石油勘探与开发2018，Vol.45Issue(2)：179-189,11.DOI:10.11698/PED.2018.02.01
四川盆地中部前震旦系裂谷及对上覆地层成藏的控制
The pre-Sinian rift in central Sichuan Basin and its control on hydrocarbon accumulation in the overlying strata
摘要
Abstract
Based on the latest seismic data,resistivity profile,outcrop evidence and logging data,the structural features of basement in Sichuan Basin and its control on the hydrocarbon accumulation in the Sinian-Cambrian strata was discussed.It was found that a NE striking pre-Sinian rift was developed across the whole basin.Controlled by a series of rift-parallel normal faults,horst-graben structures were developed inside the rift,large horst-graben structures and later activity of their boundary faults controlled the distribution of beach facies of the overlying strata.The horst-graben structures induced the formation of local highs of ancient landform and controlled the successive development of overlapped bioherm beach facies in long-term marine setting from the Sinian period to the Permian period,and as a result a widely distributed favorable sedimentary facies belt was developed.The pre-Sinian rift and later activities of related normal faults controlled the development of the grain beach and karst reservoirs and the deposition of high quality source rock,which form structural-lithologic traps.Through comprehensive evaluation,two large structural-lithologic composite trap favorable exploration areas in the south and north of the Gaoshiti-Moxi area,were selected.关键词
四川盆地/前震旦系/裂谷/垒-堑结构/震旦系—寒武系/成藏模式/构造-岩性圈闭Key words
Sichuan Basin/pre-Sinian/rift/horst-graben structure/Sinian-Cambrian/hydrocarbon accumulation model/structural-lithologic trap分类
能源科技引用本文复制引用
魏国齐,杨威,张健,谢武仁,曾富英,苏楠,金惠..四川盆地中部前震旦系裂谷及对上覆地层成藏的控制[J].石油勘探与开发,2018,45(2):179-189,11.基金项目
国家科技重大专项“大气田富集规律与勘探关键技术”(2016ZX05007) （2016ZX05007）
