Evaluation of Fracturing Methods for the Stimulation of Devonian Shale in Northern Ohio

摘要

Columbia drilled, stimulated, and evaluated five wells in two test areas--Lorain and Trumbull County, Ohio. They cored and extensively logged one well in each county. Foam type hydraulic fracturing served as a standard stimulation method for both areas for comparing the effects of cryogenic and displaced explosive fracturing. A comparison of core analyses from both test areas with those from gas producing areas showed that the shale sections in both areas contain adequate matrix gas for commercial production. Although they observed several gas shows in Lorain County and measured high concentrations of matrix gas in the core from both project areas, no significant gas production resulted from 16 individual stimulations in the Devonian shale sections of 10 wells in Trumbull and Lorain Counties, Ohio.