济阳坳陷火成岩油气藏成藏特征分析

Analysis of igneous hydrocarbon reservoir-forming characteristics in Jiyang depression.

从生、储、盖、运、圈、保六个方面概述了岩浆活动对油气成藏的作用。对济阳坳陷火成岩油气藏的有利成藏条件、分布规律进行了分析,认为火成岩储层的分布层位对火成岩能否成藏及运聚成藏方式具有较大的影响。根据火成岩储层与生油岩的空间分布及油气运聚方式,建立了三种火成岩油气藏成藏模式,即"下生上储"型、同层运聚型和"上生下储"型。其中同层运聚型火成岩油气藏成藏条件优越,是最有利的勘探目标;油源通道发育、储层物性好的"下生上储"型火成岩油气藏也是有利的勘探目标。

Effect of magmatic activity on hydrocarbon reservoir forming was given a brief account from the aspects of generation,storage,cap-rock, migration, trap and conservation. The favorable conditions of igneous hydrocarbon reservoir forming and the distribution rule were analyzed. Distribution horizon of igneous reservoir will make a great impact on igneous reservoir forming or not and migration-accumulation pattern. According to the space distribution of igneous reservoirs and source rocks, and the modes of petroleum migration and accumulation,the igneous reservoir-forming pattern can be divided into three patterns of the lower-generation and upper-storage,the migration-accumulation in the same layer,the upper-generation and lower-storage. The pattern of migration-accumulation in the same layer,bearing the best forming conditions of igneous oil and gas reservoir, is the best target of igneous reservoir exploration. Having developed oil source channel and good reservoir properties, the lower-generation and up per-storage pattern will be another favorable target of igneous reservoir exploration.