【摘要】 通过对米仓山周缘震旦系灯影组露头沥青的详细勘测,证实了川北地区灯影组油气成藏的可能性,并提出该区曾发育过较大规模的古油藏。以岩石学、地球化学、地球物理为基础,详细分析了米仓山前缘地区震旦系灯影组生、储、盖等油气成藏静态条件;在米仓山地区构造演化研究的基础上,动态分析了该区灯影组圈闭及保存条件的发育与演化过程,认为米仓山前缘通南巴地区灯影组油气成藏四中心(生烃中心、生气中心、储气中心、保气中心)均为原地性,四中心耦合程度高,具有良好的油气勘探前景。更多还原

【Abstract】 According to the detailed investigation of bitumen content in the outcrops of upper Sinian Dengying formation around the Micang Mountain,this paper has confirmed the possibility of early oil-gas accumulation in Dengying formation.It is pointed out that there used to be large scale of paleo-oil pool.Depending on the information of petrology,geochemistry and geophysics,this paper has analyzed the static condition for hydrocarbon accumulation,such as source rock,reservoir rock and cap rock.On the basis of Micang Mountain structural evolution,we also analyzed the evolution process of the trap and preserving condition,and suggested that the four centers(petroleum generative center,natural gas generative center,gas storing center,gas preserving center) for hydrocarbon accumulation in study area are all in the same place.This is very favorable for natural gas maintenance,and the Dengying formation in the area has good prospect for gas exploration.更多还原