西安石油大学学报（自然科学版）2012，Vol.27Issue(2)：36-40,45,6.
Maranon盆地油气地质特征及勘探潜力
摘要
Abstract
The evolution and petroleum geological features in the Maranon Basin are analyzed in detail based on the geological and geophysical data,combined with the results of previous studies. The study result shows that;Maranon Basin is a multi-cycle sub-Andean foreland basin. It went through four evolution phases ;cratonic period (Palaeozoic) .extensional faulting period (Triassic -Jurassic) (depressing period (Cretaceous) and foreland period (post late Cretaceous). Vertical deposition can be divided into three megasequences: pre-Cretaceous sequence,Cretaceous sequence and post-Cretaceous sequence. Two sets of major source rocks,Cretaceous Chonta/Napo and Triassic -Jurassic Pucara Formations, and multiple sets of reservoir-cap assemblages are developed in the basin. There are three modes of hydrocarbon migration: vertical migration,lateral migration and step migration. Multitude types of structural traps are developed, including compression faulted and anticline traps in the western basin,anticline and drape anticline traps in the central basin,and faulted and traction anticline traps in the eastern basin. Different types of traps are distributed as strip belts along the NW - SE direction. It maybe developed lithologic trap and stratigraphic trap. There are three potential exploration targets in the basin; structural-strati-graphic trap and lithologic trap in foreland depression belts,structural trap of Paleogene in anticline thrust belts and stratigraphic trap and lithologic trap in the eastern slope zone.关键词
Maranon盆地/前陆盆地/石油地质特征/构造圈闭/勘探潜力Key words
Maranon Basin/ foreland basin/ petroleum geological characteristic/ structural trap/ exploration potential分类
能源科技引用本文复制引用
秦雁群,温志新,侯秀林,李潇,苗小龙..Maranon盆地油气地质特征及勘探潜力[J].西安石油大学学报（自然科学版）,2012,27(2):36-40,45,6.基金项目
中石油重大科技专项(编号:2008zx05028-003) （编号:2008zx05028-003）
