... compliance and well health-check purposes. However, in deepwater environment, it is difficult to comply with this periodic well test requirement mainly due to production flow line slugging, plant process upset and/or tripping resulting in production deferment and operational risk exposure. Furthermore...

... and give undesirable production deferment. To enable well fluid sampling from each individual producer, a subsea sampling access has been installed in Xmas tree. ROV deployed subsea multiphase sampling tools (SuMS Tools) have been developed, and a first subsea sampling campaign has been executed...

... which directly impact OPEX in terms of intervention costs, and revenue losses in terms of production deferment. It must be understood that CAPEX is a function of the design of the facility, and therefore dictates the level of OPEX and revenue losses. Optimization of all three factors must be done...