CN106437652A - Distribution and measurement adjusting device for injected steam in heavy oil production and using method thereof - Google Patents
Distribution and measurement adjusting device for injected steam in heavy oil production and using method thereof Download PDFInfo
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- CN106437652A CN106437652A CN201610732083.2A CN201610732083A CN106437652A CN 106437652 A CN106437652 A CN 106437652A CN 201610732083 A CN201610732083 A CN 201610732083A CN 106437652 A CN106437652 A CN 106437652A
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- dryness fraction
- mass dryness
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- 238000005259 measurement Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000009826 distribution Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000000295 fuel oil Substances 0.000 title abstract description 6
- 238000010793 Steam injection (oil industry) Methods 0.000 claims abstract description 80
- 239000012530 fluid Substances 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 4
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 13
- 238000002347 injection Methods 0.000 description 9
- 239000007924 injection Substances 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- Mining & Mineral Resources (AREA)
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- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention relates to the technical field of a distribution device for injected steam in heavy oil production and a using method thereof, in particular to a distribution and measurement adjusting device for the injected steam in the heavy oil production and a using method thereof. The distribution and measurement adjusting device comprises a one-to-two dryness distributor. According to the distribution and measurement adjusting device for the injected steam in the heavy oil production and the using method thereof, in the flow adjusting process, by utilizing the characteristic that critical flow fluid is generated by critical flow venture nozzles and flow measuring of a first steam measuring device and a second steam measuring device and through adjustment of the steam injection pressure of a steam supply pipe, injected flow is effectively controlled, and steam flow entering a single well meets the steam injection requirement for the single well; compared with an existing adjusting way which adjusts flow through an adjusting valve, operation is simpler, steam injection time of the single well is shortened, and heavy oil heat extraction progress can be accelerated.
Description
Technical field
The present invention relates to inject vapor distribution device and using method technical field thereof during viscous crude produces, be that a kind of viscous crude is raw
Product injects steam allocation metering adjusting means and using method thereof.
Background technology
Steam measurement in heavy crude heat extraction, distribution, regulation problem annoying oil field always and produce, and actual steam injection process is basic
Being in the state let drift, it is too much that the steam injection well causing injects flow, and some steam injection wells inject flow wretched insufficiency, have
It is very high that steam injection well injects steam quality, and some wells injection steam quality is seriously on the low side.This phenomenon not only causes seriously
Energy waste, and have impact on heavy oil production.
The Chinese patent of Patent No. 200710200823.9 uses the mass dryness fraction distribution such as symmetry point vapour method realization, the method
Use the method divided equally layer by layer, after many Layer assignment, mass dryness fraction distribution error can be amplified, it is difficult to the mass dryness fraction distribution such as realization；
And steam flow regulation uses flow control valve to realize, when using Flow-rate adjustment valve regulation flow, can produce chain reaction, i.e.
Regulating a flow control valve, upstream pressure can change therewith, other be attached thereto the flow control valve upstream pressure of pipeline with
Change, flow also changes accordingly, and influencing each other between each regulation branch road, the i.e. flow of one branch road of regulation will affect it
The flow of his coupled branch road, it is therefore necessary to the regulation valve on re-adjustments steam injection pipeline, can realize that necessary flow is adjusted
Joint, usually needs back and forth when regulation, and the method complex operation changed with the steam injection time, and bottom pressure also can be therewith
Respective change, now also needs again to regulate flow, and during according still further to above-mentioned control method regulation flow, it is numerous that operation goes round and begins again
Trivial, extend the steam injection time of individual well, have impact on the progress of heavy crude heat extraction.Therefore, the method does not obtain in oil field produces
Promote.
Content of the invention
The invention provides during a kind of viscous crude produces and inject steam allocation metering adjusting means and using method thereof, overcome
The deficiency of above-mentioned prior art, it can effectively solve existing steam flow and regulate the problem that there is complex operation.
One of technical scheme is realized by following measures：A kind of viscous crude injects steam distribution in producing
Metering adjusting means, including one-to-two etc., the 2nd, mass dryness fraction distributor, steam measurement device the first, steam measurement device is done more than one point etc.
Degree distributor one and the mass dryness fraction distributor two such as more than a point, the import at mass dryness fraction distributors such as one-to-two is fixedly connected with steam
Pipe, an outlet at mass dryness fraction distributors such as one-to-two is fixedly connected with steam branch pipe one, at mass dryness fraction distributors such as one-to-two
Another outlet is fixedly connected with steam branch pipe two, and steam measurement device one is fixedly mounted on steam branch pipe one, steam measurement
Device two is fixedly mounted on steam branch pipe two, the port of export of steam branch pipe one and the entrance point of mass dryness fraction distributor one such as more than a point
Be fixedly installed togather, the port of export of steam branch pipe two and more than one point etc. the entrance point of mass dryness fraction distributor two be fixedly mounted on one
Rising, the outlet at the mass dryness fraction distributor one such as more than a point is installed with critical flow venturi nozzle by by-pass line one, at one point
The outlet of the mass dryness fraction distributors two such as many is installed with critical flow venturi nozzle by by-pass line two, divides in the mass dryness fraction such as more than a point
Orchestration one and be installed with the pressure-detecting device that can measure pressure respectively, more than one point etc. on mass dryness fraction distributor two more than one point etc.
The export volume of mass dryness fraction distributor one and more than one point etc. the export volume of mass dryness fraction distributor two be the even number being not zero.
Further optimization and/or improvements to foregoing invention technical scheme one of are presented herein below：
The export volume of the above-mentioned mass dryness fraction distributor one such as more than a point and more than one point etc. the export volume of mass dryness fraction distributor two be 6 extremely
20.
Above-mentioned by-pass line one and corresponding critical flow venturi nozzle are fixed together by resistance oil nozzle sleeve, arm
Line two and corresponding critical flow venturi nozzle are fixed together by resistance oil nozzle sleeve.
Above-mentioned pressure-detecting device is Pressure gauge.
The two of technical scheme are realized by following measures：A kind of viscous crude injects steam distribution in producing
The using method of metering adjusting means, is carried out as follows：Steam injection rate according to each individual well requires, determines and each
Critical flow venturi nozzle on the corresponding by-pass line of individual well one and the nozzle bore of the critical flow venturi nozzle on by-pass line two
Footpath, then the critical flow literary composition mound by the critical flow venturi nozzle on by-pass line one corresponding with each individual well and on by-pass line two
In nozzle be fixed together with the steam injection pipeline of each individual well respectively,
Steam is allocated by carrying out the mass dryness fraction distributors such as steam pipe entrance one-to-two, through mass dryness fraction distributor distribution such as one-to-two
After steam respectively enter in steam branch pipe one and steam branch pipe two, the steam quality in steam branch pipe one and steam branch pipe two with
Carrying out the steam quality in steam pipe all identical, the steam in steam branch pipe one enters one point after steam measurement device one metering
The mass dryness fraction distributors one such as many are allocated, and the steam after the mass dryness fraction distributor one such as more than a point distributes enters each by-pass line one
In, in steam branch pipe two, steam is allocated by entering the mass dryness fraction distributor two such as more than a point after steam measurement device two metering,
Steam after mass dryness fraction distributor two distribution such as more than a point enters in each by-pass line two, in by-pass line one and by-pass line two
Steam quality is all identical with the steam quality carrying out steam pipe, and the steam in by-pass line one and by-pass line two self-corresponding is faced by each
Boundary's stream Venturi nozzle sprays into steam injection pipeline and eventually enters in each self-corresponding individual well；
Carry out the steam injection pressure of steam pipe meeting the fluid of all critical flow venturi nozzles ejection is critical flow, i.e. passes through critical flow
The flow of Venturi nozzle is critical flow, when the flow of each critical flow venturi nozzle is critical flow, and each critical flow
The pressure of venturi nozzle outlet is critical pressure, disclosure satisfy that the steam injection rate of each individual well requires；With the steam injection time
Passage, the outlet pressure of more than one critical flow venturi nozzle raises, and the outlet pressure making critical flow venturi nozzle is big
In its corresponding critical flow pressure, i.e. the import of critical flow venturi nozzle and its differential pressure exporting is sprayed less than critical flow venturi
Differential pressure needed for critical flow fluid for the mouth ejection, causes being less than critical flow by the flow of this critical flow venturi nozzle, enters
The flow of individual well diminishes therewith, and the steam injection rate that the diminishing of flow can not meet individual well requires, then the mass dryness fraction such as flow through more than one point
Distributor one or/and more than one point etc. the flow of mass dryness fraction distributor two also can reduce, institute can be obtained by steam measurement device one
There is by-pass line one each individual well steam injection amount sum corresponding, all by-pass lines two can be obtained by steam measurement device two corresponding
Each individual well steam injection amount sum, when steam measurement device one is or/and the flow value of steam measurement device two diminishes, explanation has
Individual well inject the by-pass line one that flow is not up to connected with this individual well or/and critical flow venturi nozzle on by-pass line two
Critical flow, then improve the steam injection pressure coming in steam pipe, by the mass dryness fraction distributor one such as more than a point and more than one point etc. mass dryness fraction divide
Pressure-detecting device on orchestration two knows steam injection pressure, when the flow value of steam measurement device one reaches corresponding individual well
The individual well steam injection rate that the flow value of steam injection rate requirement sum and steam measurement device two reaches corresponding requires
During sum, illustrate that the flow of each critical flow venturi nozzle all reaches critical flow, then stop the steam injection pressure in steam pipe
Boosting, carry out as stated above individual well steam injection etc. mass dryness fraction distribution, metering and adjust.
Viscous crude of the present invention injects steam allocation metering adjusting means and using method thereof, at the tune of flow in producing
During joint, critical flow venturi nozzle is utilized to produce the characteristic of critical flow fluid, steam measurement device one and steam measurement dress
Putting the flow measurement of two and the steam injection pressure being carried out steam pipe by regulation, effective control is injected flow, is made entrance individual well
The steam injection that steam flow reaches individual well requires, it is for the existing regulative mode by regulating valve regulating flow, operation
More simple, thus shorten the steam injection time of individual well, heavy crude heat extraction progress can be accelerated.In addition, viscous crude of the present invention
Production is injected steam allocation metering adjusting means and using method has steam quality distribution, steam injection metering and flow concurrently and adjusts
Joint, therefore, viscous crude of the present invention injects steam allocation metering adjusting means and using method thereof in producing and produces in oil field
In there is very big promotion prospect.
Brief description
The structural representation that accompanying drawing 1 is the embodiment of the present invention 1.
Coding in accompanying drawing is respectively：1 is the mass dryness fraction distributors such as one-to-two, and 2 is steam measurement device one, and 3 is vaporimeter
Amount device two, 4 is the mass dryness fraction distributor one such as more than a point, and 5 is the mass dryness fraction distributor two such as more than a point, and 6 for carrying out steam pipe, and 7 is steam
Arm one, 8 is steam branch pipe two, and 9 is by-pass line one, and 10 is critical flow venturi nozzle, and 11 is by-pass line two, and 12 is pressure
Table, 13 is steam injection pipeline.
Detailed description of the invention
The present invention is not limited by following embodiment, can determine specifically according to technical scheme and actual conditions
Embodiment.In invention, for the ease of describing, the description of the relative position relation of each parts of embodiment 1 is all according to saying
The Butut mode of bright book accompanying drawing 1 is described, as：The position relationship of forward and backward, upper and lower, left and right etc. is based on specification
The Butut direction of accompanying drawing determines.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described：
Embodiment 1：As shown in Figure 1, steam allocation metering adjusting means, the mass dryness fraction such as including one-to-two are injected during this viscous crude produces
Distributor the 1st, steam measurement device 1, steam measurement device more than 23, one point etc. mass dryness fraction distributor 1 and more than one point etc. mass dryness fraction divide
Orchestration 25, the import at mass dryness fraction distributors 1 such as one-to-two is fixedly connected with steam pipe 6, at mass dryness fraction distributors 1 such as one-to-two
An outlet be fixedly connected with steam branch pipe 1, another outlet at mass dryness fraction distributors 1 such as one-to-two is fixedly connected with steaming
Vapour arm 28, steam measurement device 1 is fixedly mounted on steam branch pipe 1, and steam measurement device 23 is fixedly mounted on steaming
On vapour arm 28, the port of export of steam branch pipe 1 and more than one point etc. the entrance point of mass dryness fraction distributor 1 be fixedly installed togather,
The port of export of steam branch pipe 28 and more than one point etc. the entrance point of mass dryness fraction distributor 25 be fixedly installed togather, dry waiting one point more
The outlet of degree distributor 1 is installed with critical flow venturi nozzle 10 by by-pass line 1, distributes in the mass dryness fraction such as more than a point
The outlet of device 25 is installed with critical flow venturi nozzle 10 by by-pass line 2 11, at the mass dryness fraction distributor 1 such as more than a point
It is installed with, on mass dryness fraction distributor 25, the pressure-detecting device that pressure can be measured respectively more than one point etc., the mass dryness fraction such as more than a point
The export volume of distributor 1 and more than one point etc. the export volume of mass dryness fraction distributor 25 be the even number being not zero.
The mass dryness fraction distribution such as more than 23, one point of the mass dryness fraction distributors such as one-to-two the 1st, steam measurement device 1, steam measurement device
Device more than one 4, one point etc. mass dryness fraction distributor 25, critical flow venturi nozzle 10 and pressure-detecting device be existing known technology.
Inject steam allocation metering adjusting means during viscous crude described in the present embodiment is produced and be applied to during viscous crude produces single
When in well steam injection operation, the steam injection according to each individual well requires to determine the aperture of corresponding critical flow venturi nozzle 10,
The selection in this aperture, i.e. determines the critical flow of this critical flow venturi nozzle 10, and this critical flow is the injection of individual well
Flow, in the injection process of individual well, keeps the flow of each critical flow venturi nozzle 10 to reach critical flow, thus meets
The steam injection of each individual well requires；Viscous crude described in the present embodiment injects steam allocation metering adjusting means in the process of use in producing
In, the mass dryness fraction distributor 1 such as use the mass dryness fraction distributor such as one-to-two the 1st, more than a point and the mass dryness fraction distributor 25 such as more than a point（Two-layer
The method of salary distribution）Carry out evenly distributing of steam quality, it is to avoid prior art uses the mass dryness fraction distribution that the multilayer method of salary distribution exists
The problem that error is amplified and the mass dryness fraction distribution such as is difficult to；During the regulation of flow, utilize critical flow venturi nozzle 10
Produce the flow measurement of characteristic, steam measurement device 1 and the steam measurement device 23 of critical flow fluid and come by regulation
The steam injection pressure of steam pipe 6, effective control is injected flow, is injected steam and divide in making to be produced by the viscous crude described in the present embodiment
Join metering adjusting means enter individual well steam flow reach individual well steam injection require, its relative to existing by regulation valve regulation
For the regulative mode of flow, operate more simple, i.e. can complete flow tune by improving the steam injection pressure carrying out steam pipe 6
Joint, the injection making injection flow reach individual well requires, thus shortens the steam injection time of individual well, can accelerate heavy crude heat extraction and enter
Degree.In addition, the viscous crude described in the present embodiment injects steam allocation metering adjusting means in producing have steam quality distribution, steam injection concurrently
Metering and Flow-rate adjustment, therefore, inject steam allocation metering adjusting means in oil field in the viscous crude production described in the present embodiment
Production has very big promotion prospect.
Steam allocation metering adjusting means can be injected in producing above-mentioned viscous crude and optimizes further according to actual needs
Or/and improve：
As shown in Figure 1, the export volume of the mass dryness fraction distributor 1 such as more than a point and the outlet of the mass dryness fraction distributor 25 such as more than a point
Quantity is 6 to 20.The export volume of the existing mass dryness fraction distributor 1 such as more than a point and the mass dryness fraction distributor 25 such as more than a point
Export volume is generally 6 to 20.
As required, by-pass line 1 and corresponding critical flow venturi nozzle 10 are fixedly connected on by resistance oil nozzle sleeve
Together, by-pass line 2 11 and corresponding critical flow venturi nozzle 10 are fixed together by resistance oil nozzle sleeve.Resistance oil nozzle sleeve
Connected mode, it is simple to the replacing of critical flow venturi nozzle 10, i.e. during actual use, can be flexibly according to list
The steam injection of well requires to change critical flow venturi nozzle 10, makes viscous crude of the present invention inject steam allocation metering in producing and adjusts
Regulating device is used in reality flexibly.
As shown in Figure 1, pressure-detecting device is Pressure gauge 12.
Embodiment 2：As shown in Figure 1, inject the using method of steam allocation metering adjusting means during this viscous crude produces, press
Following method is carried out：Steam injection rate according to each individual well requires, determines with each individual well facing on corresponding by-pass line 1
The nozzle bore of the critical flow venturi nozzle 10 on boundary's stream Venturi nozzle 10 and by-pass line 2 11, then will be with each individual well
Critical flow venturi nozzle 10 on corresponding by-pass line 1 and the critical flow venturi nozzle 10 on by-pass line 2 11 respectively with
The steam injection pipeline 13 of each individual well is fixed together,
Steam is entered the mass dryness fraction distributors 1 such as one-to-two be allocated by carrying out steam pipe 6, through mass dryness fraction distributors 1 such as one-to-two
Steam after distribution respectively enters the steaming in steam branch pipe 1 and steam branch pipe 28, in steam branch pipe 1 and steam branch pipe 28
Vapour mass dryness fraction is all identical with the steam quality come in steam pipe 6, and the steam in steam branch pipe 1 is counted by steam measurement device 1
Entering the mass dryness fraction distributor 1 such as more than a point after amount to be allocated, the steam after the mass dryness fraction distributor 1 such as more than a point distributes enters
Entering in each by-pass line 1, in steam branch pipe 28, steam enters the mass dryness fraction such as more than a point after steam measurement device 23 metering
Distributor 25 is allocated, and the steam after mass dryness fraction distributor 25 distribution such as more than a point enters in each by-pass line 2 11,
By-pass line 1 is all identical with the steam quality carrying out steam pipe 6 with the steam quality in by-pass line 2 11, by-pass line 1 and arm
Steam in line 2 11 by each self-corresponding critical flow venturi nozzle 10 spray into steam injection pipeline 13 and eventually enter into each right
In the individual well answered；
Carry out the steam injection pressure of steam pipe 6 meeting the fluid of all critical flow venturi nozzles 10 ejection is critical flow, i.e. by facing
The flow of boundary's stream Venturi nozzle 10 is critical flow, when the flow of each critical flow venturi nozzle 10 is critical flow, respectively
The pressure of individual critical flow venturi nozzle 10 outlet is critical pressure, disclosure satisfy that the steam injection rate of each individual well requires；With
The passage of steam injection time, the outlet pressure of more than one critical flow venturi nozzle 10 raises, makes critical flow venturi nozzle
The outlet pressure of 10 is more than its corresponding critical flow pressure, i.e. the import of critical flow venturi nozzle 10 is little with its differential pressure exporting
Differential pressure needed for critical flow venturi nozzle 10 sprays critical flow fluid, causes the stream by this critical flow venturi nozzle 10
Amount is less than critical flow, and the flow entering individual well diminishes therewith, and diminishing of flow can not meet the steam injection rate requirement of individual well,
The mass dryness fraction distributor 1 such as then flow through more than one point or/and the flow of mass dryness fraction distributor 25 also can reduce more than one point etc., pass through steam
Metering device 1 can obtain all by-pass lines 1 each individual well steam injection amount sum corresponding, by steam measurement device 23
All by-pass lines 2 11 each individual well steam injection amount sum corresponding can be obtained, when steam measurement device 1 or/and steam measurement
When the flow value of device 23 diminishes, illustrate individual well inject the by-pass line 1 that flow is not up to connected with this individual well or/and
The critical flow of the critical flow venturi nozzle 10 on by-pass line 2 11, then improve the steam injection pressure coming in steam pipe 6, by one
The mass dryness fraction distributors 1 such as point many and more than one point etc. the pressure-detecting device on mass dryness fraction distributor 25 know steam injection pressure, work as steam
The flow value of metering device 1 reaches corresponding individual well steam injection rate and requires sum and steam measurement device 23
When flow value reaches corresponding individual well steam injection rate requirement sum, the flow of each critical flow venturi nozzle 10 is described
All reach critical flow, then stop the steam injection pressure boosting in steam pipe, carry out as stated above individual well steam injection etc. mass dryness fraction divide
Join, measure and adjust.
The using method injecting steam allocation metering adjusting means in producing the viscous crude described in the present embodiment is applied to thick
When in oil production in individual well steam injection operation, the steam injection according to each individual well requires to determine corresponding critical flow venturi nozzle
The aperture of 10, the selection in this aperture, i.e. determine the critical flow of this critical flow venturi nozzle 10, this critical flow is list
The injection flow of well, in the injection process of individual well, keeps the flow of each critical flow venturi nozzle 10 to reach critical flow,
Thus the steam injection meeting each individual well requires；Viscous crude described in the present embodiment injects steam allocation metering adjusting means in producing
Using method in use, the mass dryness fraction distributor 1 such as use the mass dryness fraction distributor such as one-to-two the 1st, more than a point and more than a point etc.
Mass dryness fraction distributor 25（The two-layer method of salary distribution）Carry out evenly distributing of steam quality, it is to avoid prior art uses many Layer assignment
The problem that mass dryness fraction that mode exists distribution error is amplified and the mass dryness fraction distribution such as is difficult to；During the regulation of flow, utilize
Critical flow venturi nozzle 10 produces the flow of the characteristic of critical flow fluid, steam measurement device 1 and steam measurement device 23
Metering and the steam injection pressure being carried out steam pipe 6 by regulation, effective control injects flow, and make described in employing the present embodiment is thick
The steam injection that the steam flow of oil injects steam allocation metering adjusting means using method entrance individual well in producing reaches individual well is wanted
Asking, it, for the existing regulative mode by regulating valve regulating flow, operates more simple, i.e. carrys out steam by raising
The steam injection pressure of pipe 6 can complete Flow-rate adjustment, and the injection making injection flow reach individual well requires, thus shortens the note of individual well
The vapour time, heavy crude heat extraction progress can be accelerated.In addition, the viscous crude described in the present embodiment injects steam allocation metering regulation in producing
The using method of device has steam quality distribution, steam injection metering and Flow-rate adjustment concurrently, and therefore, the viscous crude described in the present embodiment is raw
The using method injecting steam allocation metering adjusting means in product has very big promotion prospect in the production of oil field.
In sum, steam allocation metering adjusting means and using method thereof are injected during viscous crude of the present invention produces,
During the regulation of flow, critical flow venturi nozzle is utilized to produce the characteristic of critical flow fluid, steam measurement device one and
The flow measurement of steam measurement device two and the steam injection pressure being carried out steam pipe by regulation, effective control is injected flow, is made
The steam flow entering individual well reaches the steam injection requirement of individual well, and it is relative to the existing regulative mode by regulating valve regulating flow
For, operate more simple, thus shorten the steam injection time of individual well, heavy crude heat extraction progress can be accelerated.In addition, institute of the present invention
The viscous crude stated injects steam allocation metering adjusting means in producing and using method have concurrently steam quality distribution, steam injection metering with
And Flow-rate adjustment, therefore, viscous crude of the present invention injects steam allocation metering adjusting means in producing and using method exists
Oil field has very big promotion prospect in producing.
Above technical characteristic constitutes embodiments of the invention, and it has stronger adaptability and implementation result, can basis
It is actually needed the non-essential technical characteristic of increase and decrease, meet the demand of different situations.
Claims (6)
1. a viscous crude injects steam allocation metering adjusting means in producing, it is characterised in that mass dryness fraction distributor, the steamings such as one-to-two
Vapour metering device the first, steam measurement device the 2nd, mass dryness fraction distributor one and the mass dryness fraction distributor two such as more than a point such as more than one point, at one point
The import of second-class mass dryness fraction distributor is fixedly connected with steam pipe, and an outlet at mass dryness fraction distributors such as one-to-two is fixing to be connected
Having steam branch pipe one, another outlet at mass dryness fraction distributors such as one-to-two is fixedly connected with steam branch pipe two, and steam measurement fills
Putting one to be fixedly mounted on steam branch pipe one, steam measurement device two is fixedly mounted on steam branch pipe two, steam branch pipe one
The port of export and more than one point etc. the entrance point of mass dryness fraction distributor one be fixedly installed togather, the port of export of steam branch pipe two and more than a point
It is fixedly installed togather etc. the entrance point of mass dryness fraction distributor two, in the outlet of the mass dryness fraction distributor one such as more than a point by by-pass line one
Being installed with critical flow venturi nozzle, the outlet at the mass dryness fraction distributor two such as more than a point is installed with by by-pass line two
Critical flow venturi nozzle, is installed with on mass dryness fraction distributor two respectively at the mass dryness fraction distributor one such as more than a point with more than one point etc.
The pressure-detecting device of pressure can be measured, the export volume of mass dryness fraction distributor one and the mass dryness fraction distributor two such as more than a point such as more than one point
Export volume be the even number being not zero.
2. inject steam allocation metering adjusting means during viscous crude according to claim 1 produces, it is characterised in that more than one point
Etc. the export volume of mass dryness fraction distributor one and more than one point etc. the export volume of mass dryness fraction distributor two be 6 to 20.
3. inject steam allocation metering adjusting means during viscous crude according to claim 1 and 2 produces, it is characterised in that arm
Line one and corresponding critical flow venturi nozzle are fixed together by resistance oil nozzle sleeve, by-pass line two and corresponding
Critical flow venturi nozzle is fixed together by resistance oil nozzle sleeve.
4. inject steam allocation metering adjusting means during viscous crude according to claim 1 and 2 produces, it is characterised in that pressure
Detection device is Pressure gauge.
5. inject steam allocation metering adjusting means during viscous crude according to claim 3 produces, it is characterised in that pressure is examined
Surveying device is Pressure gauge.
6. the viscous crude according to claim 1 or 2 or 3 or 4 or 5 injects steam allocation metering adjusting means in producing
Using method, it is characterised in that carry out as follows：Steam injection rate according to each individual well requires, determines and each individual well
Critical flow venturi nozzle on corresponding by-pass line one and the nozzle bore of the critical flow venturi nozzle on by-pass line two, so
After by the critical flow venturi nozzle on by-pass line one corresponding with each individual well and on by-pass line two critical flow venturi spray
Mouth is fixed together with the steam injection pipeline of each individual well respectively,
Steam is allocated by carrying out the mass dryness fraction distributors such as steam pipe entrance one-to-two, through mass dryness fraction distributor distribution such as one-to-two
After steam respectively enter in steam branch pipe one and steam branch pipe two, the steam quality in steam branch pipe one and steam branch pipe two with
Carrying out the steam quality in steam pipe all identical, the steam in steam branch pipe one enters one point after steam measurement device one metering
The mass dryness fraction distributors one such as many are allocated, and the steam after the mass dryness fraction distributor one such as more than a point distributes enters each by-pass line one
In, in steam branch pipe two, steam is allocated by entering the mass dryness fraction distributor two such as more than a point after steam measurement device two metering,
Steam after mass dryness fraction distributor two distribution such as more than a point enters in each by-pass line two, in by-pass line one and by-pass line two
Steam quality is all identical with the steam quality carrying out steam pipe, and the steam in by-pass line one and by-pass line two self-corresponding is faced by each
Boundary's stream Venturi nozzle sprays into steam injection pipeline and eventually enters in each self-corresponding individual well；
Carry out the steam injection pressure of steam pipe meeting the fluid of all critical flow venturi nozzles ejection is critical flow, i.e. passes through critical flow
The flow of Venturi nozzle is critical flow, when the flow of each critical flow venturi nozzle is critical flow, and each critical flow
The pressure of venturi nozzle outlet is critical pressure, disclosure satisfy that the steam injection rate of each individual well requires；With the steam injection time
Passage, the outlet pressure of more than one critical flow venturi nozzle raises, and the outlet pressure making critical flow venturi nozzle is big
In its corresponding critical flow pressure, i.e. the import of critical flow venturi nozzle and its differential pressure exporting is sprayed less than critical flow venturi
Differential pressure needed for critical flow fluid for the mouth ejection, causes being less than critical flow by the flow of this critical flow venturi nozzle, enters
The flow of individual well diminishes therewith, and the steam injection rate that the diminishing of flow can not meet individual well requires, then the mass dryness fraction such as flow through more than one point
Distributor one or/and more than one point etc. the flow of mass dryness fraction distributor two also can reduce, institute can be obtained by steam measurement device one
There is by-pass line one each individual well steam injection amount sum corresponding, all by-pass lines two can be obtained by steam measurement device two corresponding
Each individual well steam injection amount sum, when steam measurement device one is or/and the flow value of steam measurement device two diminishes, explanation has
Individual well inject the by-pass line one that flow is not up to connected with this individual well or/and critical flow venturi nozzle on by-pass line two
Critical flow, then improve the steam injection pressure coming in steam pipe, by the mass dryness fraction distributor one such as more than a point and more than one point etc. mass dryness fraction divide
Pressure-detecting device on orchestration two knows steam injection pressure, when the flow value of steam measurement device one reaches corresponding individual well
The individual well steam injection rate that the flow value of steam injection rate requirement sum and steam measurement device two reaches corresponding requires
During sum, illustrate that the flow of each critical flow venturi nozzle all reaches critical flow, then stop the steam injection pressure in steam pipe
Boosting, carry out as stated above individual well steam injection etc. mass dryness fraction distribution, metering and adjust.
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