利用声波测井技术计算地层剥蚀厚度——以鄂尔多斯盆地为例  

Denudation Thickness Estimation of Sedimentary Formation in Ordos Basin by Acoustic Logging Information

作　　者：翁望飞[1] 王建强[2] 张蓉蓉[3] 陈洪[2] 桂小军[2] 

机构地区：[1]安徽省地质矿产勘查局332队地调院,安徽黄山245000 [2]西北大学大陆动力学国家重点实验室,西安710069 [3]中国石化华东分公司,南京210011

出　　处：《新疆石油地质》2011年第2期143-146,共4页Xinjiang Petroleum Geology

基　　金：国家重点基础研究发展规划项目(2003CB214607)

摘　　要：通过分析利用声波时差资料计算地层剥蚀量的方法原理及其适用条件,认为该方法能够用于计算鄂尔多斯盆地早白垩世以来遭剥蚀地层的厚度。计算结果表明,盆地剥蚀量较大的地区在神木、榆林、佳县等东部地带,剥蚀量可在1 400 m之上,由东往西剥蚀量逐渐降低,至环县、镇远等盆地西部地区,地层剥蚀量最低,仅在400 m左右,反映出鄂尔多斯盆地的后期改造具东部强西部弱、边缘强内部弱的特点。By analyzing the principle of the method for estimating the denudation thickness according to interval transit time information and its applicable condition,it is recognized that the method can be used to estimate the denuded thickness after the Early Cretaceous in Ordos basin.The estimation result shows that the gradual denudation decreases from east to west： in eastern areas such as Shenmu,Yulin and Jiaxian whose strata had been denuded over 1 400 m;while in western areas such as Huanxian and Zhenyuan whose strata had been denuded about 400 m.It reflects that the late reconstruction of this basin is characterized by the strong in the eastern and boundary areas and the weak in the western and inner areas.

关 键 词：鄂尔多斯盆地 声波时差 泥岩压实 地层剥蚀 早白垩世 

分 类 号：P512.2[天文地球—地质学]