CN104060985A - Method and system for testing entering depth of stratified oil deposit profile control water plugging agent - Google Patents
Method and system for testing entering depth of stratified oil deposit profile control water plugging agent Download PDFInfo
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Abstract
The invention provides a method and a system for testing the entering depth of a stratified oil deposit profile control water plugging agent. The method comprises the following steps: step 1, establishing a cross flow anisotropic physical simulation model by virtue of a plugging agent distribution law physical simulation method, and obtaining a physical simulation result by use of cross flow anisotropic physical simulation model; step 2, establishing a numerical simulation model by virtue of a plugging agent distribution law numerical simulation method, drawing a relative permeability curve of plugging agents with different displacement velocities, and modifying the numerical simulation model by use of the relative permeability curve of the plugging agents so as to obtain a numerical simulation result; step 3, analyzing the planar distribution law and longitudinal distribution law of the plugging agent under different injection pressures by virtue of comprehensively utilizing the fit physical simulation result and the numerical simulation result; establishing a scaled model of the plugging agent entering into a cross flow region and an non-cross flow region according to the analysis result; step 4, establishing a plugging agent dosage optimization method of the stratified oil deposit profile control water plugging agent by utilizing the scaled model of the plugging agent entering into the cross flow region and the non-cross flow region.
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 blocking agent penetration depth method of testing and system.
Background technology
Research blocking agent or distribution of polymer rule mainly contain the two kinds of methods of blocking agent distribution pattern numerical computation method in blocking agent distribution pattern physical simulating method and the deep profile controlling process in deep profile controlling process at present.Wherein the contribution of the blocking agent distribution pattern physical simulating method in deep profile controlling process has: the plane distribution pattern that can set forth blocking agent, obtain the polymer plane distribution pattern under fluid-channeling channel impact, analyzing polymers drives sweep efficiency and the contribution of oil displacement efficiency to raising recovery ratio, reduce the pollution of low-permeability layer, obtain the regularity of distribution of polymer at 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, explain the microscopic percolation mechanism of blocking agent injection pressure uphill process, intuitively obtain the distributed image of blocking agent in slit formation rock core inside, analyzed the flowing law of blocking agent in crack and the leak-off rule to matrix by crack.The contribution of the blocking agent distribution pattern numerical computation method in deep profile controlling process has: the numerical computation method of blocking agent distribution pattern is divided into analytic formula method and method for numerical simulation, utilize analytic formula method only to conduct a research for the longitudinal distributing law of blocking agent at present, derive the blocking agent longitudinal distributing law under different permeability grade, the condition of production after oilwell water shutoff has been 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), while no matter studying at present both at home and abroad planar distribution in reservoir of blocking agent or polymer and longitudinal distributing law, all do not consider the impact of injection pressure.
(2) while studying blocking agent longitudinal distributing law, generally adopt at present sandpack column in parallel or consolidated core model in parallel both at home and abroad, but the seepage flow mode of blocking agent in parallel model is linear displacement, and the true seepage flow mode that blocking agent enters after reservoir is radial fluid flow, Seepage mode difference must cause that the regularity of distribution is inconsistent.
(3) while studying at present blocking agent longitudinal distributing law, thinking that seepage flow is that linear displacement and each interlayer do not have mass exchange, is all the physical model being equivalent to for " layered profile control " foundation.Do not consider that blocking agent enters 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, but hypotheses condition is too desirable, the blocking agent distribution pattern becoming under injection pressure condition cannot be studied, and the blocking agent planar distribution under fluid-channeling channel impact cannot be calculated.
(2), than analytic formula method, utilize method for numerical simulation can solve reservoir problem and can describe numerous seepage flow mechanism, but must solve the problem of obtaining of blocking agent permeability saturation curve.Although at present existing scholar has proposed polymer and has oozed mutually the processing method of data inversion, still immature.The data inversion method of blocking 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 blocking agent 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 of the present invention comprises the following steps:
Step 1, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, the distribution situation of blocking agent while utilizing the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy model in reservoir, the distribution situation of blocking agent while simultaneously utilizing plane multilayer heterogeneous body consolidated core in this channelling heterogeneous body physical analogy model to simulate general profile control in thick-layer, utilizes two kinds of distribution situations to obtain results of Physical;
Step 2, set up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopt component numerical simulation to carry out matching to the test result of described pressure and data on flows, draw the blocking agent permeability saturation curve of different displacement velocities according to fitting result, utilize numerical simulator described in the correction of described blocking agent permeability saturation curve to obtain numerical simulation result;
Step 3, utilize results of Physical described in corrected numerical simulation matching, 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.
Further, described step 1 comprises:
Step 11, sets up radial multilayer heterogeneous body consolidated model, the distribution situation of the blocking agent while utilizing this radial multilayer heterogeneous body consolidated model simulation layered profile control in reservoir, and particular content is:
The electrode that gathers on model, adds strong electrolyte 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, and detect the distribution situation of blocking agent in deep profile controlling process with the method; Change injection pressure, analyze each layer of saturation ratio and changes in flow rate, disclose blocking agent under different injection pressure conditions and, 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;
Step 12, makes plane multilayer heterogeneous body consolidated core, and the blocking agent while utilizing this plane multilayer heterogeneous body consolidated core to simulate 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 core according to this, detect the distribution situation of blocking agent; Analyze the relation between plastic front and back distribution pattern difference and injection pressure; Calculate 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 pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts pressure, the data on flows of component numerical simulation to displacement process to carry out matching, and concrete approximating method is; First give initial value of undetermined parameter of functional relation between permeability saturation curve and water saturation, permeability saturation curve can be thought given value, recycling numerical simulation calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilizes nonlinear least square method to determine 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, calculates the flowing velocity of three directions of each grid before each time step calculates, and selects corresponding permeability saturation curve according to flowing velocity.
Further, calculate pressure distribution between the injection-production well after blocking agent shutoff channelling layer according to the blocking agent longitudinal distributing law under different injection pressures in described step 3, set up the slug length optimization method that replaces.
Further, the scale model that utilizes blocking agent described in described step 3 to enter channelling region and non-channelling region calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up plug agent amount optimization method.
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, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, the distribution situation of blocking agent while utilizing the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy model in reservoir, the distribution situation of blocking agent while simultaneously utilizing plane multilayer heterogeneous body consolidated core in this channelling heterogeneous body physical analogy model to simulate general profile control in thick-layer, utilizes two kinds of distribution situations to obtain results of Physical;
Numerical simulation module, set up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilize 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, draw the blocking agent permeability saturation curve of different displacement velocities according to fitting result, utilize numerical simulator described in the correction of described blocking agent permeability saturation curve to obtain numerical simulation result;
Integrated treatment module, utilize results of Physical described in corrected numerical simulation matching, the results of Physical of comprehensive utilization after matching analyzed the blocking agent 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;
Result treatment module, 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.
Further, described physical analogy module comprises:
Consolidated model builds module, for building radial multilayer heterogeneous body consolidated model, and the distribution situation of the blocking agent while utilizing this radial multilayer heterogeneous body consolidated model simulation layered profile control in reservoir, particular content is:
Electrode gathers on model, in the water of configuration blocking agent, add strong electrolyte (NaCL, KCL), when have the blocking agent of certain concentration solution configuration arrive certain a bit after, this resistivity will sharply decline, and detect the distribution situation of blocking agent in deep profile controlling process with the method.Change injection pressure, analyze each layer of saturation ratio and changes in flow rate, disclose blocking agent under different injection pressure conditions and, 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, and for making plane multilayer heterogeneous body consolidated core, the blocking agent while utilizing this plane multilayer heterogeneous body consolidated core to simulate 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 core according to this, detect the distribution situation after blocking agent plastic; Analyze the relation between plastic front and back distribution pattern difference and injection pressure; 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 pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts pressure, the data on flows of component numerical simulation to displacement process to carry out matching, and concrete approximating method is; First give initial value of undetermined parameter of functional relation between permeability saturation curve and water saturation, permeability saturation curve can be thought given value, recycling numerical simulation calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilizes 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, calculates the flowing velocity of three directions of each grid before each time step calculates, and selects corresponding permeability saturation curve according to flowing velocity.
Further, calculate pressure distribution between the injection-production well after blocking agent shutoff channelling layer according to the blocking agent longitudinal distributing law under different injection pressures in described integrated treatment module, set up the slug length optimization method that replaces.
Further, the scale model that utilizes blocking agent described in described integrated treatment module to enter channelling region and non-channelling region calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up plug agent amount 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, disclose the longitudinal distributing law of blocking agent under fluid-channeling channel impact, the clear and definite regulating and controlling effect of injection pressure to blocking agent distribution 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, the seepage flow mechanism such as obstruction, viscosity variation, interfacial tension variation, oil displacement efficiency variation, absorption, shearing, physical-chemical reaction, the salt that can describe blocking agent in deep profile controlling process are quick, diffusion and dispersion.In this patent, blocking agent in fluid-channeling channel inner flow velocity much larger than blocking agent the seepage velocity in non-channelling region, the strong heterogeneous body of injection rate, can cause the strong heterogeneous body of pressure, finally cause the strong heterogeneous body of capillary number, and capillary number is very responsive for the impact of relative permeability form.Therefore the regularity of distribution of blocking agent to be accurately calculated, the permeability saturation curve of blocking agent under different in flow rate condition must be obtained.
Therefore, the core of this patent is: set up the longitudinal penetration depth test model of novel blocking agent, i.e. the cementing displacement model in parallel of planar radial; Set up and consider what injection pressure affected, blocking agent penetration depth method of testing; The blocking agent penetration depth Analytic Calculation Method of foundation consideration injection pressure impact, utilizes physical simulating method result to verify, and results of Physical parameter value scope is expanded, thereby obtains knowing the 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, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, the distribution situation of blocking agent while utilizing the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy model in reservoir, the distribution situation of blocking agent while simultaneously utilizing plane multilayer heterogeneous body consolidated core in this channelling heterogeneous body physical analogy model to simulate general profile control in thick-layer, utilizes two kinds of distribution situations to obtain results of Physical;
Step 2, set up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopt component numerical simulation to carry out matching to the test result of described pressure and data on flows, draw the blocking agent permeability saturation curve of different displacement velocities according to fitting result, utilize numerical simulator described in the correction of described blocking agent permeability saturation curve to obtain numerical simulation result;
Step 3, utilize results of Physical described in corrected numerical simulation matching, 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.
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, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, the distribution situation of blocking agent while utilizing the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy model in reservoir, the distribution situation of blocking agent while simultaneously utilizing plane multilayer heterogeneous body consolidated core in this channelling heterogeneous body physical analogy model to simulate general profile control in thick-layer, utilizes two kinds of distribution situations to obtain results of Physical;
Numerical simulation module, set up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilize 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, draw the blocking agent permeability saturation curve of different displacement velocities according to fitting result, utilize numerical simulator described in the correction of described blocking agent permeability saturation curve to obtain numerical simulation result;
Integrated treatment module, utilize results of Physical described in corrected numerical simulation matching, the results of Physical of comprehensive utilization after matching analyzed the blocking agent 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;
Result treatment module, 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.
Fig. 3 is stratified deposit profile control and water plugging blocking agent penetration depth method of testing schematic diagram of the present invention.As shown in Figure 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 ratio and changes in flow rate, disclose blocking agent under different injection pressure conditions and, 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.After finishing, blocking agent injection leaves standstill plastic, evenly gather and get core point, the permeability variation of core is taken out in test, determine the regularity of distribution after blocking agent plastic, calculate the blocking agent ratio that enters channelling region and non-channelling region under different injection pressure conditions after blocking agent plastic, analyze the difference of the plastic front and back regularity of distribution.
2) make plane multilayer heterogeneous body consolidated core, erect, simulation " general profile control " and time blocking agent in the distribution situation of thick-layer, as shown in Figure 2, the electrode that gathers on consolidated model, detection blocking agent does not involve scope before plastic; Evenly gather and get core point, the permeability decrease ratio of core is taken out in test, detects the scope that involves after blocking agent plastic.Analyze the relation between plastic front and back distribution pattern difference and injection pressure.
3) utilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopt pressure, the data on flows of component numerical simulation to displacement process to carry out matching.Existence function relation between permeability saturation curve and water saturation, in this function, there is the undetermined parameter of some, first give initial value of undetermined parameter, permeability saturation curve can be thought given value, recycling numerical simulation calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilizes optimal method (nonlinear least square method) can determine that unique one group of the quadratic sum minimum of going on business oozes curve mutually.
4) obtaining after the blocking agent permeability saturation curve of different displacement velocities, can, before each time step calculates, calculate the flowing velocity of three directions of each grid, selecting corresponding permeability saturation curve according to flowing velocity.Utilize corrected numerical simulation, matching Physical simulation experiment (emphasis is adjusted in physical analogy process and easily had the parameter of error, and easily has the parameter of error in blocking agent Performance Evaluating Indexes).
5) comprehensive utilization results of Physical and numerical simulation result, analyze blocking agent planar distribution and longitudinal distributing law under different injection pressure conditions.Set up the scale model that blocking agent enters channelling region and non-channelling region.
6) consider the blocking agent distribution pattern of different injection pressures, pollute and ensure under the double requirements that blocking agent injects smoothly reducing low-permeability layer, set up injection pressure optimization method.Optimizing on the basis of injection pressure, the Mathematical Modeling that enters non-channelling region volume according to blocking agent, calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up plug agent amount optimization method.According to the blocking agent regularity of distribution, calculate pressure distribution between the injection-production well after blocking agent shutoff channelling layer, set up the slug length optimization method that replaces.
Only as described above, be only preferred embodiment of the present invention, such as professional who are familiar with this art.After understanding technological means of the present invention, natural energy, according to actual needs, is changed under instruction of the present invention.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, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, the distribution situation of blocking agent while utilizing the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy model in reservoir, the distribution situation of blocking agent while simultaneously utilizing plane multilayer heterogeneous body consolidated core in this channelling heterogeneous body physical analogy model to simulate general profile control in thick-layer, utilizes two kinds of distribution situations to obtain results of Physical;
Step 2, set up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilize unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopt component numerical simulation to carry out matching to the test result of described pressure and data on flows, draw the blocking agent permeability saturation curve of different displacement velocities according to fitting result, utilize numerical simulator described in the correction of described blocking agent permeability saturation curve to obtain numerical simulation result;
Step 3, utilize results of Physical described in corrected numerical simulation matching, 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.
2. stratified deposit profile control and water plugging blocking agent penetration depth method of testing as claimed in claim 1, is characterized in that, described step 1 comprises:
Step 11, sets up radial multilayer heterogeneous body consolidated model, the distribution situation of the blocking agent while utilizing this radial multilayer heterogeneous body consolidated model simulation layered profile control in reservoir, and particular content is:
The electrode that gathers on model, adds strong electrolyte 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, and detect the distribution situation of blocking agent in deep profile controlling process with the method; Change injection pressure, analyze each layer of saturation ratio and changes in flow rate, disclose blocking agent under different injection pressure conditions and, 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;
Step 12, makes plane multilayer heterogeneous body consolidated core, and the blocking agent while utilizing this plane multilayer heterogeneous body consolidated core to simulate 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 core according to this, detect the distribution situation of blocking agent; Analyze the relation between plastic front and back distribution pattern difference and injection pressure; Calculate 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, is characterized in that, described step 2 comprises:
Step 21, utilizes unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts pressure, the data on flows of component numerical simulation to displacement process to carry out matching, and concrete approximating method is; First give initial value of undetermined parameter of functional relation between permeability saturation curve and water saturation, permeability saturation curve can be thought given value, recycling numerical simulation calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilizes nonlinear least square method to determine 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, calculates the flowing velocity of three directions of each grid before each time step calculates, and selects corresponding permeability saturation curve according to flowing velocity.
4. stratified deposit profile control and water plugging blocking agent penetration depth method of testing as claimed in claim 1, it is characterized in that, calculate pressure distribution between the injection-production well after blocking agent shutoff channelling layer according to the blocking agent longitudinal distributing law under different injection pressures in described step 3, set 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, it is characterized in that, the scale model that utilizes blocking agent described in described step 3 to enter channelling region and non-channelling region calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets 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, set up channelling heterogeneous body physical analogy model by blocking agent regularity of distribution physical simulating method, the distribution situation of blocking agent while utilizing the radial multilayer heterogeneous body consolidated model simulation layered profile control in this channelling heterogeneous body physical analogy model in reservoir, the distribution situation of blocking agent while simultaneously utilizing plane multilayer heterogeneous body consolidated core in this channelling heterogeneous body physical analogy model to simulate general profile control in thick-layer, utilizes two kinds of distribution situations to obtain results of Physical;
Numerical simulation module, set up numerical simulator by blocking agent regularity of distribution method for numerical simulation, and utilize 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, draw the blocking agent permeability saturation curve of different displacement velocities according to fitting result, utilize numerical simulator described in the correction of described blocking agent permeability saturation curve to obtain numerical simulation result;
Integrated treatment module, utilize results of Physical described in corrected numerical simulation matching, the results of Physical of comprehensive utilization after matching analyzed the blocking agent 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;
Result treatment module, 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.
7. stratified deposit profile control and water plugging blocking agent penetration depth test macro as claimed in claim 6, is characterized in that, described physical analogy module comprises:
Consolidated model builds module, for building radial multilayer heterogeneous body consolidated model, and the distribution situation of the blocking agent while utilizing this radial multilayer heterogeneous body consolidated model simulation layered profile control in reservoir, particular content is:
Electrode gathers on model, in the water of configuration blocking agent, add strong electrolyte (NaCL, KCL), when have the blocking agent of certain concentration solution configuration arrive certain a bit after, this resistivity will sharply decline, and detect the distribution situation of blocking agent in deep profile controlling process with the method.Change injection pressure, analyze each layer of saturation ratio and changes in flow rate, disclose blocking agent under different injection pressure conditions and, 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, and for making plane multilayer heterogeneous body consolidated core, the blocking agent while utilizing this plane multilayer heterogeneous body consolidated core to simulate 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 core according to this, detect the distribution situation after blocking agent plastic; Analyze the relation between plastic front and back distribution pattern difference and injection pressure; 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, is characterized in that, described numerical simulation module comprises:
Curve obtains module, for utilizing unstable state method to test pressure and the data on flows of the blocking agent displacement crude oil under different displacement velocity conditions, adopts pressure, the data on flows of component numerical simulation to displacement process to carry out matching, and concrete approximating method is; First give initial value of undetermined parameter of functional relation between permeability saturation curve and water saturation, permeability saturation curve can be thought given value, recycling numerical simulation calculates the rock core two ends pressure reduction in each moment and the cumulative oil production of the port of export, then utilizes 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, calculates the flowing velocity of three directions of each grid before each time step calculates, and selects corresponding permeability saturation curve according to flowing velocity.
9. stratified deposit profile control and water plugging blocking agent penetration depth test macro as claimed in claim 6, it is characterized in that, calculate pressure distribution between the injection-production well after blocking agent shutoff channelling layer according to the blocking agent longitudinal distributing law under different injection pressures in described integrated treatment module, set 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, it is characterized in that, the scale model that utilizes blocking agent described in described integrated treatment module to enter channelling region and non-channelling region calculates the blocking agent ratio that blocking agent enters channelling region and non-channelling region, sets up plug agent amount optimization method.
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