损伤套管引起的过套管电阻率测井异常分布特征分析  

Analysis of Abnormal Distribution Characteristics of Through Casing Resistivity Logging Caused by Damaged Casing

作　　者：冯硕 徐菲 黄华 李晓蕾 吴信荣 李宏魁 Feng Shuo;Xu Fei;Huang Hua;Li Xiaolei;Wu Xinrong;Li Hongkui(Zhengzhou University of Light Industry,Zhengzhou 450000,China;Petroleum Engineering Technology Research Institute of ZTOF branch,SINO-PEC,Puyang 457001,China)

机构地区：[1]郑州轻工业大学,河南郑州450000 [2]中国石油化工股份有限公司中原油田分公司石油工程技术研究院,河南濮阳457001

出　　处：《云南化工》2021年第10期75-80,共6页Yunnan Chemical Technology

摘　　要：提出了结合无限元边界的小尺寸有限元过套管电阻率模型构建方案,此方案能够提高正演计算效率的同时保证正演结果的有效性。最终应用此模型,对不同类型套管损伤引起的视电阻率异常值分布特征进行了研究,总结了不同类型套管损伤引起视电阻率异常的分布规律。A finite element forward method combined with infinite element boundary is proposed to treat the resistivity of the casing model. Compared with the analytical solution,it is proved that this method can reduce the size of the solution domain and ensure the accuracy of the calculation. Finally,the method is applied in this paper to achieve the calculation and analysis of different types of casing damage,different damage depth and width of model. The results are used to summarizes the distribution characteristics of apparent resistivity anomalies caused by different casing damage states. The variation law of apparent resistivity anomaly caused by different types of casing damage is summarized.

关 键 词：过套管电阻率测井 无限元边界 有限元法 视电阻率异常 

分 类 号：P631.81[天文地球—地质矿产勘探]