鄂尔多斯盆地南部延长组油页岩地球化学特征及分布规律

Geochemical characteristics and distribution rules of oil shale from Yanchang Formation, Southern Ordos Basin

邓南涛 张枝焕 任来义 王付斌 梁全胜 李宇翔 李文浩 赵双丰 罗梦姣

Deng Nantao Zhang Zhihuan Ren Laiyi Wang Fubin Liang Quansheng Li Yuxiang Li Wenhao Zhao Shuangfeng Luo Mengjiao

中国石油大学(北京) 油气资源与探测国家重点实验室, 北京 102249 2. 陕西延长石油(集团) 有限责任公司研究院, 西安 710075 3. 中国石油化工股份有限公司 华北分公司, 郑州 450006

State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China 2. Research Institute of Shaanxi Yanchang Petroleum (Group) Co. Ltd, Xi'an, Shaanxi 710075, China 3. SINOPEC North China Company, Zhenzhou, Henan 450006, China

基于对鄂尔多斯盆地南部(镇泾—彬长—旬宜—富县地区)延长组不同层段暗色泥岩、碳质泥岩及油页岩样品的地球化学和测井资料的对比分析,研究了油页岩的识别标志及其分布规律。结果表明,不同岩性样品的生物标志物、生烃潜力及测井电性特征差异明显,油页岩具有典型的地球化学和地球物理综合识别标志,分布受沉积环境的控制作用显著,靠近湖盆中央的深湖—半深湖相带是油页岩的主要发育区。

Based on the geochemical features and logging data of dark mudstone, carbonate mudstone and oil shale samples from different layers of the Yanchang Formation in the southern Ordos Basin (including Zhengjing, Binchang, Xunyi and Fuxian areas), the identification markers and distribution characteristics of oil shale have been investigated. The result shows that there are significant differences in biomarker characteristics, hydrocarbon generation potential and logging electrical characteristics. Oil shale has typical geochemical and geophysical composite identification marks. The distribution of oil shale is significantly controlled by sedimentary environment. Deep or semi-deep lacustrine facies which is near to the center of lake basin is the main development zone for oil shale.

国家重大专项基金"鄂南低渗油藏成藏模式与勘探目标评价"(2011ZX05002-001-003);中国石化专项基金"鄂南中生界生烃条件及油源对比研究"(G13KJ-11-ZS-QT-ZJ-0005)资助。

https://doi.org/10.11781/sysydz201304432