Abstract Refracturing of horizontal wells can be an extremely cost effective way to enhance the recovery of hydrocarbons from existing assets. In order to be successful, numerous components of the process need to be carefully scrutinized. This begins with candidate selection and concludes with proper execution in the field. This presentation will focus on the execution and results of the refrac process. Refrac case histories will be presented showing the current procedures used to implement a successful re-completion using diversion technology. Examples will include successes, successfully limited refracs (hate to call them failures), and lessons learned. Biography Neil is a Technology Manager at Pinnacle, a Halliburton service in Houston, Texas and is a registered professional engineer (P.E.). He has worked over 35 years for Halliburton in various roles including engineering, customer sales, management, and marketing. He has a vast amount of field experience implementing fracture theory into practice. Fracture evaluation, pre-frac and post-frac diagnostics, fracture production evaluation, and completion optimization are his expertise. He has worked in numerous basins across North America, and has worked globally to provide solutions and commercialize new technologies. Neil has taught various courses in completion optimization and has worked most of his career focused on Fracture Stimulation and Completions of low permeability reservoirs and unconventional source rock. He has written many technical papers and holds multiple patents. US 7,591,313 Methods of Treating Particulates and Use in Subterranean Formations, issued September 22, 2009.