CN104060985B - A kind of stratified deposit profile control and water plugging blocking agent penetration depth method of testing and system - Google Patents
A kind of stratified deposit profile control and water plugging blocking agent penetration depth method of testing and system Download PDFInfo
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Abstract
The invention provides a kind of stratified deposit profile control and water plugging blocking agent penetration depth method of testing and system, wherein method comprises: step 1, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, utilize channelling heterogeneous body physical analogy model to obtain results of Physical; Step 2, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, by drawing the blocking agent permeability saturation curve of different displacement velocities, utilizes numerical simulator described in the correction of blocking agent permeability saturation curve to obtain numerical simulation result; Step 3, the results of Physical of comprehensive utilization after matching analyzed blocking agent planar distribution and the longitudinal distributing law under different injection pressures from described numerical simulation result, and sets up blocking agent and enter the scale model in channelling region and non-channelling region according to analysis result; Step 4, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region, sets up the plug agent amount optimization method of stratified deposit profile control and water plugging blocking agent.
Description
Technical field
The present invention relates to profile control and water plugging control technique field, relate in particular to a kind of stratified deposit profile control and water plugging stifledAgent penetration depth method of testing and system.
Background technology
Research blocking agent or distribution of polymer rule mainly contain the blocking agent distributed mode in deep profile controlling process at presentTwo kinds of methods of blocking agent distribution pattern numerical computation method in formula physical simulating method and deep profile controlling process.Wherein the contribution of the blocking agent distribution pattern physical simulating method in deep profile controlling process has: can set forth blocking agentPlane distribution pattern, obtains the polymer plane distribution pattern under fluid-channeling channel impact, and analyzing polymers drivesSweep efficiency and oil displacement efficiency, to improving the contribution of recovery ratio, reduce the pollution of low-permeability layer, obtain polymerIn the regularity of distribution of different size hole; Obtaining blocking agent flowing velocity and injection pressure is not linear relationship,Propose to adopt surperficial obstruction method to reduce the technology that blocking agent is invaded non-target zone, explained blocking agent injection pressureThe microscopic percolation mechanism of uphill process, has intuitively obtained the distributed image of blocking agent in slit formation rock core inside,Analyze the flowing law of blocking agent in crack and the leak-off rule to matrix by crack. Deep profile controlling processIn the contribution of blocking agent distribution pattern numerical computation method have: the numerical computation method of blocking agent distribution pattern dividesFor analytic formula method and method for numerical simulation, utilize the longitudinal distribution for blocking agent at present of analytic formula methodRule conducts a research, and has derived the blocking agent longitudinal distributing law under different permeability grade, stifled to oil wellThe condition of production after water is predicted.
But two kinds of methods still exist various problems, specific as follows,
There are the following problems for the physical simulating method of research blocking agent or distribution of polymer rule:
(1) no matter study at present blocking agent or the planar distribution of polymer in reservoir and longitudinal both at home and abroadWhen the regularity of distribution, all do not consider the impact of injection pressure.
(2), when research blocking agent longitudinal distributing law, generally adopt at present sandpack column in parallel or also both at home and abroadConnection consolidated core model, but the seepage flow mode of blocking agent in parallel model is linear displacement, and blocking agent is enteredThe true seepage flow mode entering after reservoir is radial fluid flow, and Seepage mode difference must cause the regularity of distribution notUnanimously.
(3), while studying at present blocking agent longitudinal distributing law, think that seepage flow is that linear displacement and each interlayer do not haveMass exchange is all the physical model being equivalent to for " layered profile control " foundation. Do not consider that blocking agent entersEnter after reservoir due to the impact of gravitational differentiation on longitudinal distributing law.
, there is following some problem in the numerical method of the research blocking agent regularity of distribution at present:
(1) although utilize analytic formula method can calculate the longitudinal regularity of distribution of blocking agent, beforePut forward assumed condition too desirable, cannot study the blocking agent distribution pattern becoming under injection pressure condition, and nothingMethod is calculated the blocking agent planar distribution under fluid-channeling channel impact.
(2), than analytic formula method, utilize method for numerical simulation can solve reservoir problem alsoNumerous seepage flow mechanism can be described, but the problem of obtaining of blocking agent permeability saturation curve must be solved.Although at present existing scholar has proposed polymer and has oozed mutually the processing method of data inversion, still immature. StifledThe data inversion method of agent permeability saturation curve is still needed and is further conducted a research.
Summary of the invention
For the weak point existing in the problems referred to above, the invention provides a kind of stratified deposit profile control and water plugging stifledAgent penetration depth method of testing and system.
For achieving the above object, stratified deposit profile control and water plugging blocking agent penetration depth method of testing bag of the present inventionDraw together following steps:
Step 1, sets up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method,Utilize the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy modelTime the distribution situation of blocking agent in reservoir, utilize flat in this channelling heterogeneous body physical analogy model simultaneouslyThe distribution situation of blocking agent when face multilayer heterogeneous body consolidated core is simulated general profile control in thick-layer, utilizes twoPlant distribution situation and obtain results of Physical;
Step 2, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilizes non-steadyState method is tested pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts componentNumerical simulation carries out matching to the test result of described pressure and data on flows, draws according to fitting resultThe blocking agent permeability saturation curve of different displacement velocities, utilizes described blocking agent permeability saturation curve correction instituteState numerical simulator and obtain numerical simulation result;
Step 3, utilizes results of Physical described in corrected numerical simulation matching, comprehensive utilization matchingAfter results of Physical analyze the blocking agent plane distribution under different injection pressures from described numerical simulation resultRule and longitudinal distributing law, and set up blocking agent according to analysis result and enter channelling region and non-channelling regionScale model;
Step 4, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region, sets up stratiformThe plug agent amount optimization method of reservoir profile water blockoff blocking agent.
Further, described step 1 comprises:
Step 11, sets up radial multilayer heterogeneous body consolidated model, utilizes the cementing mould of this radial multilayer heterogeneous bodyThe distribution situation of blocking agent when type simulated layered profile control in reservoir, particular content is:
Densely covered electrode on model, adds strong electrolyte in the water of configuration blocking agent, when there being finite concentration moltenThe blocking agent of liquid configuration arrive certain a bit after, this resistivity will sharply decline, and detect deep adjust with the methodCut open the distribution situation of blocking agent in process; Change injection pressure, analyze each layer of saturation degree and changes in flow rate, take offShow that under different injection pressure conditions, blocking agent, at the longitudinal distributing law of different permeability layers, is calculated different injectionUnder pressure condition, blocking agent enters the blocking agent ratio of channelling layer and non-channelling layer;
Step 12, makes plane multilayer heterogeneous body consolidated core, utilizes this plane multilayer heterogeneous body cement rockThe blocking agent when heart is simulated general profile control is in the distribution situation of thick-layer, and particular content is:
Evenly gather and get core point, gather and get core point and test out the permeability decrease ratio of rock core, inspection according to thisSurvey the distribution situation of blocking agent; Analyze the relation between plastic front and back distribution pattern difference and injection pressure; MeterCalculate the blocking agent ratio that under different injection pressure conditions, blocking agent enters channelling layer and non-channelling layer.
Further, described step 2 comprises:
Step 21, utilizes unstable state method to test the pressure of the blocking agent displacement crude oil under different displacement velocity conditionsAnd data on flows, adopt pressure, the data on flows of component numerical simulation to displacement process to carry out matching,Concrete approximating method is; First give the undetermined of functional relation between permeability saturation curve and water saturationInitial value of parameter, permeability saturation curve can be thought given value, recycling numerical simulation meterCalculate the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilize non-linearLeast square method is determined one group of blocking agent permeability saturation curve of the quadratic sum minimum of going on business;
Step 22, is obtaining after the blocking agent permeability saturation curve of different displacement velocities, at each time stepBefore calculating, calculate the flowing velocity of three directions of each grid, select relatively corresponding according to flowing velocityPermeability curve.
Further, calculate according to the blocking agent longitudinal distributing law under different injection pressures in described step 3Pressure distribution between the injection-production well after blocking agent shutoff channelling layer, sets up the slug length optimization method that replaces.
Further, utilize blocking agent described in described step 3 to enter the ratio in channelling region and non-channelling regionExample model calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up plug agent amount optimizationMethod.
The present invention also provides a kind of stratified deposit profile control and water plugging blocking agent penetration depth test macro, and it comprises:
Physical analogy module, sets up channelling heterogeneous body physics mould by blocking agent regularity of distribution physical simulating methodAnalog model, utilizes the radial multilayer heterogeneous body consolidated model simulation in this channelling heterogeneous body physical analogy modelThe distribution situation of blocking agent when layered profile control in reservoir utilized this channelling heterogeneous body physical analogy mould simultaneouslyThe distribution feelings of blocking agent when plane multilayer heterogeneous body consolidated core in type is simulated general profile control in thick-layerCondition, utilizes two kinds of distribution situations to obtain results of Physical;
Numerical simulation module, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, andUtilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions,And adopt component numerical simulation to carry out matching to the test result of described pressure and data on flows, according to planClose the blocking agent permeability saturation curve that result is drawn different displacement velocities, utilize described blocking agent relative permeabilityDescribed in curve correction, numerical simulator obtains numerical simulation result;
Integrated treatment module, utilizes results of Physical described in corrected numerical simulation matching, comprehensiveUtilize the results of Physical after matching to analyze the blocking agent under different injection pressures from described numerical simulation resultLongitudinal distributing law, and the ratio of setting up blocking agent and entering channelling region and non-channelling region according to analysis resultModel;
Result treatment module, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region,Set up the plug agent amount optimization method of stratified deposit profile control and water plugging blocking agent.
Further, described physical analogy module comprises:
Consolidated model builds module, for building radial multilayer heterogeneous body consolidated model, utilizes these radially manyThe distribution situation of blocking agent when layer heterogeneous body consolidated model simulation layered profile control in reservoir, particular content is:
Densely covered electrode on model, adds strong electrolyte (NaCL, KCL) in the water of configuration blocking agent,When have the blocking agent of certain concentration solution configuration arrive certain a bit after, this resistivity will sharply decline, with thisMethod detects the distribution situation of blocking agent in deep profile controlling process. Change injection pressure, analyze each layer of saturation degreeWith changes in flow rate, disclose under different injection pressure conditions blocking agent at the longitudinal distributing law of different permeability layers,Calculate the blocking agent ratio that under different injection pressure conditions, blocking agent enters channelling layer and non-channelling layer.
Consolidated core is made module, for making plane multilayer heterogeneous body consolidated core, utilizes this plane manyBlocking agent when layer heterogeneous body consolidated core is simulated general profile control is in the distribution situation of thick-layer, and particular content is:
Evenly gather and get core point, gather and get core point and test out the permeability decrease ratio of rock core, inspection according to thisSurvey the distribution situation after blocking agent plastic; Analyze the pass between plastic front and back distribution pattern difference and injection pressureSystem; Calculate the blocking agent ratio that under different injection pressure conditions, blocking agent enters channelling layer and non-channelling layer.
Further, described numerical simulation module comprises:
Curve obtains module, for utilizing unstable state method to test the blocking agent displacement under different displacement velocity conditionsThe pressure of crude oil and data on flows, adopt pressure, the data on flows of component numerical simulation to displacement processCarry out matching, concrete approximating method is; First give function between permeability saturation curve and water saturationInitial value of undetermined parameter of relation, permeability saturation curve can be thought given value, recycling numberValue simulator calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, thenUtilize nonlinear least square method to determine one group of blocking agent permeability saturation curve of the quadratic sum minimum of going on business;
Curve selected module, for obtaining after the blocking agent permeability saturation curve of different displacement velocities,Before each time step calculates, calculate the flowing velocity of three directions of each grid, select according to flowing velocityCorresponding permeability saturation curve.
Further, according to the rule that longitudinally distribute of the blocking agent under different injection pressures in described integrated treatment moduleRule is calculated pressure distribution between the injection-production well after blocking agent shutoff channelling layer, sets up the slug length optimization method that replaces.
Further, utilize blocking agent described in described integrated treatment module to enter channelling region and non-channelling districtThe scale model in territory calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up blocking agent and usesAmount optimization method.
Beneficial effect of the present invention is:
The present invention is by exploring the percolation law problem that in profile control and water plugging process, blocking agent enters heterogeneous reservoir,Disclosed the longitudinal distributing law of blocking agent under fluid-channeling channel impact, clear and definite injection pressure distributes to blocking agentThe regulating and controlling effect of pattern, sets up the blocking agent penetration depth computational methods under different injection pressure conditions.
Brief description of the drawings
Fig. 1 is radially consolidated core schematic diagram of layered profile control parallel connection of the present invention;
Fig. 2 is the longitudinal distribution schematic diagram of general profile control blocking agent of the present invention;
Fig. 3 is stratified deposit profile control and water plugging blocking agent penetration depth test schematic diagram of the present invention.
Detailed description of the invention
At present chemical flooding method for numerical simulation comparatively perfect, can describe blocking agent in deep profile controlling processObstruction, viscosity variation, interfacial tension variation, oil displacement efficiency variation, absorption, shearing, physical chemistry are anti-Should, the seepage flow mechanism such as quick, the diffusion and dispersion of salt. In this patent, blocking agent is in fluid-channeling channel internal flow speedDegree is the percolation flow velocity in non-channelling region much larger than blocking agent, and the strong heterogeneous body of injection rate, can cause pressureStrong heterogeneous body, finally cause the strong heterogeneous body of capillary number, and capillary number is for relative permeability formAffect very responsive. Therefore the regularity of distribution of blocking agent to be accurately calculated, blocking agent must be obtained in different in flow ratePermeability saturation curve under condition.
Therefore, the core of this patent is: set up the longitudinal penetration depth test model of novel blocking agent, i.e. planeRadially cementing displacement model in parallel; Set up and consider what injection pressure affected, blocking agent penetration depth method of testing;Set up the blocking agent penetration depth Analytic Calculation Method of considering injection pressure impact, utilize physical simulating method knotReally verify, and results of Physical parameter value scope is expanded, thereby obtain knowingThe calculation template of practice of construction.
The invention provides a kind of stratified deposit profile control and water plugging blocking agent penetration depth test macro, it comprises:
Step 1, sets up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method,Utilize the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy modelTime the distribution situation of blocking agent in reservoir, utilize flat in this channelling heterogeneous body physical analogy model simultaneouslyThe distribution situation of blocking agent when face multilayer heterogeneous body consolidated core is simulated general profile control in thick-layer, utilizes twoPlant distribution situation and obtain results of Physical;
Step 2, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilizes non-steadyState method is tested pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts componentNumerical simulation carries out matching to the test result of described pressure and data on flows, draws according to fitting resultThe blocking agent permeability saturation curve of different displacement velocities, utilizes described blocking agent permeability saturation curve correction instituteState numerical simulator and obtain numerical simulation result;
Step 3, utilizes results of Physical described in corrected numerical simulation matching, comprehensive utilization matchingAfter results of Physical analyze the blocking agent plane distribution under different injection pressures from described numerical simulation resultRule and longitudinal distributing law, and set up blocking agent according to analysis result and enter channelling region and non-channelling regionScale model;
Step 4, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region, sets up stratiformThe plug agent amount optimization method of reservoir profile water blockoff blocking agent.
The present invention also provides a kind of stratified deposit profile control and water plugging blocking agent penetration depth test macro, and it comprises:
Physical analogy module, sets up channelling heterogeneous body physics mould by blocking agent regularity of distribution physical simulating methodAnalog model, utilizes the radial multilayer heterogeneous body consolidated model simulation in this channelling heterogeneous body physical analogy modelThe distribution situation of blocking agent when layered profile control in reservoir utilized this channelling heterogeneous body physical analogy mould simultaneouslyThe distribution feelings of blocking agent when plane multilayer heterogeneous body consolidated core in type is simulated general profile control in thick-layerCondition, utilizes two kinds of distribution situations to obtain results of Physical;
Numerical simulation module, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, andUtilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions,And adopt component numerical simulation to carry out matching to the test result of described pressure and data on flows, according to planClose the blocking agent permeability saturation curve that result is drawn different displacement velocities, utilize described blocking agent relative permeabilityDescribed in curve correction, numerical simulator obtains numerical simulation result;
Integrated treatment module, utilizes results of Physical described in corrected numerical simulation matching, comprehensiveUtilize the results of Physical after matching to analyze the blocking agent under different injection pressures from described numerical simulation resultLongitudinal distributing law, and the ratio of setting up blocking agent and entering channelling region and non-channelling region according to analysis resultModel;
Result treatment module, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region,Set up the plug agent amount optimization method of stratified deposit profile control and water plugging blocking agent.
Fig. 3 is stratified deposit profile control and water plugging blocking agent penetration depth method of testing schematic diagram of the present invention. As figureShown in 3, the particular content of this patent comprises:
1) make radial multilayer heterogeneous body consolidated model, the longitudinal rhythmic nature of characterize reservoir. As shown in Figure 1,Utilize radial multilayer consolidated model in parallel, change injection pressure, analyze each layer of saturation degree and changes in flow rate,Disclose blocking agent under different injection pressure conditions and, at the longitudinal distributing law of different permeability layers, calculate different notesEnter the blocking agent ratio that under pressure condition, blocking agent enters channelling layer and non-channelling layer. It is quiet after blocking agent injection finishesBe set to glue, evenly gather and get core point, the permeability variation of test removal of core, determines after blocking agent plasticThe regularity of distribution, calculates and under different injection pressure conditions, after blocking agent plastic, enters channelling region and non-channelling regionBlocking agent ratio, analyze the difference of the regularity of distribution before and after plastic.
2) make plane multilayer heterogeneous body consolidated core, erect, simulation " general profile control " and time block upAgent is in the distribution situation of thick-layer, and as shown in Figure 2, the electrode that gathers on consolidated model, detects blocking agent and do not becomeBefore glue, involve scope; Evenly gather and get core point, the permeability decrease ratio of test removal of core, detectsAfter blocking agent plastic, involve scope. Analyze the relation between plastic front and back distribution pattern difference and injection pressure.
3) utilize unstable state method to test pressure and the flow of the blocking agent displacement crude oil under different displacement velocity conditionsData, adopt pressure, the data on flows of component numerical simulation to displacement process to carry out matching. Relatively ooze, there is the undetermined of some in existence function relation between rate curve and water saturation thoroughly in this functionParameter, first gives initial value of undetermined parameter, and permeability saturation curve can be thought given value, then profitCalculate the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export with numerical simulation,Then utilize optimal method (nonlinear least square method) can determine the unique of quadratic sum minimum that go on businessOne group oozes curve mutually.
4) obtaining after the blocking agent permeability saturation curve of different displacement velocities, can be at each time step meterBefore calculation, calculate the flowing velocity of three directions of each grid, select relatively corresponding according to flowing velocityPermeability curve. Utilize corrected numerical simulation, (the emphasis adjustment of matching Physical simulation experimentIn physical analogy process, easily there is the parameter of error, and in blocking agent Performance Evaluating Indexes, easily have errorParameter).
5) comprehensive utilization results of Physical and numerical simulation result, analyze under different injection pressure conditionsBlocking agent planar distribution and longitudinal distributing law. Set up blocking agent and enter channelling region and non-channelling regionScale model.
6) consider the blocking agent distribution pattern of different injection pressures, pollute and ensure that blocking agent is suitable reducing low-permeability layerUnder the double requirements that profit is injected, set up injection pressure optimization method. Optimizing on the basis of injection pressure,Enter the Mathematical Modeling of non-channelling region volume according to blocking agent, calculate blocking agent and enter channelling region and non-channellingThe blocking agent ratio in region, sets up plug agent amount optimization method. According to the blocking agent regularity of distribution, calculate blocking agent envelopePressure distribution between the injection-production well after stifled channelling layer, sets up the slug length optimization method that replaces.
Only as described above, be only preferred embodiment of the present invention, is such as familiar with the special of this skillIndustry personage. After understanding technological means of the present invention, natural energy is according to actual needs, in the present inventionInstruction under changed. Therefore all equal variation and modifications of doing according to the present patent application the scope of the claims,All should still remain within the scope of the patent.
Claims (10)
1. a stratified deposit profile control and water plugging blocking agent penetration depth method of testing, is characterized in that, comprising:
Step 1, sets up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method,Utilize the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy modelTime the distribution situation of blocking agent in reservoir, utilize flat in this channelling heterogeneous body physical analogy model simultaneouslyThe distribution situation of blocking agent when face multilayer heterogeneous body consolidated core is simulated general profile control in thick-layer, utilizes twoPlant distribution situation and obtain results of Physical;
Step 2, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilizes non-steadyState method is tested pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts componentNumerical simulation carries out matching to the test result of described pressure and data on flows, draws according to fitting resultThe blocking agent permeability saturation curve of different displacement velocities, utilizes described blocking agent permeability saturation curve correction instituteState numerical simulator and obtain numerical simulation result;
Step 3, utilizes results of Physical described in corrected numerical simulation matching, comprehensive utilization matchingAfter results of Physical analyze the blocking agent plane distribution under different injection pressures from described numerical simulation resultRule and longitudinal distributing law, and set up blocking agent according to analysis result and enter channelling region and non-channelling regionScale model;
Step 4, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region, sets up stratiformThe plug agent amount optimization method of reservoir profile water blockoff blocking agent.
2. stratified deposit profile control and water plugging blocking agent penetration depth method of testing as claimed in claim 1, its featureBe, described step 1 comprises:
Step 11, sets up radial multilayer heterogeneous body consolidated model, utilizes the cementing mould of this radial multilayer heterogeneous bodyThe distribution situation of blocking agent when type simulated layered profile control in reservoir, particular content is:
Densely covered electrode on model, adds strong electrolyte in the water of configuration blocking agent, when there being finite concentration moltenThe blocking agent of liquid configuration arrive certain a bit after, this resistivity will sharply decline, and detect deep adjust with the methodCut open the distribution situation of blocking agent in process; Change injection pressure, analyze each layer of saturation degree and changes in flow rate, take offShow that under different injection pressure conditions, blocking agent, at the longitudinal distributing law of different permeability layers, is calculated different injectionUnder pressure condition, blocking agent enters the blocking agent ratio of channelling layer and non-channelling layer;
Step 12, makes plane multilayer heterogeneous body consolidated core, utilizes this plane multilayer heterogeneous body cement rockThe blocking agent when heart is simulated general profile control is in the distribution situation of thick-layer, and particular content is:
Evenly gather and get core point, gather and get core point and test out the permeability decrease ratio of rock core, inspection according to thisSurvey the distribution situation of blocking agent; Analyze the relation between plastic front and back distribution pattern difference and injection pressure; MeterCalculate the blocking agent ratio that under different injection pressure conditions, blocking agent enters channelling layer and non-channelling layer.
3. stratified deposit profile control and water plugging blocking agent penetration depth method of testing as claimed in claim 1, its featureBe, described step 2 comprises:
Step 21, utilizes unstable state method to test the pressure of the blocking agent displacement crude oil under different displacement velocity conditionsAnd data on flows, adopt pressure, the data on flows of component numerical simulation to displacement process to carry out matching,Concrete approximating method is; First give the undetermined of functional relation between permeability saturation curve and water saturationInitial value of parameter, permeability saturation curve can be thought given value, recycling numerical simulation meterCalculate the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilize non-linearLeast square method is determined one group of blocking agent permeability saturation curve of the quadratic sum minimum of going on business;
Step 22, is obtaining after the blocking agent permeability saturation curve of different displacement velocities, at each time stepBefore calculating, calculate the flowing velocity of three directions of each grid, select relatively corresponding according to flowing velocityPermeability curve.
4. stratified deposit profile control and water plugging blocking agent penetration depth method of testing as claimed in claim 1, its featureBe, calculate blocking agent shutoff according to the blocking agent longitudinal distributing law under different injection pressures in described step 3Pressure distribution between the injection-production well after channelling layer, sets up the slug length optimization method that replaces.
5. stratified deposit profile control and water plugging blocking agent penetration depth method of testing as claimed in claim 1, its featureBe, utilize blocking agent described in described step 3 to enter the scale model meter in channelling region and non-channelling regionCalculate the blocking agent ratio that blocking agent enters channelling region and non-channelling region, set up plug agent amount optimization method.
6. a stratified deposit profile control and water plugging blocking agent penetration depth test macro, is characterized in that, comprising:
Physical analogy module, sets up channelling heterogeneous body physics mould by blocking agent regularity of distribution physical simulating methodAnalog model, utilizes the radial multilayer heterogeneous body consolidated model simulation in this channelling heterogeneous body physical analogy modelThe distribution situation of blocking agent when layered profile control in reservoir utilized this channelling heterogeneous body physical analogy mould simultaneouslyThe distribution feelings of blocking agent when plane multilayer heterogeneous body consolidated core in type is simulated general profile control in thick-layerCondition, utilizes two kinds of distribution situations to obtain results of Physical;
Numerical simulation module, sets up numerical simulator by blocking agent regularity of distribution method for numerical simulation, andUtilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions,And adopt component numerical simulation to carry out matching to the test result of described pressure and data on flows, according to planClose the blocking agent permeability saturation curve that result is drawn different displacement velocities, utilize described blocking agent relative permeabilityDescribed in curve correction, numerical simulator obtains numerical simulation result;
Integrated treatment module, utilizes results of Physical described in corrected numerical simulation matching, comprehensiveUtilize the results of Physical after matching to analyze the blocking agent under different injection pressures from described numerical simulation resultLongitudinal distributing law, and the ratio of setting up blocking agent and entering channelling region and non-channelling region according to analysis resultModel;
Result treatment module, utilizes described blocking agent to enter the scale model in channelling region and non-channelling region,Set up the plug agent amount optimization method of stratified deposit profile control and water plugging blocking agent.
7. stratified deposit profile control and water plugging blocking agent penetration depth test macro as claimed in claim 6, its featureBe, described physical analogy module comprises:
Consolidated model builds module, for building radial multilayer heterogeneous body consolidated model, utilizes these radially manyThe distribution situation of blocking agent when layer heterogeneous body consolidated model simulation layered profile control in reservoir, particular content is:
Densely covered electrode on model, adds strong electrolyte in the water of configuration blocking agent, and described strong electrolyte isNaCl, KCl, when have the blocking agent of certain concentration solution configuration arrive certain a bit after, this resistivity will be sharplyDecline, detect the distribution situation of blocking agent in deep profile controlling process with the method; Change injection pressure, analyzeEach layer of saturation degree and changes in flow rate, disclose vertical at different permeability layers of blocking agent under different injection pressure conditionsTo the regularity of distribution, calculate blocking agent under different injection pressure conditions and enter the blocking agent ratio of channelling layer and non-channelling layerExample;
Consolidated core is made module, for making plane multilayer heterogeneous body consolidated core, utilizes this plane manyBlocking agent when layer heterogeneous body consolidated core is simulated general profile control is in the distribution situation of thick-layer, and particular content is:
Evenly gather and get core point, gather and get core point and test out the permeability decrease ratio of rock core, inspection according to thisSurvey the distribution situation after blocking agent plastic; Analyze the pass between plastic front and back distribution pattern difference and injection pressureSystem; Calculate the blocking agent ratio that under different injection pressure conditions, blocking agent enters channelling layer and non-channelling layer.
8. stratified deposit profile control and water plugging blocking agent penetration depth test macro as claimed in claim 6, its featureBe, described numerical simulation module comprises:
Curve obtains module, for utilizing unstable state method to test the blocking agent displacement under different displacement velocity conditionsThe pressure of crude oil and data on flows, adopt pressure, the data on flows of component numerical simulation to displacement processCarry out matching, concrete approximating method is; First give function between permeability saturation curve and water saturationInitial value of undetermined parameter of relation, permeability saturation curve can be thought given value, recycling numberValue simulator calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, thenUtilize nonlinear least square method to determine one group of blocking agent permeability saturation curve of the quadratic sum minimum of going on business;
Curve selected module, for obtaining after the blocking agent permeability saturation curve of different displacement velocities,Before each time step calculates, calculate the flowing velocity of three directions of each grid, select according to flowing velocityCorresponding permeability saturation curve.
9. stratified deposit profile control and water plugging blocking agent penetration depth test macro as claimed in claim 6, its featureBe, calculate stifled according to the blocking agent longitudinal distributing law under different injection pressures in described integrated treatment modulePressure distribution between the injection-production well after agent shutoff channelling layer, sets up the slug length optimization method that replaces.
10. stratified deposit profile control and water plugging blocking agent penetration depth test macro as claimed in claim 6, its spyLevy and be, utilize blocking agent described in described integrated treatment module to enter the ratio in channelling region and non-channelling regionExample model calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up plug agent amount optimizationMethod.
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