CASE STUDY StackFRAC technology outperforms conventional “plug-and-perf” BACKGROUND The Barnett Shale in northeast Texas was discovered in the mid-1950s, but the commercial exploitation of this formation began in 2001 when horizontal drilling and multi-stage fracturing were introduced. With porosity from 3 to 5% and permeability from 0.07 to 0.5 microdarcy, various completions strategies were tested as operators attempted to determine the b

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