Thermobaric conditions of base gas-hydrates formation and risk of their destruction at development of the Shtokman gas-condensate field

The main reason of gas-hydrate deposits studying actuality is consideration of hydrocarbons as a raw material, that is capable to replace the oil, with its limited reserves. The concentration of methane in the atmosphere increases annually by 1%. Not excluding anthropogenic sources, the researchers associate this with appearance of a large number of underwater methane discharging fields. The most numerous and active methane discharging field was found in the north-eastern Sakhalin shelf and Okhotsk Sea borderland slope.On the assumption of natural conditions evaluation within the area of the Shtok-man gas-condensate field (GCF), among the potentially dangerous geological proc-esses and events may be mentioned: cryogenic processes, seismicity (including neo-tectonic processes), gas-hydrates, characteristics of the base relief and soil proper-ties, the possibility of back surface subsidence to the end of operating life.