摘要
定向井 ,尤其是大斜度井和水平井是目前油气田生产的重要手段 ,电阻率各向异性成为必须考虑的重要因素。主要研究定向井中考虑电阻率各向异性时的交流电测井响应计算问题 ,用到的数值模拟方法为快速Fourier Hankel变换 ;根据模拟响应结果 ,讨论了交流电测井的响应特征及影响因素。总体看来 ,计算速度较快 ,计算结果正确 ,结论合理 ,为实际讨论倾斜井测井响应和利用各向异性电阻率求解饱和度奠定了理论基础。
Applications of directional well have revealed that dip angle and anisotropy of formation can exert a significant effect on resistivity tool responses. The algorithm of Fourier-Hankel transform was adopted to simulate the logging responses in directional wells. Based on the simulation, the effects of the anisotropy, dip angle and shoulder beds on the logging responses were studied. It has been concluded that, dip angle could have obvious effect on logging responses in directional wells, and electrical anisotropy is another factor seriously affecting logging responses when the deviation angle increases, which reveals that they should be taken into account in the build up of tensor saturation model.
出处
《勘探地球物理进展》
2003年第4期301-304,共4页
Progress in Exploration Geophysics
