HEAT-INSULATED FLEXIBLE POLYMER PIPE REINFORCED WITH TAPES (VERSIONS) Russian patent published in 2017 - IPC F16L59/153 F16L11/12 

FIELD: oil and gas industry.

SUBSTANCE: method is carried out by the means of using a heat-insulated flexible polymer pipe with one or more heat-insulating layers with a low heat transfer coefficient, wherein electric heating elements can be located in body of such pipe for compensation of heat losses. In addition, the outer polymer shell of such pipe has a thickness depending on the operating conditions. The proposed invention can be used for transportation of fluid produced form oil and gas condensate wells, as well as other liquids (for example, water, oil, methanol, gasoline or diesel fuel) in order to maintain their dynamic viscosity.

EFFECT: reduction of heat transfer from produced fluid to environment, prevention of water freezing inside the pipe and prevention sticking of paraffins, resins, hydrates and salts on inner surface of pipe, increase in service life of discharge pipe, increased safety of its operation, reduced cost for its operation.

12 cl, 15 dwg