压性盆地层序结构的二元性特征研究——以焉耆盆地博湖坳陷侏罗系为例

将层序地层学基本原理与压性盆地控制因素相结合,通过各种地质、钻井、测井和地球物理等资料的综合分析,建立了焉耆盆地博湖坳陷前陆盆地层序地层格架,综合分析前陆盆地挤压构造背景下层序结构的二元性特征,并在此基础上建立起博湖坳陷侏罗系的层序发育模式,分析了二元性层序发育机理。并指出在油气勘探中,应以层序底部的岩性油气藏或构造-岩性混合油气藏为主要勘探目标。

Dual Features of Sequence Structures in Compressional Basin——An Example from Jurassic Bohu Depression of Yanqi Basin

According to the basic concepts of sequence stratigraphy and the controlling factors of compressional basin,dual features of sequence were found and sequence stratigraphy framework of Bohu depression was set up,based on an integrated investigation of well logs,seismic data,cores and outcrops.According to all of them,sequence development mode was built,and causes of dual features were analyzed.Based on the special dual features,it was indicated that lithology reservoir or lithology-tectonic reservoir on the ...