In 2004, Indonesia has discovered 850 trillion cubic feet (tcf) of potential gas hydrate deposits as alternative energy to fuel oil at least in two locations, in South Sumatra's southern waters extending to West Java (625 tcf) and in the Sulawesi sea (233.2 tcf). The laboratory and simulation production behaviour of gas hydrate under hot sea water injection as alternative of Indonesia hydrate production, have been done under laboratory condition with combination of synthetic hydrate and porous sediment. Some flow assurance challange issued also have been investigated. These preliminary study are to investigate the temperature profile distribution, operational parameters and flowing characteristics of the dissociated gas and water from hydrate in porous sediment systems under synthetic hydrate and experimental setup. The experiments have been conducted by injecting hot sea water where composition is near to Indonesian sea water characteristics with different temperatures and rates. The result find that the gas production rate increases with time until reach maximum, and then it begins to decrease. The injection water temperature and rate, as well as the hydrate content in the synthetic sediment, all influence the energy ratio of thermal stimulation production. The high temperature sea water injection found potentially creating scale problems.

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