Hydraulic fracture growth, the dominant method of well stimulation, is controlled by the in-situ reservoir stress state. The in-situ stress state controls hydraulic fracture orientation and, for the most part, the created hydraulic fracture geometry. In-situ stress evolves over the geologic history of a reservoir, leaving footprints of this evolution such as natural fractures and anisotropic permeability. However, on a vastly different time scale of months or even hours, the reservoir stress state can be dramatically altered via fluid production and/or injection. These man-made poroelastic stress perturbations alter the stress magnitude and sometimes even the stress orientation, inducing a change...

First Page Preview

First page PDF preview
You do not currently have access to this article.