Technology solutions and challenges for marginal development of heavy oil fields in CuuLong basin, offshore Vietnam

The production of heavy oil at Dong Do field located in CuuLong basin is a success the application advanced technologies. marginal project Vietnam, so its development requires to overcome several challenges, such as high water-cut from early stage, highly unconsolidated sandstone reservoir, flow assurance problems sour and viscous crude oil, power artificial lift system, complex treatment topsides, among others. Over past decades, technology has been widely deployed industry. Apart thermal method, combination gaslift ESP makes remarkable advances by enlarging draw-down created over conventional pumping projects. In fact, with rate appeared water-coning near wellbore region that made water breakthrough increased rapidly. pilot test injecting diesel into wells applied producers positive results while significantly reduced comparing before shutin. This paper provides thorough analysis new technologies are field, highlighting key difficulties how they were resolved through successful testing cutting-edge solutions, improving reliability thus motivating consortium move on field. Also, updated schedule described, challenges be faced during next projects development.