渤中凹陷低阻油层成因及测井识别方法研究

低阻油层测井识别是常规测井评价的一大难点问题，其中油层低阻在很大程度上对测井解释符合率产生影响。为了进一步提高低阻油层的解释符合率，该文以测井资料为基础，结合录井、岩心实验分析、测试分析化验等资料，从沉积作用、成岩作用的角度针对渤中凹陷地区低阻油层的成因及测井识别方法开展分析。研究结果表明:渤中凹陷低阻油层主要为薄层低阻油层和泥质引起的低阻油层。另外，采用纵向响应离散法对测井曲线进行处理，依据校正后数值的高低可以对薄层低阻油层进行识别；用双饱和度法可以对泥质引起的低阻油层进行识别。通过获取渤中凹陷低阻油层成因与两种方法对低阻油层的识别效果，为充分挖掘低阻油层潜力和油田高效可持续开发提供重要技术支撑。

Genesis and Logging Interpretation Methods of Low-Resistance Reservoirs in Bozhong Sag

In conventional logging evaluation, logging identification of low-resistivity reservoirs is a difficult problem and it has an impact on the coincidence rate of logging interpretation to a great extent. In order to improve the interpretation coincidence rate of low-resistivity reservoirs, based on logging data, combined with logging, core experimental analysis, test analysis and other data, genesis and logging identification methods of low-resistivity reservoirs in Bozhong Sag are analyzed from the perspective of sedimentation and diagenesis. The research results show that low-resistivity reservoirs in Bozhong Sag are mainly thin and muddy ones. In addition, thin low-resistivity reservoirs can be identified according to corrected values of the logging curve processed by the vertical response discrete method, and the double saturation method can be used to identify low resistivity reservoirs caused by argillaceous. By obtaining the genesis of low-resistivity reservoirs and the identification effect of the two methods on low-resistivity reservoirs in Bozhong Sag, it provides significant technical support for fully tapping the potential of low-resistivity reservoirs and developing oilfields efficiently and sustainably.