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火成岩油气藏是一种隐蔽的岩性油气藏,与常规油气藏相比,有其自身的特点。以含油气盆地中火成岩储层研究的可操作性和实用性为基础,结合中国已发现的各种火成岩油气藏,阐述了常见火成岩的岩相类型及其特征以及有利储集相带。分析了火成岩储层的储集空间类型及成因,其储集空间一般可分为原生和次生2个大类、19个小类。讨论了火成岩油气藏特有的成藏条件,火成岩油气藏的形成主要受到烃源岩的位置、保存条件、构造及岩浆活动4方面的共同影响,邻近烃源岩、油气聚集之前适度的构造运动以及岩浆活动有利于形成火成岩油气藏。
The igneous reservoir is a hidden lithologic reservoir, which has its own characteristics compared with conventional reservoirs. Based on the maneuverability and practicability of mid-igneous reservoirs in petroliferous basins, combined with the various igneous reservoirs that have been discovered in China, the types and characteristics of common igneous rocks and the favorable reservoir facies belts are described. The types and causes of reservoir space of igneous reservoir are analyzed. The reservoir space can be divided into two major categories, primary and secondary, and 19 sub-categories. The formation conditions of igneous reservoirs are mainly affected by the location of source rocks, preservation conditions, tectonics and magmatism. Adjacent to source rocks, modest tectonic movements before hydrocarbon accumulation, and Magmatic activity favors the formation of igneous reservoirs.