全球非常规油气资源评价

Assessment of global unconventional oil and gas resources

重点评价全球非常规油气可采资源潜力,揭示非常规油气富集主控因素及潜力区。完善重油、油砂、致密油、油页岩、页岩气、致密气、煤层气7类资源划分标准,利用全球含油气盆地商业数据库、北美地区单井资料包及中国石油公司在全球非常规油气区块的勘探开发基础数据,通过对7类非常规油气资源关键参数在地理信息系统(GIS)平台上进行空间图形插值运算,形成可采资源丰度等值线图,系统评价全球7类非常规油气资源潜力。评价结果揭示:1全球7类资源主要分布在363个含油气盆地的476套层系内。2全球非常规石油可采资源量为4 421′108 t,非常规天然气可采资源量为227′1012 m3。3非常规油气资源可分为"源控型"和"层控型"两类。"源控型"资源主要受全球6套优质烃源岩控制,其中致密油气资源具有"源储一体"的特征,开发利用前景最优;"层控型"的油砂和重油资源受后期构造改造作用的控制,主要分布于中新生代盆地斜坡带,浅层资源开发利用前景好。4未来非常规油气的发展除目前北美热点地区外,西西伯利亚盆地和内乌肯盆地的致密油、阿拉伯盆地的重油等也将是全球未来非常规油气发展潜力较大的地区。

This paper evaluates the recoverable unconventional oil and gas resources around the world, reveals main controlling factors and potential regions for the rich accumulation of unconventional oil and gas, and standardizes the classification of seven types of resources（i.e., heavy oil, oil sand, tight oil, oil shale, shale gas, tight gas, and coalbed methane）. By virtue of commercial databases for global petroliferous basins, together with single-well data packages in North America and basic data of exploration and development of Chinese companies in unconventional oil and gas resources blocks around the world, contour maps of abundance for global recoverable resources are formed through spatial graphic interpolation of key assessment parameters of seven types of unconventional oil and gas resources on the Geographic Information System（GIS） platform, which systematically evaluate the potential of seven types of unconventional oil and gas resources. The assessment reveals：（1） These seven types of resources around the world are distributed predominantly in 476 formations in 363 petroliferous basins.（2） Total recoverable unconventional oil and gas resources in the world are respectively 442.1 billion tons and 227 trillion cubic meters.（3） Unconventional oil and gas resources can be divided into ＂source-bound type＂ and ＂strata-bound type＂. The ＂source-bound type＂ resources are mainly controlled by 6 groups of high-quality source rock around the world, among which, the tight oil and gas resources are featured by the ＂integration of reservoir and source＂, presenting the best prospect for the development and application, and the ＂strata-bound type＂ oil sand and heavy oil resources, controlled by the transformation of the late structure, are mainly distributed in the slope belt of the Mesozoic-Cenozoic basins, presenting a good prospect for the resource development and application in the shallow layers.（4） Besides hot spots in North America, tight oil in the West Siberia Basin and the Neuquen Basin as well as heavy oil in the Arab Basin will become potential targets for the development of unconventional oil and gas resources in the future.