岩性油气藏 ›› 2023, Vol. 35 ›› Issue (3): 126137.doi: 10.12108/yxyqc.20230311
柳忠泉1, 赵乐强1, 曾治平1, 田继军2, 李正强2, 罗锦昌2, 胡美玲3
LIU Zhongquan1, ZHAO Leqiang1, ZENG Zhiping1, TIAN Jijun2, LI Zhengqiang2, LUO Jinchang2, HU Meiling3
摘要: 准噶尔盆地阜康断裂带地处盆地前陆冲断带,构造复杂,勘探开发潜力大。通过烃源岩有机地球化学测试、铸体薄片鉴定、扫描电镜分析等对准噶尔盆地阜康断裂带二叠系芦草沟组页岩油成藏条件进行了分析。研究结果表明:①阜康断裂带二叠系芦草沟组烃源岩有机质丰度高,TOC质量分数平均为3.65%,有机质类型主要为Ⅱ1型,Ro值为0.76%~1.41%,多处于成熟-高成熟阶段,为一套好-优质烃源岩。②研究区芦草沟组储层孔隙度平均值为5.12%,渗透率为0.02~2.69 mD,为一套低孔-特低孔、特低渗储层;储层岩石类型复杂,是以泥页岩、粉砂岩、碳酸盐岩为主的一套混积岩,脆性矿物质量分数平均为82.96%;储集空间类型包括粒间孔、晶间孔、溶蚀孔、有机质孔和微裂缝。③广覆式烃源岩、大面积连续分布的优势岩相以及有利的源储组合控制了研究区芦草沟组页岩油的富集成藏,形成了"源储紧邻的夹层型"与"源储一体的基质型"共存的页岩油富集模式,大龙口地区、小龙口-奇1井地区可作为下一步勘探开发的重点区域。
中图分类号:
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