Abstract: A new water control technology,autonomous inflow control device(AICD),has the function of intelligent recognition and suppression of aqueous phase.Through the establishment of a multi-segment well model of an offshore highpermeability sandstone reservoir with bottom water,the accurate numerical simulation study of the AICD technology was carried out.The results indicate AICD can inhibit the bottom water coning in speed and expand the bottom swept area,reduce the water cut and improve the oil production.The study shows the AICD effect is the best before water cut reaches 80%,while AICD completion can also effectively increase the production when the comprehensive water cut reaches 92%in the target oil field.AICD technology provides a new thinking way for the development of water control technology in offshore oil field.