摘要
为充分了解渝西区块深层页岩的非均质性特征,本文研究以五峰组—龙马溪组为例,首先从岩相非均质性和储层宏观参数非均质性角度出发,开展渝西区块深层页岩宏观非均质性特征分析,从纹层非均质性、矿物组成非均质性、孔隙非均质性等角度出发,开展渝西区块深层页岩微观非均质性特征分析,最后开展储集层参数对比分析工作。研究表明:渝西区块五峰组—龙马溪组从纵向上,随着层位自上而下,五峰组—龙一11小层储层品质最佳,对渝西区块五峰组—龙马溪组进行横向分析发现,对于储层参数而言,其与构造类型之间的关系相对较小,其主要与构造所处的位置有关;对于该区块深层页岩而言,脆性矿物的含量高于周边其他区块,深层页岩的含气量相对较高。本研究可以为充分了解渝西区块深层页岩非均质性特征以及推动深层页岩气的开发奠定基础。
To gain a comprehensive understanding of the heterogeneity characteristics of deep shale in the Yuxi Block,this study uses the Wufeng Longmaxi Formation as a case study.Initially,the macroscopic heterogeneity characteristics of deep shale in the Yuxi Block were analyzed focusing on lithological variations and reservoir macroscopic parameters.Subsequently,the microscopic heterogeneity characteristics of deep shale in the Yuxi Block were examined from the perspectives of bedding heterogeneity,mineral composition diversity,porosity discrepancies,and so forth.Lastly,a comparative analysis of reservoir parameters will be conducted to establish a basis for advancing the development of deep shale gas in the Yuxi Block.Research indicates that along the longitudinal axis from the Wufeng Formation to the Longmaxi Formation in the Yuxi Block,the Wufeng Formation-Long111 small layer exhibits the highest reservoir quality from top to bottom.Regarding the horizontal analysis of the Wufeng Formation to the Longmaxi Formation in the Yuxi Block,the correlation between reservoir parameters and tectonic type is relatively minor and primarily hinges on the structural location.In the Yuxi Block,the deep shale features a higher concentration of brittle minerals compared to neighboring blocks,leading to a relatively elevated gas content in the deep shale.The objective of this study is to comprehensively grasp the heterogeneity characteristics of deep shale in the Yuxi Block and facilitate the advancement of deep shale gas development.
作者
罗彤彤
蒋琳
陈维铭
LUO Tongtong;JIANG Lin;CHEN Weiming(Geological Exploration and Development Research Institute of CNPC Chuanqing Drilling Engineering Co.,Ltd.,Chengdu 610056,Sichuan,China;Dongfang Geophysical Exploration Co.,Ltd.of CNPC,Zhuozhou 072751,Hebei,China;Chongqing Shale Gas Exploration and Development Co.,Ltd.,Chongqing North New Area 401121,Chongqing,China)
出处
《矿产勘查》
2024年第4期518-525,共8页
Mineral Exploration
基金
重庆页岩气公司科研项目“不同来源石英对页岩储层物性和含气性的控制作用研究”(CYS-FW-2019-0099)资助。
