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文火成岩油气藏逐渐成为油气勘探的热点,作为储集油气的火成岩储层也有其自身的特点。文章从含油气盆地中火成岩储层研究的可操作性和实用性出发,阐述了常见火成岩的岩相类型及其相应的特征;主要分为两大类相组,八种岩相进行讨论。同时,结合国内已发现的各种火成岩油气藏,分析了火成岩中能够成为有利储层的主要相带;其中,有利储层主要集中在浅层侵入岩的中央相,喷出岩中溢流相的上部亚相和下部亚相、爆发相、侵出相的内带亚相、火山通道相的隐爆角砾岩亚相等相带中。
Wen igneous rock reservoirs have gradually become the hotspot of oil and gas exploration, as a reservoir of igneous rocks reservoirs also have their own characteristics. Based on the maneuverability and practicability of mid-igneous reservoirs in petroliferous basins, the paper expounds the lithofacies types and their corresponding characteristics of common igneous rocks. There are two major types of facies and eight types of lithofacies are discussed. At the same time, combining with the various igneous reservoirs that have been discovered in China, the main facies belts that can become favorable reservoirs in igneous rocks are analyzed. The favorable reservoirs are mainly concentrated in the central facies of shallow intrusive rocks, The upper subfacies and the lower subfacies, the explosive facies, the inner subfacies of the intrusive facies, and the sub-facies of the cryptoexplosive breccia in the volcanic channel facies.