by Staff Writers
Washington (UPI) Aug 31, 2011
A study found that injecting a greenhouse gas into older oilfields could squeeze out millions more barrels of crude, the U.S. Department of Energy said.
The DOE said the results reported by the University of Kansas established the feasibility of using carbon dioxide to extend the productivity of U.S. oilfields while at the same time permanently keeping the gas out of the atmosphere.
The study focused on the Arbuckle Formation in Kansas, home to various mature oilfields where production peaked in the 1950s. The area is occupied primarily by small producers and typical of several other fields in the state.
Researchers used core samples from the Arbuckle to simulate a process in which carbon dioxide is pumped deep underground and where it mixes with crude oil. The result of the process, known as near-miscible CO2 flooding, is a swelling of the oil that pushes it toward the production well.
The DOE said in a written statement the results mean as much a 500 million barrels of crude could some day be recovered from Kansas fields.
The next phase of the project will be to better map the Arbuckle Formation.
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The Middle Kingdom meets the Middle East
Beirut, Lebanon (UPI) Aug 31, 2011
China's effort to secure energy resources in the Middle East is going into overdrive as its dependence on the region's oil increases. But the Chinese are concerned that their efforts to capitalize on waning U.S. power in the region and six months of unremitting political turmoil could be undermined by the hostility between Iran and Saudi Arabia, mortal enemies and two of China's biggest ... read more
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