Scott R. Reeves Advanced Resources International Inc. Arlington, Va. William K. Morrison Nomeco Oil & Gas Co. Jackson, Mich. David G. Hill Gas Research Institute Chicago Downhole pumps and refracturing are two ways D to significantly improve production rates from the Antrim shale, a tight formation in the Michigan basin (U.S.) and the objective of a major natural gas play. Candidate wells for restimulation can be identified by pressure build-up tests, and specifically productivity index-vs.-permeability plots based on these tests. The work in the Bagley East B4-10 well illustrates the possible production imp...

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