This paper describes the integrated workflow followed for understanding the mechanics of the hydraulic fracture stimulation interference and its impact on the gas production, gas production drivers, well performance, and recovery in horizontal wells in the Woodford Shale of the Anadarko basin. Devon Energy and Schlumberger collaborated on an integrated approach including geology, geophysics, petrophysics, geomechanics, stimulation, completion, production and reservoir engineering disciplines.
A detailed and reliable petrophysical and 3D geological model with geomechanics components at single well level was critical to understanding the fracture interference, its negative impact on the production, defining well performance drivers and operational solutions to mitigate the negative production impact of fracture interference.
Initially single well models are constructed around wells with little or no offset well fracture interference. Once acceptable reservoir parameters and hydraulic fracture geometries were understood, multi-well sector models were constructed in the 3D geologic and reservoir model to evaluate the interaction between wells. An additional benefit of the detailed 3D model is to serve as a foundation for future field development optimizing well spacing and completion designs to improve recovery and economics.