FIELD: mining.
SUBSTANCE: proposed method comprises application of elastic and elastoplastic deformation of thread joint elements. Elastoplastic sealing element represents a ring seal made of allow with memory, for example, nitinol. Said ring seal is arranged between butts of interconnected tubing pipes. Said ring seal is pre-cooled in cryostat to low temperature, for example, that of liquid nitrogen, to be stained therein, changing in shape and height sizes. Thereafter it is quickly fitted in place inside said coupling between butts of said pipes.
EFFECT: tightness of casing thread joints at whatever loads, longer life.
3 cl, 4 dwg
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