随钻测井自动分层取值方法研究

以准噶尔盆地莫北油田为例 ,在综合分析比较现有的随钻测井曲线各种分层取值方法的基础上 ,采用极值方差聚类法来实现测井相分析的自动分层取值 ,更加突出了层间非均质差异性和层内均一性。通过对莫北油田莫 0 0 5井区砂泥岩剖面的数字化测井曲线自动分层取值处理 ,其结果与实际的岩性剖面手工分层十分吻合。为该区的自动测井相分析 (随钻测井自动分层取值 )建立了一套有效的分层取值方法

The study on the method of LWD automatic selected - value by layers

Taking Mobei oilfield as an example, on the basis of comprehensive analyses and comparison of the current various methods of LWD log-curves automatic selected-value by layers; this work adopts the extremum square-deviation clustering to realize automatic selected-value by layers; thus it makes the inhomogeneity difference of inter-layers and the inner-layers homogeneity sticking out. By using automatic selected-value to process the data of the log curves' digitization of sand-mudstone sections in the Well Block Mo-005 in the Mobei oil-field, the result is corresponding to the practice manual classified-layers lithological section very well. It establishs a set of effective method of selected-value by layers for the automatic electrofacies analysis (LWD automatic selected-value by layers) in this area.