南美亚诺斯盆地油气成藏条件与成藏模式

doi:10.11885/j.issn.1674-5086.2014.06.15.01

摘要/Abstract

摘要：

南美亚诺斯盆地是南美甚至世界范围内重要的富油气盆地，通过对亚诺斯盆地油气成藏条件的分析，并结合
盆地内构造演化、沉积作用影响，揭示了亚诺斯盆地内油气成藏特征，建立了油气成藏模式。亚诺斯盆地经历了古生
代被动大陆边缘、中生代弧后裂谷、新生代前陆盆地3 个构造演化期，发育多套烃源岩及储盖组合，圈闭类型多样，油
气分布复杂，具有良好的勘探开发前景。盆地油气成藏具有远距运移，混源充注，断砂立体，持续输导，阶梯式捕集成
藏的特点；主力产层渐新统卡沃内拉组表现为近灶优先捕集形成中深层大中型构造油气田，远灶接替捕集形成浅层小
型复合型油气田的油气分布规律。取得的认识对亚诺斯盆地进一步的油气发现具有重要的借鉴意义。

关键词: 亚诺斯盆地, 烃源岩, 储层, 盖层, 圈闭

Abstract:

Llanos Basin is an important oil and gas rich basin in south America and even in the world which is located in the
north of south American plate. Based on analysis of the Llanos Basin hydrocarbon accumulation，with condition，consideration
of the tectonic evolution and sedimentation impact，the article reveals the hydrocarbon accumulation characteristics of Llanos
Basin and establishes hydrocarbon accumulation mode. Llanos Basin has experienced three tectonic evolution stages of Paleozoic
passive continental margin，Mesozoic back arc rift and Cenozoic foreland basins. There have developed multiple sets of
hydrocarbon source rocks and reservoir cap combinations，various types of traps and complicated oil and gas distribution in the
basin，and have good prospects for exploration and development. The hydrocarbon accumulation of the basin is characteristics
of remote migration，mixed-source charging，broken sand-dimensional，continuous transporting and stepped-trapping accumulation；
the oil and gas distribution of main production layer of Oligocene Carbonera Formation is characterized by large and
medium-sized deep oil and gas fields formed by preferred trap of near hydrocarbon source rocks，and shallow-small-composite
oil and gas fields formed by trap of far hydrocarbon source rocks. This knowledge obtained has important reference significance
in further oil and gas discoveries of Llanos Basin.

Key words: Llanos Basin, source rocks, reservoir, cap rock, traps

徐国盛1，刘文俊1，许升辉2，钱劲1，余箐1. 南美亚诺斯盆地油气成藏条件与成藏模式[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2014.06.15.01.

Xu Guosheng1, Liu Wenjun1, Xu Shenghui2, Qian Jin1, Yu Qing1. Oil and Gas Accumulation Conditions and Accumulation Mode in
Llanos Basin，South America[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2014.06.15.01.

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