Technology advances and oil prices above $50/barrel permit companies to extract far more oil from existing wells using secondary and tertiary recovery methods and target 'heavy' and other 'nonconventional' oil supplies as light oil reserves diminish.
"Within the last decade, technology advances have made it possible to unlock more oil from old fields, and, at the same time, higher oil prices have made it economical for companies to go after reserves that are harder to reach. With plenty of oil still left in familiar locations, forecasts that the world's reserves are drying out have given way to predictions that more oil can be found than ever before."
"Typically, oil companies can only produce one barrel for every three they find. Two usually are left behind, either because they are too hard to pump out or because it would be too expensive to do so. Going after these neglected resources, energy experts say, represents a tremendous opportunity."
"Ironically, most of the oil we will discover is from oil we've already found," said Lawrence Goldstein, an energy analyst at the Energy Policy Research Foundation, an industry-funded group. "What has been missing is the technology and the threshold price that will lead to a revolution in lifting that oil."
To illustrate, "the Kern River oil field near Bakersfield, CA, discovered in 1899, was revived when Chevron engineers here started injecting high-pressured steam (Ed: produced from coal burning plants) to pump out more oil. The field, whose production had slumped to 10,000 barrels a day in the 1960s, now has a daily output of 85,000 barrels."
"And in Texas, Exxon Mobil expects to double the amount of oil it extracts from its Means field, which dates back to the 1930s. Exxon, like Chevron, will use three-dimensional imaging of the underground field and the injection of a gas - in this case, carbon dioxide - to flush out the oil."
"There is still a minority view, held largely by a small band of retired petroleum geologists and some members of Congress, that oil production has peaked, but the theory has been fading."
"I am very, very seriously worried about the future we are facing," said Kjell Aleklett, the president of the Association for the Study of Peak Oil and Gas. "It is clear that oil is in limited supplies."
"Many oil executives say that these so-called peak-oil theorists fail to take into account the way that sophisticated technology, combined with higher prices that make searches for new oil more affordable, are opening up opportunities to develop supplies. As the industry improves its ability to draw new life from old wells and expands its forays into ever-deeper corners of the globe, it is providing a strong rebuttal in the long-running debate over when the world might run out of oil."
Thanks to Mark Boshnack
Read the full story: Oil Innovations Pump New Life Into Old Wells
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