Large potential reserves remain for secondary recovery in Ohio

Thomas E. Tomastik Ohio Division of Oil and Gas Columbus As part of the U.S. Department of Energy's (DOE) Tertiary Oil Recovery Information System (TORIS) project, the Ohio Department of Natural Resources, Division of Geological Survey and the Division of Oil and Gas conducted an evaluation in 1995 of the oil remaining in about 80% of the reservoirs in the Appalachian basin portion of Ohio. This study indicated that these reservoirs contained approximately 5.7 billion bbl of original oil in place (OOIP) and that only about 369 million bbl of oil or 6.5% had been recovered. This is a very low recovery and essentially only primary production.1 Since 1903, when...

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