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以济阳坳陷纯化油田火成岩油气藏的开采特征及地质资料分析为基础,总结了侵入岩-泥岩变质带油气藏的特征和成因。根据侵入岩刺穿地层产状的不同,将泥岩变质带油气藏划分为上拱刺穿和顺层刺穿2种类型。上拱刺穿型油气沿复合输导体系运移,多形成环状或圆片状裂缝型油气藏;顺层刺穿型油气以侧向运移为主,以形成大规模的片状油气藏为特征。研究表明,泥岩变质带在岩心特征、测井相和地震相上均具有明显的识别标志,具有良好的勘探前景,该油藏类型的提出扩大了火成岩相关油气藏的找油领域。
Based on the characteristics of the igneous reservoirs in the purified oilfield of Jiyang Depression and the analysis of geological data, the characteristics and genesis of the intrusive-mudstone metamorphic zone reservoirs were summarized. According to the different formation of penetrating strata, the mudstone metamorphic zone reservoirs are divided into two types: the upper arch and the lower layer. Arched transgressive hydrocarbons migrate along the composite transport system to form annular or disk-shaped fractured reservoirs. Lateral transgressive reservoirs migrate laterally to form large-scale sheet-shaped reservoirs For the characteristics. The research shows that the mudstone metamorphic belt has obvious identification sign on cores, log facies and seismic facies, and has good exploration prospect. The proposed reservoir type enlarges the field of oil exploration for igneous reservoirs.