Generalized Geology and Profile of a Utica Shale Well in Eastern OH

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A diagram by the Ohio Dept. of Natural Resources depicting the various rock layers found in eastern Ohio and where the Utica Shale fits into that picture. The Utica is considered by the U.S. Energy Information Administration to be one of the 7 most important commerical shale plays in the U.S.

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Generalized Geology and Profile of a Utica Shale Well in Eastern OH

  1. 1. Generalized Geology and Profile of a Utica Shale Well Prototype in East Central Ohio Black Hand Member (ÒBig InjunÓ) Berea Sandstone Bedford Shale/ Ohio Shale/ Olentangy Shale Onondaga Limestone Oriskany Sandstone Bass Islands/Salina Group Lockport Dolomite ÒClintonÓ sandstone Queenston Shale/ Cincinnati group Trenton Limestone/ Black River Group Beekmantown dolomite Rose Run sandstone Copper Ridge dolomite/ Conasauga Group basal sandstone Precambrian ÒBigLimeÓ Approximate base of potable groundwater www.OhioGeology.com Utica Shale Well (casing width exaggerated) Interbedded sandstone, siltstone, shale, coal, and limestone Interbedded salt, anhydrite, dolomite, and shale Sand and Gravel Sandstone Shale Limestone Dolomite Precambrian Depth (feet below ground surface) 6,000 7,000 8,000 3,000 4,000 2,000 9,000 5,000 1,000 0 5,280 = 1 mile Horizontal length up to 7,000 ft Marcellus Shale Utica Shale Typical water well depth (~150 ft) Recommended citation: Ohio Division of Geological Survey, 2011, Generalized geology and profile of a Utica Shale well prototype in east central Ohio: Ohio Department of Natural Resources, Division of Geological Survey, one sheet.

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