EnergyProducing more oil by capturing carbon
Any method that leads to the production of more oil seems counter to the prevailing wisdom on climate change that says use of more greenhouse-gas-emitting fuel is detrimental. There is one oil-recovery process, however, which some say could be part of the climate change solution and now unites unlikely allies in industry, government and environmental groups.
Any method that leads to the production of more oil seems counter to the prevailing wisdom on climate change that says use of more greenhouse-gas-emitting fuel is detrimental. There is one oil-recovery process, however, which some say could be part of the climate change solution and now unites unlikely allies in industry, government and environmental groups, according to an article in Chemical & Engineering News (C&EN), the weekly news magazine of the American Chemical Society.
An ACS release reports that Jeff Johnson, a senior correspondent at C&EN, explains that a process called enhanced oil recovery (EOR), which uses carbon dioxide to force the last bits of oil out of partially depleted wells, is fueling this rare agreement. The technique is not new, but what is becoming tantalizing now is where the carbon dioxide comes from. With new advances in carbon capture, the possibility is growing that the carbon dioxide could come from power plants that otherwise would release it into the atmosphere. The environmental and economic appeal is already driving new research into carbon capture techniques. And if power plants could offset the costs of implementing these techniques by selling captured carbon dioxide to oil companies for EOR operations, it could be a win-win situation. An additional perk of enhanced oil recovery is that, according to the oil industry, about half of the carbon dioxide they use to extract oil stays underground.
As the article notes, however, the process is not entirely without flaw or opposition. The carbon dioxide which is supposed to remain tucked away can and has escaped through leaks. In one 2011 case, an inadequately capped old well-bore released carbon dioxide for thirty-seven days, suffocating wildlife in the area. Not all environmental groups are onboard. One is challenging a proposed project in California that they say could put the local community at risk.
— Read more in Jeff Johnson, “A Carbon Commodity,” Chemical & Engineering News 92, no. 17 (28 April 2014): 23-25
