岩性油气藏 ›› 2022, Vol. 34 ›› Issue (4): 112.doi: 10.12108/yxyqc.20220401
罗群, 张泽元, 袁珍珠, 许倩, 秦伟
LUO Qun, ZHANG Zeyuan, YUAN Zhenzhu, XU Qian, QIN Wei
摘要: 致密油甜点是致密油勘探开发的核心领域。通过对酒泉盆地青西凹陷白垩系致密油储层的成藏富集规律研究,揭示了致密油甜点的内涵、评价与优选方法。研究结果表明:①致密油甜点是含油气盆地细粒沉积体系中整体低丰度含油背景下的相对高丰度含油区域(或层位),致密油甜点可分为物性甜点、油藏甜点、工程甜点、产能甜点和经济甜点等5类,其中物性甜点和油藏甜点合称为地质甜点。②控制致密油甜点的主要地质因素包括岩性组合特征、源储品质、源储组合类型和裂缝发育程度。③致密油甜点的评价与优选方法为优质源岩Ro定边界、源储组合定区带、四优(优源、优相、优缝、优配)匹配定甜点、多层联合定井轨迹,该套致密油甜点评价与优选方法对油气田高效勘探开发具有指导意义。
中图分类号:
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