| 再论鄂尔多斯盆地延长组长73砂层组与烃源岩相关的高伽马砂岩 |
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| 引用本文： | 郑庆华,刘行军,张小龙,王洪君,廖永乐,安二亮,刘涛,张建娜,左琴.再论鄂尔多斯盆地延长组长73砂层组与烃源岩相关的高伽马砂岩[J].现代地质,2022,36(4):1087-1094. |
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| 作者姓名： | 郑庆华 刘行军 张小龙 王洪君 廖永乐 安二亮 刘涛 张建娜 左琴 |
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| 作者单位： | 1.榆林学院 化学与化工学院,陕西 榆林 7190002.中国石油测井有限公司 长庆事业部,陕西 西安 7102013.中国石油长庆油田公司 第五采油厂,陕西 西安 710201 |
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| 基金项目： | 榆林学院博士科研启动基金项目(18GK28);教育部科技发展中心高等学校博导基金项目(20106101110020);大陆动力学国家重点实验室(西北大学)重点基金项目(BJ08133-3) |
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| 摘 要： | 针对自然伽马等常规测井系列长期仅能将鄂尔多斯盆地延长组长73砂层组大规模发育的与烃源岩相关的高伽马砂岩解释为“油页岩等优质烃源岩”的问题,根据岩心观察及测录井资料、电子探针薄片和大量页岩油实际生产资料的分析,对长73砂层组内与烃源岩相关的高伽马砂岩的定义、成因以及其发育特征与长7油层组页岩油试油效果的关系进行了探索性的研究。研究表明,鄂尔多斯盆地长73砂层组内与烃源岩相关的高伽马砂岩可划分为狭义和广义两种类型,高放射性的成因可能与深部热水作用有关,首次发现其发育特征与长7油层组页岩油试油效果关系密切。该项研究对鄂尔多斯盆地延长组长7油层组页岩油的大规模高效勘探与开发具有重要的理论和现实意义。
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| 关 键 词： | 与烃源岩相关的高伽马砂岩 页岩油 烃源岩 长73砂层组 鄂尔多斯盆地 |
| 收稿时间： | 2021-07-15 |
| 修稿时间： | 2021-11-09 |
Review of the High Natural Gamma Sandstones Associated With Source Rocks in the Chang 73 Submember of the Yanchang Formation,Ordos Basin |
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| ZHENG Qinghua,LIU Xingjun,ZHANG Xiaolong,WANG Hongjun,LIAO Yongle,AN Erliang,LIU Tao,ZHANG Jianna,ZUO Qin.Review of the High Natural Gamma Sandstones Associated With Source Rocks in the Chang 73 Submember of the Yanchang Formation,Ordos Basin[J].Geoscience——Journal of Graduate School,China University of Geosciences,2022,36(4):1087-1094. |
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| Authors: | ZHENG Qinghua LIU Xingjun ZHANG Xiaolong WANG Hongjun LIAO Yongle AN Erliang LIU Tao ZHANG Jianna ZUO Qin |
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| Institution: | 1. School of Chemistry & Chemical Engineering,Yulin University, Yulin,Shaanxi 719000, China2. Changqing Division, China Petroleum Well Logging Limited Company, Xi’an,Shaanxi 710201, China3. No.5 Oil Production Plant, PetroChina Changqing Oilfield Company, Xi’an,Shaanxi 710201, China |
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| Abstract: | For the high natural gamma sandstones associated with source rocks in the large-scale Chang 73 submember of the Triassic Yanchang Formation in the Ordos Basin, they had long been identified as high-quality source rocks (e.g. oil shales) from conventional well log profiles (e.g.natural gamma ray well logs). Based on core observation, and integrated analyses of well logging, logging, the electron microprobe and numerous actual production data of shale oil, a preliminary research about the definition was proposed. The genesis of these high natural gamma sandstones associated with source rocks in the Chang 73 submember was discussed, along with the correlation between its development and testing effect of shale oil of the Chang 7 Member. We suggest that they are narrow and broad types can be divided in the Chang 73 submember in the Ordos Basin, and that their highly radioactive genesis maybe related to deep hydrothermal sedimentation. It is newly found that there is a close correlation between their development and testing effect of shale oil of the Chang 7 member. This study has important theoretical and practical significance for the large-scale and efficient exploration and development of shale oil in the Chang 7 Member in the Ordos Basin. |
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| Keywords: | high natural gamma sandstones associated with source rocks shale oil source rock Chang 73 submember Ordos Basin |
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