CN107905779A - Split-phase flow control formula oil well three-phase flow on-line metering device and method - Google Patents
Split-phase flow control formula oil well three-phase flow on-line metering device and method Download PDFInfo
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- CN107905779A CN107905779A CN201711164694.2A CN201711164694A CN107905779A CN 107905779 A CN107905779 A CN 107905779A CN 201711164694 A CN201711164694 A CN 201711164694A CN 107905779 A CN107905779 A CN 107905779A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Abstract
The present invention relates to a kind of split-phase flow control formula oil well three-phase flow on-line metering device and method.Mainly solve the problems, such as that existing metering method is low there are measurement accuracy.It is characterized in that：Upper liquid outlet, safe mouth and bottom lower liquid outlet pass through external pipe, flow passage at the top of measuring tank；External pipe lower end connects runner, runner connection lower liquid outlet by threeway, by-passing valve, and runner connects feed liquor screen casing by threeway；The metering method is divided into three gas phase, water phase and oil phase measuring phases flows, utilize runner switch technology, in different time sections, using the difference of oil gas water density, the split-phase of accident is exported, leaves a phase to be measured, use interface of oil and gas sensor and oil-water interfaces sensor, fine measurement, while the temperature and pressure of fluid is measured, draw oil and gas and water phase flow rate.The split-phase flow control formula oil well three-phase flow on-line metering device and method, measuring accuracy is high, and on-line metering is automatically subjected to phase splitting suitable for the oil such as individual well, measuring station, gas and water.
Description
Technical field
The present invention relates to oil extraction in oil field field of engineering technology, more particularly to a kind of split-phase flow control formula oil well three-phase flow to count online
Measure device and method.
Background technology
The split-phase metering of the metering of oil well output, particularly oil gas water three phase is one in field production management important
Work, accurately, timely measures oily well yield, to the production status in oil field, formulates production decision, has highly important finger
Lead meaning.At present, the method for production metering of oil wells that domestic each oil field uses mainly has glass tube oil gauge, tipping bucket gauging, amount of software
Oil, two partition density methods and three-phase separator measurement method etc., generally all there are the low problem of measurement accuracy for these methods.
The content of the invention
The invention reside in overcome in background technology existing metering method there are measurement accuracy it is low the problem of, so as to provide one
Kind split-phase flow control formula oil well three-phase flow on-line metering device.A kind of split-phase flow control formula oil well three-phase flow on-line metering device, meter
Accuracy of measurement is high, is automatically subjected to phase splitting on-line metering suitable for the oil such as individual well, measuring station, gas and water, individual phase measurement precision is better than ± 3%.This
Invention additionally provides a kind of metering method using split-phase flow control formula oil well three-phase flow on-line metering device.
The present invention solves the problems, such as that it can reach by following technical solution：A kind of split-phase flow control formula oil well three-phase flow is online
Metering device, including measuring tank, the measuring tank are the tank body that middle part is necking down；Measuring tank top, bottom have out
Liquid mouth, safe mouth and lower liquid outlet, pass through external pipe, flow passage between the upper liquid outlet, safe mouth and lower liquid outlet；On
Proportioning valve A is connected on liquid outlet upper external pipeline, proportioning valve A right hand externals pipeline connects tank top by threeway, safety valve
Safe mouth；External pipe lower end connects runner by threeway, runner respectively by threeway, proportioning valve B connection lower liquid outlets,
Pass through threeway, valve D connection feed liquor screen casings；Suction flange, outlet(discharge) flange are connected at runner both ends respectively.
The present invention also provides a kind of metering method for split-phase flow control formula oil well three-phase flow on-line metering device, including with
Lower step：
1）The first step：Gas phase measurement procedure：
Open valve D and proportioning valve A, close proportioning valve B and valve C, oil gas water three phase fluid from suction flange enter, by valve D, into
Liquid screen casing enters in measuring tank, the hierarchal arrangement of gas, oil, water occurs in measuring tank from top to bottom, when the interface of oil and gas rises to
During the top specific location of measuring tank, valve D and lower liquid outlet proportioning valve B is opened, upper outlet proportioning valve A and by-passing valve C is closed, opens
Beginning timing, gas phase can accumulate gradually on the top of measuring tank, and oppress grease and flowed out from lower liquid outlet, be counted when gasoil horizon reaches
Measuring tank bottom specific location constantly, stops timing, and at this moment interface of oil and gas sensor can measure the displacement of interface of oil and gas this period,
The corresponding sectional area of pressure sensor, temperature sensor, measuring tank is added, can draw the flow of gas phase in normal conditions；
2）Second step：Water gaging flow
Valve D and proportioning valve B is opened, closes valve C and proportioning valve A, gas phase can slowly add up, when interface of oil and gas sensor measures oil gas
When interface reaches measuring tank lowermost end, measuring tank be in entirely pneumatic state, opens valve D and proportioning valve A, close proportioning valve B with
Valve C, starts timing, and oil gas water three phase fluid enters from suction flange, enters by valve D, screen casing in measuring tank, in measuring tank certainly
The hierarchal arrangement of gas, oil, water from top to bottom occurs under, slowly moves up, when oil-water interfaces rise to from
When measuring upper end specific location, by-passing valve C is opened, closes upper outlet proportioning valve A, inlet control valve D and lower liquid outlet ratio
Example valve B, stops timing；Measuring tank has intercepted the three-phase fluid of a period of time at this time, by appropriate gravitational differentiation, when grease circle
When face translational speed is met the requirements, oil-water interfaces sensor, measures water mutually height；Cut with reference to time of measuring and measuring tank each several part
Area, can obtain the flow of water phase；
3）3rd step：Oil phase measurement procedure
Valve D and proportioning valve B is opened, closes valve C and proportioning valve A, gas phase can slowly add up, when interface of oil and gas sensor measures oil gas
When interface reaches measuring tank lowermost end, measuring tank be in entirely pneumatic state, opens valve D and proportioning valve A, close proportioning valve B with
Valve C, starts timing, and oil gas water three phase fluid enters from suction flange, enters by valve D, screen casing in batch box, due to gravity point
The reason for different, it may appear that the hierarchal arrangement of gas, oil, water from top to bottom, slowly moves up, when the interface of oil and gas completely on rise to
During the specific location of measuring tank top, interface of oil and gas sensor measures interface of oil and gas height, and oil-water interfaces sensor measures grease circle
Face height, when the two difference in height is less than special value, adjusts the suitable aperture of proportioning valve A and proportioning valve B, gas phase is from measuring tank
Liquid outlet flows out, and water is mutually flowed out from lower liquid outlet, and oil phase is clipped in the part of necking down among measuring tank by carbonated drink, if gasoil horizon
There is the sign that moves up, reduce the certain apertures of proportioning valve A, increase the certain apertures of proportioning valve B, if gasoil horizon occur to
The sign of lower movement, then reduce the certain apertures of proportioning valve B, increases the certain apertures of proportioning valve A, by feedback technique, remains
Gasoil horizon is maintained near the certain height of measuring tank top.Be more than until the difference in height of both the interface of oil and gas and oil-water interfaces or
During equal to special value, stop timing, open valve C, close proportioning valve A, proportioning valve B and valve D；Measuring tank has intercepted one section at this time
The oil phase of time, sprays appropriate chemical reagent acceleration water-oil separating by chemically reagent jet port, is supplied to crude oil electric dewatering instrument
Electricity accelerates water-oil separating and the gravitational differentiation of appropriate time, and moisture abjection is had in oil phase, and oil-water interfaces can move up, and work as oil
Water termination is when the stipulated time, displacement distance was met the requirements, interface of oil and gas sensor, and oil-water interfaces sensor measures oil phase height.
With reference to time of measuring and measuring tank each several part sectional area, the flow of oil phase can obtain.
It is of the invention to be had the advantages that compared with above-mentioned background technology：Split-phase flow control formula oil using the present invention
Well three-phase flow on-line metering device and method, using runner switch technology, in different time sections, utilizes the difference of oil gas water density
It is different, the split-phase of accident is exported, leaves a phase to be measured, has discharged and has interfered with each other Hu Yinsu between each phase, improves measurement essence
Degree；Use flow control mode when measuring oil phase, for a long time accumulative oil phase, when the oil phase is reached certain magnitude, then measure, elimination
Random error, improves measurement accuracy, the metering especially suitable for high water-cut well；Using totally-enclosed on-line measurement, safety collar
Protect；It is different according to production fluid component, appropriate water-oil separating reagent is may be optionally added, improves measurement accuracy；Measuring tank is additional to be added
Thermal element, avoids measurement top tank structure wax deposition, influences measurement accuracy.Measured using MULTISENSOR INTEGRATION, improve Measurement reliability.Adopt
With on-radiation measuring method, safety and environmental protection.
Brief description of the drawings
Attached drawing 1 is the structure diagram of the present invention；
Attached drawing 2 is that the present invention implements metering structure diagram.
In figure：1st, chemical reagent jet port；2nd, temperature sensor；3rd, interface of oil and gas sensor；4th, upper liquid outlet；5th, grease
Interface sensor；6th, proportioning valve A；7th, pressure sensor；8th, safety valve；9th, safe mouth；10th, measuring tank；11st, heating element；12、
Lower liquid outlet；13rd, outlet(discharge) flange；14th, proportioning valve B；15th, valve C；16th, suction flange；17th, valve D；18th, feed liquor screen casing；19th, crude oil
Electric dehydration instrument；20th, pool；21 oil-water interfaces；22nd, You Qu；23rd, external pipe；24th, the interface of oil and gas；25th, gas area；26th, runner.
Embodiment：
The invention will be further described below in conjunction with the accompanying drawings and the specific embodiments：
As shown in Figure 1 with Figure 2, a kind of split-phase flow control formula oil well three-phase flow on-line metering device, including measuring tank 10, the meter
Measuring tank 10 is not isometrical measuring tank, and the top of measuring tank 10, bottom have upper liquid outlet 4, safe mouth 9 and lower liquid outlet
12, the upper liquid outlet 4, safe mouth 9 are connected between lower liquid outlet 12 by external pipe 23, runner 26；4 top of upper liquid outlet
Proportioning valve A6 is connected on external pipe 23, proportioning valve A6 right hand externals pipeline 23 connects the peace of tank top by threeway, safety valve 8
Full mouth 9；23 lower end of external pipe connects runner 26 by threeway, and runner 26 is connected by threeway, proportioning valve B14, valve D17 respectively
Connect lower liquid outlet 12 and feed liquor screen casing 18；Valve C15 is connected on runner 26 between valve B 14, valve D17；10 upper cover of measuring tank is gone back downwards
Chemical reagent jet port 1, temperature sensor 2, interface of oil and gas sensor 3, oil-water interfaces sensor 5, pressure sensor are installed
7；Heating element 11 is wound on 10 outer wall of measuring tank；Suction flange 16, outlet(discharge) flange 13 are connected at 26 both ends of runner respectively；Metering
10 bottom of tank installation crude oil electric dewatering instrument 19；The measuring tank 10 is I-shaped not isometrical measuring tank, apart from pot bottom h2, h4 high
It is respectively middle part necking down end height at degree；It is divided into pool 20, oil-water interfaces 21, oily area 22, oil gas in measuring tank 10 from top to down
Interface 24, gas area 25；10 side of measuring tank is provided with data acquisition control transmission unit, and data acquisition control transmission unit can be adopted
The data acquisition control transmission unit of the model DQBH-CK1 produced with grand celebration Bao He Petroleum Technology Co., Ltd；The data
Acquisition control transmission unit connected respectively by cable chemical reagent jet port 1, temperature sensor 2, interface of oil and gas sensor 3,
Oil-water interfaces sensor 5, proportioning valve A6, pressure sensor 7, crude oil electric dewatering instrument 19, proportioning valve B14, valve C15, valve D17；Its
Middle proportioning valve B14 and proportioning valve A6 are linear scale valves, can be reached control by controlling its aperture size and pass through fluid flow
Purpose, can also open or completely close completely.
The method measured using the split-phase flow control formula oil well three-phase flow on-line metering device be divided into gas phase measuring phases,
Three flows of oil/water measurement stage and oil phase measuring phases, specifically include following steps：
1）The first step：Gas phase measurement procedure
Valve D17 and proportioning valve A6 to be opened, closes proportioning valve B14 and valve C15, oil gas water three phase fluid enters from suction flange 16,
Enter by valve D17, feed liquor screen casing 18 in measuring tank, due to gravitational differentiation, gas occurs in measuring tank from top to bottom
25th, the interface of oil and gas 24, oil 22, oil-water interfaces 21, the hierarchal arrangement of water 20, and slowly move up, fluid is flowed from proportioning valve A6
Go out, reaching outlet(discharge) flange 13 through pipeline flows out；When the interface of oil and gas 24 rises to the top h5 positions of measuring tank 10, the interface of oil and gas
Sensor 3 measures interface of oil and gas height H5, opens valve D17 and proportioning valve B14, closes proportioning valve A6 and valve C15, starts timing and is
Time t1, gas phase can accumulate gradually on the top of measuring tank 10, and oppress oily area 22 and pool 20 and flowed out from lower liquid outlet 12, when
Interface of oil and gas sensor 3 measures the interface of oil and gas height H1 when gasoil horizon 24 reaches 10 bottom h1 positions of measuring tank, opens valve
C15, closes valve D17, proportioning valve A6, proportioning valve B14, timing time t2, and timing terminates, static separation certain time, until
Interface of oil and gas sensor 3 measures the change of interface of oil and gas height H1 in a certain range, and separation terminates, and measures the gas phase time at this time
T=t2- t1, gas volume V=S1* (H5-h4+h2-H1)+s2* (h4-h2) of accumulation, wherein, S1 be 10 upper end of measuring tank and
Net sectional area inside lower end, S 2 is the net sectional area of the middle narrower portion bottleneck of measuring tank 10；Pressure sensor at this time
7 measure that pressure is P, to measure temperature be T, according to PVT equations to temperature sensor 2, and gas is volume V1 under standard state, conversion
It is into aerogenesis flow：V1/t；
2）Second step：Water gaging flow
Valve D17 and proportioning valve B14 is opened, closes valve C15 and proportioning valve A6, gas phase can slowly add up, when interface of oil and gas sensor
When measuring interface of oil and gas arrival measuring tank lowermost end, measuring tank is in entirely pneumatic state, opens valve D17 and proportioning valve A6, closes
Proportioning valve B14 and valve C15 are closed, oil gas water three phase fluid enters from suction flange 16, enters measuring tank by valve D17, screen casing 18
It is interior, gas area 25, the interface of oil and gas 24, oily area 22, oil-water interfaces occur from top to bottom due to gravitational differentiation, in measuring tank
21st, the hierarchal arrangement in pool 20, and slowly move up, fluid is flowed out from proportioning valve A6, and reaching outlet(discharge) flange 13 through pipeline flows
Go out, when oil-water interfaces 21 rise to the h1 positions of measuring tank 10, oil-water interfaces sensor 5 measures oil-water interfaces height H1, opens
Beginning timing, time t1, water, which is met, to accumulate gradually in the bottom of measuring tank 10, and oppresses oil 22 gentle 25 and flowed from upper liquid outlet 4
Go out, when oil-water interfaces 21 reach 10 top h5 positions of measuring tank, oil-water interfaces sensor 5 measures oil-water interfaces height H5, beats
By-passing valve C15 is opened, proportioning valve A6, valve D17 and proportioning valve B14, time t2, timing is closed and terminates, measurement water phase time t=
t2- t1；Measuring tank has intercepted the three-phase fluid of a period of time at this time, by appropriate gravitational differentiation, while 11 He of heating element
Crude oil electric dewatering instrument 19 is powered, and accelerates disengaging time, it is necessary to when adding chemical reagent, oily chemical reagent filler 1 adds in right amount
Reagent, accelerates the separation of oil gas water three phase, and when 21 translational speed of oil-water interfaces is met the requirements, oil-water interfaces sensor 5, is surveyed
Obtain water phase height H5；Water body volume V=S1* (the H5-h4+h2-H1)+s2* (h4-h2) of accumulation combines time of measuring and measuring tank
Each several part sectional area, the flow that can obtain water phase are：V/t；
3）3rd step：Oil phase measurement procedure
Valve D17 and proportioning valve B14 is opened, closes valve C15 and proportioning valve A6, gas phase can slowly add up, when interface of oil and gas sensor
When measuring interface of oil and gas arrival measuring tank lowermost end, measuring tank is in entirely pneumatic state, opens valve D17 and proportioning valve A6, closes
Close proportioning valve B14 and valve C15, start timing, time t1, oil gas water three phase fluid enters from suction flange 16, by valve D17,
Screen casing 18 enter batch box in, due to gravitational differentiation, in measuring tank from top to bottom can Hui Qi areas 25, the interface of oil and gas 24,
Oily area 22, oil-water interfaces 21, the hierarchal arrangement in pool 20, and slowly move up, fluid is flowed out from proportioning valve A6, is arrived through pipeline
Flowed out up to outlet(discharge) flange 13, when the interface of oil and gas 24 rises to measuring tank top specific location h4, control proportioning valve A6 opens one
Determine aperture, close the certain apertures of proportioning valve B14, gas phase is flowed out from upper liquid outlet 4, and water is mutually flowed out from lower liquid outlet 12, oil phase quilt
Carbonated drink is clipped in the part oil area 22 of necking down among measuring tank, if the sign moved up occurs in gasoil horizon 24, reduces ratio
The certain apertures of valve A6, increase the certain apertures of proportioning valve B14, if the sign moved down occurs in gasoil horizon 24, reduce ratio
The example certain apertures of valve B14, increase the certain apertures of proportioning valve A6, by feedback, remain that gasoil horizon 24 maintains measuring tank
Near 10 top specific location h4；Until the difference in height of both the interface of oil and gas 24 and oil-water interfaces 21 is greater than or equal to special value
When, stop timing, time t2, measures oil phase time t=t2- t1；Measuring tank has intercepted the three-phase fluid of a period of time at this time,
Power at the same time to heating element 11 and crude oil electric dewatering instrument 19, accelerate disengaging time, it is necessary to when adding chemical reagent, oiling is tried
Agent filler 1 adds appropriate reagent, accelerates the separation of oil gas water three phase, after the gravitational differentiation of appropriate time, is had in oil phase
Moisture is deviate from, and oil-water interfaces 21 can move up, when 21 translational speed of oil-water interfaces is met the requirements, oil-water interfaces sensor 5
Measure oil-water interfaces height H；Interface of oil and gas sensor 3 measures interface of oil and gas height H0, oil volume V=s2* (H-H0) of accumulation,
The flow that can obtain oil phase is：V/t.
The split-phase flow control formula oil well three-phase flow on-line metering device and method, using runner switch technology, in different time
Section, using the difference of oil gas water density, exports the split-phase of accident, leaves a phase to be measured, has discharged and has mutually been concerned between each phase
Hu Yinsu is disturbed, improves measurement accuracy；Multiple flow control mode is used when measuring oil phase, it is accumulative for a long time, oil phase is reached certain
During magnitude, then measure, eliminate random error, improve measurement accuracy, the metering especially suitable for high water-cut well；Using
Totally-enclosed on-line measurement, safety and environmental protection；It is different according to production fluid component, appropriate water-oil separating reagent is may be optionally added, is improved
Measurement accuracy；The additional heating element of measuring tank, avoids measurement top tank structure wax deposition, influences measurement accuracy.Using MULTISENSOR INTEGRATION
Measurement, improves Measurement reliability.Using on-radiation measuring method, safety and environmental protection.
Claims (8)
1. a kind of split-phase flow control formula oil well three-phase flow on-line metering device, including measuring tank（10）, it is characterised in that：The metering
Tank（10）It is the tank body that middle part is necking down；Measuring tank（10）Top, bottom have upper liquid outlet（4）, safe mouth（9）Under and
Liquid outlet（12）, the upper liquid outlet（4）, safe mouth（9）With lower liquid outlet（12）Between pass through external pipe（23）, runner（26）
Connection；Upper liquid outlet（4）Upper external pipeline（23）On be connected to proportioning valve A（6）, proportioning valve A（6）Right hand external pipeline（23）It is logical
Cross threeway, safety valve（8）Connect the safe mouth of tank top（9）；External pipe（23）Lower end connects runner by threeway
（26）, the runner（26）Pass through threeway, proportioning valve B（14）Connect lower liquid outlet（12）, runner（26）Pass through threeway, valve D
（17）Connect feed liquor screen casing（18）；Runner（26）Suction flange is connected at both ends respectively（16）, outlet(discharge) flange（13）.
A kind of 2. split-phase flow control formula oil well three-phase flow on-line metering device according to claim 1, it is characterised in that：It is described
Measuring tank（10）Upper cover is also equipped with downwards chemical reagent jet port（1）, temperature sensor（2）, interface of oil and gas sensor（3）、
Oil-water interfaces sensor（5）, pressure sensor（7）；Proportioning valve B（14）, valve D（17）Between runner（26）On be connected to by-passing valve C
（15）.
A kind of 3. split-phase flow control formula oil well three-phase flow on-line metering device according to claim 1, it is characterised in that：It is described
Measuring tank（10）Heating element is wound on outer wall（11）.
A kind of 4. split-phase flow control formula oil well three-phase flow on-line metering device according to claim 1, it is characterised in that：It is described
Measuring tank（10）Bottom is installed by crude oil electric dewatering instrument（19）.
A kind of 5. split-phase flow control formula oil well three-phase flow on-line metering device according to claim 1, it is characterised in that：It is described
Measuring tank（10）For I-shaped measuring tank, it is respectively middle part necking down end height highly to locate apart from pot bottom h2, h4.
A kind of 6. split-phase flow control formula oil well three-phase flow on-line metering device according to claim 1, it is characterised in that：It is described
Measuring tank（10）It is interior to lower and on be divided into pool（20）, oil-water interfaces（21）, oily area（22）, the interface of oil and gas（24）, gas area（25）.
7. a kind of metering method of split-phase flow control formula oil well three-phase flow on-line metering device using described in claim 1, it is special
Sign is：Comprise the following steps：
1）The first step：Gas phase measurement procedure：
Open valve D（17）With proportioning valve A（6）, close proportioning valve B（14）With valve C（15）, oil gas water three phase fluid is from suction flange
（16）Into by valve D（17）, feed liquor screen casing（18）The interface of oil and gas rises to measuring tank（10）Top specific location h5 when,
Open inlet control valve D（17）With proportioning valve B（14）, close upper outlet proportioning valve A（6）With by-passing valve C（15）, start to count
When, gas phase can accumulate gradually in measuring tank（10）Top, and oppress grease from lower liquid outlet（12）Outflow, when gasoil horizon arrives
Up to measuring tank（10）During the specific location h1 of bottom, timing terminates, at this moment interface of oil and gas sensor（3）The interface of oil and gas this section can be measured
The displacement h5-h1 of time, adds pressure sensor（7）, temperature sensor（2）, the corresponding sectional area of measuring tank, can draw
The flow of gas phase under standard state；
2）Second step：Water gaging flow：
Open valve D（17）With proportioning valve B（14）, close valve C（15）With proportioning valve A（6）, gas phase can slowly add up, when oil gas circle
When face sensor measures interface of oil and gas arrival measuring tank lowermost end, measuring tank is in entirely pneumatic state, opens valve D（17）With
Proportioning valve A（6）, close proportioning valve B（14）With valve C（15）, oil gas water three phase fluid is from suction flange（16）Into by valve D
（17）, screen casing（18）Into in measuring tank, the hierarchal arrangement of gas, oil, water occurs in measuring tank from top to bottom, slowly to moving up
It is dynamic, work as oil-water interfaces（21）Rise to measuring tank（10）During specific location h1, start timing, when oil-water interfaces are risen to from metering
Tank（10）During the specific location h5 of top, by-passing valve C is opened（15）, close upper outlet proportioning valve A（6）, inlet control valve D（17）
With lower liquid outlet proportioning valve B（14）, stop timing；Measuring tank has intercepted the three-phase fluid of a period of time at this time, by appropriate
Gravitational differentiation, when oil-water interfaces translational speed is met the requirements, oil-water interfaces sensor（5）, measure water mutually height；With reference to measurement
Time, the actual mobile height of water phase and measuring tank each several part sectional area, can obtain the flow of water phase；
3）3rd step：Oil phase measurement procedure：
Open valve D（17）With proportioning valve B（14）, close valve C（15）With proportioning valve A（6）, gas phase can slowly add up, when oil gas circle
When face sensor measures interface of oil and gas arrival measuring tank lowermost end, measuring tank is in entirely pneumatic state, opens valve D（17）With
Proportioning valve A（6）, close proportioning valve B（14）With valve C（15）, start timing, oil gas water three phase fluid is from suction flange（16）Into
Enter, by valve D（17）, screen casing（18）Into in batch box, due to gravitational differentiation, it may appear that gas, oil, water from top to bottom
Hierarchal arrangement, slowly move up, when the interface of oil and gas completely on rise to measuring tank（10）During the specific location h4 of top, oil gas
Interface sensor（3）Measure interface of oil and gas height, oil-water interfaces sensor（5）Oil-water interfaces height is measured, the two difference in height is small
When special value, proportioning valve A is adjusted（6）With proportioning valve B（14）Suitable aperture, gas phase is from upper liquid outlet（4）Outflow, water phase
From lower liquid outlet（12）Outflow, oil phase are clipped in the part oil area of necking down among measuring tank by carbonated drink（22）If gasoil horizon
（24）There is the sign moved up, reduce proportioning valve A（6）Certain aperture, increases proportioning valve B（14）Certain aperture, if gas
Oil interface（24）There is the sign moved down, then reduce valve B（14）Certain aperture, increases valve A（6）Certain aperture, is protected all the time
Hold gasoil horizon（24）Maintain measuring tank（10）Near the certain height of top；Until the interface of oil and gas（24）And oil-water interfaces（21）
When the difference in height of the two is greater than or equal to special value, stop timing, open valve C（15）, close proportioning valve A（6）, proportioning valve B
（14）With valve D（17）；Measuring tank at this time（10）The oil phase of a period of time is intercepted, after the gravitational differentiation of appropriate time, in oil phase
Have moisture abjection, oil-water interfaces（21）It can move up, work as oil-water interfaces（21）Met the requirements in stipulated time displacement distance
When, interface of oil and gas sensor（3）, oil-water interfaces sensor（5）Measure oil phase height；With reference to time of measuring and measuring tank each several part
Sectional area, can obtain the flow of oil phase.
8. the metering method according to claim 7 using split-phase flow control formula oil well three-phase flow on-line metering device, it is special
Sign is：The step（2）And（3）In can pass through heating element（11）With crude oil electric dewatering instrument（19）Power supply；Oiling can be passed through
Learn reagent filler（1）Add reagent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711164694.2A CN107905779B (en) | 2017-11-21 | 2017-11-21 | Online metering device and method for three-phase flow of split-phase flow control type oil well |
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| CN201711164694.2A CN107905779B (en) | 2017-11-21 | 2017-11-21 | Online metering device and method for three-phase flow of split-phase flow control type oil well |
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| CN107905779B CN107905779B (en) | 2021-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444382A (en) * | 2018-10-11 | 2019-03-08 | 江苏华尔威科技集团有限公司 | A kind of crude oil single well metering system with transporting function |
| CN111206918A (en) * | 2020-03-25 | 2020-05-29 | 新疆金牛能源物联网科技股份有限公司 | Oil well metering equipment |
| CN112985503A (en) * | 2021-02-20 | 2021-06-18 | 东北石油大学 | Online measuring device and method for oil-water two-phase flow holdup and flow velocity |
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