DOE sees vast energy resource in Permian basin residual oil zones

08/06/2012
Billions of barrels of oil that could increase domestic supply, help reduce imports, and improve US energy security may be potentially recoverable from residual oil zones, according to initial findings from a study supported by the US Department of Energy's Office of Fossil Energy. The recently completed study, conducted by researchers at the University of Texas-Permian Basin, is one of several DOE-supported research projects providing insight that will help tap this valuable but overlooked resource. Residual oil zones, called ROZs, are areas of immobile oil found below the oil-water contact of a reservoir. ROZs are similar to reservoirs in the mature stage of "waterflooding," i...
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