| 四川盆地侏罗系大安寨段湖相页岩油气基本特征及勘探方向 |
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| 引用本文： | 张宇,杜垚,刘耘,李文皓,何硕,王兴志,庞谦,黄东.四川盆地侏罗系大安寨段湖相页岩油气基本特征及勘探方向[J].中国地质,2022,49(1):51-65. |
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| 作者姓名： | 张宇 杜垚 刘耘 李文皓 何硕 王兴志 庞谦 黄东 |
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| 作者单位： | 1. 中国石油西南油气田公司勘探事业部;2. 中国石油西南油气田公司勘探开发研究院;3. 中国石油川庆钻探地质勘探开发研究院;4. 油气藏地质及开发工程国家重点实验室西南石油大学 |
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| 基金项目： | 国家科技重大专项“四川盆地致密油资源潜力、甜点区预测与关键技术应用”（2016ZX05046006-008）资助~~； |
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| 摘 要： | 研究目的]证实四川盆地中部地区大安寨段具备良好的页岩油气勘探潜力.研究方法]本文通过岩心、薄片、扫描电镜、全岩X射线衍射、有机地球化学、三轴应力实验、核磁共振测试等方法分析了大一三亚段页岩油气形成条件及富集因素.研究结果]结果表明:大一三亚段泥页岩具湖相混合层系、分布广、厚度大、储集空间类型多、物性条件较好、生烃...
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| 关 键 词： | 页岩油气 大安寨段 湖相混合沉积 富集因素 有利勘探区 油气勘查工程 四川盆地 |
| 收稿时间： | 2020/3/27 0:00:00 |
| 修稿时间： | 2020/7/30 0:00:00 |
Basic characteristics and exploration direction of lacustrine shale oil and gas in Da'anzhai member of Jurassic in Sichuan Basin |
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| ZHANG Yu,DU Yao,LIU Yun,LI Wenhao,HE Shuo,WANG Xingzhi,PANG Qian,HUANG Dong.Basic characteristics and exploration direction of lacustrine shale oil and gas in Da'anzhai member of Jurassic in Sichuan Basin[J].Chinese Geology,2022,49(1):51-65. |
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| Authors: | ZHANG Yu DU Yao LIU Yun LI Wenhao HE Shuo WANG Xingzhi PANG Qian HUANG Dong |
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| Institution: | Exploration Division of PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, Sichuan, China;Exploration and Development Research Institute, PetroChina Southwest Oil & Gasfield Company, Chengdu 610041, Sichuan, China;Research Institute of Geologic Exploration and Development, Chuanqing Drilling & Exploration Corporation, CNPC, Chengdu 610051, Sichuan, China;State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China |
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| Abstract: | This paper is the result of oil and gas exploration engineering.Objective]In order to confirm that the Da''anzhai member in the central part of Sichuan Basin has great shale oil and gas exploration potential. Methods]This paper analyzes the formation conditions and enrichment factors of the shale oil and gas of Da 1,3 sub-member by cores, thin section, scanning electron microscope, whole rock X-ray diffraction, organic geochemistry, triaxial stress test, nuclear magnetic resonance test and other methods. Results]The results show that the shale in Da 1,3 sub-member has the characteristics of mixed lacustrine system, wide distribution, large thickness, multiple types of reservoir space, better physical conditions, high hydrocarbon generation potential, high higher Youngs modulus, low Poissons ratio and high content of brittle minerals, which is conducive to the enrichment and fracturing transformation of shale oil and gas. On this basis, comprehensive analysis shows that the superposition of high TOC and type II organic matter is the basis of shale oil and gas enrichment; favorable mixed sedimentary system is the key to shale oil and gas enrichment; (micro) fractures control shale oil and gas high-production. Conclusions]Combine the above understanding, Longgang block and the Xichong-Lianchi block are selected as one of the favorable exploration areas for Lake shale oil and gas in Da''anzhai section of Sichuan Basin, which will provide guidance for the further exploration and development of shale oil and gas in the central Sichuan area.Highlights: It is put forward that the mixed layer system of shale with thin shell limestone has the best exploration and development value;The evaluation standard of shale oil and gas in Sichuan Basin is established. |
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| Keywords: | shale oil and gas Da''anzhai Member lacustrine mixed deposition enrichment factor favorable exploration area oil-gas exploratin engineering Sichuan Basin |
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