准噶尔盆地中拐凸起上二叠统佳木河组火山岩油气成藏演化

发布时间：2019-04-13 12:19

【摘要】：准噶尔盆地中拐凸起上二叠统佳木河组油气藏属于自生自储型火山岩油气藏,其成藏关键在于构造、岩相、油源、圈闭及储盖等条件的时空匹配。通过钻井资料、测井解释、古地貌恢复技术、相干技术等地球物理方法剖析了研究区佳木河组油气藏的成藏演化过程。结果表明:火山作用控制了火山岩储集体的规模、岩性岩相及储层的储集性能,同时巨厚的火山岩加速了佳木河组有机质的成烃作用;中拐凸起东环斜坡区发育推覆型条带状"断凸"构造,顶部经风化淋滤作用和后期构造影响,形成溶蚀孔和裂缝发育的优质储层,与其上覆的风化黏土岩组成有利的储盖组合;推覆体中断裂相互交切,发育断层遮挡圈闭,形成南北向油气富集带。
[Abstract]:The Jiamuhe formation of Upper Permian in Zhongguo uplift of Junggar Basin is an authigenic and self-storage volcanic rock reservoir, the key of which lies in the time-space matching of structure, lithofacies, oil source, trap and reservoir cap and so on. Based on drilling data, log interpretation, paleogeomorphologic restoration techniques and coherent techniques, the evolution process of the Jiamuhe formation oil and gas reservoir in the study area is analyzed in this paper. The results show that volcanism controls the size of volcanic reservoir lithology lithofacies and reservoir performance and that the thick volcanic rocks accelerate the hydrocarbon generation of organic matter in Jiamushe formation. A nappe-banded "fault-convex" structure is developed in the east ring slope area of the Zhongguai uplift, and the top is influenced by weathering leaching and later structure, forming a high-quality reservoir with corrosion pores and fractures, and forming a favorable reservoir-cap assemblage with its overlying weathered clay rock. Faults in the nappe are intersecting each other, forming fault-blocking traps and forming oil-gas enrichment zones in the north-south direction.
【作者单位】：贵州大学资源与环境工程学院;甘肃省油气资源研究重点实验室/中国科学院油气资源研究重点实验室;中国科学院大学;贵州省地质环境监测院;贵州省煤田地质局地质勘查研究院;
【基金】：国家自然科学基金(41503048) 贵州大学人才引进项目(贵大人基合字[2016]J82号)
【分类号】：P618.13

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