川南五峰组—龙马溪组页岩气储层特征及富气层位  

Characteristics and gas-rich layers of shale gas reservoirs of Wufeng Formation-Longmaxi Formation in southern Sichuan

作　　者：何星宇 He Xingyu(College of Earth Sciences,Chengdu University of Technology,Chengdu Sichuan 610059)

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《石化技术》2022年第11期116-118,共3页Petrochemical Industry Technology

摘　　要：我国页岩气勘探进展及产能较常规天然气产能仍存在差距,勘探新的页岩气产气区,寻找富气层位,是目前页岩气勘探开发的重要任务。研究基于川南地区龙马溪组页岩钻井的岩芯样品及测井数据,采用岩石薄片鉴定、高分辨率扫描电镜、含气性分析测等方法进行研究,研究认为:川南地区龙马溪组页岩储层以“高压、低孔低渗、富有机质”为主要特征,整体上属于浅水陆棚相,有机质含量高,矿物组分以石英、黏土矿物为主,物质来源及成因多样。结合孔隙度及含气性分析,认为川南地区五峰—龙马溪组可以作为页岩气开采优选区,龙马溪组一亚段为勘探开发的富气层位。compared with conventional natural gas production capacity,and exploring new shale gas production areas and finding gas-rich strata is an important task for shale gas exploration and development at present.Based on the core samples and logging data of the shale drilling of the Longmaxi Formation in southern Sichuan,the study was carried out by methods such as rock flake identification,high-resolution scanning electron microscopy,gas content analysis and measurement,etc.,and the study concluded that the shale reservoir of the Longmaxi Formation in southern Sichuan was characterized by“high pressure,low porosity,low permeability,and rich organic quality”,Combined with the analysis of porosity and gas content,it is believed that the Wufeng-Longmaxi Formation in southern Sichuan can be used as a preferred area for shale gas exploitation,and the sub-section of the Longmaxi Formation is a gas-rich strata for exploration and development.

关 键 词：页岩储层 富气层位 龙马溪组 川南地区 

分 类 号：P618.13[天文地球—矿床学]