%0 Journal Article
%T A study on the dual laterolog response to fractures using the forward Numerical modeling<br>用正演数值计算方法开展双侧向测井对裂缝的响应研究
%A SHI Ge HE Tao WU Yue-Qi LIU Jian-Hua MA Yong School of the Earth
%A Space Sciences Peking University
%A Beijing
%A China Petrochemistry Engineering & Technology Research Institute
%A Northwest Branch of Xinxing SINOPEC
%A Urumqi
%A China
%A <br>史 硍
%A 何 涛
%A 仵岳奇
%A 柳建华
%A 马 勇
%J 地球物理学报
%D 2004
%I 
%X We use ANSYS, a large general finite element method software, to compute the dual laterolog response to parallel fractures of equal spacing in the carbonate formation crossing a borehole. The relationship between the dual laterolog response and fracture porosity, fracture dip-angle, base rock resistivity and fluid resistivity are discussed. Based on the analysis of numerical simulation results and the characterizations of dual laterolog response to fractures, a new method is developed to classify the forms of fractures, which can dynamically change the definition of fracture dip-angle range to fit different instances. The technique to obtain the approximate dip-angles of fractures with dual laterolog response is realized. It can greatly prove the estimation of fracture porosity (aperture of fracture). With the condition of constant fracture dip-angles, the inversion model of the dual laterolog response and formula for computing fracture porosity are presented.
%K Numerical simulation
%K Dual laterolog response
%K Fractured carbonate formation
%K 3-D finite element method<br>测井
%K 裂缝
%K 碳酸盐岩
%K 有限元
%K 正演
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=2EEB809249BC7295&yid=D0E58B75BFD8E51C&vid=F4B561950EE1D31A&iid=0B39A22176CE99FB&sid=3356A7630A93A219&eid=8C27CCA578E52082&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=9&reference_num=10