贵州大方地区龙潭组沉积相类型及其特征  

Types and characteristics research of sedimentary facies for Longtan formation in Dafang area,Guizhou province

作　　者：赵利[1] 赵聪[1] 罗海金 姚华龙 鲁霞[1] ZHAO Li;ZHAO Cong;LUO Haijin;YAO Hualong;LU Xia(Sichuan Institute of Nuclear Geology,Chengdu Sichuan 610052,China)

机构地区：[1]四川省核工业地质调查院,四川成都610052

出　　处：《石油化工应用》2019年第4期103-105,117,共4页Petrochemical Industry Application

基　　金：中国地质调查局地质调查项目"贵州大方地区1:5万页岩气地质调查";项目编号:12120115100901;四川省科技计划项目"富有机质页岩孔隙特征对页岩气吸附能力的影响分析";项目编号:2017JY0119

摘　　要：贵州大方地区龙潭组发育一套暗色富有机质泥页岩,反映浅水还原沉积环境。结合研究区龙潭组沉积相标志的识别和研究,基本查明了研究区龙潭组的沉积环境为海陆过渡-三角洲沉积体系,发育完整的三角洲平原、三角洲前缘和前三角洲亚相。龙潭组富有机质泥页岩的沉积环境及特征表明其具有生油(气)的潜力,可以作为下一步油气勘探的潜在目标层。Longtan formation in Dafang area of Guizhou developed a set of dark organic shale, reflecting shallow water reductive sedimentary environment. Combined with the identification and study of sedimentary facies of Longtan formation in the study area, it is found that the sedimentary environment of Longtan formation in the study area is sea-land transition-delta sedimentary system, and a complete delta plain, delta front and pre-delta subfacies are developed. The sedimentary environment and characteristics of organic shale in Longtan formation indicate that it has the potential of generating oil(gas) and can be used as a potential target layer for future oil and gas exploration.

关 键 词：大方地区 龙潭组 泥页岩 沉积环境 三角洲相 

分 类 号：TE121.34[石油与天然气工程—油气勘探]