 7 can be rapidly increased by electric tracing heating and heat preservation of the second pipeline 7, the wax in the liquid-phase mixed fluid is melted, and meanwhile, the viscosity can be reduced, so that the oil water content measuring precision can be improved; meanwhile, the standing oil water content waiting time is beneficial to completely discharging air bubbles from a liquid phase, and the accuracy of oil water content measurement is guaranteed.
The utility model can conveniently realize the measurement of gas-liquid two-phase flow and the measurement of sampling static oil water content by switching the electric three-way valve 8, and can effectively solve the problems of flow velocity, crude oil wax content, liquid phase bubble content, dirt and the like which influence the measurement in the single-well oil water content measurement, thereby ensuring the measurement precision; wherein, the second pipeline 7 surface twines electric tracing, can melt the wax in the liquid phase fluid mixture before the measurement, can improve oil moisture measurement accuracy.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. A single-well multiphase flow metering device is characterized by comprising a first pipeline, a second pipeline communicated with two ends of the first pipeline, a flow computer and a multi-directional flow metering assembly, wherein the middle sections of the first pipeline and the second pipeline are communicated through an exhaust pipeline, electric tracing is wound on the outer surface of the second pipeline, a pipeline type flow mixer communicated with the first pipeline is arranged at one end of the first pipeline, an inlet is formed in one end, away from the first pipeline, of the pipeline type flow mixer, an outlet is formed in the other end of the first pipeline, a height difference is formed between the lowest end of the inner diameter of the first pipeline and the topmost end of the inner diameter of the second pipeline, an included angle is formed between a connecting line between the axes of the first pipeline and the second pipeline and a horizontal plane, the multi-directional flow metering assembly comprises a gas-liquid two-phase mass flow meter and an electric three-way valve, the gas-liquid two-phase mass flow meter is arranged, the electric three-way valve is arranged at one end of the first pipeline close to the outlet and communicated with the second pipeline, and the gas-liquid two-phase mass flow meter and the electric three-way valve are respectively electrically connected with the flow computer.
2. A multiphase flow metering device for single well according to claim 1, wherein the height difference between the lowest end of the inner diameter of the first pipeline and the highest end of the inner diameter of the second pipeline is not less than 0 mm.
3. A multiphase flow metering device for a single well according to claim 2, wherein the angle between the horizontal and a line connecting the axes of the first and second pipes is less than or equal to 90 °.
4. A single well multiphase flow metering device according to claim 1 or 2, wherein the multi-directional flow metering assembly further comprises a pressure transmitter disposed at an end of the second pipe proximate to the inlet, the pressure transmitter being electrically connected to the flow computer.
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| CN202022148192.4U CN212337262U (en) | 2020-09-25 | 2020-09-25 | Single well multiphase flow metering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980669A (en) * | 2020-09-25 | 2020-11-24 | 新疆中元天能油气科技股份有限公司 | Single-well multiphase flow metering device and metering method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111980669A (en) * | 2020-09-25 | 2020-11-24 | 新疆中元天能油气科技股份有限公司 | Single-well multiphase flow metering device and metering method |
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