Abstract
A one dimensional geomechanical model is used to understand how the in‐situ earth stresses relate to the geologic, completion and production practices of Rulison Field, Piceance Basin, Colorado. The modeling suggests high horizontal stress anisotropy, which will make fracture re‐orientation completions difficult. Also, stress is lithology dependent. Therefore hydraulic fractures will usually remain in sandstone intervals and terminate at bed boundaries. Additionally, for the wells modeled at Rulison, most natural fractures are aligned in the same direction as the direction of present day maximum horizontal stress. This allows for fracture growth without complex fracturing. Understanding the direction of maximum horizontal stress also enables optimal selection of target well locations. Thus, geomechanical modeling is used to better understand and optimize production at Rulison Field.
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