The purpose of this paper is to present the results of a Gas Research Institute (GRI) evaluation to determine the optimal deepening and completion technique for the Norwood Antrim Shale unit in older Antrim wells in the Michigan Basin, including the potential range of Norwood production responses. There are approximately 500 older Antrim wells not drilled through the Norwood, that could be deepened below their current Lachine unit completion. GRI performed this work because operators are uncertain of the best deepening/completion procedure, the potential productivity of the Norwood, and the appropriate well spacing for the Norwood completions. In this paper, we show the results of actual field case histories and simulated performance projections to determine the optimal Norwood deepening method and well spacing.

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