火山碎屑岩岩性的测井识别方法研究.doc

文档介绍：火山碎屑岩岩性的测井识别方法研究        【中文摘要】本文主要是采用贝叶斯判别分析的方法对海拉尔盆地乌尔逊凹陷的大磨拐组、南屯组和铜钵庙组的岩性识别。文中利用地质和录井的资料对海拉尔盆地的岩性的测井响应特征进行了回纳和总结。并且提取了井径好、岩性厚的层段做为判别岩性的样本。用马尔科夫链的转移矩阵做为贝叶斯判别方法的先验概率来确定岩性,以减少人为的因素的影响,并且也能和实际地质情况相结合。用C++编出贝叶斯判别岩性的程序,在结合马尔科夫链的转移概率矩阵来判别未知处的岩性。然后用卡奔软件呈现判别出的岩性的剖面图,用来和地质资料得对比,并统计了符合率。');【Abstract】TheHailarBasin,innorthernpartoftheInnerMongoliaAutonomousRegionandtothewestsideoftheDaHingganmountains,wasaLateMesozoic-Paleogenebasin,-andNNE-,itcreatedinEarlyCretaceous,,itisalargeunsymmetricalfault-depressionsagwithstrike-slipcharacteristicsinMesozoic-CenozoicinHailaerBasin,theareais2350km2,thedepression’,innorththeeastboundaryfaultisalittlesmall,butitsreversetisdistinct,andgrowthtimeisearly,,NWfaultisitsmainboundaryfaultinthewestside,isalsonamedUrxunwestfaultsouthsection,,andisalsoalargeunsymmetricalfault-depressionsagwithstrike-slipcharacteristic,wecoulddivideUrxundepressionintoUrxunnorthfa