吉林大学学报(地球科学版) ›› 2019, Vol. 49 ›› Issue (6): 1529-1539.doi: 10.13278/j.cnki.jjuese.20180238
李红进1, 张道勇2, 葛云锦1, 王翊超3, 徐刚4
Li Hongjin1, Zhang Daoyong2, Ge Yunjin1, Wang Yichao3, Xu Gang4
摘要: 以岩心分析、测井数据为基础,结合薄片鉴定、扫描电镜等分析手段对鄂尔多斯盆地甘泉-富县地区长7致密砂岩储层的岩性、物性以及成岩相进行了研究。长7致密砂岩储层岩性主要以长石砂岩为主,孔隙度主要分布在3%~10%之间,渗透率主要分布在0.05~0.60 mD之间。依据成岩作用类型和强度及成岩矿物组合特征,并结合孔隙发育特征,将研究区内岩相划分为中压实绿泥石薄膜胶结原生粒间孔相、中压实不稳定组分溶蚀溶孔相、强压实弱溶蚀微孔相、强压实伊利石胶结致密相和强压实钙质胶结致密相5类。通过对成岩相较为灵敏的自然伽马和声波时差交汇建立成岩相识别标准,利用"优势相"法绘制研究区成岩相平面图。勘探成果显示,成岩相对致密油富集具有一定控制作用。
中图分类号:
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