The Oklahoma Woodford shale has produced hydrocarbon since the early 1950s. Recent horizontal development using multistage fracture stimulations of the CANA Woodford located in the Anadarko basin have resulted in high initial gas-flow rates, and substantial liquid production when in the gas condensate window. Completion type and strategy has changed from methods used during the initial discovery phase in 2005, to the present development phase in 2011. This paper compares completion parameters used for a given time period to the bulk average production trend, using a linear flow transient model. Using the averaged production profile, the stimulated reservoir volume (SRV), effective fracture half-lengths, reservoir system permeability (km h), productivity index (PI), and overall stimulation effectiveness were determined.

Ranking of fracture-stimulation effectiveness is made from production-derived bulk reservoir properties, including:

  • the product of fracture surface area and square root of the effective formation permeability (Ackm1/2)

  • apparent skin (s’)

  • hydrocarbon pore volume (HCPV)

The results are summarized in tables showing effect of completion factors to production outcome.

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