CN106092225A - Measuring method and sensor thereof for oil gas water three phase circulation parameter - Google Patents
Measuring method and sensor thereof for oil gas water three phase circulation parameter Download PDFInfo
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- CN106092225A CN106092225A CN201610362533.3A CN201610362533A CN106092225A CN 106092225 A CN106092225 A CN 106092225A CN 201610362533 A CN201610362533 A CN 201610362533A CN 106092225 A CN106092225 A CN 106092225A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
Abstract
The present invention provides a kind of measuring method for oil gas water three phase circulation parameter and sensor thereof, and described sensor includes measuring pipe and electrode group；Described electrode group is at least two groups, and is sticked in relative position relationship at the outer wall of described measurement pipe, electrode and an external electrode in often group electrode all includes one, and described external electrode is located on described interior surrounding them, and described inside and outside electrode forms " returning " font structure.Compared to prior art, the measuring method for oil gas water three phase circulation parameter of present invention offer and sensor thereof, by optimizing design capacitance tomography (ECT) sensors electrode structure, the sensitivity field controlling to measure is interval, can realize, merely with capacitance, just calculating moisture content and the gas liquid ratio of oil-gas-water three-phase flow.Specifically, " returning " word electrode structural designs of inventive sensor, in conjunction with single " time " word electrode mode measurement and comparative electrode group measurement pattern, it is possible to achieve the measurement to oil gas water three phase annular flow key parameter.
Description
Technical field
The present invention relates to the technical field measuring Apparatus and method for of oil gas water three phase flow amount parameter in oil and gas industry, special
Do not relate to a kind of measuring method for oil-gas-water three phase circulation parameter and sensor thereof.
Background technology
Oil-gas-water multiphase flow is flow media common in oil and gas industry, its mainly comprise liquid hydrocarbon, natural gas and
Mineralized water.Important step in the online the most accurately metering always oil and gas industry of oil gas water three phase flow amount, it is to oil gas
The exploration hidden is respectively provided with significance with reserves monitoring.In China's offshore oil and gas industry, the traditional gas gathering station of life-time service is to solidifying
Analysis natural gas separates, then uses single-phase flow instrument to measure the medium after separating.Though this way can ensure one
Devise a stratagem accuracy of measurement, but its drawback is the most fairly obvious.The construction at separate measurement station not only somewhat expensive a, it is often more important that exploitation
Block is typically only capable of building a separate measurement station, and the numerous natural gas well yields in this block can only be counted the most in turn
Amount, and then the demand that every a bite well yield information is monitored by oil company in real time cannot be met.Therefore, study both at home and abroad
Person wishes to research and develop a kind of industrial technology can accurately measured oil gas water three phase flow amount under the conditions of non-separation always.
Capacitance chromatography imaging (day ectrical Capacitance Tomography, ECT) is the important of multiphase flow measurement
Method.It relies on the array electrode a series of measurement capacitance of acquisition being arranged in tested field domain border, and utilizes capacitance measurement
In value and tested field domain, relation between dielectric distribution carries out the reconstruction of image, obtains the distributed image of medium in tested field domain.
And sensing system is the hardware core part of ECT.At present, most sensor design is only applicable to the measurement of two phase flow, or
The single key parameter of oil gas water three phase flow can only be measured, such as solution-air ratio.And for engineering generally exists oil-gas-
The sensor design scheme that water three-phase annular flow is not suitable for.
Summary of the invention
The invention provides a kind of measuring method for oil-gas-water three phase circulation parameter and sensor thereof, it is possible to solve
Prior art does not has a kind of simple in construction, applicable can measure each phase parameter sensor in oil-gas-water three phase circulation simultaneously
And the technical problem of measuring method.
For solving above-mentioned technical problem, the technical scheme that the present invention uses is: provide one for oil-gas-water three
The capacitance imaging sensor of phase circulation parameter measurement, described sensor includes measuring pipe and electrode group；Described electrode group is at least
Two groups, and be sticked in relative position relationship at the outer wall of described measurement pipe, electrode and a dispatch from foreign news agency in often group electrode all includes one
Pole, described external electrode is located on described interior surrounding them, and described inside and outside electrode forms " returning " font structure.
According to one preferred embodiment of the present invention, described sensor includes 8 electrode groups, and described 8 electrode groups are uniform battle array
Column distribution is in the outer wall ring week of described measurement pipe.
According to one preferred embodiment of the present invention, the material of described measurement pipe has insulated enclosure characteristic.
According to one preferred embodiment of the present invention, the material of described measurement pipe is polyether-ether-ketone.
According to one preferred embodiment of the present invention, described electrode group all uses Copper Foil or other good conductive metallic material to make.
According to one preferred embodiment of the present invention, described sensor also includes supporting shell, and described support shell props up and stays at
The described outside measuring pipe and described electrode group, is used for protecting described electrode group, shields stray capacitance noise, and by sensor
It is fixedly installed in pipeline to be measured.
According to one preferred embodiment of the present invention, the cross section of described measurement pipe is circular.
According to one preferred embodiment of the present invention, described external electrode is along measuring the axially extended length of pipe and measuring pipe interior diameter
Ratio be 1: 1；The spacing distance of described interior electrode and described external electrode is 2mm.
For solving above-mentioned technical problem, another technical solution used in the present invention is: provide one to utilize above-mentioned enforcement
The method of the sensor measurement oil-gas-water three phase circulation parameter described in any one of example, described method includes:
Oil-the water utilizing single electrode group measurement pattern to obtain in the ring-type flow liquid of three-phase compares parameter；
At least one pair of electrode group measurement pattern being oppositely arranged is utilized to obtain the vapor/liquid ratio parameter in the ring-type flow liquid of three-phase；
It is calculated each phase content in the ring-type flow liquid of three-phase than parameter and vapor/liquid ratio parameter according to described oil-water.
According to one preferred embodiment of the present invention, described single electrode group measurement pattern is utilized to obtain in the ring-type flow liquid of three-phase
Oil-water ratio is in the step of parameter, and in using, electrode is as exciting electrode, and external electrode is as measuring electrode；Described utilization at least
The electrode group measurement pattern being oppositely arranged is obtained in the step of the vapor/liquid ratio parameter in the ring-type flow liquid of three-phase, electrode in using
As exciting electrode, the interior electrode of another electrode group arranged corresponding thereto is as measuring electrode, and the external electrode of two electrode groups divides
Other ground connection.
The invention has the beneficial effects as follows: be different from the situation of prior art, the present invention provide for oil-gas-water three-phase
The measuring method of circulation parameter and sensor thereof, by optimizing design ECT sensor electrode structure, control the sensitive place measured
Between (sensing penetration depth), can realize, merely with capacitance, just calculating the aqueous of oil gas water three phase flow
Rate and vapor/liquid ratio, specifically, " returning " word electrode structural designs of inventive sensor, in conjunction with single " time " word electrode mode measurement
With comparative electrode measurement pattern, it is possible to achieve the measurement to oil-gas-water three-phase annular flow key parameter.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only some embodiments of the present invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is present invention capacitance imaging sensor one preferred embodiment for oil-gas-water three phase circulation parameter measurement
Structural representation；
Fig. 2 be in Fig. 1 embodiment sensor with support shell structure sectional view；
Fig. 3 is the schematic flow sheet of oil-gas-water three phase circulation measurement method of parameters one preferred embodiment of the present invention；And
Fig. 4 is the concrete steps flow chart of measuring method in Fig. 3 embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the present invention is described in further detail.Implement it is emphasized that following
Example is merely to illustrate the present invention, but is not defined the scope of the present invention.Same, following example are only the portion of the present invention
Point embodiment and not all embodiments, the institute that those of ordinary skill in the art are obtained under not making creative work premise
There is other embodiments, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, Fig. 1 is that the present invention is excellent for the capacitance imaging sensor one of oil-gas-water three phase circulation parameter measurement
Select the structural representation of embodiment.This sensor includes but not limited to that following structure forms: measure pipe 100 and electrode group 200.
Specifically, electrode group 200 at least two groups, and it is sticked at the outer wall measuring pipe 100 in relative position relationship,
Electrode 210 and an external electrode 220 in often group electrode all includes one, external electrode 220 is located on around interior electrode 210, inside and outside electrode
Form " returning " font structure.Preferably, interior electrode 210 is in rectangular configuration, external electrode 220 structure in the form of a ring.Electrode group 200 is passed through
Signal transmission cable is connected with outside ECT signal collecting device.
Preferably, this sensor includes 8 electrode groups 200, and 8 electrode groups are that uniform array is distributed in measurement pipe 100
Outer wall ring week.Electrode group 200 the most all uses copper foil material to make, it is also possible to for titanium alloy foil or aluminium foil etc..
Adjust the interior electrode 210 of electrode group 200, external electrode 220 be placed with position and patch width, sensor can be controlled
Detection perceived depth, it is achieved only measure under single " time " word electrode group measurement pattern ring-type flow liquid mutually in oil, water containing rate time, no
Affected by internal gas phase content.It is further preferred that this external electrode 220 is along measuring the axially extended length of pipe 100 and measuring pipe
The ratio of interior diameter is 1: 1；And the spacing distance of interior electrode 210 and external electrode 220 is 2mm.Measuring the concrete size of pipe 100 can be with
The change of pipeline caliber to be measured and design, the caliber occurrence measuring pipe 100 is not limited herein.
Measuring pipe 100 shape of cross section can be rectangle, circular and irregularly shaped etc., but preferably circular.
The material measuring pipe 100 has the exhausted water characteristic of insulation, and preferably material is polyether-ether-ketone (English name poly ether
Ether ketone, is called for short PEEK).Certainly measuring pipe 100 can also be other exhausted water insulant, those skilled in the art
Understanding within the scope of, can choose voluntarily, will not enumerate herein.The wall thickness measuring pipe 100 can be according to internal multiphase flow
Body calculation of pressure determines, is the most also not specifically limited.
Referring to sensor in Fig. 2, Fig. 2 Fig. 1 embodiment with supporting the structure sectional view of shell, this sensor also includes
Support shell 300, support 300, shell and stay at measurement pipe 100 and the outside of electrode group 200, for shield electrode group 200,
Shielding stray capacitance noise, and sensor is fixedly installed in pipeline to be measured.In figure, 310 is the through hole for installing.
Sensor in this embodiment has two kinds of measurement patterns: single electrode group measurement pattern and comparative electrode group measure mould
Formula, two kinds of measurement patterns can obtain the oil-water in the ring-type flow liquid of three-phase respectively than parameter and vapor/liquid ratio parameter.At single electrode
In group measurement pattern, in using, electrode 210 is as exciting electrode, and external electrode 220 is as measuring electrode；And comparative electrode group is measured
In pattern, in using, electrode 210 is as exciting electrode, and the interior electrode 210 of another electrode group arranged corresponding thereto is as measurement
Electrode, the external electrode 220 of two electrode groups ground connection respectively, for increasing the linearity and the sensitivity field uniformity that interior electrode 210 is measured.
And concrete measuring method refers to the specific descriptions of subsequent embodiment.
Compared to the situation of prior art, the electric capacity for oil-gas-water three phase circulation parameter measurement that the present invention provides becomes
As sensor, by optimizing design ECT sensor electrode structure, control the interval (sensing of sensitivity field measured
Penetration depth), can realize, merely with capacitance, just calculating moisture content and the solution-air of oil gas water three phase flow
Ratio, specifically, " returning " word electrode structural designs of inventive sensor, in conjunction with single " time " word electrode mode measurement and comparative electrode
Measurement pattern, it is possible to achieve the measurement to oil-gas-water three-phase annular flow key parameter.
Further, the embodiment of the present invention also provides for a kind of measuring method enforcement for oil-gas-water three phase circulation parameter
Example, refers to the schematic flow sheet that Fig. 3, Fig. 3 are oil-gas-water three phase circulation measurement method of parameters one preferred embodiments of the present invention.
The method includes but not limited to following steps.
Step S310, the oil-water utilizing single electrode group measurement pattern to obtain in the ring-type flow liquid of three-phase compares parameter.
In step S310, in using, electrode is as exciting electrode, and external electrode is as measuring electrode.Use above-described embodiment
In 8 electrode group structures, can have 8 measured values, it is thus achieved that oil-gas-water three-phase annular flow moisture content key parameter.
Step S320, utilize at least one pair of electrode group measurement pattern being oppositely arranged obtain the gas in the ring-type flow liquid of three-phase-
Liquor ratio parameter.
In step s 320, it is preferred to use 4 pairs of electrode groups measure (i.e. 8 phase inner electrode).Totally 4 capacitances,
Calculate the vapor/liquid ratio key parameter obtaining oil-gas-water three phase circulation.In using, electrode is as exciting electrode, arranges corresponding thereto
The interior electrode of another electrode group as measuring electrode, the external electrode of two electrode groups ground connection respectively, with the measurement of electrode in improving
Linear and sensitivity field uniformity.In this step, utilize 8 groups of " returning " word electrodes to amount to 16 electrodes, 120 surveys of acquisition can be measured
Value, then the qualitative picture reconstructed results of oil-water two phase flow is obtained through Linear back-projection (LBP) algorithm.
Step S330, is calculated in the ring-type flow liquid of three-phase than parameter and vapor/liquid ratio parameter according to oil-water and respectively contains mutually
Rate.
See also the concrete steps flow chart that Fig. 4, Fig. 4 are measuring methods in Fig. 3 embodiment.Survey in this embodiment
Metering method, can obtain oil-gas-water three-phase annular flow key parameter by twice measurement.Measure for the first time and use single " time "
Word electrode mode measurement, is measured by interior electrode excitation, external electrode, and interior electrode is gathered measurement capacitance, then obtains through LBP algorithm
The qualitative picture reconstructed results of oil-water two phase flow, it is thus achieved that measure ring-type flow liquid mutually in oil, water is containing rate；Second time is measured and is used
Comparative electrode measurement pattern, utilizes in 8 groups of " returning " word structure electrodes electrode measurement in electrode excitation in a group, relatively group, dispatch from foreign news agency
Pole earthing mode, in conjunction with for the first time measurement result, it is thus achieved that each phase of oil gas water three phase flow disorder of internal organs containing rate.
Compared to prior art, the method utilizes the sensor construction that structure is unique, can measure easily fuel-displaced-
Each phase containing rate parameter in the ring-type flow liquid of air-water three-phase.There is the highest practical value.
The foregoing is only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilization is originally
Equivalent structure or equivalence flow process that description of the invention and accompanying drawing content are made convert, or are directly or indirectly used in what other were correlated with
Technical field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. the capacitance imaging sensor for oil-gas-water three phase circulation parameter measurement, it is characterised in that described sensor
Including measuring pipe and electrode group；Described electrode group is at least two groups, and is sticked at described measurement pipe in relative position relationship
Outer wall, electrode and an external electrode in often group electrode all includes one, described external electrode is located on described interior surrounding them, described in,
External electrode forms " returning " font structure.
Sensor the most according to claim 1, it is characterised in that described sensor includes 8 electrode groups, described 8 electricity
Pole group is the outer wall ring week that uniform array is distributed in described measurement pipe.
Sensor the most according to claim 1, it is characterised in that the material of described measurement pipe has insulated enclosure characteristic.
Sensor the most according to claim 3, it is characterised in that the material of described measurement pipe is polyether-ether-ketone.
Sensor the most according to claim 1, it is characterised in that described electrode group all uses Copper Foil or other good conductive gold
Belong to material to make.
Sensor the most according to claim 1, it is characterised in that described sensor also includes supporting shell, described support
Shell props up and stays at the described outside measuring pipe and described electrode group, is used for protecting described electrode group, shields stray capacitance noise,
And sensor is fixedly installed in pipeline to be measured.
Sensor the most according to claim 1, it is characterised in that the cross section of described measurement pipe is circular.
Sensor the most according to claim 1, it is characterised in that described external electrode along measure manage axially extended length with
The ratio measuring pipe interior diameter is 1: 1；The spacing distance of described interior electrode and described external electrode is 2mm.
9. the method utilizing sensor measurement oil-gas-water three phase circulation parameter described in any one of claim 1-8, its
Being characterised by, described method includes:
Oil-the water utilizing single electrode group measurement pattern to obtain in the ring-type flow liquid of three-phase compares parameter；
At least one pair of electrode group measurement pattern being oppositely arranged is utilized to obtain the vapor/liquid ratio parameter in the ring-type flow liquid of three-phase；
It is calculated each phase content in the ring-type flow liquid of three-phase than parameter and vapor/liquid ratio parameter according to described oil-water.
Method the most according to claim 9, it is characterised in that described utilize single electrode group measurement pattern obtain three-phase ring
Oil in shape flow liquid-water ratio is in the step of parameter, and in using, electrode is as exciting electrode, and external electrode is as measuring electrode；Described
At least one pair of electrode group measurement pattern being oppositely arranged is utilized to obtain in the step of the vapor/liquid ratio parameter in the ring-type flow liquid of three-phase,
In using, electrode is as exciting electrode, and the interior electrode of another electrode group arranged corresponding thereto is as measuring electrode, two electrode groups
External electrode respectively ground connection.
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| CN108508066A (en) * | 2018-04-03 | 2018-09-07 | 烟台北方星空自控科技有限公司 | A kind of capacitance probe |
| CN108828028A (en) * | 2018-08-02 | 2018-11-16 | 深圳市联恒星科技有限公司 | A kind of capacitance type sensor and its structure parameter optimizing method measuring two-phase flow containing rate |
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