据美国地质调查局估计，全球未发现的常规储量平均增加数分别为6650亿桶石油、1429万亿立方英尺天然气和160亿桶天然气液体。

　　这些油气储量数构成了全球油气资源的一个重要部分。随着时间的推移，借助更好的评估方法、新的技术以及对目前储层的更好了解，全球目前的油气储量估计数有望进一步增加。

　　（李 峻 编译）

　　原文如下：

　　USGS Releases New Estimates for Global O&G Reserves

　　Monday, June 18, 2012/Rigzone

　　The U.S. Geological Survey has released a new global estimate for potential additions to oil and gas reserves due to reserve growth in discovered fields outside the United States. The USGS estimates that the mean undiscovered, conventional reserve additions in the world total 665 billion barrels of oil (bbo), 1,429 trillion cubic feet (tcf) of natural gas, and 16 billion barrels of natural gas liquids.

　　These volumes constitute a significant portion of the world’s oil and gas resources and represent an estimate of the potential future growth of current global reserve estimates over time based on better assessment methodology, new technologies and greater understanding of current reservoirs, among other advances.