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Abstract: Antrim Shale Fractured Reservoirs: Their Potential Throughout the Michigan Basin

Katherine C. Manger, Thomas J. Previous HitWoodsNext Hit, Previous HitJohnTop B. Curtis, Michael D. Zuber

Antrim shale gas production grew from 0.4 Bcf in 1987 to 156 Bcf in 1994, causing record gas production in Michigan. Recent industry activity suggests the play will continue to expand.

The GRI Hydrocarbon Model contains an Antrim resource base description that was developed in 1991. It was based on industry activity through 1990 and only covered the northern extent of the Antrim surrounding the current play. Significant technological improvements since then have resulted in projected near-term production lagging actual production by one to two years. Even so, the 1996 Edition of the GRI Baseline Projection predicts Antrim production will reach 1 Tcf by the year 2015.

Given the 1996 projection results, a reassessment of the potential for producing gas from Antrim shale-type fractured reservoirs was initiated. The analysis identified general geological characteristics that appear to contribute to successful wells and extrapolated them to the rest of the Michigan Basin. Data used included production and well data through 1995, GRI-funded studies, and proprietary studies and data on the Antrim

AAPG Search and Discovery Article #90950©1996 AAPG GCAGS 46th Annual Meeting, San Antonio, Texas