补偿密度测井高分辨率处理技术研究

A Study on the Resolution Enhancement Technique for the Compensated Density Log.

安丰全，唐炼，牛华，等．补偿密度测井高分辨率处理技术研究．测井技术，１９９７，２１（５）：３２３～３２６从密度测井原理入手，对补偿密度测井曲线纵向分辨率低的原因进行分析，发现补偿密度测井数学转换模型是导致其分辨率低的重要原因之一。提出对α因子技术的改进方法，即加入井眼影响校正因子和相关性因子，使近接收器高频信息真实可靠。该处理方法不仅可将补偿密度测井曲线的纵向分辨率提高到０．２０ｍ，其统计精度优于常规高密采样密度曲线，而且保持了常规采样密度测井曲线的统计精度。

The reason for the poor vertical resolution of the compensated density log is studied from the principle of density log. It was found that the mathematical conversion model leads to its poor vertical resolution. A method is proposed to improve α factor technique in which borehole effect correction factor and coherence factor are used to make the high frequency information from the near detector more reliable. This technique not only improves the vertical resolution to 0 20 m, but also keeps a good statistical accuracy of the log with common sample interval, which is much better than that of the unprocessed log with denser sample interval. This technique proves applicable and reliable by means of a series of tests.