From Rigzone.com (//%22http://www.rigzone.com/news/article.asp?a_id=33074%22):
quote:
...Energy Reclamation's gas-injection system can, over time, produce up to 60 percent of the stranded oil in some of Oklahoma's mature reservoirs.
The portable system generates carbon dioxide, or CO2, at the well site. The gas is pumped into the formation, restoring pressure in the reservoir, and "sweeps" the residual oil to the surface.
"It's a very slow sweep. It takes months," Bakhtiyarov said.
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Oklahoma has about 70,000 marginal oil wells -- wells that produce less than 10 barrels of oil a day from mature fields, Bakhtiyarov said. Most Oklahoma oil wells produce, on average, two barrels a day.
Energy Reclamation's technology could help boost Oklahoma production, said Howard Kelsey, a principal of the company.
"This is not about finding new reserves," he said. "It's about repressurizing an existing, producing structure."