全球基岩油气藏分布及成藏规律  

Global distribution and hydrocarbon accumulation pattern of basement reservoirs

作　　者：杨飞[1] 徐守余[1] 

机构地区：[1]中国石油大学(华东),山东青岛266555

出　　处：《特种油气藏》2011年第1期7-11,135,共5页Special Oil & Gas Reservoirs

基　　金："973"项目"碳酸盐岩缝洞型油藏缝洞单元形成机制及模式研究"(2011CB201001);教育部新世纪优秀人才支持计划(NCET-08-0843)

摘　　要：基岩油气藏是一种特殊类型的油气藏,主要是指储存于结晶基岩中的油气藏。基岩油气田总储量几乎相当于世界已知储量的15%。通过调研大量文献,发现基岩油气田目前主要分布于东南亚、北非、北美等地区,年代较古老,以寒武系产油为主,储集层包括花岗岩、变质岩、火成岩、风化底砾岩等。一般认为基岩油气藏油气来源于上覆烃源岩、旁侧生油系、附近已形成的油气藏,也有学者认为是无机成因。储集空间主要包括构造作用和风化作用形成的孔缝洞。随着油气勘探的不断深入,发现基岩油气藏是寻找大油气田的主要方向之一。Basement reservoir is a special type of oil and gas reservoirs,mainly refers to the oil and gas reservoirs preserved in crystalline bedrock.According to the survey,the total reserves of basement reservoirs are almost equivalent to 15% of the world's known reserves,mainly distributed in Southeast Asia,North Africa and North America,etc.The strata are old with Cambrian as the dominant productive formation.The reservoirs include granite,metamorphic rock,igneous rock,weathering basal conglomerate and so on.It is generally believed that hydrocarbon in basement reservoirs has three sources: overlying source rock,lateral generative system,and the reservoir formed nearby;there are also some scholars who believe in inorganic origin.The reservoir space involves pores,seams and holes formed by tectonic and weathering actions.As the deepening of oil and gas exploration,it is found that basement may have a great potential of discovering large reservoirs.

关 键 词：基岩油气藏 储集层 分布 圈闭类型 

分 类 号：TE122.1[石油与天然气工程—油气勘探]