岩性油气藏 ›› 2017, Vol. 29 ›› Issue (6): 6975.doi: 10.3969/j.issn.1673-8926.2017.06.009
李延丽1, 王建功1,2, 石亚军1, 张平1, 徐丽1
LI Yanli1, WANG Jiangong1,2, SHI Yajun1, ZHANG Ping1, XU Li1
摘要: 近年来,在柴达木盆地西南部英雄岭西段下干柴沟组上段首次发现了大型盐湖相自生自储油藏。为了明确该地区自生自储型油藏的油气成藏机理,并有效预测油气资源量,通过典型井岩心观察、地球化学分析、测井响应特征对比等,建立了地化参数标定下的自然伽马-电阻率测井曲线重叠法进行烃源岩识别,确定了盐湖相烃源岩的岩性及测井上定性或定量识别标准,并运用该方法对红狮凹陷烃源岩进行测井识别。柴达木盆地西南部盐湖相烃源岩不同于淡水湖盆相烃源岩,盐湖相烃源岩具有较强的非均质性,电性特征为高伽马、高电阻率的泥岩及灰质泥岩是有效烃源岩。利用自然伽马-电阻率重叠法识别烃源岩方法简单、效果直观、准确率高,对复杂岩性区油气资源量的快速评价及勘探部署具有重要的意义。
中图分类号:
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