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苏联和北美(美国和加拿大)、中东、北非(阿尔及利业、突尼斯、利比亚和埃及)、北海(英国、挪威、丹麦)地区是世界五大油区,其石油产量和储量约占止目前世界石油产量和储量的四分之三。下面从沉积盆地面积,原油产量和储量,1987年探井和生产井数目这三方而对它们加以比较、介绍。沉积岩的分布面积对石油来说很重要。世界头两大油区——苏联和北美的沉积岩分布面积也最大,分别为1400万平方公里和1300万平方公里(其中分别都有300～400万甲方公里
The Soviet Union and North America (the United States and Canada), the Middle East, North Africa (Algeria, Tunisia, Libya and Egypt) and the North Sea (Britain, Norway and Denmark) are the top five oil regions in the world with oil production and reserves accounting for only about the world Three-quarters of oil production and reserves. The following is a comparison of depositional basin areas, crude oil production and reserves, 1987 exploration wells and the number of production wells. The area of sedimentary rocks is very important for oil. The world’s two major oil regions - the Soviet Union and North America, the largest area of sedimentary rock distribution, respectively, 14 million square kilometers and 13 million square kilometers (of which there are 300 to 4 million square kilometers