use of the composition of water environment with delayed transverse size for maintaining the casing string in the borehole and the way to strengthen the drilling of sc vazhiny

摘要

the present invention relates to the use of a u0441u0448u0438u0432u0430u0435u043cu043eu0439 composition with controlled transverse size, preferably delayed transverse u0441u0448u0438u0432u043a oh,as a material for building and heat insulation pipes, used as a casing string in drilling wells, in particular oil drill holes in the both maintenance and operationssuch as oil production in a well.