川东南地区下三叠统飞仙关组沉积相与地震相分析  

Sedimentary Fades and Seismic Fades of Lower Triassic Feixianguan Formation in Fuling Area

作　　者：章婷[1] 王长城[2] 李强[3] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]成都理工大学能源学院,油气藏地质及开发工程国家重点实验室(成都理工大学),四川成都610059 [3]中石油大港油田分公司工程技术处,天津300280

出　　处：《长江大学学报（自科版）（上旬）》2012年第12期37-40,4-5,共4页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

摘　　要：以威尔逊提出的碳酸岩沉积相综合模式为理论,结合四川盆地飞仙关组岩性组合、沉积构造、生物发育等特征,将涪陵区块下三叠统飞仙关组划分为2个相、4个亚相和10个微相。依据区域地质资料及局部地震异常的反射特征,对涪陵区块三叠系下统飞仙关组飞一段至飞三段主要划分了前积、地层超覆尖灭、低频强振幅等局部地震异常。通过单井划分、沉积相对比、地震相分析及地震相图的勾绘,为沉积相图的编制、综合评价以及有利目标区的确定提供依据。Carbonatite sedimentary phase integrated model proposed by Wilson is used as the theory,combined with characteristics of lithologic association,sedimentary structure,biological development of Feixianguan Formation in Sichuan Basin,lower Triassic Feixianguan Formation in Fuling Area is divided into two sedimentary facies.four subphase and ten micro facies.Based on regional geological data and local seismic abnormal reflection characteristics,the first to third member of lower Triassic Feixianguan Formation in Fuling area is mainly divided into local seismic anomaly such as foreset,stratigraphic overlapping wedging-out.low frequency and high amplitude Through the well partition,comparison of sedimentary facies.seismic facies analysis and drawing of seismic facies map.it provides evidence for compilation of sedimentary facies map.comprehensive evaluation and determination of favorable target.

关 键 词：飞仙关组 沉积相 地震相 地震异常 

分 类 号：P618.13[天文地球—矿床学]