FIELD: oil industry, particularly methods or devices for cementing, for plugging holes, crevices, or the like.
SUBSTANCE: method involves performing injection of flowable cement mortar through flexible flush-joint pipe of coiled tubing assembly into hole annuity; performing time-delay to provide cement hardening. The flexible flush-joint pipe is made as pipe having diameter of not more than 32 mm. Pipe with lesser diameter is lowered into hole annuity from ground surface between surface casing and production string. Cement mortar has density and pressure experimentally selected in dependence of length of pipe to be lowered. Cement mortar fills pipe interior and hole annuity up to day surface level. During cement hardening pipe is left in hole annuity. After cement hardening the pipe is cut at day surface level.
EFFECT: increased simplicity due to elimination of cement bridge forming in well.
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