辽河油田东部凹陷火成岩分布及油气成藏组合

Igneous Rock Distribution and Reservoir-forming Combination in the Eastern Sag of Liaohe Depression

辽河坳陷东部凹陷火成岩广泛发育,从中生界到上第三系馆陶组各层段中均有分布。综合研究表明,东部凹陷沙三段火成岩具有成藏优势,目前勘探发现的火成岩油气藏主要集中在沙三中亚段。对东部凹陷火成岩油气藏的分布特征及成藏组合类型进行了总结,以期对下一步东部凹陷火成岩油气藏勘探起到实际的指导意义。

Igneous rocks were widely developed in the eastern sag of Liaohe Depression,which were distributed in each section from Mesozoic to Neogene Guantao Formation.A comprehensive study shows that there is a superiority in hydrocarbon accumulation in igneous rocks in the middle member of Es3 of the eastern sag,and currently discovered igneous reservoirs were mainly concentrated in the middle member of Es3.The distribution characteristics and reservoir-forming combination types of igneous reservoirs in the eastern sag are researched and summarized for guiding the igneous rock reservoir exploration in the eastern sag and other areas with similar geological conditions.