CN207420561U - A kind of split-phase flow control formula oil well three-phase flow on-line metering device - Google Patents
A kind of split-phase flow control formula oil well three-phase flow on-line metering device Download PDFInfo
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- CN207420561U CN207420561U CN201721568640.8U CN201721568640U CN207420561U CN 207420561 U CN207420561 U CN 207420561U CN 201721568640 U CN201721568640 U CN 201721568640U CN 207420561 U CN207420561 U CN 207420561U
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Abstract
The utility model is related to a kind of split-phase flow control formula oil well three-phase flow on-line metering devices.Mainly solve the problems, such as that existing metering method is low there are measurement accuracy.It is characterized in that：The measuring tank is that middle part is necking down；Measuring tank top, bottom have upper liquid outlet, safe mouth and lower liquid outlet, pass through external pipe, flow passage between the upper liquid outlet, safe mouth and lower liquid outlet；Proportioning valve A is connected on upper liquid outlet upper external pipeline, proportioning valve A right hand externals pipeline connects the safe mouth of tank top by threeway, safety valve；External pipe lower end connects runner by threeway, and the runner passes through threeway, valve D connection feed liquor screen casings by threeway, proportioning valve B connection lower liquid outlets, runner.The split-phase flow control formula oil well three-phase flow on-line metering device 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 utility model is related 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 exist
Line metering device.
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
Oily well yield accurately, is timely measured in work, 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., all there are the low problems of measurement accuracy for these methods.
The content of the invention
The utility model lies in that overcome the problems, such as that existing metering device is low there are measurement accuracy in background technology, so as to carry
For a kind of split-phase flow control formula oil well three-phase flow on-line metering device.The 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%.
The invention for solving the technical problem can reach by following technical solution：A kind of split-phase flow control formula oil well three-phase flow
On-line metering device, including measuring tank, the measuring tank is the tank body that middle part is necking down；Measuring tank top, bottom have
Upper liquid outlet, safe mouth and lower liquid outlet are connected between the upper liquid outlet, safe mouth and lower liquid outlet by external pipe, runner
It is logical；Proportioning valve A is connected on upper liquid outlet upper external pipeline, proportioning valve A right hand externals pipeline connects tank by threeway, safety valve
The safe mouth at top；External pipe lower end connects runner by threeway, and runner under threeway, proportioning valve B connections respectively by going out
Liquid mouth passes through threeway, valve D connection feed liquor screen casings；Suction flange, outlet(discharge) flange are connected at runner both ends respectively.
The utility model can have the advantages that compared with above-mentioned background technology：Using the split-phase of the utility model
Flow control formula oil well three-phase flow on-line metering device, 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；Using flow control mode when measuring oil phase, accumulative oil phase for a long time when so that the oil phase is reached certain magnitude, then is measured, eliminated
Random error, improves measurement accuracy, the metering especially suitable for high water-cut well；Using totally-enclosed on-line measurement, safety collar
It protects；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, improves measurement accuracy.It is measured using MULTISENSOR INTEGRATION, improves Measurement reliability.It adopts
With on-radiation measuring method, safety and environmental protection.
Description of the drawings
Attached drawing 1 is the structure diagram of the utility model；
Attached drawing 2 is that the utility model 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.
Specific embodiment：
The utility model is described in further detail 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, institute
Measuring tank 10 is stated as not isometrical measuring tank, 10 top of measuring tank, bottom have upper liquid outlet 4, safe mouth 9 and under go out
Liquid mouth 12, the upper liquid outlet 4, safe mouth 9 are connected between lower liquid outlet 12 by external pipe 23, runner 26；Upper liquid outlet 4
Proportioning valve A6 is connected on upper external pipeline 23, proportioning valve A6 right hand externals pipeline 23 connects tank top by threeway, safety valve 8
Safe mouth 9；23 lower end of external pipe connects runner 26 by threeway, and runner 26 passes through threeway, proportioning valve B14, valve respectively
D17 connections 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
It is also equipped with chemical reagent jet port 1, temperature sensor 2, interface of oil and gas sensor 3, oil-water interfaces sensor 5, pressure downwards
Sensor 7；Heating element 11 is wound on 10 outer wall of measuring tank；Runner connects suction flange 16, outlet(discharge) flange respectively at 26 both ends
13；10 bottom of measuring tank installation crude oil electric dewatering instrument 19；The measuring tank 10 is I-shaped not isometrical measuring tank, apart from pot bottom
It is respectively middle part necking down end height at h2, h4 height；It is divided into pool 20, oil-water interfaces 21, You Qu in measuring tank 10 from top to down
22nd, the interface of oil and gas 24, gas area 25；10 side of measuring tank is equipped with data acquisition control transmission unit, data acquisition control transmission
The data acquisition control transmission unit of the model DQBH-CK1 of grand celebration Bao He Petroleum Technology Co., Ltd production can be used in unit；
The data acquisition control transmission unit connects chemical reagent jet port 1, temperature sensor 2, the interface of oil and gas by cable respectively
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；Wherein proportioning valve B14 and proportioning valve A6 is linear scale valve, can be reached control by controlling its aperture size and pass through
The purpose of fluid flow can also be opened or completely closed completely.
Using the method that the split-phase flow control formula oil well three-phase flow on-line metering device is measured 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
Open valve D17 and proportioning valve A6, close proportioning valve B14 and valve C15, oil gas water three phase fluid from suction flange 16 into
Enter, enter by valve D17, feed liquor screen casing 18 in measuring tank, due to gravitational differentiation, be present with from top to bottom in measuring tank
Gas 25, the interface of oil and gas 24, oil 22, oil-water interfaces 21, the hierarchal arrangement of water 20, and slowly move up, and fluid is from proportioning valve A6
Outflow reaches outlet(discharge) flange 13 through pipeline and flows out；When the interface of oil and gas 24 rises to the top h5 positions of measuring tank 10, oil gas circle
Face 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
For time t1, gas phase can accumulate gradually on the top of measuring tank 10, and oppress oily area 22 and pool 20 is flowed out from lower liquid outlet 12,
When the arrival 10 bottom h1 positions of measuring tank of gasoil horizon 24, interface of oil and gas sensor 3 measures interface of oil and gas height H1, 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 variation 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 10 intermediate narrower portion bottleneck of measuring tank；Pressure sensor at this time
7 measure that pressure is P, 2 measured temperature of temperature sensor is T, according to PVT equations, 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 the interface of oil and gas passes
When sensor measures 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, and oil gas water three phase fluid enters from suction flange 16, enters meter by valve D17, screen casing 18
In measuring tank, it is present with gas area 25, the interface of oil and gas 24, oily area 22, grease from top to bottom due to gravitational differentiation, in measuring tank
Interface 21, the hierarchal arrangement in pool 20, and slowly move up, fluid is flowed out from proportioning valve A6, and outlet(discharge) flange is reached through pipeline
13 outflows, 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 starts timing, and time t1, water, which is met, to accumulate gradually in the bottom of measuring tank 10, and oppresses oil 22 gentle 25 and go out liquid from above
Mouth 4 flows out, and when oil-water interfaces 21 reach 10 top h5 positions of measuring tank, oil-water interfaces sensor 5 measures oil-water interfaces height
H5 opens by-passing valve C15, closes proportioning valve A6, valve D17 and proportioning valve B14, time t2, timing and terminates, measures the 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 heating element
11 and crude oil electric dewatering instrument 19 power, accelerate disengaging time, it is necessary to when adding in chemical reagent, oily chemical reagent filler 1 adds in
Appropriate reagent accelerates the separation of oil gas water three phase, when 21 translational speed of oil-water interfaces is met the requirements, oil-water interfaces sensor
5, measure water phase height H5；Water body volume V=S1* (the H5-h4+h2-H1)+s2* (h4-h2) of accumulation combines time of measuring and meter
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 the interface of oil and gas passes
When sensor measures 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, starts timing, time t1, oil gas water three phase fluid enters from suction flange 16, by valve
D17, screen casing 18 enter in batch box, from top to bottom can Hui Qi areas 25, the interface of oil and gas in measuring tank due to gravitational differentiation
24th, 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, through pipe
Line reaches outlet(discharge) flange 13 and flows out, and when the interface of oil and gas 24 rises to measuring tank top specific position h4, control proportioning valve A6 is beaten
Certain aperture is opened, closes 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
The part oil area 22 of necking down among measuring tank is mutually clipped in by carbonated drink, if the sign moved up occurs in gasoil horizon 24, is reduced
The certain apertures of proportioning valve A6 increase the certain apertures of proportioning valve B14, if the sign moved down occurs in gasoil horizon 24, subtract
The certain apertures of small scale valve B14 increase the certain apertures of proportioning valve A6, by feedback, remain that gasoil horizon 24 maintains meter
Near 10 top specific position h4 of measuring tank；Until the difference in height of 21 the two of the interface of oil and gas 24 and oil-water interfaces is more than or equal to specific
During numerical value, stop timing, time t2 measures oil phase time t=t2- t1；Measuring tank has intercepted the three-phase flow of a period of time at this time
Body, while power to heating element 11 and crude oil electric dewatering instrument 19 accelerates disengaging time, it is necessary to when adding in chemical reagent, oiling
It learns reagent filler 1 and adds in appropriate reagent, accelerate the separation of oil gas water three phase, after the gravitational differentiation of appropriate time, in oil phase
Moisture abjection is had, oil-water interfaces 21 can move up, when 21 translational speed of oil-water interfaces is met the requirements, oil-water interfaces sensing
Device 5 measures 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- of accumulation
H0), 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；Using multiple flow control mode when measuring oil phase, add up for a long time, oil phase is made to reach certain
It during magnitude, then measures, eliminates 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 (5)
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）For 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）.
2. a kind of 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）.
3. a kind of 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）.
4. a kind of 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）.
5. a kind of 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 respectively middle part necking down end height at pot bottom h2, h4 height for I-shaped measuring tank.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721568640.8U CN207420561U (en) | 2017-11-21 | 2017-11-21 | A kind of split-phase flow control formula oil well three-phase flow on-line metering device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721568640.8U CN207420561U (en) | 2017-11-21 | 2017-11-21 | A kind of split-phase flow control formula oil well three-phase flow on-line metering device |
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| CN207420561U true CN207420561U (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905779A (en) * | 2017-11-21 | 2018-04-13 | 大庆宝合石油科技有限公司 | Split-phase flow control formula oil well three-phase flow on-line metering device and method |
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2017
- 2017-11-21 CN CN201721568640.8U patent/CN207420561U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107905779A (en) * | 2017-11-21 | 2018-04-13 | 大庆宝合石油科技有限公司 | Split-phase flow control formula oil well three-phase flow on-line metering device and method |
| CN107905779B (en) * | 2017-11-21 | 2021-04-27 | 大庆宝合石油科技有限公司 | Online metering device and method for three-phase flow of split-phase flow control type oil well |
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