CN208140194U - Positive displacement oil gas water three phase flow separate phase flow rate on-line measurement device - Google Patents
Positive displacement oil gas water three phase flow separate phase flow rate on-line measurement device Download PDFInfo
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- CN208140194U CN208140194U CN201820331930.9U CN201820331930U CN208140194U CN 208140194 U CN208140194 U CN 208140194U CN 201820331930 U CN201820331930 U CN 201820331930U CN 208140194 U CN208140194 U CN 208140194U
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- 238000005259 measurement Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 10
- 239000012071 phase Substances 0.000 claims abstract description 87
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 239000007791 liquid phase Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 44
- 239000007792 gaseous phase Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 abstract description 14
- 230000001186 cumulative effect Effects 0.000 abstract description 12
- 238000001739 density measurement Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 9
- 238000000926 separation method Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 6
- 239000008346 aqueous phase Substances 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of positive displacement oil gas water three phase flow separate phase flow rate on-line measurement device, belongs to technical field of multiphase flow measurement.The device is mainly made of two volumetric standards with liquid level sensor, two single phase gas flowmeters, six control valves and multiple pipelines；Due to having used the volumetric standard of fixed volume, therefore the volume flow of liquid phase fluid in multiphase flow can be accurately measured, in conjunction with gasmetry, density measure and measurement of water ratio, the separate phase flow rate of oil gas water three phase flow, including cumulative volume flow and mass accumulation flow can further be extrapolated.Two volumetric standard alternating liquid collectings and drain, may be implemented the steady measurement of liquid flow rate in pipeline, ensure that the speed of measurement in the present apparatus, preferably to realize that on-line measurement is laid a good foundation.The present apparatus utilizes positive-displacement principle, and the complexity of mixed phase measurement is reduced when measuring, greatly reduces measurement cost while improving measurement accuracy.
Description
Technical field
The utility model relates to a kind of oil gas water three phase flow separate phase flow rate on-line measurement devices, belong to multiphase flow measurement skill
Art field.
Background technique
In industrial circle, measuring technique plays highly important role, such as petrochemical industry, environmental protection etc..Multiphase
Stream is widely present in numerous science and engineering field, and application is ahead of theoretical research.Multiphase flow detection technique is studied, first is that going out
In the needs of practical application, second is that it can provide important supplementary means for multiphase flow theoretical research.It is compared with single-phase flow, multiphase
Stream is since there is interfacial effects and relative velocity between different phases, and phase interface is all temporally and spatially to change at random
, therefore its flow behavior is increasingly complex.For a long time, diphasic stream parameter detects the important auxiliary as two phase flow theory research
Means are worldwide always the problem of a challenge, the referred to as ultimate challenge of process measurement, it has also become modern section
One important scientific research field of skill and advanced industrial country.It multiphase flow detection and monitors for related science research (such as two-phase
Flow Study on Heat and Mass Transfer etc.) and the safe and highly efficient operation of process device there is highly important theory significance and application value.
For the accurate measurement for realizing multiphase flow separate phase flow rate, conventional method is using separator, by multiphase flow each component
It is separated, then reuses mature single-phase flow instrument and each separate phase flow rate of monophasic fluid after separation is measured.This
Although kind of method accuracy is higher, separator usually requires very high economic input, and separation process usually require it is several
A hour reliably to be measured, is difficult to accomplish real-time online measuring.Therefore, for the online accurate measurement of heterogeneous fluid
It is still global problem.
By taking well head oil gas water three phase flow in oil exploitation as an example, the crude oil in oil exploitation production from well head output is main
Ingredient is oil-gas-water, may additionally contain silt, belongs to multiphase flow scope.For the oil-gas-in oil exploitation production
Water three-phase flow, the major parameter for needing to measure include temperature, pressure, void fraction (void fraction, moisture content, oil content), split-phase
The physical parameters such as the procedure parameters such as flow and density, salinity.It is related to the relevant technologies relative maturity of temperature and pressure measurement,
Existing industrial application mainstream technology need to only be directlyed adopt.But due to the complexity of multiphase flow itself, practical implementation
It is much ahead of theoretical research, is related to Phase Volume Fraction for Multi-phase Flow (void fraction, moisture content, oil content), separate phase flow rate and salinity etc.
The measurement of parameter, especially line Measurement Technique are still global problem.By taking flow measurement as an example, for the work of monophasic fluid
Industry can easily realize 1% or 0.5% precision with flowmeter mostly, but be directed to industrial multiphase stream, existing measurement method or business
The change most precision of measuring instrument is lower or measurement method is complicated, such as the Red invented by Wade good fortune International Co., Ltd
Eye multiphase flow measurement system, the difference which is utilized density realize the separation of gas-liquid, but the sensing that the system is related to
Device is more, and measurement method is complex.If being the on-line measurement essence for being able to achieve 10% in the universally recognized status of industry
Degree can then promote and apply in practice in industry.Although heterogeneous fluid is separated into monophasic fluid by separator to survey again
Amount can obtain very high precision, but since real-time is poor and input cost is excessively high, be difficult towards individual well well head oil-gas-water
Three-phase flow measurement is promoted, its value in the industrial production is greatly reduced.
Therefore, under conditions of without mutually separating realize the on-line measurement of oil gas water three phase flow separate phase flow rate, for a long time with
Carry out a problem and the important need in always Petroleum Production.
Utility model content
The purpose of this utility model is to overcome the shortcomings of prior art, propose a kind of positive displacement oil-gas-water three
Phase flow point phase flow rate on-line measurement device, the device can realize that separate phase flow rate of the oil gas water three phase flow under miscible conditions is online
Measurement.
To achieve the goals above, the utility model adopts the following technical solution：
A kind of positive displacement oil gas water three phase flow separate phase flow rate on-line measurement device mainly has liquid level sensor by two
Volumetric standard, two single phase gas flowmeters, six control valves and multiple pipelines composition, the first control valve (V1-1),
Third control valve (V1-2) and the 6th control valve (V2-3) collectively form the first valve group, the second control valve (V2-1), the 4th control
Valve (V2-2) processed and the 5th control valve (V1-3) collectively form the second valve group；Wherein, oil gas water three phase flow entrance leads to respectively
The first pipe equipped with the first control valve, the second pipe equipped with the second control valve and the three-phase at the top of the first volumetric standard is crossed to enter
Three-phase entrance connection at the top of mouth, the second volumetric standard；Gaseous phase outlet and the second volumetric standard top at the top of first volumetric standard
The gas phase entrance in portion is connected to by being equipped with first gas flowmeter with the third pipeline of third control valve；At the top of first volumetric standard
Gas phase entrance and the second volumetric standard at the top of gaseous phase outlet by being equipped with the of second gas flowmeter and the 4th control valve
The connection of four pipelines；First volumetric standard bottom, the second volumetric standard bottom leakage fluid dram respectively by being equipped with the 5th control valve
5th pipeline, the 6th pipeline equipped with the 6th control valve are connected to liquid-phase outlet；The volume V of two volumetric standards is equal and fixed
It is constant；
The signal of the liquid level sensor of the volumetric standard is used to trigger the opening and closing of two control valve groups；And when the first valve
When door group is opened, the second valve group is closed, the first volumetric standard is in collection liquid status, the second volumetric standard is in drain state；
When the first valve group is closed, the second valve group is opened, the first volumetric standard is in drain state, the second volumetric standard is in collection
Liquid status.
The characteristics of the utility model and beneficial effect are：
The present apparatus is simple for structure, and cost is relatively low, when carrying out multiphase fluid measurements using the present apparatus, due to having used fixation
The volumetric standard of volume, therefore the volume flow of liquid phase fluid in multiphase flow can be accurately measured, in conjunction with gasmetry, density
Measurement and measurement of water ratio, can further extrapolate the separate phase flow rate of oil gas water three phase flow, including cumulative volume flow and
Mass accumulation flow.Two volumetric standard alternating liquid collectings and drain, may be implemented liquid flow rate in pipeline in the present apparatus
Steady measurement, ensure that the speed of measurement, preferably to realize that on-line measurement is laid a good foundation.Moreover, the present apparatus is by positive displacement
The inspiration of flow measurement principle reduces the complexity of mixed phase measurement when measuring, big while improving measurement accuracy
The cost of measurement is reduced greatly.
Detailed description of the invention
Fig. 1 be the utility model proposes positive displacement multiphase flow on-line measurement device schematic diagram.
In Fig. 1, V1-1, V1-2 and V1-3 are three control valves of 1 place pipeline of volumetric standard, V2-1, V2-2 and
V2-3 is three control valves of 2 place pipeline of volumetric standard.
Specific embodiment
The technical solution of the utility model is further described below below in conjunction with the drawings and specific embodiments：
The utility model proposes device be mainly used to realize oil gas water three phase flow separate phase flow rate on-line measurement.Such as figure
Shown in 1, the present apparatus mainly has volumetric standard, two single phase gas flowmeters, six control valves of liquid level sensor by two
Door and multiple pipelines composition, the first control valve V1-1, third control valve V1-2 and the 6th control valve V2-3 collectively form first
Valve group, the second control valve V2-1, the 4th control valve V2-2 and the 5th control valve V1-3 collectively form the second valve group；Wherein,
Oil gas water three phase flow entrance is respectively by being equipped with the first pipe a of the first control valve V1-1, equipped with the second control valve V2-1's
Second pipe b is connected to the three-phase entrance E of the three-phase entrance A at 1 top of volumetric standard, 2 top of volumetric standard；Volumetric standard 1 pushes up
The gas phase entrance F at 2 top gaseous phase outlet B and volumetric standard in portion is by being equipped with single phase gas flowmeter 1 and third control valve V1-
2 third pipeline c connection；The gaseous phase outlet G at 2 top gas phase entrance C and volumetric standard at 1 top of volumetric standard is single by being equipped with
Phase gas flowmeter 2 is connected to the 4th pipeline d of the 4th control valve V2-2；Leakage fluid dram D, the volumetric standard 2 of 1 bottom of volumetric standard
The leakage fluid dram H of bottom passes through the 5th pipeline e equipped with the 5th control valve V1-3, the 6th pipe equipped with the 6th control valve V2-3 respectively
Road f is connected to liquid-phase outlet；The volume V of two volumetric standards is equal and immobilizes.
The opening and closing of two valve groups is triggered according to the signal of liquid level sensor in volumetric standard；And when the first valve group is opened
It opens, when the second valve group is closed, volumetric standard 1 is in collection liquid status, volumetric standard 2 and is in drain state；When the first valve group
When closing, the second valve group are opened, volumetric standard 1 is in drain state, volumetric standard 2 is in collection liquid status.
Each synthesizer part is conventional products in the on-line measurement device of the utility model embodiment.The specification of volumetric standard
(volume) determines that the flow of heterogeneous fluid that is, to be measured is bigger, the specification of volumetric standard according to the flow of heterogeneous fluid to be measured
It is bigger, conversely, the specification of volumetric standard is smaller.Assuming that liquid phase fluid volume flow is 1m3/ h can design a diameter
100mm, the volumetric standard of high 500mm, entrance and exit caliber can be designed as 50mm, and (industry spot well head is generally
50mm)。
The workflow of this on-line measurement device is：
1) data acquire：
1.1) make the first valve group (V1-1, V1-2 and V2-3) in the open state, the second valve group (V2-1, V2-2 and
V1-3 it) is in close state；The drain frequency n of record standard container 22=n2+ 1, n2For nonnegative integer (n2Initial value be 0)；
1.2) oil gas water three phase flow flows into volumetric standard 1 from top by pipeline a, and the gravity using fluid itself is being marked
Gas-liquid separation is automatically performed in quasi- container 1, pipeline c of the isolated gas phase through being connected at the top of the volumetric standard 1 enters volumetric standard 2
And the liquid collected before pushing in the volumetric standard 2 carries out drain (for initial situation, then carrying out idle discharge), in this process
In, volumetric standard 1 carries out liquid collecting, volumetric standard 2 carries out drain；Conventional single-phase gas by being installed on connecting pipeline c simultaneously
The gas flow of 1 pair of flowmeter separation measures；
1.3) whether hydraulically full by the liquid level sensor examination criteria container 1 installed on volumetric standard 1, when liquid level passes
When sensor detects that 1 liquid collecting of volumetric standard reaches full state, step 1.4) is executed；Otherwise return step 1.2)；
1.4) the first valve group (V1-1, V1-2 and V2-3) is closed, opened the second valve group (V2-1, V2-2 and V1-3),
The drain frequency n of record standard container 11=n1+ 1, n1For nonnegative integer (n1Initial value be 0)；
1.5) oil gas water three phase flow flows into volumetric standard 2 from top by pipeline b, and the gravity using fluid itself is being marked
Gas-liquid separation is automatically performed in quasi- container 2, pipeline d of the isolated gas phase through being connected at the top of volumetric standard 2 enters volumetric standard 1 simultaneously
The liquid collected before pushing in volumetric standard 1 carries out drain (for initial situation, then carrying out idle discharge), in the process, mark
Quasi- container 2 carries out liquid collecting, and volumetric standard 1 carries out drain；Conventional single-phase gas flowmeter by being installed on connecting pipeline d simultaneously
The gas flow of 2 pairs of separation measures；
1.6) whether hydraulically full by the liquid level sensor examination criteria container 2 installed on volumetric standard 2, when liquid level passes
When sensor detects that 2 liquid collecting of volumetric standard reaches full state, step 1.7) is executed, otherwise return step 1.5)；
1.7) judge whether current measuring section t is more than or equal to the measuring section t of setting0, if so, executing step
It is rapid 1.8), otherwise return step 1.1), so that volumetric standard 1 and volumetric standard 2 is entered reciprocal interleaved collection and empty the work of liquid phase
Make process；
1.8) the drain frequency n of difference SS container 1 and volumetric standard 21、n2；It is surveyed respectively using density measure instrument
Measure oily phase density ρo, aqueous phase densities ρwWith density of gas phase ρg；Execute step 2)；
2) data processing：
2.1) due to the volume of volumetric standard be it is certain, according to the signal of liquid level sensor in each volumetric standard, statistics
Measuring section t internal standard container 1 and volumetric standard 2 discharge the number (n i.e. in step 1.8 of liquid1、n2), then pass through formula
(1) it calculates to obtain and flows through the liquid phase cumulative volume flow of pipeline in time period t and be：
Qv=(n1+n2)V (1)
In formula, QvIt is tired for the liquid phase (oil phase and water phase) of multiphase flow in the on-line measurement device pipeline in measuring section t
Product volume flow, V are the volume of volumetric standard, t be measure (value of t can be by conventional unit time value, can also period
Sets itself according to the needs of use), n1And n2The respectively number of the respective drain of measuring section t internal standard container 1 and 2；
2.2) utilize obtained liquid phase cumulative volume flow Qv, in conjunction with moisture content, respectively obtain liquid phase in measuring section t
Middle oil is mutually and the cumulative volume flow of water phase is：
In formula, QvLiquid phase cumulative volume flow in the measuring section t calculated for step 2.1), QoFor in measuring section t
Oily phase cumulative volume flow, QwFor measuring section t inner aqueous phase cumulative volume flow, α is that (moisture content is water phase accumulation to moisture content
The ratio between volume flow and liquid phase cumulative volume flow can be obtained by conventional measurement means)；
2.3) obtained Q is utilizedoAnd Qw, in conjunction with the oily phase density ρ measuredoWith aqueous phase densities ρw, respectively obtain time of measuring
Oil is mutually in liquid phase in section t and the mass accumulation flow of water phase is：
In formula, MoFor phase mass accumulation flow oily in the t period, MwFor t period inner aqueous phase mass accumulation flow.
The multiphase flow that the gas flowmeter on gas phase pipeline by being mounted on connection volumetric standard 1 and volumetric standard 2 obtains
Gas phase cumulative volume flow Qg, in conjunction with the density of gas phase ρ measuredg, obtain the mass accumulation flow of gas phase in measuring section t
For：
Mg=ρgQg (4)
In formula, MgFor gas phase mass accumulation flow in the t period.
So far, the separate phase flow rate on-line measurement to oil gas water three phase flow, i.e., in time period t, the accumulation body of oily phase are completed
Product flow QoWith mass accumulation flow Mo, water phase cumulative volume flow QwWith mass accumulation flow MwAnd the accumulation body of gas phase
Product flow QgWith mass accumulation flow Mg。
The utility model proposes multiphase flow separate phase flow rate on-line measurement device due to having used the standard of fixed volume to hold
Device, therefore the volume flow of liquid phase fluid in multiphase flow can be accurately measured, in conjunction with gasmetry, density measure and moisture content
Measurement, can further extrapolate the separate phase flow rate of oil gas water three phase flow, including cumulative volume flow and mass accumulation flow.
Two volumetric standard alternating liquid collectings and drain, may be implemented the steady measurement of liquid flow rate in pipeline in the utility model,
It ensure that the speed of measurement, preferably to realize that on-line measurement is laid a good foundation.Moreover, the utility model is by positive-displacement principle
Inspire, reduced when measuring mixed phase measurement complexity, greatly reduced while improving measurement accuracy measure at
This.
Claims (1)
1. a kind of positive displacement oil gas water three phase flow separate phase flow rate on-line measurement device, which is characterized in that the device is mainly by two
A volumetric standard with liquid level sensor, two single phase gas flowmeters, six control valves and multiple pipelines composition, the
One control valve (V1-1), third control valve (V1-2) and the 6th control valve (V2-3) collectively form the first valve group, the second control
Valve (V2-1), the 4th control valve (V2-2) and the 5th control valve (V1-3) collectively form the second valve group；Wherein, oil-gas-water three
Phase inflow entrance is held by being equipped with first pipe, the second pipe equipped with the second control valve and the first standard of the first control valve respectively
Three-phase entrance connection at the top of three-phase entrance, the second volumetric standard at the top of device；Gaseous phase outlet at the top of first volumetric standard with
Gas phase entrance at the top of second volumetric standard is connected to by being equipped with first gas flowmeter with the third pipeline of third control valve；The
The gaseous phase outlet at the top of gas phase entrance and the second volumetric standard at the top of one volumetric standard by be equipped with second gas flowmeter and
4th pipeline of the 4th control valve is connected to；First volumetric standard bottom, the second volumetric standard bottom leakage fluid dram pass through set respectively
There are the 5th pipeline, the 6th pipeline equipped with the 6th control valve of the 5th control valve to be connected to liquid-phase outlet；Two volumetric standards
Volume V is equal and immobilizes；
The signal of the liquid level sensor of the volumetric standard is used to trigger the opening and closing of two control valve groups.
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| CN201820331930.9U CN208140194U (en) | 2018-03-12 | 2018-03-12 | Positive displacement oil gas water three phase flow separate phase flow rate on-line measurement device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507630A (en) * | 2018-03-12 | 2018-09-07 | 清华大学 | Positive displacement oil gas water three phase flow separate phase flow rate on-line measurement devices and methods therefor |
| CN112593925A (en) * | 2020-12-29 | 2021-04-02 | 四川速荣科技有限公司 | Oil field multiphase flow online measuring device and measuring method |
| WO2022143592A1 (en) * | 2020-12-31 | 2022-07-07 | 广东管辅能源科技有限公司 | Measurement method and device for multiphase flow mixed transportation |
-
2018
- 2018-03-12 CN CN201820331930.9U patent/CN208140194U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108507630A (en) * | 2018-03-12 | 2018-09-07 | 清华大学 | Positive displacement oil gas water three phase flow separate phase flow rate on-line measurement devices and methods therefor |
| CN112593925A (en) * | 2020-12-29 | 2021-04-02 | 四川速荣科技有限公司 | Oil field multiphase flow online measuring device and measuring method |
| WO2022143592A1 (en) * | 2020-12-31 | 2022-07-07 | 广东管辅能源科技有限公司 | Measurement method and device for multiphase flow mixed transportation |
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