通南巴地区上二叠统—下三叠统层序地层划分  

THE UPPER PERMIAN-LOWER TRIASSIC STRATA SEQUENCE CLASSIFICATION IN TONGNANBA AREA, SICHUAN BASIN

作　　者：何莹[1] 黎平[1] 杨宇[1] 吴亚军[1] 唐谢[2] 

机构地区：[1]中国石化西南分公司勘探开发研究院 [2]"油气藏地质及开发工程"国家重点实验室.西南石油大学

出　　处：《天然气工业》2007年第6期22-26,148,共5页Natural Gas Industry

基　　金：中国石化西南分公司开发先导项目"川东北地区通南巴构造带气藏描述"(编号:06KJ-22)的部分研究成果。

摘　　要：运用海相碳酸盐岩层序地层学及沉积学原理,结合野外露头层序调查和覆盖区钻井、测井及地震等资料的分析,根据层序界面组成、特征、识别标志及形成机理等因素,将四川盆地通南巴地区的上二叠统—下三叠统地层划分为8个Ⅲ级层序、2个Ⅱ级层序。在建立等时地层格架的基础上,对该区上二叠统—下三叠统台盆的沉积充填结构和有利储层发育层位进行了刻划,还指出了本区下一步天然气勘探部署的有利方向为马路背—黑池梁地区的T1f1—P2ch、T1f3、T1j2储层及元坝地区的T1f1—P2ch、T1f3、T1j2储层。By use of sedimentology and sequence stratigraphy on marine carbonatite, combined with strata sequence study on the field outcrops and analysis on data from drilling, seismic logging and testing within an area of coverage, the Upper Permian-Lower Triassic formations in Tongnanba area of the Sichuan Basin could be classified by 8 third-order and 2 second-order strata sequences, in light of many factors of sequence contact bed like the formation, features, identification marks and confirmation mechanism. Based on building up isochronal strata framework, this paper describes deposition fill configuration and strata sequence of well-developed reservoirs in the Upper Permian-Lower Triassic platform of this area. Furthermore, it also points out those advantageous exploration areas for the next step should be T1f1-P2ch, T1f3, and T1j2 in Malubei-Heichiliang zone, and T1f1-P2ch, T1f3, and T1f2 in Yuanba zone.

关 键 词：四川盆地 通南巴地区 晚二叠世 早三叠世 地层 层序划分 层序格架 储集层 勘探区 

分 类 号：P618.13[天文地球—矿床学]