薄层电阻率的测井响应校正方法研究  

Research on log response correction method of sheet resistivity

作　　者：王欣[1] 潘雨舟 

机构地区：[1]中国石化华东分公司石油勘探开发研究院,江苏南京210011

出　　处：《油气藏评价与开发》2015年第4期55-57,共3页Petroleum Reservoir Evaluation and Development

基　　金：国家自然科学基金重点项目(编号:11134011)资助

摘　　要：厚度小于2 m的储层，由于受仪器纵向分辨率的限制，其电阻率的测井响应受围岩影响较大，往往很难直接反映目标地层的真实电阻率值。通过有限元数值模拟的方法，模拟了不同厚度下（0.1--10 m）的电测井响应值，取地层真实电阻率与其比值来确定储层电阻率的校正系数，在此基础上，编制了不同厚度下电测井响应的校正图版。苏北G区块的实例证明，应用校正图版校正后的薄层电阻率值更接近真实地层电阻率。Limited to longitudinal resolution of apparatus, surrounding rock has great effects on log response of resistivity when res？ervoir thickness is less than 2 m. It is difficult to direct react real resistivity of target strata. Through finite element （FEA） numerical simulation method, electric logging response value of different reservoir thickness （0.1～10 m） was simulated. Take real strata resis？tivity and its ratio to determine correction coefficient （CF） of reservoir resistivity. On this basis, correction chart of electric logging response under different reservoir thickness was compiled. After using correction chart, examples of block G in North Jiangsu oil？field show that sheet resistivity is closer to the true formation resistivity.

关 键 词：薄层 电测井响应 有限元 

分 类 号：P631.821[天文地球—地质矿产勘探]