四川盆地陆相富有机质层段剖面结构划分及特征  

Characteristics and classification of section structure of nonmarine organic-rich formations in Sichuan Basin

作　　者：周文[1,2] 徐浩[1,2] 邓虎成[1,2] 陈文玲[1,2] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059 [2]成都理工大学能源学院,成都610059

出　　处：《岩性油气藏》2016年第6期1-8,共8页Lithologic Reservoirs

基　　金：国家重大科技专项"海相页岩气储层评价方法研究"(编号:2016ZX05025002-005);国家高技术研究发展计划(863计划)项目"页岩气储层特征及评价技术研究"(编号:2013AA064501)联合资助

摘　　要：为了揭示四川盆地富有机质层段特征及不同类型剖面结构的产能规律,以四川盆地侏罗系自流井组大安寨段和三叠系须家河组须五段为研究对象,在野外实测剖面和钻井资料分析的基础上,结合区域沉积背景,利用泥地比、单层砂(灰)岩厚度等为标准,对陆相富有机质层段剖面结构进行了划分,并与北美Bakken组致密油气地层剖面结构和生产特征进行了对比。陆相富有机质层段可划分为致密砂(灰)岩型、富砂(灰)夹泥型、砂(灰)泥互层型、富泥夹砂(灰)型及泥页岩型等5种类型的剖面结构。富有机质层段中致密砂(灰)岩油气与页岩油气共存,其中页岩油气产出剖面主要集中于砂(灰)泥互层型、富泥夹砂(灰)型及泥页岩型剖面结构。陆相地层具有多产层特征,将富有机质页岩夹砂(灰)岩地层作为整体进行页岩油气勘探开发,应是今后陆相页岩油气地层重要的勘探开发思路。In order to reveal the characteristics of nonmarine organic-rich formations and the productivity of different types of stratigraphic structure sections, taking the Da＇anzhai member of Jurassic Ziliujing Formation and the fifth member of Triassic Xujiahe Formation in Sichuan Basin as examples, this paper divided the stratigraphic structure section by making the ratio of shale to gross and thickness of single sand （limestone） as standards based on the field observed profiles, drilling data and sedimentary settings, and compared with the structure sections of Bakken Formation in North America. The nonmarine organic-rich stratigraphic structure sections were divided into five types： tight sandstone （limestone）, sandstone-rich （limestone-rich） with shale, sandstone （limestone） and shale interbed, shale-rich with sandstone （limestone） and shale. The tight sandstone （limestone） oil and gas coexist with shale oil and gas in nonmarine organic-rich formations, and the shale oil and gas are mainly produced in the last three types of structure sections. There are multiple productive targets in nonmarine organic-rich formations, so, it is proposed that the formation of organic-rich shale interbedded with limestone or sandstone should be considered to explore as a whole.

关 键 词：剖面结构 陆相富有机质层段 页岩气 致密油气 四川盆地 

分 类 号：TE132.2[石油与天然气工程—油气勘探]