Subsea Storage And Injection Of Production Chemicals Lowers Costs, Enhances Safety By Tom A. Gay, Art J. Schroeder Jr. and James E. Chitwood HOUSTON-Volatility in global oil prices is a constant and harsh reminder to oil and gas companies that they operate in a commodity market and must continually examine new methodologies and technologies to safely manage costs. During the past two decades, companies have spent hundreds of billions of dollars developing and implementing innovative deepwater projects, so it is not surprising that enterprising organizations are looking to mine deepwater solutions for potentially repurposing technologies for Gulf of Mexico Shelf and shallow-water developments. One such example utilizing deepwater technologies in shallow water is moving facilities and storage from topside decks to the seafloor. Unmanned or not normally manned (NNM) platforms, including unmanned wellhead platforms (UWHP), have been a longtime feature of cost-effective oil and gas developments in shallow-water fields in the Gulf of Mexico and other offshore regions. FEBRUARY 2019 87