CN205477586U - Tubular oil well two -phase flow gauge - Google Patents
Tubular oil well two -phase flow gauge Download PDFInfo
- Publication number
- CN205477586U CN205477586U CN201620250426.7U CN201620250426U CN205477586U CN 205477586 U CN205477586 U CN 205477586U CN 201620250426 U CN201620250426 U CN 201620250426U CN 205477586 U CN205477586 U CN 205477586U
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- differential pressure
- pressure transmitter
- liquid
- pipe
- transmitter
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Abstract
The utility model provides a tubular oil well two -phase flow gauge, including first survey buret, buret is surveyed to the second, the entry three -way valve, the export three -way valve, first connection pipeline, the pipeline is connected to the second, a differential pressure transmitter, the 2nd differential pressure transmitter, the 3rd differential pressure transmitter and fourth differential pressure transmitter, this first survey buret surveys buret through this entry three - way valve connection in coming the liquid pipeline with this second, this first survey buret surveys buret through this export three - way valve connection in flowing back pipeline with this second, this first connecting wire is connected at this first survey buret top, this second connecting wire is connected at this second survey buret top, a differential pressure transmitter and the 2nd differential pressure transmitter connect in this first survey buret, the 3rd differential pressure transmitter and the measurement of fourth differential pressure transmitter are connected in second survey buret. This tubular oil well two -phase flow gauge's device simple structure, measuring transducer do not have movable parts, and acquisition of signal is convenient, accurate, easily realize.
Description
Technical field
This utility model relates to oilfield gas-liquid metering technical field, especially relates to a kind of tubular type oil well gas-liquid two-phase flow meter and measuring method thereof.
Background technology
Oil well produced liquid belongs to complex fluid, do not contain only oil, gas and water, sand, and fluid distrbution feature has disconnected plug flow, gas-liquid mixed stream and tubular section to have discontinuity, therefore realize well liquid, throughput is accurately measured, to oil recovery geological technique research unit according to the Liquid output variation tendency of oil well, science formulates development operation measure in time, it is achieved the high and stable yields of oil well are significant.
The metering of current domestic and international each oilfield Produced Liquid, gas is general uses vertical separator glass-tube liquid level meter, cyclonic separation, Weighing type tipping bucket and four kinds of metering methods of indicator card oil well measurement system.Wherein, vertical separator glass-tube liquid level meter has cheap, the advantage that can accurately measure oilwell produced fluid amount gas production, but relatively big to liquid measure fluctuation oil well measurement error, is not suitable for special thick oil well；Weighing type oil well meter is applicable to low accompanying gas, heavy crude well, but LOAD CELLS is unstable and is difficult in being arranged on measurement chamber to change, safeguards, calibrates, and can not measure oil well gas production；Cyclonic separation multiphase measurement pre-separation technology combined high precision instrument, liquid volume measurement accuracy is higher, the automatically controlling of oilwell produced fluid amount, continuous metering can be realized, gas-liquid separation effect is bad causes effusion meter metering distortion, gas flowmeter and fluid flowmeter are big by measuring medium influence, period regulation difficulty；Indicator card oil well measurement energy continuous metering oilwell produced fluid amount, can transmit data by real-time radio, and its deficiency existed is to be affected greatly by the factor such as eccentric wear, electric efficiency, and metering oil well liquid measure accuracy is low, and loaded displacement pickup is unstable.
Being found by test, relative to the three-phase metering mechanism of technical sophistication, traditional vertical separator glass-tube liquid level meter is best a kind of oil well gas-liquid measurement means, and the measuring station of current oil field at home nearly 90% uses vertical separator glass-tube liquid level meter.Vertical separator glass-tube liquid level meter using the volume of separator as the measurement instrument of oil well gas production Liquid output, its architectural feature determines the advantage that it has long time stability, but vertical separator glass-tube liquid level meter also has fatal defect, also exist low accompanying gas amount liquid duration, intermittent oil well error in dipping big, can not the defect of continuous metering.
From eighties of last century the nineties, for solving oil well air-liquid measurement problem, both at home and abroad research institution have developed multiple three-phase (two-phase) effusion meter in succession, has Xi'an to hand over the big civilian mound solenoid formula three-phase flow gauge developed, sea, Lanzhou to write from memory the radioactivity correlation coefficient process three-phase flow gauge etc. developed.These three-phase flow gauge are applied on oil well measurement, all there is bad adaptability, quantification stability is poor, fault rate is high defect, and price is expensive (every about 300,000 yuan), is difficult at oil field large-scale promotion application.
Utility model content
The purpose of this utility model is the above-mentioned deficiency overcoming prior art, a kind of operation relation used between differential pressure technology and flow is provided, directly measure the Liquid output of individual well and the tubular type oil well gas-liquid two-phase flow meter of gas production, the measuring method that this kind of effusion meter is used is provided simultaneously.
nullThe purpose of this utility model can be achieved by the following technical measures: tubular type oil well gas-liquid two-phase flow meter，This tubular type oil well gas-liquid two-phase flow meter includes the first measurement pipe，Second measures pipe，Inlet three-way valve，Outlet three-way valve，First connects pipeline，Second connects pipeline，First differential pressure transmitter，Second differential pressure transmitter，3rd differential pressure transmitter and the 4th differential pressure transmitter，This first measurement pipe and this second measurement pipe are connected to liquid pipeline by this inlet three-way valve，This first measurement pipe and this second measurement pipe are connected to tapping line by this outlet three-way valve，This first connecting line is connected to this first measurement pipe top，This second connecting line is connected to this second measurement pipe top，This first connecting line connects with this second connecting line，This first differential pressure transmitter and this second differential pressure transmitter are connected to this first measurement pipe，3rd differential pressure transmitter and the 4th differential pressure transmitter measurement are connected to the second measurement pipe.
The purpose of this utility model also can be achieved by the following technical measures:
This tubular type oil well gas-liquid two-phase flow meter also includes the first temperature transmitter and the second temperature transmitter, this first temperature transmitter is connected to this first measurement pipe, measure the temperature of well head two phase flow in this first measurement pipe, this second temperature transmitter is connected to this second measurement pipe, measures the temperature of well head two phase flow in this second measurement pipe.
This first differential pressure transmitter measurement terminal is positioned at the top of this first measurement pipe, and pressure measured by this first differential pressure transmitter is P1, this second differential pressure transmitter measurement terminal is positioned at the bottom of this first measurement pipe, and pressure measured by this second differential pressure transmitter is P0, according to pressure P1 measured by this first differential pressure transmitter, pressure P0 measured by this second differential pressure transmitter obtains transient liquid flow and individual well daily fluid production rate.
3rd differential pressure transmitter measurement terminal is positioned at the top of this first measurement pipe, and the 4th differential pressure transmitter measurement terminal is positioned at the bottom of this first measurement pipe, and pressure measured by the 3rd differential pressure transmitter is P3, pressure measured by this second differential pressure transmitter is P2, according to pressure P measured by the 3rd differential pressure transmitter3, pressure P measured by the 4th differential pressure transmitter2Obtain gas instantaneous delivery and individual well daily output tolerance.
This inlet three-way valve and this outlet three-way valve, when one measures the emptying rate of liquid in pipe, carry out commutation and realize this and first measure pipe and second to measure pipe the most hydraulically full.
The tubular type oil well gas-liquid two-phase flow meter that measuring method of the present utility model uses includes several measurement, differential pressure transmitter (each measurement pipe is a set of), three-way valve, several sections of connection pipelines, wherein carry out liquid pipeline to be connected with measuring pipe by three-way valve, each measurement pipe top is connected by pipeline, measure the bottom of pipe equipped with outlet three-way valve, selectively to control to measure the discharge opeing of pipe, each measurement pipe is provided with differential pressure transmitter.Its simple in construction, low cost, single device cost is within 20,000 yuan；Accuracy is higher, and individual well carrys out liquid error in dipping and is not more than ± 3%, and tolerance error in dipping is not more than ± 5%；Measurement data can real-time storage, storage time length adjustable, it is simple to real-time query；Field pipes is without dismounting, easy for installation, and submersible electric pump well operating mode fault diagnosis accuracy is higher than 90%, optimizes efficiency higher than 85%.
Accompanying drawing explanation
Fig. 1 is the structure chart of a specific embodiment of tubular type oil well gas-liquid two-phase flow meter of the present utility model.
Fig. 2 is the workflow diagram of tubular type oil well gas-liquid two-phase flow meter of the present utility model.
Detailed description of the invention
For making above and other objects, features and advantages of the present utility model to become apparent, cited below particularly go out preferred embodiment, and coordinate shown in accompanying drawing, be described in detail below.
As it is shown in figure 1, the structure chart that Fig. 1 is tubular type oil well gas-liquid two-phase flow meter of the present utility model.This tubular type oil well gas-liquid two-phase flow meter is by the first differential pressure transmitter measurement terminal 1, second differential pressure transmitter measurement terminal 2,3rd differential pressure transmitter measurement terminal 3, the 4th differential pressure transmitter measurement terminal 4, gas-liquid two-phase entrance 5, gas-liquid two-phase outlet 6, inlet three-way valve 7, exports three-way valve 8, and first measures pipe 9, second measures pipe 10, and the first connection pipeline 12 and the second connection pipeline 11 form.nullWell head two phase flow enters gas-liquid two-phase entrance 5，(pipe one conducting is measured for two by inlet three-way valve 7，One closedown) enter the first measurement pipe 9，Now the closedown of pipe 9 bottom valve measured by outlet three-way valve 8 by first，Second measures the conducting of pipe 10 bottom valve，Oil well associated gas by being connected to the first connection pipeline 12 at the first measurement pipe 9 top and can be connected to the second connection pipeline 11 at the second measurement pipe 10 top by liquid press-in gas-liquid two-phase outlet 6 in the second measurement pipe 10，In whole metering process，Can calculate flow quantity by the pressure difference value that differential pressure transmitter is measured，And then calculate the individual well Liquid output of every day，Daily output tolerance can be calculated by the relation of inlet flow rate Yu rate of discharge，When in the first measurement pipe 9, pressure reaches setting value，Inlet three-way valve 7 and outlet three-way valve 8 action simultaneously，Well head carrys out liquid and changes to the second measurement pipe 10 and measure，So toward complex Alternating，Achieve individual well Liquid output、Gas production real-time、Continuous metering.Data acquisition and procession is realized by computer system.
In one embodiment, tubular type oil well gas-liquid two-phase flow meter includes that several measurement is managed, and determines measurement pipe quantity according to oil-well drainage liquid measure size, oil-well drainage liquid measure is the biggest, the measurement Guan Yue needed is many, and according to oil field present case, most wells needs two or four to measure pipe.Each measurement pipe is also equipped with temperature transmitter measurement well array and carrys out the temperature of liquid.
The measuring method that above-mentioned oil well gas-liquid two-phase flow meter is used, as in figure 2 it is shown, comprise the following steps:
(1) well head two phase flow enters the first measurement pipe 9 through inlet three-way valve 7 by inlet duct, and by controlling outlet three-way valve 8, first measures pipe 9 stops discharge opeing, now second measures pipe 10 and carrys out liquid and close, and second measures pipe 10 tapping valve opens.
(2) liquid enters the first measurement pipe 9, can draw transient liquid flow according to the relation between pressure differential and gravity(wherein, P1、P0It is the first differential pressure transmitter measurement terminal 1, the second differential pressure transmitter measurement terminal 2 measuring pressure, t is the measurement time, and r is the radius measuring pipe, and g is acceleration of gravity).
(3) according to instantaneous delivery, individual well daily fluid production rate can be calculated
(4) gas then connects pipeline section entrance the second measurement pipe 10 by the first connection pipeline 12 and the second connection pipeline 11, and along with the increase of overpressure, gas measures liquid press-in outlet conduit, now drain age velocity v in pipe 10 by secondRow=vLiquid+vGas, so vGas=vRow-vLiquid, i.e. gas instantaneous delivery(wherein, P3、P2It is the 3rd differential pressure transmitter measurement terminal 3, the 4th differential pressure transmitter measurement terminal 4 measuring pressure).
(5) according to instantaneous delivery, daily output tolerance can be calculated
(6) (according to the big I of oilwell produced fluid amount setting two three-way valve movement time) after liquid in pipe is completely exhausted out is measured when one, by inlet three-way valve 7 and outlet three-way valve 8 commutation carry out the first measurement pipe 9 and second measure pipe 10 alternately, first measures pipe 9 and second, and to measure pipe 10 the most hydraulically full.
Claims (5)
1. tubular type oil well gas-liquid two-phase flow meter, it is characterised in that this tubular type oil well gas-liquid two-phase flow meter includes the first measurement pipe,
Second measures pipe, inlet three-way valve, exports three-way valve, and first connects pipeline, and second connects pipeline, the first differential pressure transporting
Device, the second differential pressure transmitter, the 3rd differential pressure transmitter and the 4th differential pressure transmitter, this first measurement pipe and this second measurement
Pipe is connected to liquid pipeline by this inlet three-way valve, and this first measurement pipe and this second measurement pipe are by this outlet three-way valve
Be connected to tapping line, this first connecting line be connected to this first measure pipe top, this second connecting line be connected to this second
Measuring pipe top, this first connecting line connects with this second connecting line, this first differential pressure transmitter and this second differential pressure transporting
Device is connected to this first measurement pipe, and the 3rd differential pressure transmitter and the 4th differential pressure transmitter measurement are connected to the second measurement pipe.
Tubular type oil well gas-liquid two-phase flow meter the most according to claim 1, it is characterised in that this tubular type oil well gas-liquid is biphase
Effusion meter also includes the first temperature transmitter and the second temperature transmitter, and this first temperature transmitter is connected to this first measurement
Pipe, measures the temperature of well head two phase flow in this first measurement pipe, and this second temperature transmitter is connected to this second measurement pipe,
Measure the temperature of well head two phase flow in this second measurement pipe.
Tubular type oil well gas-liquid two-phase flow meter the most according to claim 1, it is characterised in that this first differential pressure transmitter is surveyed
Amount terminal is positioned at the top of this first measurement pipe, and pressure measured by this first differential pressure transmitter is P1, this second differential pressure transmitter
Measurement terminal is positioned at the bottom of this first measurement pipe, and pressure measured by this second differential pressure transmitter is P0, according to this first differential pressure
Pressure P1 measured by transmitter, pressure P0 measured by this second differential pressure transmitter obtain transient liquid flow and individual well day production fluid
Amount.
Tubular type oil well gas-liquid two-phase flow meter the most according to claim 3, it is characterised in that the 3rd differential pressure transmitter is surveyed
Amount terminal is positioned at the top of this first measurement pipe, and the 4th differential pressure transmitter measurement terminal is positioned at the bottom of this first measurement pipe,
Pressure measured by 3rd differential pressure transmitter is P3, pressure measured by this second differential pressure transmitter is P2, according to the 3rd differential pressure
Pressure P measured by transmitter3, pressure P measured by the 4th differential pressure transmitter2Obtain gas instantaneous delivery and individual well daily gas
Amount.
Tubular type oil well gas-liquid two-phase flow meter the most according to claim 1, it is characterised in that this inlet three-way valve goes out with this
Mouthful three-way valve, when one measures the emptying rate of liquid in pipe, carries out commutation and realizes this and first measure pipe and second and measure pipe and alternately fill
Full liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620250426.7U CN205477586U (en) | 2016-03-29 | 2016-03-29 | Tubular oil well two -phase flow gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620250426.7U CN205477586U (en) | 2016-03-29 | 2016-03-29 | Tubular oil well two -phase flow gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205477586U true CN205477586U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620250426.7U Expired - Fee Related CN205477586U (en) | 2016-03-29 | 2016-03-29 | Tubular oil well two -phase flow gauge |
Country Status (1)
| Country | Link |
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| CN (1) | CN205477586U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323394A (en) * | 2016-10-17 | 2017-01-11 | 无锡洋湃科技有限公司 | Positive displacement mass flowmeter for multiphase flows |
| RU206801U1 (en) * | 2021-06-30 | 2021-09-28 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Device for measuring the flow rate of a gas-liquid mixture |
-
2016
- 2016-03-29 CN CN201620250426.7U patent/CN205477586U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323394A (en) * | 2016-10-17 | 2017-01-11 | 无锡洋湃科技有限公司 | Positive displacement mass flowmeter for multiphase flows |
| CN106323394B (en) * | 2016-10-17 | 2023-06-06 | 海默科技（集团）股份有限公司 | Positive displacement multiphase flow mass flowmeter |
| RU206801U1 (en) * | 2021-06-30 | 2021-09-28 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Device for measuring the flow rate of a gas-liquid mixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20170329 |