--> Abstract: Antrim Shale Resource and Reservoir Characterization as an Analog for Diffusion Controlled Gas Production from the Monterey Formation, by D. Decker and B. J. Bilodeau; #90945 (1997).
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Abstract: Antrim Previous HitShaleNext Hit Resource and Reservoir Characterization as an Analog for Diffusion Controlled Previous HitGasNext Hit Production from the Monterey Formation

DECKER, DAVID, and BRUCE J. BILODEAU

Between 1990 and 1995 Previous HitgasNext Hit production from organic rich siliceous shales has more than doubled from 136 bcf/year to 300 bcf/year. The increased Previous HitgasNext Hit rates and reserves per well have resulted from comprehensive reservoir characterization coupled with advanced stimulation techniques and production practices modified to optimize Previous HitgasNext Hit rates from these complex Previous HitshaleNext Hit reservoirs. Of equal importance, laboratory testing established that Previous HitgasNext Hit is released from the Previous HitshaleNext Hit in a nonlinear function of decreasing reservoir pressure, indicating the critical requirement of producing the Previous HitshaleNext Hit at a minimum bottom hole pressure before substantial Previous HitgasNext Hit rates could be achieved.

Recent geochemical studies integrated with field Previous HitgasNext Hit content measurements quantified the relationship between increased Previous HitgasNext Hit storage capacity with increasing organic content for the Antrim Previous HitShaleNext Hit in Michigan Basin. With a mean of 8% TOC and a Previous HitshaleNext Hit thickness of 100 feet at depths averaging 1500 feet, yields a Previous HitgasNext Hit rich reservoir averaging 16 bcf/mi{2}. By comparison, the organic rich siliceous shales of the Monterey Formation. with TOC values ranging between .40 and 9.16 wt. %, a mean value of 3.80% and thickness of several hundred feet, the Monterey Fm. houses a vast unconventional Previous HitgasNext Hit resource. Recent Previous HitgasNext Hit content measurements from the Monterey Formation. at Elk Hills and Buena Vista Hills have confirmed that the organic rich Previous HitshaleNext Hit have measurable sorbed Previous HitgasNext Hit. Measured Previous HitgasNext Hit contents are respectively 50-100 scf/t and 40-70 scf/t. These Previous HitgasNext Hit content values are remarkably consistent with other Previous HitgasNext Hit productive shales. Extensive resource and reservoir characterization performed on the Antrim Previous HitShaleNext Hit when properly modified should be beneficial to understanding the resource and reservoir characteristics of diffusion controlled Previous HitgasTop production from the Monterey Formation.

Search and Discovery Article #90945©1997 AAPG Pacific Section Meeting, Bakersfield, California