岩性油气藏 ›› 2017, Vol. 29 ›› Issue (2): 107116.doi: 10.3969/j.issn.1673-8926.2017.02.013
唐建云1,2, 王志维3, 也尔哈那提·黑扎提1,2, 朱剑兵4, 陈玉宝5
TANG Jianyun1,2, WANG Zhiwei3, YE'ERHANATI Heizhati1,2, ZHU Jianbing4, CHEN Yubao5
摘要: 为了明确鄂尔多斯盆地旬邑探区三叠系不同层位烃源岩的生烃潜力及延长组油藏油-源等地质问题,针对旬邑探区三叠系延长组是否存在有效烃源岩及石油来源的争议,应用有机岩石学和地球化学对探区内的烃源岩及原油样品进行了分析。结果表明,探区延长组长7 烃源岩干酪根类型主要为Ⅰ型和Ⅱ型,其次为Ⅲ型,有机质成熟度中等,为好烃源岩。通过油-油及油-源样品对比分析,认为长6 原油、长8 原油与长7 烃源岩具有相似的沉积环境与成熟度,均为成熟油,其沉积环境为淡水、弱氧化还原环境;生油母质类型具有以藻类生源为主的混合型特征。旬邑探区长7 烃源岩对长6 和长8 油藏的形成具有一定的贡献。
中图分类号:
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