黄骅坳陷火成岩成藏特征研究

黄骅坳陷火成岩油藏主要分布于中、南区的北东向主断裂两侧，油气主要储集于溢流相火山岩体中，气孔、溶蚀孔和构造缝为主要储集空间，构成了新生中储、下生上储和就近生储等3种成藏模型，共发育6类火成岩油藏。通过主控因素分析认为，油气成藏主要受火成岩分布与产出环境、火山岩相带与改造程度、生油凹陷与主要断裂等因素控制，而油藏规模则取决于火成岩岩体大小、供油条件。此项工作的研究为国内外其它同类油藏的勘探开发工作提供了借鉴。

Study on igneous reservoir forming conditions and distribution in Huanghua depression

Igneous reservoirs in Huanghua depression mainly distribute on both sides of the dominant NE fault in the middle and south area. Oil and gas mainly exist in the effusion facies of volcanics, with vesicle, dissolution pore and structural fractures as major reservoir spaces, occurring as Cenozoic source and Mesozoic preservation, lower source and upper preservation, and nearby source and preservation these three reservoir forming patterns. All together there developed six types of igneous reservoirs. Through analyzing, it is believed that the forming of reservoirs was mainly controlled by factors such as distribution and generation environment of igneous rock, facies tract and reconstruction degree of volcanic rock, hydrocarbon kitchen, and major fault; while the size of reservoir was decided by the size of igneous rock and oil-supply conditions. This study provides reference for exploration and development of similar reservoirs at home and abroad.