Storage of Natural Gas in Depleted Underground Oil and Gas Reservoirs

Underground gas storage has become a strategic reserve for many countries and plays important role in balancing between supply and demand in different seasons. It also provides the countries with a tool to play their role in the world of energy and supports their commitment to export gas. This paper discusses different technical aspects of the underground gas storage in depleted oil and gas reservoirs. Technical and operational challenges of converting these reservoirs to gas storage is presented and discussed. Finally, underground gas storage projects in Iran are presented.