Study on the effect of fractures on conventional induction log based on physical and numerical simulation

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• 作者：Zeyu Nan ; Jun Li ; Wenna Zhou
• 关键词：Conventional induction log ; Fracture evaluation ; Physical simulation ; Numerical simulation
• 刊名：Acta Geodaetica et Geophysica
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：52
• 期：1
• 页码：131-140
• 全文大小：
• 刊物主题：Geophysics/Geodesy;
• 出版者：Springer Netherlands
• ISSN：2213-5820
• 卷排序：52

文摘

Fractures are important storage area and migration pathway in fractured reservoir. Abnormal conventional induction logging response has been found in fracture zone of reservoir, but few scholars have studied the conventional induction log response of fractured reservoirs. In this paper, the effect of fractures on conventional induction log has been studied based on physical and numerical simulation. Firstly, a physical model has been built to simulate the influence of fractures on conventional log. Secondly, the geometric factor theory has been used to find the minimum fracture width that the conventional induction log could identify, and the minimum interval between two adjacent fractures that the conventional induction log could distinguish. Thirdly, a fracture evaluation method based on numerical simulation was proposed, and a complex model containing surrounding rock and fractures was established to test the possibility of evaluating the fracture parameters using this method. Finally field data were used to test this method. From the results in this paper, we conclude that fractures influence conventional induction log significantly and fractures could be detected and evaluated by the conventional induction log.