产油量每年以减少10%以上，探明储量只有现今年产量的13%。

Oil production is falling by up to 10% a year, and proven reserves are now equal to just 13 years of current output.

在全球总计7万个油田中，20个最大油田的产油量，占到全球总产量的四分之一。

The world's 20 largest - out of a 70,000 total - account for a quarter of world production.

有人猜测说，包括刚果在内的整个艾尔·伯丁盆地的产油量可能将远远超过苏丹60亿桶的探明储量。

Some speculate that, Congo included, the entire Albertine basin may yield even more than Sudan's 6 billion barrels of proven reserves.