核测井曲线高分辨率处理技术及其应用

RESOLUTION ENHANCEMENT TECHNIQUE OF RADIOACTIVE LOGGING AND ITS APPLICATION

着重探讨了放射性测井曲线中自然伽马测井曲线、补偿中子测井曲线和补偿密度测井曲线的高分辨率处理方法及其应用效果。对于自然伽马及自然伽马能谱测井曲线，采用反褶积技术和有效的噪音压制技术；对于补偿中子测井曲线和补偿密度测井曲线采用了改进的α因子法。可以发现：高分辨率处理技术可明显地改善有关曲线的纵向分层能力；处理后的曲线与岩心柱状图及与微球、微电极等高分辨率曲线进行对比，其相关性有很大的改善；应用高分辨率处理后的曲线求薄层的泥质含量等参数，其相对误差明显下降。

This article mainly deals with the resolution enhancement technique and its application in radioactive logs, such as natural gamma log, compensated neutron log and compensated density log. For the GR log, the deconvolution and the noise compression techniques are adopted. For the CNL and LDT logs,the improved a factor method is used.It is found that the resolution enhancement can obviously improve the bed-delineating ability of the related logs. The processed logs can be compared with the MSFL,the micro-logs and the core columns excellently.The parameters, such as the shale content computed with the processed logs, are much better in decreasing errors.