| 四川盆地须家河组二段储集体非均质性特征及其成因 |
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| 引用本文： | 徐安娜,汪泽成,赵文智,卞从胜,徐兆辉,崔瑛,武松涛.四川盆地须家河组二段储集体非均质性特征及其成因[J].天然气工业,2011,31(11):53-58. |
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| 作者姓名： | 徐安娜 汪泽成 赵文智 卞从胜 徐兆辉 崔瑛 武松涛 |
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| 作者单位： | 1.中国石油勘探开发研究院；2.中国石油勘探与生产分公司 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)课题(编号:2007CB209502) |
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| 摘 要： | 四川盆地上三叠统须家河组二段砂岩非均质性较强，为分析其特征和成因，基于前人在构造演化、沉积背景及其演化和成岩作用等方面的研究成果，利用须二段野外露头120个砂砾岩样品、井下160个岩屑样品和150个岩心样品，开展了岩石粒度、成分和重矿物分析及铸体薄片、扫描电镜、压汞和核磁共振等储层实验室综合分析。结论认为：该砂岩储集体非均质性较强，表现为岩石组构的非均质性明显，层内和层间渗透率变异系数高，中高孔渗砂体侧向连通程度低以及渗透率分布在河道部位的方向性等；特定构造和沉积背景以及水道多期迁移为须二段储层非均质性的形成奠定了地质条件，河道粗粒砂岩、绿泥石衬边和碱性长石等经历的建设性成岩作用是储集体非均质性形成的关键要素。
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| 关 键 词： | 四川盆地 晚三叠世 低孔隙度低渗透率 储集体 非均质性 成因 建设性成岩作用 构造 |
Features and genesis of reservoir heterogeneity in the second member of the Upper Triassic Xujiahe Fm,Sichuan Basin |
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| Xu Anna,Wang Zecheng,Zhao Wenzhi ,Bian Congsheng,Xu Zhaohui ,Cui Yin,Wu Songtao.Features and genesis of reservoir heterogeneity in the second member of the Upper Triassic Xujiahe Fm,Sichuan Basin[J].Natural Gas Industry,2011,31(11):53-58. |
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| Authors: | Xu Anna Wang Zecheng Zhao Wenzhi Bian Congsheng Xu Zhaohui Cui Yin Wu Songtao |
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| Affiliation: | 1.Petroleum Exploration and Development Research Institute, PetroChina, Beijing 100083, China; 2.PetroChina Exploration and Production Co., Ltd., Beijing 100011, China |
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| Abstract: | Sandstones in the second member of the Upper Triassic Xujiahe Fm in the Sichuan Basin are strong in heterogeneity.In order to understand the features and genesis of their heterogeneity,we reviewed the previous studies on structural evolution,sedimentary settings and evolution as well as diagenesis,and performed an analysis of rock grain sizes,composition,and heavy minerals,and laboratory data such as cast thin section,scanning electric microscope,mercury injection and NMR by use of 120outcrop samples,160roc... |
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| Keywords: | Sichuan Basin Later Triassic low porosity and permeability reservoir heterogeneity genesis analysis constructive diagenesis structure |
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