A mathematical model is offered for conjugate heat exchange when gas flows in the section of a vertical well. The motion medium described using two-dimensional axisymmetric stationary formulation based on boundary-layer equations. turbulent flowing due to reservoir energy considered. Natural taken as travelling medium. numerical simulation results are presented form dependences flow temperature...

During the trial production of marine gas hydrate in former Soviet Union, Canada, North Slope Alaska, South Sea Trough Japan and Shenhu China Sea, problem sand water cannot be avoided. The problems process natural depressurization exploitation have seriously restricted efficiency hydrate. are some main factors that prevent being commercially exploited. Therefore, it is urgent to carry out usefu...