| 蜀南地区嘉陵江组颗粒滩储层发育机理 |
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| 引用本文： | 黎霆,李平平,诸丹诚,杨明磊,李海平,李涛,邹华耀.蜀南地区嘉陵江组颗粒滩储层发育机理[J].沉积学报,2021,39(2):470-481. |
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| 作者姓名： | 黎霆 李平平 诸丹诚 杨明磊 李海平 李涛 邹华耀 |
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| 作者单位： | 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： | 国家科技重大专项(2017ZX05005-003-003);中国科学院战略性先导科技专项(XDA14010306)。 |
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| 摘 要： | 颗粒滩储层是嘉陵江组一种重要的储层类型，具有良好的天然气勘探开发潜力。通过岩芯观察、薄片鉴定、阴极发光、扫描电镜和物性分析等方法，对蜀南地区嘉陵江组颗粒滩储层岩石学特征、储集空间类型、孔渗特征和成岩作用类型展开了系统的研究，在研究基础之上进一步分析了嘉陵江组颗粒滩储层形成的主控因素。结果表明，嘉陵江组颗粒滩储层主要的岩石类型为颗粒灰岩、颗粒白云岩和残余颗粒结构粉晶白云岩，主要的储集空间类型为粒间溶孔、粒内溶孔、晶间孔和晶间溶孔。颗粒滩是储层发育的物质基础，其发育受到了层序和沉积古地貌的控制，垂向上主要发育在高位体系域的中下部，平面上主要分布在泸州水下古隆起之上。成岩作用是颗粒滩能否进一步演化为储层的关键，颗粒滩储层主要的破坏性成岩作用有压实、压溶和胶结作用，主要的建设性成岩作用有溶蚀和白云岩化作用，构造运动产生的裂缝则进一步提高了储层的储集性能。
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| 关 键 词： | 嘉陵江组 颗粒滩储层 主控因素 成岩作用 |
| 收稿时间： | 2019-10-22 |
Mechanism of Shoal Reservoir in the Jialingjiang Formation,Southern Sichuan Basin |
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| LI Ting,LI PingPing,ZHU DanCheng,YANG MingLei,LI HaiPing,LI Tao,ZOU HuaYao.Mechanism of Shoal Reservoir in the Jialingjiang Formation,Southern Sichuan Basin[J].Acta Sedimentologica Sinica,2021,39(2):470-481. |
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| Authors: | LI Ting LI PingPing ZHU DanCheng YANG MingLei LI HaiPing LI Tao ZOU HuaYao |
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| Institution: | College of Geosciences, China University of Petroleum (Beijing), Beijing 102249, China |
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| Abstract: | The shoal reservoir in the Jialingjiang Formation is a potential site for natural gas exploration.Drill core observations,thin section identification,cathode luminescence,scanning electron microscopy and physical property analysis were employed in this study to analyze the petrological characteristics,pore types,diagenesis and pore permeability relationships of the reservoir.The main factors controlling the development of the reservoir were also analyzed.The results indicate that the shoal reservoir occurs vertically in T1j1-T1j12,T1j22,T1j14and T1j15,and comprises several rock types.These include grainy limestone,grainy dolostone and powder-size dolomite crystals which retain the original structure.The main types of reservoir space are inter-and intragranular dissolved pores,intercrystalline pores and intercrystalline dissolution pores.The material basis of the shoal reservoir was controlled by its sequential and sedimentary paleotopography,being mainly developed vertically in the middle and lower parts of a highstand system tract,and horizontally on the Luzhou paleo-uplift.The diagenetic history of the shoals is the key to their evolution into a hydrocarbon reservoir.The main destructive diagenesis was compaction,pressure dissolution and cementation;the main constructive diagenesis was dissolution and dolomitization.Fractures generated by tectonic movement further improve the physical properties of the reservoir. |
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| Keywords: | Jialingjiang Formation shoal reservoir main controlling factors diagenesis |
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