川南区域构造体系特征与油气富集关系

RELATIONSHIP BETWEEN THE FEATURES OF THE REGIONAL TECTONIC SYSTEM AND THE ACCUMULATION OF PETROLEUM IN SOUTHERN SZECHUAN

赵从俊 欧振洲

Zhao Congjun Ou Zhenzhou

四川石油管理局地质勘探开发研究院

Geological Exploration and Development Research Institute

川南是四川天然气主要产区之一,经二十多年的勘探、开发与综合研究,积累了大量成果。近年来,阳深1井于古生介奥陶系宝塔灰岩钻遇良好的气显示,相国寺气田在中石炭系获新的高产气藏,进一步展示了川南油气勘探向纵深发展的远景。笔者等运用地质力学方法,对川南构造体系与含油气关系进行了研究,提出以下认识。

Tectonic system is the main factor which controls the accumulation of petroleum, and the local structures is the important prerequisite for oil preservation. The distribution of highly productive gas fields in Southern Szechuan is controlled by the "suitable" structure which is formed by the multi-system composite.The inheritant uplift in the ancient and modern tectonic systems is disadvantageous to petroleum preservation; the composite tectonic system,which is formed on the background of inharmonic depressions and slops, is favaorable for both petroleum accumulation and preservation.

https://doi.org/10.11781/sysydz198103166