综合地球物理方法在内蒙古西部额济纳旗及邻区石炭系—二叠系解释中的应用

Application of the integrated geophysical methods for Carboniferous-Permian intepretation in Ejina Banner and its vicinities,Inner Mongolia,China

为了了解额济纳旗及其邻区石炭系—二叠系的分布,为该区油气资源远景调查评价提供依据,通过对前人的资料二次开发和新完成的地球物理综合剖面精细处理与解释,利用"地震、钻井资料约束下的重、磁、电资料联合反演"方法,对该区残留的石炭系—二叠系的分布与埋藏状况进行了初步解释。结果表明,该区石炭系—二叠系总体残留厚度较大,埋深适中。该方法初步解决了对该区石炭系—二叠系分布物探解译的技术难题,为确定盆地内部石炭系—二叠系的展布状况提供了依据。

In order to understand the distribution of Carboniferous-Permian in Ejina Banner and its vicinities, and provide evidence for oil and gas resources investigation and evaluation, through fine processing and interpretation of previous data and newly finished integrated geophysical survey sections, by using joint inversion of gravity, magnetic and electronic data under restriction of seismic and well data, this paper preliminarily presented the distribution and burial situation of Carboniferous-Permian residues in the region. Thus it is concluded that the Carboinferous-Permian strata show the characteristics of thicker residual and suitable depth. The method has solved the technical problem of Carboniferous-Permian distribution interpretation and provides evidence for Carboniferous-Permian research within the internal part of the basin.