The story of the Marcellus/Utica is a story of natural gas. At least, mostly. We focus almost exclusively on natgas production here on MDN. But there is another story in the M-U, and that’s shale oil. More oil is produced in the Ohio Utica than in the Pennsylvania and West Virginia Marcellus, but all three states produce at least some oil from their shale plays. We spotted a new report about the use of carbon dioxide (CO2) and its use in “enhanced oil recovery” or EOR. The report covers (in part) the Marcellus region and was co-authored by researchers at West Virginia University.