松南后五家户气田确定有效测井参数的新模式

NEW METHODS IDENTIFYING EFFICIENT LOGGING PARAMETERS IN HOUWUJIAHU GAS FIELD IN THE SOUTH PART OF SONGLIAO BASIN

松南后五家户气田存在着几组含有高放射性物质的储层 ,对自然伽马测井曲线影响很大 ,所以用自然伽马曲线计算的泥质含量偏高或不准 ,而必须用电阻率曲线计算泥质含量才较为准确。在未压实和含气的储层中 ,用传统的方法计算出的有效孔隙度往往偏差过大 ,于是可用钻井液电阻率和微电位值求出的有效孔隙度对其进行校验。此外 ,文章探讨了特低矿化度地层含水饱和度计算的精度在对不同的含水饱和度计算的经验公式进行分析对比后 ,认为只要对印尼公式中的某些参数进行合理地修改 。

There are several revervoirs containing high radioactivity materials in Houwujiahu gas field in the south part of Songliao Basin,which have great influence on natural gamma ray log,so that the shale content calculated by use of the natural gamma ray log is higher than the practical value.For this reason,only by resistivity log can the shale content be accurately calculated.In an uncompacted and gas bearing reservoir,the effective porosity calculated by traditional methods is often greatly deviated from t...