CN105335600B - The method and system of the thinning characteristic of polymer solution shear in a kind of acquisition stratum - Google Patents
The method and system of the thinning characteristic of polymer solution shear in a kind of acquisition stratum Download PDFInfo
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Abstract
This application discloses a kind of method and system for obtaining the thinning characteristic of polymer solution shear in stratum, the shaft bottom that testing well is obtained using the well testing parameter and the polymer flooding mathematical modeling pre-established that set testing well calculates pressure, then shaft bottom calculating pressure is fitted with the shaft bottom observed pressure being previously obtained, and when fitting result meets default required precision, using shear shinning curve of the current preset shear shinning curve as polymer solution in the earth formation.It can be seen that, when fitting result meets default required precision, show current shear shinning curve very close to the thinning characteristic of polymer solution shear in real stratum, therefore, method of the present invention by being finally inversed by the thinning characteristic of polymer solution shear in stratum, really reflect polymer rheology characteristic in underground porous medium, so that it is determined that in stratum polymer solution shear shinning characteristic, preferably instruct the production of polymer flooding.
Description
Technical field
The present invention relates to oil reservoir development technical field, in particular, is related to polymer solution in a kind of acquisition stratum and cuts
The method and system of the dilute characteristic of shear.
Background technology
Polymer flooding is that a kind of technology is more ripe, and the chemical flooding of heavy industrialization application is carried out in oil field
Intensified oil reduction technology.The principle of polymer flooding intensified oil reduction is：Macromolecule polyalcohol solution is added in water is injected, to increase water
Viscosity, improve the mobility ratio of displacing phase and displaced phase, so as to improve oil recovery rate.Commonly used in polymer flooding exploitation at present
Polymer such as polyacrylamide and other solutions be Bingham fluid, its non newtonian property shows as shear shinning characteristic, that is, sheared
The lower fluid shear rate of flowing is bigger, and effective viscosity is smaller.Accordingly, it is determined that the shear shinning of the polymer of injection in the earth formation is special
Seek peace flowing design of the actually active viscosity to polymer flooding and to improve recovery ratio significant.
Oil Field mainly obtains the shear shinning feature of polymer solution by laboratory experiment at present, due to laboratory ring
Border and the difference of stratum real conditions, the reality that the shear shinning parameter that laboratory experiment obtains often flows with polymer in underground
Shear shinning characteristic has a tremendous difference.Therefore, Oil Field obtains true reflection polymer in underground there is an urgent need to a kind of at present
The method of rheology characteristic in porous media, to determine the shear shinning characteristic of polymer solution in stratum, so as to preferably instruct
The production of polymer flooding.
The content of the invention
In view of this, the present invention provides a kind of method and system for obtaining the thinning characteristic of polymer solution shear in stratum,
To realize the true reflection to polymer rheology characteristic in underground porous medium, so as to preferably instruct the life of polymer flooding
Production.
A kind of method of the thinning characteristic of polymer solution shear in acquisition stratum, including：
According to continuity equation and Darcy's law, multiphase, multi-component polymer flooding fundamental equation are established；
Become using the shear shinning factor for characterizing apparent viscosity of polymer and the shearing for characterizing polymer underground rheological behavior
Dilute curve, establish shear shinning parameter model；
Using the shear shinning parameter model to aqueous phase each component equation conductivity in the polymer flooding fundamental equation
Item is modified, and obtains polymer flooding mathematical modeling；
The well testing parameter of testing well is set, and selectes the numerical value in well testing parameter described in one group as current well testing parameter
Value, the well testing parameter include：The thinning curve of pre-set shear, geological model, reservoir boundary, original formation pressure, fluid properties,
The default well storage constant of the testing well and default wellbore skin；
Numerical solution or Analytical Solution are carried out to the polymer flooding mathematical modeling, and obtain the shaft bottom meter of the testing well
Calculate pressure；
Shaft bottom calculating pressure is fitted with the shaft bottom observed pressure being previously obtained, obtains fitting result；
If the fitting result meets default required precision, using current preset shear shinning curve as polymer solution
Shear shinning curve in the earth formation；
If the fitting result is unsatisfactory for the default required precision, returns and reset another group of well testing parameter value,
Until fitting result meets default required precision, then using current preset shear shinning curve as polymer solution in the earth formation
Shear shinning curve.
Preferably, the shear shinning factor M and the apparent viscosity of polymer μeffRelation be：
M=(μeff-μw)/(μp-μw)
Wherein, μwFor the viscosity of pure water, μpFor the viscosity of polymer solution under inactive state.
Preferably, the fitting includes：The fitting of pressure history, drop of pressure recover fitting and pressure derivative fitting.
Preferably, the pressure derivative is fitted to the early stage local pressure derivative curve caused by shear shinning
Anomalous variation is fitted.
Preferably, the anomalous variation of the differential of pressure curve includes：Curve flattens, recessed and shake.
The system of the thinning characteristic of polymer solution shear in a kind of acquisition stratum, including：
Fundamental equation establishes unit, for according to continuity equation and Darcy's law, establishing multiphase, multi-component polymer
Drive fundamental equation；
Parameter model establishes unit, for utilizing the shear shinning factor and sign polymer for characterizing apparent viscosity of polymer
The shear shinning curve of underground rheological behavior, establishes shear shinning parameter model；
Mathematical Models unit, for using the shear shinning parameter model in the polymer flooding fundamental equation
Aqueous phase each component equation conductivity item is modified, and obtains polymer flooding mathematical modeling；
Parameter setting unit, for setting the well testing parameter of testing well, and select the numerical value in well testing parameter described in one group
As current well testing parameter value, the well testing parameter includes：The thinning curve of pre-set shear, geological model, reservoir boundary, primitively
Stressor layer, fluid properties, the default well storage constant of the testing well and default wellbore skin；
Shaft bottom calculates pressure acquiring unit, is asked for carrying out numerical solution to the polymer flooding mathematical modeling or parsing
Solution, the shaft bottom for obtaining the testing well calculate pressure；
Fitting unit, for shaft bottom calculating pressure to be fitted with the shaft bottom observed pressure being previously obtained, obtain
Fitting result；
Curve determining unit, if meeting default required precision for the fitting result, by current preset shear shinning
Shear shinning curve of the curve as polymer solution in the earth formation；
Returning unit, if being unsatisfactory for the default required precision for the fitting result, return to the parameter setting
Unit resets another group of well testing parameter value, until fitting result meets default required precision, then shears current preset and becomes
Shear shinning curve of dilute curve as polymer solution in the earth formation.
Preferably, the shear shinning factor M and the apparent viscosity of polymer μeffRelation be：
M=(μeff-μw)/(μp-μw)
Wherein, μwFor the viscosity of pure water, μpFor the viscosity of polymer solution under inactive state.
Preferably, the fitting includes：The fitting of pressure history, drop of pressure recover fitting and pressure derivative fitting.
Preferably, the pressure derivative is fitted to the early stage local pressure derivative curve caused by shear shinning
Anomalous variation is fitted.
Preferably, the anomalous variation of the differential of pressure curve includes：Curve flattens, recessed and shake.
It can be seen from the above technical scheme that it is thinning to obtain polymer solution shear in stratum the invention provides one kind
The method and system of characteristic, tested using the well testing parameter and the polymer flooding mathematical modeling pre-established that set testing well
The shaft bottom of well calculates pressure, is then fitted shaft bottom calculating pressure with the shaft bottom observed pressure being previously obtained, and be fitted
When as a result meeting default required precision, using shear shinning of the current preset shear shinning curve as polymer solution in the earth formation
Curve.As can be seen that when fitting result meets default required precision, show current shear shinning curve very close to true
Stratum in the thinning characteristic of polymer solution shear, therefore, the present invention it is thinning by being finally inversed by polymer solution shear in stratum
The method of characteristic, really reflect polymer rheology characteristic in underground porous medium, so that it is determined that polymer is molten in stratum
The shear shinning characteristic of liquid, preferably instructs the production of polymer flooding.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of method flow for obtaining the thinning characteristic of polymer solution shear in stratum disclosed in the embodiment of the present invention
Figure；
Fig. 2 is a kind of knot for obtaining the system of the thinning characteristic of polymer solution shear in stratum disclosed in the embodiment of the present invention
Structure schematic diagram.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiment of the invention discloses it is a kind of obtain stratum in the thinning characteristic of polymer solution shear method and system, with
The true reflection to polymer shear shinning data of rheology characteristic in underground porous medium is realized, it is poly- so as to preferably instruct
The production that compound drives.
Participate in Fig. 1, a kind of method for obtaining the thinning characteristic of polymer solution shear in stratum disclosed in the embodiment of the present invention
Flow chart, including：
S11, according to continuity equation and Darcy's law, establish multiphase, multi-component polymer flooding fundamental equation；
Wherein, multiphase includes：Oil phase, aqueous phase etc., oil phase include oil ingredient, and aqueous phase includes water, polymer and salt three parts.
Multicomponent includes：Oil, water, polymer and salt.
Continuity equation is specific expression form of the mass conservation law (see quality) in hydrodynamics.Its premise is
Convection body uses continuum Model, and speed and density are all space coordinates and continuous, the differentiable function of time.
Darcy's law is a kind of experimental laws for reflecting water percolation law in ground space.
S12, cutting using the shear shinning factor and sign polymer underground rheological behavior for characterizing apparent viscosity of polymer
The dilute curve of shear, establishes shear shinning parameter model；
Specifically, shear shinning factor M and apparent viscosity of polymer μeffRelation, referring to formula (1)：
M=(μeff-μw)/(μp-μw) (1)
Wherein, μwFor the viscosity of pure water, μpFor the viscosity of polymer solution under inactive state.
In formula (1), the span of shear shinning factor M is 0≤M≤1.
Apparent viscosity of the polymer solution under a certain speed can use the shear shinning factor true it can be seen from formula (1)
It is fixed.
It should be noted that in the application, shear shinning curve is the relation curve of the shear shinning factor and aqueous phase speed,
It describes apparent viscosity of the polymer solution under different shear rate.Therefore, the shear shinning according to polymer solution is bent
Line is the shear shinning characteristic that can determine that polymer solution.
Wherein, the application regulation shear shinning curve meets following characteristics：On shear shinning curve, as speed becomes
Change, the shear shinning factor should change in 0-1 sections, shear shinning curve negotiating fixing point (0,1).
S13, using the shear shinning parameter model aqueous phase each component equation in the polymer flooding fundamental equation is passed
Conductance item is modified, and obtains polymer flooding mathematical modeling；
It should be noted that polymer flooding mathematical modeling is generally converted to pressure to solve in solution medium velocity, shearing becomes
The viscosity of polymer solution is the function of speed under dilute effect, thus also with pressure correlation.Because polymer solution viscosity is usual
Very strong coupled relation be present with pressure, therefore to make iteration convergence, fully implicit solution linearization technique can be used to solve.
S14, the well testing parameter for setting testing well, and the numerical value selected in well testing parameter described in one group is joined as current well testing
Numerical value；
Specifically, well testing parameter includes：The thinning curve of pre-set shear, geological model, reservoir boundary, original formation pressure,
Fluid properties, the default well storage constant of the testing well and default wellbore skin.
Geological model --- reservoir formation is described including Effective thickness of formation, permeability, porosity, rock compressibility etc.
The parameter of property.
Reservoir boundary --- the Outer Boundary Conditions of Basic equation group are solved in well test analysis.
The strata pressure distribution initial value that original formation pressure --- well test analysis is set when calculating.
Fluid properties --- subterranean oil, the viscosity of water or other fluid, reservoir volume ratio are with pressure changing.
Well stores up constant --- it is used for the coefficient for describing well bore storage effect in well test analysis.
Wellbore skin --- it is used for the coefficient for describing near wellbore formation permeability variation in well test analysis.
S15, numerical solution or Analytical Solution are carried out to the polymer flooding mathematical modeling, obtain the shaft bottom of the testing well
Calculate pressure；
S16, by the shaft bottom calculating pressure be fitted with the shaft bottom observed pressure being previously obtained, obtain fitting result；
Wherein, fitting includes：The fitting of pressure history, drop of pressure recover fitting and pressure derivative fitting.
It should be noted that pressure derivative fitting includes the fitting of early stage pressure derivative, the exception of differential of pressure curve
Change includes：Curve flattens, recessed and shake.
S17, judge whether the fitting result meets default required precision, if it is, performing step S18；If not,
Then return to step S14；
S18, using shear shinning curve of the current preset shear shinning curve as polymer solution in the earth formation.
It should be noted is that when fitting result is unsatisfactory for default required precision, return to step S14 purpose is weight
Another group of well testing parameter value of new settings, until fitting result meets default required precision.
It in summary it can be seen, the present invention utilizes the well testing parameter for setting testing well and the polymer flooding mathematical modulo pre-established
The shaft bottom that type obtains testing well calculates pressure, is then intended shaft bottom calculating pressure with the shaft bottom observed pressure being previously obtained
Close, and when fitting result meets default required precision, using current preset shear shinning curve as polymer solution on stratum
In shear shinning curve.As can be seen that when fitting result meets default required precision, current shear shinning curve is shown
Through very close to the thinning characteristic of polymer solution shear in real stratum, therefore, the present invention is by being finally inversed by polymer in stratum
The method of the thinning characteristic of solution shear, really reflect polymer rheology characteristic in underground porous medium, so that it is determined that ground
The shear shinning characteristic of polymer solution, preferably instructs the production of polymer flooding in layer.
It should be noted is that when establishing parameters in polymer flooding model, can also gather according to being actually needed increase and removing
The restrictive condition of other materialization phenomenons outside the rheological behavior of compound underground, other materialization phenomenons include：Polymer viscosified, gather
Compound absorption, permeability decrease etc..
It is corresponding with above method embodiment, it is thinning to obtain polymer solution shear in stratum the invention also discloses one kind
The system of characteristic.
Referring to Fig. 2, a kind of system for obtaining the thinning characteristic of polymer solution shear in stratum disclosed in the embodiment of the present invention
Structural representation, including：Fundamental equation establishes unit 21, parameter model establishes unit 22, Mathematical Models unit 23, ginseng
Number setup unit 24, shaft bottom calculate pressure acquiring unit 25, fitting unit 26, curve determining unit 27 and returning unit 28；
Wherein：
Fundamental equation establishes unit 21, for according to continuity equation and Darcy's law, establishing multiphase, multi-component polymerization
Thing drives fundamental equation；
Wherein, multiphase includes：Oil phase, aqueous phase etc., oil phase include oil ingredient, and aqueous phase includes water, polymer and salt three parts.
Multicomponent includes：Oil, water, polymer and salt.
Continuity equation is specific expression form of the mass conservation law (see quality) in hydrodynamics.Its premise is
Convection body uses continuum Model, and speed and density are all space coordinates and continuous, the differentiable function of time.
Darcy's law is a kind of experimental laws for reflecting water percolation law in ground space.
Parameter model establishes unit 22, for being polymerize using the shear shinning factor and sign that characterize apparent viscosity of polymer
The shear shinning curve of thing underground rheological behavior, establishes shear shinning parameter model；
Specifically, shear shinning factor M and apparent viscosity of polymer μeffRelation, referring to formula (1)：
M=(μeff-μw)/(μp-μw) (1)
Wherein, μwFor the viscosity of pure water, μpFor the viscosity of polymer solution under inactive state.
In formula (1), the span of shear shinning factor M is 0≤M≤1.
Apparent viscosity of the polymer solution under a certain speed can use the shear shinning factor true it can be seen from formula (1)
It is fixed.
It should be noted that in the application, shear shinning curve is the relation curve of the shear shinning factor and aqueous phase speed,
It describes apparent viscosity of the polymer solution under different shear rate.Therefore, the shear shinning according to polymer solution is bent
Line is the shear shinning characteristic that can determine that polymer solution.
Wherein, the application regulation shear shinning curve meets following characteristics：On shear shinning curve, as speed becomes
Change, the shear shinning factor should change in 0-1 sections, shear shinning curve negotiating fixing point (0,1).
Mathematical Models unit 23, for using the shear shinning parameter model to the polymer flooding fundamental equation
Middle aqueous phase each component equation conductivity item is modified, and obtains polymer flooding mathematical modeling；
It should be noted that polymer flooding mathematical modeling is generally converted to pressure to solve in solution medium velocity, shearing becomes
The viscosity of polymer solution is the function of speed under dilute effect, thus also with pressure correlation.Because polymer solution viscosity is usual
Very strong coupled relation be present with pressure, therefore to make iteration convergence, fully implicit solution linearization technique can be used to solve.
Parameter setting unit 24, for setting the well testing parameter of testing well, and select the number in well testing parameter described in one group
Value is used as current well testing parameter value；
Well testing parameter includes：The thinning curve of pre-set shear, geological model, reservoir boundary, original formation pressure, fluidity
Matter, the default well storage constant of the testing well and default wellbore skin.
Shaft bottom calculates pressure acquiring unit 25, is asked for carrying out numerical solution to the polymer flooding mathematical modeling or parsing
Solution, the shaft bottom for obtaining the testing well calculate pressure；
Fitting unit 25, for shaft bottom calculating pressure to be fitted with the shaft bottom observed pressure being previously obtained, obtain
To fitting result；
Wherein, fitting includes：The fitting of pressure history, drop of pressure recover fitting and pressure derivative fitting.
It should be noted that pressure derivative fitting includes the fitting of early stage pressure derivative, the exception of differential of pressure curve
Change includes：Curve flattens, recessed and shake.
Curve determining unit 27, if meeting default required precision for the fitting result, current preset is sheared and become
Shear shinning curve of dilute curve as polymer solution in the earth formation；
Returning unit 28, if being unsatisfactory for the default required precision for the fitting result, return parameters setting is single
Member 24 resets another group of well testing parameter value, until fitting result meets default required precision, then shears current preset and becomes
Shear shinning curve of dilute curve as polymer solution in the earth formation.
It in summary it can be seen, the present invention utilizes the well testing parameter for setting testing well and the polymer flooding mathematical modulo pre-established
The shaft bottom that type obtains testing well calculates pressure, is then intended shaft bottom calculating pressure with the shaft bottom observed pressure being previously obtained
Close, and when fitting result meets default required precision, using current preset shear shinning curve as polymer solution on stratum
In shear shinning curve.As can be seen that when fitting result meets default required precision, current shear shinning curve is shown
Through very close to the thinning characteristic of polymer solution shear in real stratum, therefore, the present invention is by being finally inversed by polymer in stratum
The method of the thinning characteristic of solution shear, really reflect polymer rheology characteristic in underground porous medium, so that it is determined that ground
The shear shinning characteristic of polymer solution, preferably instructs the production of polymer flooding in layer.
It should be noted is that when establishing parameters in polymer flooding model, can also gather according to being actually needed increase and removing
The restrictive condition of other materialization phenomenons outside the rheological behavior of compound underground, other materialization phenomenons include：Polymer viscosified, gather
Compound absorption, permeability decrease etc..
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
- A kind of 1. method for obtaining the thinning characteristic of polymer solution shear in stratum, it is characterised in that including：According to continuity equation and Darcy's law, multiphase, multi-component polymer flooding fundamental equation are established；It is bent using the shear shinning factor for characterizing apparent viscosity of polymer and the shear shinning for characterizing polymer underground rheological behavior Line, establish shear shinning parameter model；Aqueous phase each component equation conductivity item in the polymer flooding fundamental equation is entered using the shear shinning parameter model Row amendment, obtains polymer flooding mathematical modeling；The well testing parameter of testing well is set, and selectes the numerical value in well testing parameter described in one group as current well testing parameter value, institute Stating well testing parameter includes：It is the thinning curve of pre-set shear, geological model, reservoir boundary, original formation pressure, fluid properties, described The default well storage constant of testing well and default wellbore skin；Numerical solution or Analytical Solution are carried out to the polymer flooding mathematical modeling, the shaft bottom for obtaining the testing well calculates pressure Power；Shaft bottom calculating pressure is fitted with the shaft bottom observed pressure being previously obtained, obtains fitting result；If the fitting result meets default required precision, using current preset shear shinning curve as polymer solution on ground Shear shinning curve in layer；If the fitting result is unsatisfactory for the default required precision, returns and reset another group of well testing parameter value, until Fitting result meets default required precision, then using shearing of the current preset shear shinning curve as polymer solution in the earth formation Thinning curve.
- 2. according to the method for claim 1, it is characterised in that the shear shinning factor M is apparent viscous with the polymer Spend μeffRelation be：M=(μeff-μw)/(μp-μw)Wherein, μwFor the viscosity of pure water, μpFor the viscosity of polymer solution under inactive state.
- 3. according to the method for claim 1, it is characterised in that the fitting includes：The fitting of pressure history, drop of pressure or extensive Multiple fitting and pressure derivative fitting.
- 4. according to the method for claim 3, it is characterised in that the pressure derivative is fitted to caused by shear shinning The anomalous variation fitting of early stage local pressure derivative curve.
- 5. according to the method for claim 4, it is characterised in that the anomalous variation of the differential of pressure curve includes：Curve Flatten, recessed and shake.
- A kind of 6. system for obtaining the thinning characteristic of polymer solution shear in stratum, it is characterised in that including：Fundamental equation establishes unit, for according to continuity equation and Darcy's law, establishing multiphase, multi-component polymer flooding base This equation；Parameter model establishes unit, for utilizing the shear shinning factor and sign polymer underground for characterizing apparent viscosity of polymer The shear shinning curve of rheological behavior, establishes shear shinning parameter model；Mathematical Models unit, for using the shear shinning parameter model to aqueous phase in the polymer flooding fundamental equation Each component equation conductivity item is modified, and obtains polymer flooding mathematical modeling；Parameter setting unit, for setting the well testing parameter of testing well, and select the numerical value conduct in well testing parameter described in one group Current well testing parameter value, the well testing parameter include：The thinning curve of pre-set shear, geological model, reservoir boundary, primitively it is laminated Power, fluid properties, the default well storage constant of the testing well and default wellbore skin；Shaft bottom calculates pressure acquiring unit, for carrying out numerical solution or Analytical Solution to the polymer flooding mathematical modeling, obtains Pressure is calculated to the shaft bottom of the testing well；Fitting unit, for shaft bottom calculating pressure to be fitted with the shaft bottom observed pressure being previously obtained, it is fitted As a result；Curve determining unit, if meeting default required precision for the fitting result, by current preset shear shinning curve As the shear shinning curve of polymer solution in the earth formation；Returning unit, if being unsatisfactory for the default required precision for the fitting result, return to the parameter setting unit Another group of well testing parameter value is reset, until fitting result meets default required precision, then it is current preset shear shinning is bent Shear shinning curve of the line as polymer solution in the earth formation.
- 7. system according to claim 6, it is characterised in that the shear shinning factor M is apparent viscous with the polymer Spend μeffRelation be：M=(μeff-μw)/(μp-μw)Wherein, μwFor the viscosity of pure water, μpFor the viscosity of polymer solution under inactive state.
- 8. system according to claim 7, it is characterised in that the fitting includes：The fitting of pressure history, drop of pressure or extensive Multiple fitting and pressure derivative fitting.
- 9. system according to claim 8, it is characterised in that the pressure derivative is fitted to caused by shear shinning The anomalous variation fitting of early stage local pressure derivative curve.
- 10. system according to claim 9, it is characterised in that the anomalous variation of the differential of pressure curve includes：Curve Flatten, recessed and shake.
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| CN105928829B (en) * | 2016-04-29 | 2018-06-05 | 西南石油大学 | A kind of experimental provision for monitoring polymer molecule high speed shear stability on-line |
| CN106096300B (en) * | 2016-06-20 | 2019-02-05 | 合肥工业大学 | The parameter interpretation method and solution release system of Low permeable oil and gas reservoirs |
| CN106198543B (en) * | 2016-07-04 | 2018-08-21 | 中国科学技术大学 | A kind of experimental provision of verification dynamic negative-pressure perforation tunnel cleaning degree |
| CN106092823B (en) * | 2016-07-27 | 2018-10-16 | 西南石油大学 | A kind of experimental provision of continuous assessment high-temperature, high pressure fluid viscosity and shear stability |
| CN106326549B (en) * | 2016-08-23 | 2019-11-08 | 中国石油天然气股份有限公司 | Method and system for determining formation parameters of vertical well shale gas reservoir |
| CN107066679A (en) * | 2017-03-09 | 2017-08-18 | 中海石油(中国)有限公司 | One kind is used for the double-deck channelling oil reservoir well test analysis system and method for polymer flooding |
| CN109441415B (en) * | 2018-12-19 | 2021-03-30 | 中国石油天然气股份有限公司 | Well testing interpretation method of polymer flooding oil reservoir test well based on adjacent well interference |
| US11658323B2 (en) | 2019-09-30 | 2023-05-23 | King Fahd University Of Petroleum And Minerals | Method for making a hydrogen fuel cell gas diffusion layer having tailored porosity |
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