CN103791952B - Oil field ground wet steam flow dryness measurement device - Google Patents
Oil field ground wet steam flow dryness measurement device Download PDFInfo
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- CN103791952B CN103791952B CN201210419330.5A CN201210419330A CN103791952B CN 103791952 B CN103791952 B CN 103791952B CN 201210419330 A CN201210419330 A CN 201210419330A CN 103791952 B CN103791952 B CN 103791952B
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Abstract
The present invention is oil field ground wet steam flow dryness measurement device, is related to a kind of device of the data such as flow for measuring gas-liquid two-phase fluid-mixing.The problems such as device measuring accuracy existing in actual use that it solves the parameters such as the pressure of wet saturated steam of existing measurement oil field gas injection, flow, mass dryness fraction is relatively low, accuracy is poor and structural volume is big.It includes current divider, separator and measuring mechanism, and described current divider is connected with the entrance of described separator, and described measuring mechanism is provided with measuring part in the export pipeline of described separator, and described current divider is multiple spot multi-stage diffluence device.The present invention have the advantages that weight and volume it is small, it is compact-sized, be easy to make, safeguard and it is easy to use, measurement accuracy is high, be mainly used in the relevant parameter for the steam water two-phase fluid that measuring and calculating oil field uses.
Description
Technical field
Of the invention and a kind of device for being used to measure fluid, it is more particularly to a kind of to be used to measure gas-liquid two-phase fluid-mixing
The device of the data such as flow.
Background technology
At present, with the field size application of the new technologies such as oil field steam soak, steam drive, skill is measured to steam parameter
The industrial applications of art it is also proposed higher requirement, and the steam flow scope and mass dryness fraction scope of monitoring are also more extensive, different
Thermal recovery block, different thermal recovery technologies to steam parameter requirement also make a world of difference, to measurement apparatus monitoring parameters section require
It is wider model, more accurate.But because the steam of oil field gas injection is essentially all wet saturated steam, pressure, flow, mass dryness fraction, pipe
The change of any one parameter such as footpath can all cause the two phase flow signals of wet saturated steam that huge change occurs, and influence oil field gas injection
Flow, mass dryness fraction measurement error.No. 98113068 " shunting split-phase type two-phase fluid flows of existing Xi'an Communications University
" Asia is faced for the 200620009043.7 of measuring method " patent and Oil Extraction Technology Institute of SINOPEC Shengli Oilfield Co., Ltd.
The technologies such as boundary's steam-water twin phases flowmeter " patent, steam parameter in heavy crude heat extraction different process is used for by orifice plate sampled fluid
In metering, the deficiencies of measuring accuracy is relatively low, accuracy is poor and structural volume is big is primarily present.
The content of the invention
The purpose of the present invention is to overcome existing fluid measurement technology to be applied to measure steam ginseng in heavy crude heat extraction different process
It is insufficient existing for number, there is provided measurement apparatus a kind of reasonable in design and that disadvantages mentioned above can be improved.
The purpose of the present invention can be realized by following technical solution：
The measurement apparatus, including current divider, separator and measuring mechanism, described current divider enter with described separator
Mouth is connected, and described measuring mechanism is provided with measuring part in the export pipeline of described separator, and described current divider is
Multiple spot multi-stage diffluence device.It is to improve the generation of steam sampling by the effect that described diverter designs are multiple spot multi-stage diffluence device
Table, while the fluid sample down-sampled.So-called " multiple spot " of described multiple spot multi-stage diffluence device is exactly in the device stream
The point of 2 or more than 2 is sampled shunting on logical section, the sample to ensure the shunting body as sampling sample or for sampling
Product are representative；So-called " multistage " be exactly by the device to shunting body again, 2 times or more than 2 times carry out 2 or more than 2 points
Sampling shunting, shunt ratio is further reduced, to reach preferable diverting coefficient value.The present apparatus is used for steam-water two-phase fluid
During measurement, after described multiple spot multi-stage diffluence device distribution, a small gangs of for accounting for 1%-20% total flows has and represented fluid
Property fluid is split out, and most of fluid then flows to downstream along pipeline through throttling element；Shunting body is satisfied after separator separates
Typically flowed out with steam from separator top, and saturation water then typically flows out from separator bottom；The steam and water one of shunting body
As mixed again after single-phase flow flowmeter measurement respectively, most afterwards after current limiting element with without be used for sampling fluid
Converge.
The purpose of the present invention can also open realization by following technical solution：
Described multiple spot multi-stage diffluence device includes main pipeline and multiple diversion mechanisms, and described each diversion mechanism includes
Entrance and exit, it, which is exported, includes the outlet that is connected with described main pipeline and shunting body exports, its entrance and direction of flow
Pipeline connects, and described main pipeline is provided with described diversion mechanism, and the outlet of described separator is connected with described main pipeline
Connect.The effect that described multiple spot multi-stage diffluence device designs multiple diversion mechanisms is realized to entering the fluid of described main pipeline
Multiple spot multi-stage diffluence samples, to ensure the representativeness of shunting body and reduce shunt ratio.Setting the effect of described main pipeline is
As relevant parameter when realizing that outside fluid enters the main pipeline with being protected from the relevant parameter of the fluid after main pipeline outflow
Consistent part is held, to reduce described diversion mechanism and described separator to flowing through the outside fluid of described main pipeline
The influence of parameters.It is described that described diversion mechanism sets the effect for the outlet being connected with described main pipeline to flow through
Diversion mechanism reenters described main pipeline without the fluid for sampling, to reduce described diversion mechanism to flowing through
The influence change that the outside fluid relevant parameter for the main pipeline stated is brought.Described diversion mechanism sets the effect that shunting body exports
It is to realize that the sampled fluid for flowing through described diversion mechanism fluid enters other processing mechanisms, is such as connected with the diversion mechanism another
The mechanism such as outer diversion mechanism or separator, sampled fluid is for further processing with realizing.The entrance of described diversion mechanism
The effect being connected with the pipeline of direction of flow is that the fluid for enabling to be sampled enters the diversion mechanism.Described main pipeline is set
The effect for putting described diversion mechanism is that first time split-stream sampling is realized to outside fluid.Make outlet and the institute of described separator
The effect that the main pipeline stated is connected is the shunting body after separator is handled is reentered described master after completing measurement
Converge in pipeline with other fluids, to reduce the shadow that separator is brought to the outside fluid relevant parameter for flowing through described main pipeline
Ring change.Described diversion mechanism is provided with the autonomous channel of the same cross-sectional of even number axial symmetry distribution, diversion mechanism shunting
Body outlet includes the axisymmetric described autonomous channel of even number.Described diversion mechanism sets the phase of even number axial symmetry distribution
Effect with the autonomous channel in section is that the internal fluid channels for making described diversion mechanism are formed in the passage flow section
Even number is relative to the symmetrical same shape of the kernel of section and the autonomous channel of the small bore of area, so as to be somebody's turn to do to entering
The fluid of diversion mechanism realizes sampling shunting, to ensure the sample representativeness of shunting body.Make diversion mechanism shunting body outlet bag
The effect for including the axisymmetric described autonomous channel of even number is to make passage flow of the shunting body relative to described diversion mechanism
The center in section is distributed symmetrically, so as to ensure the sample representativeness of shunting body.Described diversion mechanism shunting body outlet bag
The ratio that the axisymmetric described autonomous channel quantity of the even number that includes accounts for the described autonomous channel sum of the diversion mechanism is
20%-30%.Described shunting body is exported the axisymmetric described autonomous channel quantity of the even number included and account for the diversion mechanism
The ratio of described autonomous channel sum can be while ensureing that shunting body has sample representativeness for 20%-30%, can
Effectively obtain the shunting body of appropriate amount.Shunting body shunt ratio such as the diversion mechanism of the first order is 20%-30%, then right again
This 20-30% first order shunting body carries out second diffluence, then takes its 20%-30% as final shunting body, so last point
Stream ratio can maintain 10% or so.Described diversion mechanism includes circular pipe housing, described only in the pipeline shell
The section of vertical passage is fan-shaped or ring sector.The internal fluid channels of described diversion mechanism are designed as circle and will be described
Autonomous channel, which is designed as fan-shaped or ring sector, has the advantages of ensureing shunting body sample representativeness and simplifying structure.Described is each
Eccentric orifice plate is provided with described main pipeline after connector of the diversion mechanism on described main pipeline.In described supervisor
The effect that described eccentric orifice plate is set in road is to balance the resistance of main line and distribution pipeline so that incoming flows evenly through institute
The autonomous channel stated, improve the sample representativeness of shunting body, so as to improve the accuracy of measurement data.Described diversion mechanism is
2, one of diversion mechanism is arranged at described main pipeline port, the outlet of the diversion mechanism respectively with described main pipeline
Be connected with the entrance of another diversion mechanism, the outlet of described another separating mechanism respectively with described main pipeline and described
Separator is connected, and is set in the described main pipeline after connector of the described each diversion mechanism on described main pipeline
There is eccentric orifice plate.Described diversion mechanism is designed as 2, that is, is designed as carrying out outside fluid the structure of two-stage shunting sampling
The advantages of with disclosure satisfy that the simplified and convenient manufacture of most practical application sampling and measuring requirements, structure, maintenance, using.It is described
A diversion mechanism to be arranged at the effect of described main pipeline port be that first time split-stream sampling is realized to outside fluid.It is described
The effect that is connected respectively with the entrance of described main pipeline and another diversion mechanism of outlet of the diversion mechanism be to make not having
Fluid for sampling enters described main pipeline, shunting body is entered the diversion mechanism of next stage.Described another seperator
The effect that the outlet of structure is connected with described main pipeline and described separator respectively is shunting body to be carried out again after sub-sampling,
The shunting body of needs is entered described separator, remaining fluid is entered described main pipeline.Described each diversion mechanism
The effect provided with eccentric orifice plate is by described inclined in described main pipeline after connector on described main pipeline
Heart orifice plate balances the resistance of main line and distribution pipeline so that incoming flows evenly through described autonomous channel, improves shunting body
Representativeness, so as to improve the accuracy of measurement data.Described diversion mechanism includes circular pipe housing, in the pipeline shell
The autonomous channel of identical sector crosssection including 16 axial symmetry distributions, the outlet of described diversion mechanism shunting body include 4 axles
Symmetrical described autonomous channel.The internal fluid channels of described diversion mechanism are designed as circle and independently lead to described
Road is designed as fan-shaped the advantages of having guarantee shunting body representative and simplifying structure.By the circular pipe shell of described diversion mechanism
Internal fluid passage, which is divided into the autonomous channel described in 16 and exports described diversion mechanism shunting body, includes 4 axial symmetry
Described autonomous channel have and disclosure satisfy that most practical application sampling and measuring requirements, simplify structure, keep rational sampling
The advantages of ratio.Described diversion mechanism includes circular pipe housing, and the phase of 16 axial symmetry distributions is included in the pipeline shell
With the autonomous channel in ring sector section, the outlet of described diversion mechanism shunting body includes the axisymmetric autonomous channel described in 4.
The internal fluid channels of described diversion mechanism, which are designed as circle and described autonomous channel are designed as into ring sector, has guarantor
The advantages of demonstrate,proving shunting body representativeness and simplifying structure.The circular pipe housing fluid passage of described diversion mechanism is divided into
Autonomous channel described in 16 and export described diversion mechanism shunting body to include 4 axisymmetric described autonomous channels and have
Most practical application sampling and measuring requirements are disclosure satisfy that, simplifies structure, kept for the advantages of rational sampling ratio.Described survey
Measuring mechanism includes Gas measurement component, liquid measure part and pressure transmitter, and described pressure transmitter is arranged at described
In current divider.Described Gas measurement component is used for the flow for measuring the gas in the shunting body after described separator separation
Deng relevant parameter.Described liquid measure part is used for the stream for measuring the liquid in the shunting body after described separator separation
The relevant parameters such as amount.Described pressure transmitter is used for the pressure for measuring outside fluid.Described Gas measurement component includes text
Venturi, pressure transmission hard metal conduit and differential flowmeter in gas service, described liquid measure part include Venturi tube, pressure transmission
With hard metal conduit and differential flowmeter in liquid service, described pressure transmitter includes pressure transmission and passed with hard metal conduit and pressure
Sensor.By there is structure from described Gas measurement component, liquid measure part and pressure transmitter that the component is formed
Simply, the advantages of measurement accuracy is high and easy to install.Provided with described differential flowmeter in gas service, pressure sensor, liquid
The data collecting system that body differential pressure flowmeter is connected.The effect for setting described data collecting system is realized to described survey
Measure the electrical signal collection conversion process of part transmission.Shown provided with the data being connected with data collecting system and storage system.
Data described in setting are shown and the effect of storage system is that storage is realized to gathered data and is easy to use.
Beneficial effects of the present invention：, can not only as a result of component parts such as described multiple spot multi-stage diffluence devices
Solves the measurement of oil field gas injection moist steam big flow, it is easy to accomplish the good representativeness of shunting body and reduction use shunting body
Amount, the volume of the devices such as separator can be reduced and ensure measurement accuracy, and be easily achieved and reduce the present apparatus to outside fluid
The influence of change of relevant parameter, measurement error can be reduced and realize the structure for simplifying part flow arrangement.So the present invention has weight
Amount and small volume, compact-sized, the advantages that being easy to make, safeguarding and be easy to use, measurement accuracy is high.
Brief description of the drawings：
Fig. 1 is the composition pipeline structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the splitter inlet end A-A flow area schematic diagrames of the embodiment of the present invention；
Fig. 3 is the current divider outlet end structure schematic diagram of the embodiment of the present invention；
Fig. 4 is the overall structure diagram of the embodiment of the present invention；
Fig. 5 is fundamental diagram of the embodiment of the present invention.
1, current divider in figure, 2, separator, 3, Gas measurement component, 4, pressure transmitter, 5, liquid measure portion
Part, 6, data collecting system, 7, data are shown and storage system, 8, mixing four-way, 9, connecting tube, 10, connecting tube, 11, point
Flow mechanism, 12, diversion mechanism, 13, main pipeline, 14, eccentric orifice plate, 31, Venturi tube, 32, differential flowmeter in gas service, 41, pressure
Force snesor, 51, Venturi tube, 52, differential flowmeter in liquid service, 110, flow area center, 111, pipeline shell, 112, solely
Vertical passage, 1121, autonomous channel, 1122, autonomous channel, MG, gas phase total flow, ML, liquid phase total flow, MG2, in main pipeline
Gas phase flow rate, ML2, liquid phase flow in main pipeline, MG3, differential flowmeter in gas service measurement gas phase flow rate, ML3, liquid differential pressure stream
The liquid phase flow of flowmeter measurement.
Embodiment：
The present invention is further described with reference to the accompanying drawings and examples.
The oil field ground wet steam flow dryness measurement device, including current divider 1, separator 2 and measuring mechanism, data are adopted
Collecting system 6, data are shown and storage system 7, and described current divider 1 is connected with the entrance of described separator 2, described survey
Measuring mechanism is provided with measuring part 3,5 in the outlet connecting pipe road of described separator 2, and described current divider 1 is that multiple spot is multistage
Part flow arrangement；The multiple spot multi-stage diffluence device includes main pipeline 13 and 2 diversion mechanisms 11,12, wherein diversion mechanism 11 are set
In the port of described main pipeline 13, the diversion mechanism 11 outlet respectively with described main pipeline 13 and another diversion mechanism 12
Entrance be connected, described another diversion mechanism 12 outlet respectively with described main pipeline 13 and the described phase of separator 2
Connect, in the described main pipeline 13 after connector of the described each diversion mechanism 11,12 on described main pipeline 13
Provided with eccentric orifice plate 14, the outlet of described separator 2 passes through described connecting tube 9,10 and mixing four-way 8 and described supervisor
Road 13 is connected；Described diversion mechanism 11,12 includes circular pipe housing 111, and 16 are included in the pipeline shell 111 relatively
The autonomous channel 112 in the identical ring sector section of the axial symmetry distribution of flow area center 110, described diversion mechanism 11,12
Shunting body outlet includes 4 axisymmetric described autonomous channels 1121, remaining autonomous channel 1122 and described main pipeline 13
Connection；Described measuring mechanism includes Gas measurement component 3, liquid measure part 5 and pressure transmitter 4, and described pressure becomes
Device 4 is sent to be arranged in described current divider 1, described Gas measurement component 3 includes Venturi tube 31, pressure transmission is led with hard metal
Pipe and differential flowmeter in gas service 32, described liquid measure part 5 include Venturi tube 51, pressure transmission hard metal conduit and liquid
Body differential pressure flowmeter 52, described pressure transmitter 4 include pressure transmission hard metal conduit and pressure sensor 41, described gas
Body differential pressure flowmeter 32, pressure sensor 41, differential flowmeter in liquid service 52 are connected with described data collecting system 6 respectively,
Described data collecting system 6 is shown with described data and storage system 7 is connected.
Using and operation principle：The suit is set to monoblock type skid-mounted device, can pass through the side such as welding or clamp connection
Formula is vertically mounted on steam injection pipeline, and pressure, flow, the mass dryness fraction for carrying out moist steam monitor.Its connected mode is：Steam flows into
Enter current divider 1, after the shunting of multidraw twice, the representative fluid of sampling enters separator 2, by Gravity Separation and whirlwind point
From combination moist steam is separated into saturated vapor and water；Saturated vapor mutually enters through connecting tube 9 all the way surveys steam flow
Entered back into Venturi tube 31 in mixing four-way 8；And aqueous phase enters the Venturi tube 51 for surveying aqueous phase flow through connecting tube 10 all the way
And finally also enter in mixing four-way 8 and flowed into together with saturated vapor in main pipeline, complete shunting and the split-phase of shunting body.Wherein
The pressure of Trunk Line is by the way that, to pressure sensor 41, and vapour phase differential pressure and aqueous phase differential pressure are also logical with hard metal conducting tube
Same hard metal conducting tube is crossed to differential flowmeter in gas service 32 and differential flowmeter in liquid service 52, so as to measure saturated vapor
It is transferred to the meter that data collecting system 6 enters trip temperature, pressure, flow and mass dryness fraction together with the respective flow of water and with pressure signal
Calculate and transmit the result to data show and storage system 7 shown.
The device is as follows to the calculation formula for being tested the steam of steam-water two-phase fluid and the total flow of water：Gas phase always flows
Measure MG, liquid phase total flow be ML, the gas phase flow rate M of differential flowmeter in gas service measurementG3, differential flowmeter in liquid service measurement liquid phase stream
Measure ML3It can be represented with following formula：
MG=MG3/KG （1）
ML=ML3/KL （2）
K in formulaGReferred to as gas phase diverting coefficient, KLRepresent the diverting coefficient of liquid phase, structure and fluid condition with flowmeter
It is relevant.After liquid and gas total flow has been measured, according to two phase flow fundamental relation can calculate two phase flow total flow M and
Mass dryness fraction X.
M=MG+ML (3)
X=MG/ML×100 (4)
To the gas phase flow rate M in main pipelineG2, liquid phase flow M in main pipelineL2Without considering.For finally measuring each list
The data on flows of phase flow rate and pressure data etc., by teletransmission to data collecting system, with reference to data acquisition software and data point
Analysis software can draw the data such as flow, mass dryness fraction, pressure, temperature and the tired fluence of tested steam, and can be realized and deposited by software
Storage and display.
Claims (3)
1. oil field ground wet steam flow dryness measurement device, including current divider, separator and measuring mechanism, described current divider
It is connected with the entrance of described separator, described measuring mechanism is provided with measurement portion in the export pipeline of described separator
Part, it is characterized in that described current divider is multiple spot multi-stage diffluence device；
Described multiple spot multi-stage diffluence device includes main pipeline and multiple diversion mechanisms, and each diversion mechanism includes entrance and gone out
Mouthful, it exports the outlet for including being connected with main pipeline and shunting body outlet, the pipeline connection of its entrance and direction of flow, main pipeline
Provided with diversion mechanism, the outlet of separator is connected with main pipeline；Diversion mechanism is provided with identical section of even number axial symmetry distribution
The autonomous channel in face, diversion mechanism shunting body outlet include the axisymmetric described autonomous channel of even number；Each shunting machine
Eccentric orifice plate is provided with main pipeline after connector of the structure on main pipeline；Described diversion mechanism is 2, one of them point
Stream mechanism is arranged at described main pipeline port, the outlet of the diversion mechanism respectively with described main pipeline and another diversion mechanism
Entrance be connected, the outlet of described another diversion mechanism is connected with described main pipeline and described separator respectively.
2. oil field ground wet steam flow dryness measurement device as claimed in claim 1, it is characterized in that described diversion mechanism
Including circular pipe housing, the section of the described autonomous channel in the pipeline shell is fan-shaped or ring sector.
3. oil field ground wet steam flow dryness measurement device as claimed in claim 1, it is characterized in that described diversion mechanism
Including circular pipe housing, the autonomous channel of the identical sector crosssection of 16 axial symmetry distributions is included in the pipeline shell, it is described
Diversion mechanism shunting body outlet include 4 it is axisymmetric described in autonomous channels.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210419330.5A CN103791952B (en) | 2012-10-29 | 2012-10-29 | Oil field ground wet steam flow dryness measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419330.5A CN103791952B (en) | 2012-10-29 | 2012-10-29 | Oil field ground wet steam flow dryness measurement device |
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| CN103791952A CN103791952A (en) | 2014-05-14 |
| CN103791952B true CN103791952B (en) | 2018-03-16 |
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| CN201210419330.5A Active CN103791952B (en) | 2012-10-29 | 2012-10-29 | Oil field ground wet steam flow dryness measurement device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569653B (en) * | 2014-11-10 | 2023-06-16 | 中国石油化工股份有限公司 | Device and method for measuring dryness of underground wet steam flow of vertical well |
| CN107626119A (en) * | 2016-07-18 | 2018-01-26 | 中国石油化工股份有限公司 | Mass dryness fraction distributor and the methods such as the coaxial two phase flow of spiral-flow type gas-liquid |
| CN107882546B (en) * | 2016-09-29 | 2023-07-11 | 中国石油化工股份有限公司 | High-water-content low-gas-production oil well liquid-production three-phase metering device and method |
Citations (4)
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|---|---|---|---|---|
| US4688418A (en) * | 1985-10-17 | 1987-08-25 | Texaco Inc. | Method and apparatus for determining mass flow rate and quality in a steam line |
| CN1228528A (en) * | 1998-12-30 | 1999-09-15 | 西安交通大学 | Divided-flow split-phase type two-phase fluid flow measuring method |
| CN2356321Y (en) * | 1998-12-30 | 1999-12-29 | 西安交通大学 | Shunting split-phase two phase fluid flow meter |
| CN202928630U (en) * | 2012-10-29 | 2013-05-08 | 中国石油化工股份有限公司 | Oil field ground wet steam flow dryness measuring device |
-
2012
- 2012-10-29 CN CN201210419330.5A patent/CN103791952B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688418A (en) * | 1985-10-17 | 1987-08-25 | Texaco Inc. | Method and apparatus for determining mass flow rate and quality in a steam line |
| CN1228528A (en) * | 1998-12-30 | 1999-09-15 | 西安交通大学 | Divided-flow split-phase type two-phase fluid flow measuring method |
| CN2356321Y (en) * | 1998-12-30 | 1999-12-29 | 西安交通大学 | Shunting split-phase two phase fluid flow meter |
| CN202928630U (en) * | 2012-10-29 | 2013-05-08 | 中国石油化工股份有限公司 | Oil field ground wet steam flow dryness measuring device |
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