摘要
雅诺斯盆地是哥伦比亚最重要的产油盆地,也是世界著名的含油气盆地。盆地经历了古生代裂谷发育期、中生代弧后裂谷和拗陷发育期、古近纪前陆盆地发育期以及新近纪挤压活动发育期4个阶段。受构造、沉积演化控制,盆地具有独特的油气地质特征,发育有3套含油气系统。平面上油气主要分布于盆地西部沉积中心雅诺斯逆掩前缘带附近;垂向上油气主要储集于白垩系Guadalupe组和古近系Mirador组。通过油气地质综合研究,认为盆地西部雅诺斯逆掩前缘带和盆地北部地堑虽然勘探程度较高,仍具有较好的勘探前景;盆地中部雅诺斯坳陷可能存在重油勘探机会。
The Llanos basin is one of the most important oil-producing basins in Colombia and is also a very famous petroliferous basin in the world. The basin underwent 4 development stage such as Paleozoic lifting, Mesozoic back-arc rifting and depression, and Paleogene foreland development and Neogene compression stages. Controlled by structural-sedimentary evolution this basin has a special petroleum geological feature where three sets of petroleum system were found out during the past 60 years in the basin. Oil and gas resources are distributed along the Llanos overthrust belt in the west of the basin. The Guadalupe and Mirador Formations are the most important reservoirs. A comprehensive research on petroleum geological characteristics indicate that the Llanos overthrust belt and graben area in the north of the basin show the best exploration potential, while the Llanos Depression in the middle of the basin may has heavy oil exploration opportunities.
出处
《四川地质学报》
2016年第3期394-397,共4页
Acta Geologica Sichuan
关键词
油气
成藏条件
勘探方向
雅诺斯盆地
petroleum geology
accumulation conditions
prospecting direction
Llanos basin
