| 模拟过套管电阻率测井响应的递推矩阵方法 |
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| 引用本文： | 魏宝君,田坤,张旭,刘坤.模拟过套管电阻率测井响应的递推矩阵方法[J].中国石油大学学报(自然科学版),2011(6):59-65,70. |
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| 作者姓名： | 魏宝君 田坤 张旭 刘坤 |
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| 作者单位： | 中国石油大学物理科学与技术学院;中国石油大学山东省高校新能源物理与材料科学重点实验室; |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目(NCET-10-0767); 中央高校基本科研业务费专项资金项目(10CX05006A) |
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| 摘 要： | 采用递推矩阵方法计算过套管电阻率测井响应的修正传输线方程,并模拟不同地层模型的测井响应,考察水泥环、电极距、套管非均匀性等因素对测井响应的影响。该方法在传输线方程系数中考虑径向含多个界面地层的影响,可以给出轴向呈层状、径向阶跃变化地层模型的电势分布,具有计算量小、易编程、无溢出等优点。模拟结果表明:递推矩阵方法具有很强的地层界面轴向分辨能力;低电导率水泥环对高电导率地层的测井响应产生更为明显的影响;径向存在多个地层界面时计算结果为径向各层电导率的综合反映;套管变薄或变厚对测井响应都有一定影响且测井异常发生在套管突变点附近;电极距对测井结果亦产生影响。
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| 关 键 词： | 电测井 电导率 套管 传输线方程 递推矩阵方法 |
Recursive matrix method for simulating response of through-casing resistivity logging |
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| WEI Bao-jun,TIAN Kun,ZHANG Xu,LIU Kun.Recursive matrix method for simulating response of through-casing resistivity logging[J].Journal of China University of Petroleum,2011(6):59-65,70. |
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| Authors: | WEI Bao-jun TIAN Kun ZHANG Xu LIU Kun |
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| Institution: | WEI Bao-jun1,2,TIAN Kun1,ZHANG Xu1,LIU Kun1 (1.College of Physical Science and Technology in China University of Petroleum,Qingdao 266555,China,2.Key Laboratory of New Energy Physics & Material Science in Universities of Shandong,China University of Petroleum,China) |
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| Abstract: | A modified transmission line equation(MTLE) for simulating the response of through-casing resistivity logging was computed by a recursive matrix method.The response of different formation models was simulated by the method,and the influence of such factors as cement layer,electrode spacing and heterogeneous casing was analyzed by the method.The influence of formation with multiple boundaries in radial direction was included in the coefficients of the transmission line equation,so the distribution of potenti... |
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| Keywords: | electric logging electric conductivity casing transmission line equation recursive matrix method |
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