| 沉积微相控制下储层分类评价及预测 |
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| 引用本文： | 张祥龙,刘一仓,张攀,王贵文,李栋,马源,江程舟,包萌,陈康军,刘秉昌,解宇强.沉积微相控制下储层分类评价及预测[J].沉积学报,2022,40(2):534-546. |
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| 作者姓名： | 张祥龙 刘一仓 张攀 王贵文 李栋 马源 江程舟 包萌 陈康军 刘秉昌 解宇强 |
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| 作者单位： | 1.中国石油大学(北京)地球科学学院, 北京 102249 |
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| 基金项目： | 国家自然科学基金（41872133）； |
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| 摘 要： | 鄂尔多斯盆地环西—彭阳南段地区长8段沉积以辫状河三角洲平原为主，其储层品质明显受沉积微相控制。基于岩芯观察、薄片观察、压汞及常规测井等资料分析，将研究区长8段划分为5个小层，并对其辫状河三角洲平原沉积储层特征进行了精细研究。结果表明，研究区主要发育分流河道、越岸、分流间湾三种微相，其中分流河道构成了主要的砂体骨架，呈南西—北东向分布。分流河道砂体物性最好，越岸沉积物性次之，分流间湾物性最差。与之相对应，研究区储层可划分为I、II、III、IV四种类型，其中储层质量最好的I型主要位于河道中部，质量最差的IV型对应分流间湾。试油资料也进一步证实沉积微相控制研究区储层质量的差异，基于沉积微相的平面展布可实现储层平面分布规律预测。研究成果可为后续沉积储层精细评价乃至油气勘探开发综合研究奠定基础。
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| 关 键 词： | 辫状河三角洲平原 沉积微相 长8段 储层分类评价 |
| 收稿时间： | 2020-06-10 |
Reservoir Classification Evaluation and Prediction in Terms of Sedimentary Microfacies: A case study from Chang 8 section in Huanxi-Pengyang south section,Ordos Basin |
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| ZHANG XiangLong,LIU YiCang,ZHANG Pan,WANG GuiWen,LI Dong,MA Yuan,JIANG ChengZhou,BAO Meng,CHEN KangJun,LIU BingChang,XIE YuQiang.Reservoir Classification Evaluation and Prediction in Terms of Sedimentary Microfacies: A case study from Chang 8 section in Huanxi-Pengyang south section,Ordos Basin[J].Acta Sedimentologica Sinica,2022,40(2):534-546. |
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| Authors: | ZHANG XiangLong LIU YiCang ZHANG Pan WANG GuiWen LI Dong MA Yuan JIANG ChengZhou BAO Meng CHEN KangJun LIU BingChang XIE YuQiang |
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| Institution: | 1.College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China2.The 11th Oil Production Plant of Changqing Oilfield Company, CNPC, Qingyang, Gansu 745000, China3.State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China |
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| Abstract: | The sedimentary strata of Chang-8 section in Huanxi-Pengyang south section of Ordos Basin are dominated by braided river delta plain and their reservoir quality is obviously controlled by sedimentary microfacies. Based on core observation， slice observation， mercury injection and conventional logging data analysis， the chang-8 section in the study area was divided into 5 small layers， and the sedimentary reservoir characteristics of the braided river delta plain were studied in detail. The results show that there are three microfacies in the study area: distributary channel， overbank deposit and interdistributary bay. Distributary channel constitutes the main sand body framework， which is distributed from south west to north east. The distributary channel sand body has the best physical property， the overbank deposit property is second， and the interdistributary bay has the worst physical property. Correspondingly， the reservoirs in the study area can be divided into four types: I， II， III and IV. The type I with the best reservoir quality is mainly located in the middle of the channel， while the type IV with the worst reservoir quality corresponds to the interdistributary bay. The oil test data also further confirmed the difference of reservoir quality in the study area of sedimentary microfacies control. Plane distribution based on sedimentary microfacies can be used to predict the plane distribution of reservoir. The research results can lay a foundation for the follow-up fine evaluation of sedimentary reservoirs and even the comprehensive study of oil and gas exploration and development. |
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