欧利坨子油田火成岩油藏成藏条件分析

Analysis of igneous reservoir forming conditions in Oulituozi Oilfield

火成岩油气藏作为特殊的油气藏,储集条件特殊而且严格。以辽河盆地东部凹陷欧利坨子油田欧51井区沙三中段储层为例,从油源、油气运移、储层性质、圈闭特征等方面分析了形成火成岩油藏的必要条件,并对研究区火成岩油藏类型进行了划分,特别指出了该区断层对火成岩油气藏的形成所起的优化作用。研究得到的火成岩成藏规律不仅有利于该地区油藏,也对其他地区相同类型油气藏的勘探和开发具有参考价值。

As a special reservoir,the reserving condition of igneous reservoir is particular and strict.Taking the reservoir of Oulituozi oil field in the east depression of Liaohe Basin as an example,the paper analyses the necessary conditions of forming igneous reservoir in aspects of the oil origin,the migration,the reservoir property and the trap characteristics,and also classifies the types of igneous reservoir.The optimizing function of faults on forming igneous reservoir is described especially.The result of the study is not only helpful to the reservoir in this area,but also to the similar reservoirs in other areas.