岩性油气藏 ›› 2021, Vol. 33 ›› Issue (3): 8594.doi: 10.12108/yxyqc.20210308
张汶, 吕世聪, 赵大林, 贾海松, 蔡越钎
ZHANG Wen, LYU Shicong, ZHAO Dalin, JIA Haisong, CAI Yueqian
摘要: 为研究渤海湾盆地西南部古近系东营组和沙河街组滩坝沉积特征及主控因素,开展了岩心观察、薄片鉴定、测井分析、压汞测试等研究,并结合古地貌特征对各类滩坝沉积模式及其差异性进行了综合分析。结果表明:①研究区滩坝类型主要包括砂质滩坝、砾质滩坝、混积滩坝和碳酸盐岩滩坝等4种类型。②物源供给强度、古地貌、古水深及古风浪等4个因素共同控制了滩坝的类型及沉积特征,其中物源供给强度是物质基础,控制了滩坝砂体类型,古地貌与古水深控制了滩坝砂体的厚度和分布位置,古风浪影响了滩坝砂体的展布形态。③砂质滩坝、混积滩坝和碳酸盐岩滩坝储层物性较好,测试产能高,为研究区油气勘探的有利目标。该研究成果可为滩坝储层的油气勘探提供借鉴作用。
中图分类号:
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