These companies are certainly sitting on a reassuring amount of oil. Saudi Aramco's proved reserves alone could keep the world supplied for several decades.

这些公司的储备足可以证明一切顾虑都是杞人忧天，单是沙特石油公司一家的储备就可以保证整个世界踏踏实实的用上几十年。

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Based on analyzing major factors of recovery efficiency, a new method of recovery calibration on newly - found proved reserves are given using multiple regression analysis.

在分析影响采收率主要因素的基础上，应用多元回归分析方法，得出了新增探明储量标定采收率的新方法。

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Venezuela is the fifth-largest supplier of oil to the U. S., providing around a million barrels a day, and its proved oil reserves are among the world’s largest.

委内瑞拉是美国第五大石油输出国，日供约100万桶，并且其已探明石油储量居世界前列。

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At current usage rates we will exhaust the proved reserves in a few decades.

FORBES: A Shield Against The Next Oil Shock

Firms that had used unrealistically low cost estimates for extracting oil from ageing fields have suddenly been bailed out of trouble by the price rise, which makes extraction viable, and thus reserves proved, even at a higher cost.

ECONOMIST: Oil companies

Since 1999 Encore has boosted production by an average 24% and its proved reserves by 20% at a time when the rest of the industry has been flat to slightly down in both key categories in the U.S., according to research firm John S. Herold.

FORBES: Down and Dirty