The Appalachian Basin, the oldest domestic United States producing area, is home to a number of active waterfloods and even more waterflood candidates. Efforts to evaluate existing floods and assess new opportunities, however, are often hampered by scant reservoir rock and fluid data, as well as incomplete, or nonexistent, fluid production and injection records.

The purpose of this paper is to illustrate, through the study of a case history, a practical methodology for evaluating a 30-year old Appalachian Basin waterflood, beginning with culling original in-house documents and well files and concluding with numerical simulation. The studied flood is the Richardson Unit Waterflood (Calhoun and Roane Counties, WV).

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