DEVICE FOR THERMAL INSULATION OD WELLS IN PERMAFROST ROCKS

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to u043du0435u0444u0442u0435u0433u0430u0437u043eu0434u043e - u0431u044bu0432u0430u044eu0449u0435u0439 industry and is u0434u043bu00a0 exploitation of gas and u043du0435u0444u0442u00a0u043du044bu0445 wells in u043cu043du043eu0433u043eu043bu0435u0442u043du0435u043cu0435u0440u0437u043bu044bu0445 rocks. the purpose is to improve the effectiveness of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 u0442u0435u043fu043bu043eu0438u0437u043eu043bu00a0u0446u0438u0438 while increasing its reliability.the device contains a coaxial located on the casing string (s) u043fu0430u0440u043eu0436u0438u0434u043au043eu0441u0442u043du0443u044e cooling installation, u043eu0431u0440u0430u0437u0443u044eu0449u0443u044e with ok ring cavity filled with bottom u043au043eu043au0438u043fu00a0u0449u0435u0439 fluid (wnc). u043au043eu043bu044cu0446u0435u0432u0430u00a0 cavity has two of the compartment, separated by a vertical airtight bulkhead. each compartment of the installation part is filled with the wnc and contains an autonomous u043au043eu043du0434u0435u043du0441u0438u0440u0443u044eu0449u0443u044e and u0438u0441u043fu0430u0440u0438u0442u0435u043bu044cu043du0443u044e part.in winter, the ncw of compartments under the action of t might good starts u0438u0441u043fu0430u0440u00a0u0442u044cu0441u00a0. a pair of ncw u043fu043eu0434u043du0438u043cu0430u044eu0442u0441u00a0, u043au043eu043du0434u0435u043du0441u0438u0440u0443u044eu0442u0441u00a0 and u0441u0442u0435u043au0430u00a0 on wall compartments cooled their walls and u043cu0435u0440u0437u043bu044bu0439 soil wells, u0430u043au043au0443u043cu0443u043bu0438u0440u0443u00a0 it cold. in summer, the bay by good works, as well as in the winter.the bay of u043cu0435u0440u0437u043bu043eu0433u043e ground wells automatically u0437u0430u043fu0438u0440u0430u0435u0442u0441u00a0 from intense vertical convection vapours from the wnc and goes to work in the mode of gas the model u0442u0435u0440u043cu043eu0438u0437u043eu043bu00a0u0442u043eu0440u0430. 1 il.