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THE NUMERICAL CALCULATION OF SENSITIVITY COEFFICIENTS OF PERMEABILITY FIELD
渗透率场敏感系数的数值计算

Keywords: Permeability field,Sensitivity coefficients,Numerical calculation,Green's reciprocity principle
渗透率场
,敏感系数,数值计算,格林互易定理,油藏,空间导数

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Abstract:

A formula of sensitivity coefficients in porous media is derived from fluid equations by Green's reciprocity principle. The discrete form is given by using numerical integration and finite difference method. The sensitivity coefficients of wellbore pressure to permeability parameters are given by Peaceman's equation and calculated by numerical method of 3D transient anisotropic fluid equation in porous media. The results are verfied by direct method. The computed results are in excellent agreement with those obtained by the direct method.

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