摘要
以渝南地区龙马溪组下部富有机质页岩为研究对象,对岩相类型进行划分,对不同岩相下的储层品质进行系统分析。研究发现:渝南地区龙马溪组下部龙一1亚段发育9种页岩岩相,其中主要页岩岩相有4种,分别为混合硅质页岩、含粘土硅质页岩、含硅粘土质页岩和粘土质/硅质页岩;不同页岩岩相具有不同的储层特征,其中含粘土硅质页岩为最优势页岩岩相,集聚了高总有机碳含量(TOC)、高孔隙度、高含气性和高脆性等特征,其他三者为次优势页岩岩相。
Taking the organic rich shale in the lower part of Longmaxi formation in southern Chongqing as the research object, the lithofacies types are classified and the reservoir quality under different lithofacies is systematically analyzed. It is found that there exists 9 kinds of shale lithofacies in the lower part of Longmaxi formation Longyi 1 sub-section of southern Chongqing, including 4 kinds of main shale lithofacies, namely, mixed siliceous shale, clayey siliceous shale, siliceous clayey shale and clayey/siliceous shale;different shale lithofacies have different reservoir characteristics, among which clayey siliceous shale is the most dominant shale lithofacies combined with characteristics including high TOC, high porosity, high gas content and high brittleness, while the other three are sub-dominant shale lithofacies.
作者
曹地
陈雷
蔡家兰
王欣
CAO Di;CHEN Lei;CAI Jia-lan;WANG Xin(School of Geoscience and Technology,Southwest Petroleum University,Chengdu 610500,China;Chongqing Gas Field,PetroChina Southwest Oil Gas Field Company,Chongqing 400021,China)
出处
《工业技术创新》
2020年第3期83-90,共8页
Industrial Technology Innovation
基金
海相页岩纹层多样性及其对页岩储层品质的影响(41602147)
