The laboratory upgraded the systems for the simulation experiment of deepwater drilling fluid circulation and the gas-liquid two-phase flow experiment of high-pressure wellbore, enhanced its R&D capability and technical strength in artificial lift, wellbore pressure control and deepwater wellbore safety test, and developed technologies for the test and evaluation of deepwater oil and gas development technology, test and R&D of deepwater wellbore working fluid performance and safety evaluation of wellbore at deepwater stratum and hydrate reservoir.