长宁页岩气田宁211井五峰组—龙马溪组生物地层  

BIOSTRATIGRAPHY OF THE WUFENG TO LONGMAXI FORMATION AT WELL NING 211 OF CHANGNING SHALE GAS FIELD

作　　者：罗超[1,2] 王兰生 石学文[1,2] 张鉴[1,2] 吴伟[1,2] 赵圣贤[1,2] 张成林[1,2] 杨亚茜 

机构地区：[1]中国石油西南油气田公司勘探开发研究院,四川成都610051 [2]页岩气评价与开采四川省重点实验室,四川成都610051 [3]中国石油西南油气田公司页岩气勘探开发部,四川成都610056 [4]中国石油西南油气田公司华油公司,四川成都610017

出　　处：《地层学杂志》2017年第2期142-152,共11页Journal of Stratigraphy

基　　金：国家自然科学基金青年科学基金项目(No.41502150);四川省科技支撑计划项目"四川盆地下古生界页岩气资源潜力评价及选区"(2015SZ0001)

摘　　要：长宁页岩气田是中国页岩气勘探和开发最早的页岩气田之一。对长宁页岩气田宁211井钻井剖面的五峰组—龙马溪组黑色页岩开展了岩石地层及生物地层研究,建立了从上奥陶统凯迪阶上部的Dicellograptus complexus带(WF2带)至志留系兰多维列统埃隆阶顶部的Stimulograptus sedgwickii带(LM8带)的12个连续生物带和组合,这一生物地层序列可实现区域和全球的精确对比。通过岩石地层和和生物地层的对比,发现各岩石地层与生物带具有极强的耦合关系,宁211井主要目的层五峰组—龙马溪组龙一1亚段大致对应Dicellograptus complexus带(WF2带)-Coronograptus cyphus带(LM5带)。长宁页岩气田与长宁背斜及其周缘具有相同的沉积环境。The Changning shale gas field is one of the earliest exploration and development shale gas fields in China. Recently we carried out a detailed stratigraphic investigation of black shales of the Wufeng to Longmaxi formations at Well Ning 211 section in the Changning shale gas field. We recognized the 12 con- secutive biozones ranging from the Dicellograptus complexus Zone of the Katian Stage （Upper Ordovician） to the Stimulograptus sedgwickii Zone of the Aeronian Stage （Llandovery, Silurian）. This biostratigraph- ic sequence can be correlated regionally and globally, By contrasting lithostratigraphy and biostratigraphy, the relationship between biozones and depositional facies is established. For instance, the Wufeng Forma- tion to the 1~＇t submember of 1s＇ member of the Longmaxi Formation at Well Ning 211, which is the main shale gas target zone, correspond roughly to the Dicellograptus complexus Zone （WF2 Zone） to the Coro- nograptus cyphus Zone（LM5 Zone）.

关 键 词：生物地层 黑色页岩 五峰组 龙马溪组 奥陶系 志留系 宁211井 长宁 四川 

分 类 号：P534.42[天文地球—古生物学与地层学] P534.43[天文地球—地质学]