【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。更多还原

【Abstract】 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.更多还原