银—额盆地岩浆岩地震反射特征及与油气关系分析

Relation Between Seismic Facies Characteristics and Oil - Gas of Magmatite in Yin’e Basin

陶国强¹,肖　斌²

Tao Guoqiang, Xiao Bin

1.中国地质大学(北京);2.中原油田分公司勘探处

Geology University of China , Beijing , P. R. China

银—额盆地中、新生代岩浆活动频繁,侵入岩和火山岩极为发育。通过对侵入岩和火山岩的形成、产出条件、分布特点、岩石类型和岩相特征分析,从地震资料入手,以地震相分析的方法,将岩浆岩的地震反射特征分为侵入岩和火山岩,进而将火山岩的地震相归纳为板状反射地震相、丘状或弧状反射地震相、楔状反射地震相、舌状反射地震相和蘑菇状反射地震相5 种,解释了它们的地层涵义,并以此为基础提出了岩浆岩与油气的关系,分析岩浆岩的地震反射特征对油气勘探具有重要意义。

In the Yin’e Basin , magmation were happened frequently in Cenozoic , also there are a lot of intrusive rock and volcanics. This paper analyses its forming mechanism , distribution , types and lithological characteristics of the intrusive rock and volcanics with seismic information. The magmatite seismic facies is divided into intrusive rock and volcanics , and furtherly the volcanics seismic facies is divided into plated , mounded or arcuated , wedged , tongued and mushroomed seismic facies , and interpretating their importance. Based on this , the relations both magmation and oil – gas is provided , finally , it is analyzed that the seismic facies characteristics is very important in hydrocarbon exploration.