Enhancing the Fracture Growth Uniformity of Perforation Clusters by Pre-injection of Cold Water.

This study investigated how thermoelasticity impacts the uniformity of cluster stimulation and fracture initiation and growth in horizontal, multi-fractured laterals. Thermal cooling has previously been shown to lower the minimum principal stress and induce fracturing in conventional reservoirs. In the current study, cool fluid was injected prior to the primary stimulation to investigate whether the local minimum principal stress could be reduced.