More than 40% of the world’s conventional gas reserves are estimated to be in reservoirs that contain significant amounts of Hydrogen Sulfide and Carbon Dioxide (acid gas). The presence of H2S and CO2 is proportions that could be as high as 70%, and the potential presence of heavy metals pose a number of challenges for drilling, cementing, completion, production and intervention. The International Energy Agency expects gas demand to grow by as much as 2% per year over the next two decades, and with the depletion of conventional (and sweet) reservoirs, the requirement to develop technologies that would enable the safe and economic exploitation of high CO2 and H2S gas resources is increasing. Additionally, the disposal and utilisation of these gasses is becoming an issue from a technical and regulatory perspective. This Forum will discuss the challenges associated with handling of this acid gas throughout the lifecycle of the field, and in particular which resource opportunities are beyond current technologies. Focus will be on the following areas: Standards and regulations associated with High H2S and CO2 Subsurface effects including reservoir souring Integrity management and flow assurance Capture and separation technology Disposal and utilisation Sour/Acid Gas Monitoring Technology Knowledge Management and Skills Development