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1油砂资源概况油砂是指出露地表或近地表(常规石油资源深度以浅范围)包含有烃类的砂岩和碳酸盐岩。随着经济的发展和油气资源日益减少的客观现实,未来的能源缺口将在相当程度上需要依靠包括油砂资源在内的非常规油气来填补空位。世界上油砂资源较为丰富的国家有:加拿大、俄罗斯、委内瑞拉、尼日利亚和美国。其中,加拿大
1 Overview of oil sands resources Oil sands are sandstones and carbonates that contain hydrocarbons at or near the surface (conventional oil resources have shallow depths). With the economic development and the objective reality of decreasing oil and gas resources, the future energy shortage will need to rely on unconventional oil and gas resources, including oil sands resources, to fill vacancies to a certain extent. The world’s oil sands are more abundant countries: Canada, Russia, Venezuela, Nigeria and the United States. Among them, Canada