计算物理 ›› 2003, Vol. 20 ›› Issue (1): 37-43.

• 论文 • 上一篇    下一篇

孔隙度敏感系数的数值计算

刘福平, 杨长春   

  1. 中国科学院地质与地球物理研究所, 北京 100101
  • 收稿日期:2001-06-04 修回日期:2001-09-10 出版日期:2003-01-25 发布日期:2003-01-25
  • 作者简介:刘福平(1960-),男,山东莒县,副教授,博士,主要从事光学、测井、勘探及油藏数值模拟方面的研究.
  • 基金资助:
    国家"973"项目(G1999043311)资助

Numerical Calculation of Sensitivity Coefficients to the Porosity

LIU Fu-ping, YANG Chang-chun   

  1. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2001-06-04 Revised:2001-09-10 Online:2003-01-25 Published:2003-01-25

摘要: 由渗流微分方程定解问题,利用格林互易定理导出了网格压力对孔隙度的敏感系数,再由Peaceman方程给出了井底压力对孔隙度的敏感系数.借助三维不均匀非稳定渗流场的压强数值解计算了井底压力对孔隙度的敏感系数,并用直接求解敏感系数的方法进行了验证.

关键词: 孔隙度, 敏感系数, 数值计算, 格林互易定理, 地球物理反演

Abstract: The sensitivity coefficients to the porosity are derived from the initial boundary value problems for the fluid equations in porous media by the Green's Reciprocity Principle. The sensitivity coefficients of wellbore pressure to the porosity are obtained by the Peaceman's equation and calculated with a numerical method for the 3D transient anisotropic fluid equation in porous media and verified with the direct method. The computed results are in agreement with those obtained with the direct method.

Key words: porosity, sensitivity coefficients, numerical calculation, Green's Reciprocity Principie, geophysics inversion

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