水平层状各向异性介质中侧向电阻率测井的快速模拟与应用

应用混合法给出了水平层状各向异性介质中侧向电阻率测井的快速正演算法，理论模型的计算结果证明，各向异性介质中侧向电阻率测井的响应主要受横向电阻率影响，且响应的振幅完全由横向电阻率的大小确定。同时研究了薄交互层的响应与各向异性介质响应的等价性问题，对于砂、泥岩薄交互储层，当组成薄交互层的各个单层的厚度小于０．１ｍ时，薄交互层的响应与等效的各向异性介质的响应基本上是一致的，很难从其电阻率的响应中了解到实

Fast Modeling of Lateral Resistivity Logging in Horizontal Anisotropic Layers and Its Application.

The fast modeling of laterolog in laminated horizontal anisotropic layers is made by a hybrid approach. The forward modeling results show that the laterolog response is mainly affected by the transversal resistivity. Besides, the condition of equivalence between the response to thin cross bed and the response to anisotropic medium is studied. As to sand shale cross bedding when the thickness of individual laminate is smaller than 0.1 m, the response to the thin cross bedding is almost the same as that to the equivalent anisotropic medium. It is difficult to evaluate the true resistivity of individual laminate from the well logs.