欧加登盆地Karroo群烃源岩特征及资源潜力  

Source Rock Characteristics and Resource Potential of Karroo Group in Ogaden Basin

作　　者：王艳[1] WANG Yan(Research Institute of Exploration and Development,Liaohe Oilfield Company,PetroChina,Panjin 124010,Liaoning,China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院

出　　处：《承德石油高等专科学校学报》2019年第4期5-9,35,共6页Journal of Chengde Petroleum College

摘　　要：为明确埃塞俄比亚欧加登盆地油气资源潜力,开展了盆地资源评价工作。在盆地基本石油地质条件研究基础上,明确主力生油层、烃源岩特征;开展盆地模拟工作,分析烃源岩生排烃特征,指出有利油气聚集带;应用油气运聚系数类比法对油气资源进行定量评价。研究表明:下侏罗统Bokh组发育深灰色、黑灰色泥岩,有机质含量高,是盆地的主力烃源岩;烃源岩有机质类型以ⅡA型为主,演化程度高,以生干气、凝析气、凝析油为主;预测盆地石油资源量为60×10^8t,天然气资源量为4.5×10^12m^3;盆地可划分为4个油气聚集单元,其中③运聚单元最有利于油气聚集,资源丰度最高,建议在该地区实施勘探部署方案,较为有望实现油气发现。After many years of exploration,the Ogaden basin in Ethiopia is still in the early evaluation stage.Based on the basic petroleum geological conditions of the basin,the characteristics of the main source reservoir and hydrocarbon source rock are defined.This paper carries out basin simulation work,analyzes the hydrocarbon generation and expulsion characteristics of source rocks,and points out favorable hydrocarbon accumulation zones.Oil and gas resources are quantitatively evaluated by the analogy method of migration and accumulation coefficient.The study shows that the lower Jurassic Bokh formation has dark gray and black gray mudstone with high content of organic matter,which is the main source rock of the basin.Hydrocarbon source rock organic matter type is given priority with typeⅡA,high evolution degree,born in dry gas,condensate gas and condensate.The predicted oil resources in the basin are 60×10 8 t,and the natural gas resources are 4.5×10 12 m 3.The basin can be divided into four oil and gas accumulation units,among which the third migration and accumulation unit is the most favorable for oil and gas accumulation and has the highest abundance of resources.

关 键 词：欧加登盆地 Karroo群 烃源岩特征 资源潜力 

分 类 号：P618.13[天文地球—矿床学]