Study on Hydrate Formation in Deep-Water Gas Well Intervention Operation

In the development of deepwater high temperature and pressure gas wells, frequent intervention operations are required. Wellbores near seabed have risk producing massive hydrates plugging wellbore. Based on non-steady state model, a temperature-pressure coupling model well was established, physical simulation experiment hydrate formation under carried out by using self-developed deposition reaction device. Intervention operation wells. With reference to test data real in South China Sea, rate analyzed influence different production rates, running speed tool size, distribution The rules obtained. Simulation prediction results can be used predict timing location operations.