Numerical simulation and response analysis of microspherical focused logging in inclined micro-fractured formation  

作　　者：Nan Zeyu Fu Weishu Liu Zhiyuan 

机构地区：[1]Petroleum Exploration and Production Institute,SINOPEC,Beijing,100083,China

出　　处：《Energy Geoscience》2023年第2期113-116,共4页能源地球科学（英文）

基　　金：This research is funded by SINOPEC Group Project P20039-2.

摘　　要：Tight and unconventional reservoirs have become the focus with the progress of petroleum exploration and development.Micro-fractures in these reservoirs can effectively improve reservoir permeability,and well-developed micro-fractures can serve to directly improve productivity.Compared with the centered electrical well logging method,the Micro Spherical Focused Logging(MSFL)is more suitable for microfracture identification due to its high resolution and near borehole wall measuring method.In this study,an anisotropic model is used to depict micro-fractured formation.First,a forward model with microfractured formation,borehole,logging instrument and surrounding rock is established.Subsequently,MSFL responses under different micro-fracture porosity,resistivity,dip angle and borehole radius,are calculated based on the finite element method(FEM).Finally,the MSFL responses under different microfracture parameters are analyzed with the response laws clarified.

关 键 词：Micro-fracture evaluation Micro Spherical Focused Logging(MSFLS) Forward simulation Finite Element Method(FEM) 

分 类 号：P61[天文地球—矿床学]