基于数值模式匹配法的过套管电阻率测井响应层厚和围岩影响

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摘要过套管电阻率测井能够有效测量金属套管外地层电阻率,对国内油气田的剩余油评价和动态监测具有重要意义。采用数值模式匹配法（NMM）对层厚和围岩对过套管电阻率测井响应的影响进行了分析,数值模拟结果表明当目标地层厚度大于电极距时,地层和围岩电阻率的差异对测井影响不明显,视电阻率曲线可以反映真实的地层信息。当目标地层厚度小于电极距时,地层和围岩电阻率的差异越大,测井响应数值和地层真实值差别越显著。在数值计算的基础上建立了层厚和围岩影响校正图版,提出了采用校正图版进行层厚和围岩校正的方法。

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	张超
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	史常凯

关键词 ：过套管电阻率测井, 数值模式匹配法, 层厚, 围岩, 校正方法

Abstract：Through casing resistivity logging can measure the layer resistivity efficiently, so it has great significance on the residual oil evaluation and dynamic monitor. In this paper the influence of layer thickness and surrounding rock on through casing resistivity logging response is analyzed based on numerical mode-matching method (NMM). The results show that when the layer thickness is larger than electrode distance, the difference between layer and surrounding rock has little effect on the logging response. When the layer is smaller than the electrode distance, the apparent resistivity deviates from the real value of layer more obvious when the difference between layer and surrounding rock becomes larger. Based on numerical computing resultsly, as correction plate is established and corresponding correction method is proposed to correct the results due to the influence of layer thickness and surrounding rock.

Key words： Through casing resistivity logging numerical mode-matching method layer thickness surrounding rock correction method

收稿日期: 2014-05-13 出版日期: 2015-11-30

PACS:

TM153

基金资助:国家自然科学基金资助项目（51277169、51207150）

作者简介: 张超女,1983年生,硕士,助理研究员,研究方向为电磁场数值模拟方法和谐振式无线电能传输技术。刘国强男,1971年生,研究员,博士生导师,研究方向为电磁探测与成像技术、电磁场正逆问题数值模拟方法和谐振式无线电能传输技术。（通信作者）

引用本文:

张超, 刘国强, 刘宇, 史常凯. 基于数值模式匹配法的过套管电阻率测井响应层厚和围岩影响[J]. 电工技术学报, 2015, 30(22): 256-262. Zhang Chao, Liu Guoqiang, Liu Yu, Shi Changkai. Layer Thickness and Surrounding Rock Influence on Through Casing Resistivity Logging Based on Numerical Mode Matching Method. Transactions of China Electrotechnical Society, 2015, 30(22): 256-262.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I22/256

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