Recent developments in the energy supply situation have intensified the search for and evaluation of new "Clinton" sandstone prospects throughout eastern Ohio.

Deposition of the "Clinton" sandstones was as distributary channels and barrier bars associated with deltas and as offshore bars along a westward transgressing shoreline. Trapping is controlled stratigraphically and structure serves only to aid in the separation of formation fluids within a reservoir. Minor local structure also helps to improve reservoir conditions through associated fracturing.

Clinton lithology is characterized by interbedded fine- to very fine-grained sandstone, siltstones, and shales. Porosity generally averages 8-9 percent and permeability less than 15 md. Because of these characteristics, the formation requires stimulation by hydraulic fracturing for commercial production to be achieved.

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