天然气储层孔隙度测井解释方法研究

Study on porosity log interpretation methods of gas reservoir

测井曲线受天然气影响,致使测井值不能准确反映储层孔隙度。为了准确掌握储层孔隙度,可以实验室岩心分析资料为基础,利用两种方式对它解释:一是利用声波时差测井解释孔隙度;二是利用密度测井和中子测井资料解释气层孔隙度。实践证明,采用这两种方法的实际应用结果与岩心实测结果吻合较好。

For logging trave influenced by gas saturation,log data can't reflect reservoir porosity.To know the accurate reservoir porosity,we can interpret it on the basis of lab core analysis data in these two ways: first,using sonic wave moveout in logging to interpret it;second,using density logging and neutron well logging data to interpret it.The practice has proved the application results of adopting these two methods tally with the actual logging results of core well.