70 lines
2.7 KiB
Matlab
70 lines
2.7 KiB
Matlab
function r = grid_discretization_SP_model(modelflag, r, f, frac_information, fellip, nf)
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% 数据读取
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nx = r.nx; ny = r.ny; nz = r.nz; NTG = r.NTG; cell_mid_coords = r.cell_mid_coords;
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% 不规则边界设定
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boundary = [0,100;
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800,50;
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1000,150;
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1000,350;
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800,450;
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0,400;
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0,100];
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% 将不在边界内的网格的valid值赋为0
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valid_grids = ones(nx*ny*nz);
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in = inpolygon(cell_mid_coords(:,1),cell_mid_coords(:,2),boundary(:,1),boundary(:,2));
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valid_grids(~in) = 0;
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invalid_layer = []; %
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if ~isempty(invalid_layer)
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for i = 1:length(invalid_layer)
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grid_numbering_range = ((invalid_layer(i)-1)*nx*ny+1:invalid_layer(i)*nx*ny)';
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valid_grids(grid_numbering_range,1) = 0;
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end
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end
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% 举例，给出渗透率函数形式 k(x,y) = (x/500+y/250+1)*1e-3 D，或者通过已知点插值计算等，都行
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kx = (cell_mid_coords(:,1)/500+cell_mid_coords(:,2)/250+1)*1e-3;
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ky = kx;
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kz = kx;
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% 举例，给出孔隙度函数形式 phi(x,y) = (x/20000+y/10000+0.1)，或者通过已知点插值计算等，都行
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pori = (cell_mid_coords(:,1)/20000+cell_mid_coords(:,2)/10000+0.1);
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%
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prpor = 20; % 参考压力，MPa
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cpor = 1.0e-5;% 基质压缩系数，MPa
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rock_density = 2700; % 岩石密度，kg/m^3
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% SRV区域定义
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% % % base_x=23:78; nx_SRV=length(base_x);
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% % % base_y=15:36; ny_SRV=length(base_y);
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% % % base_z=1:1;nz_SRV=length(base_z);
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% % % SRV=[];
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% % % for k=1:nz_SRV
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% % % for j=1:ny_SRV
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% % % for i=1:nx_SRV
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% % % SRV=[SRV;(base_z(k)-1)*nx*ny+(base_y(j)-1)*nx+base_x(i)];
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% % % end
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% % % end
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% % % end
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% % % % SRV渗透率赋值
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% % % kx(SRV)=0.001*1e-3 * ones(length(SRV), 1);
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% % % ky(SRV)=0.001*1e-3 * ones(length(SRV), 1);
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% % % kz(SRV)=0.001*1e-3 * ones(length(SRV), 1);
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% 裂缝孔渗
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Kf = 10000*1e-3*ones(1,nf);% 裂缝渗透率
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Wf = 1e-2*ones(1,nf);% 裂缝开度
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Porf = 0.30*ones(1,nf);% 裂缝孔隙度
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prporf = 20;% 裂缝系统参考压力
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cporf = 1.0e-5;% 裂缝系统压缩系数
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% 应力敏感系数
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stress_factor_fracture = 0.000; % 1/MPa 0.001
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stress_factor_matrix = 0.000; % 1/MPa
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stress_factor_ref_pressure = 20; % 一般取为原始地层压力
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%
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Rpt = 2;cf = 1;ca = 1;
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%% 结合基质、裂缝的几何及物性信息开展前处理
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% r = GridProp(modelflag, nx, ny, nz, dx, dy, dz, kx, ky, kz, f, fellip, Kf, Wf, pori, prpor, cpor, Porf, prporf, cporf, cf, ca,co, NTG);
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r = GridProp_new(modelflag, r, kx, ky, kz, f, frac_information, fellip, Kf, Wf, pori, prpor, cpor, Porf, prporf, cporf, cf, ca,valid_grids);
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r.rock_density = rock_density;
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r.valid_grids = valid_grids;
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r.stress_factor_fracture = stress_factor_fracture;
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r.stress_factor_matrix = stress_factor_matrix;
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r.stress_factor_ref_pressure = stress_factor_ref_pressure;
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end |