Project Final Report-07122-41 The selection of candidate wells for refracturing is often very difficult based on the information available at the surface. Stress reorientation is one of several factors to consider in this well selection process. We propose a systematic methodology, based on dimensionless groups, that allows a field engineer to evaluate a well’s potential for refracturing from an analysis of field production data and other reservoir data that is usually available. This analysis confirms the important role played by stress reorientation in the success of refracturing operations.