Mark S Brinsden is a Senior Production Technologist, Principal Technical Expert and Team Lead – Perforating for Shell’s global business, with a focus on delivering well performance and safety from effective perforating.He runs a functional team of Subject Matter Experts and focal points throughout the Shell Global organization to help deliver results at field level. Mark has a BSc from Edinburgh University and has 35 years of industry experience covering many of the operating areas across the world. He is Chair of API RP 19B perforating committee and President and co-founder of the International Perforating Forum and International Perforating Symposium Series, as well as www.perforators.org an industry group dedicated to the advancement of perforating technology. He is active with the SPE as Chairman of the SPE Energy Information Committee, an SPE Aberdeen Board Member, an SPE Journal Technical Editor and has presented numerous papers at conferences. He travels widely throughout Shell’s global assets to provide advanced training in Perforating Optimization and detailed help with delivering optimal inflow performance from the more complex reservoirs. He is also working with several manufacturers and contractors to develop new perforating technologies and is inventor and co-inventor of several gun systems under development.