岩性油气藏 ›› 2023, Vol. 35 ›› Issue (5): 131138.doi: 10.12108/yxyqc.20230513
朱秀香1, 赵锐1,2, 赵腾2,3
ZHU Xiuxiang1, ZHAO Rui1,2, ZHAO Teng2,3
摘要: 塔里木盆地顺北地区沿走滑断裂带展布的特深层断控缝洞型油气藏具有明显的分段性。通过三维地震断裂精细解释,综合钻井、测井、试采等资料对顺北1号断裂带走滑分段特征及分段内部储集体结构差异性及成因进行了研究,优选出有利的储集体类型。研究结果表明: ①顺北1号断裂带由8个几何分段斜列叠置而成,每个几何分段形成一套独立的储集单元,单个储集单元的内部缝洞结构基本一致,但相邻储集单元的内部缝洞结构差异明显,且彼此间油气藏不连通。②几何分段的内部缝洞结构由走滑构造的活动强度控制,据此可以划分出内洞外缝结构、双重洞-缝结构与大型“均质”储集体等内部储集体结构类型,其中大型“均质”储集体发育多套缝洞体,缝洞尺寸大、数量多、内部连通性强,有利于油气富集。
中图分类号:
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