METHOD FOR REPAIRING PIPELINE Russian patent published in 2001 - IPC

Abstract RU 2170380 C1

FIELD: repairing main and production pipelines with defective tubes. SUBSTANCE: method comprises steps of heating faulty portion of tube of pipeline that needs repairing before mounting coupling until predetermined temperature ΔT, set according to formula 1. Mounting coupling onto portion of tube heated for the whole period of mounting operation until temperature ΔT and having length l_ΔT determined according to formula 2. Formulas 1 and 2 are given in the specification. EFFECT: enhanced operational reliability of repaired portion of tube. 2 dwg

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RU 2 170 380 C1

Authors

Vershinin V.N.

Khomjak V.I.

Dimov L.A.

Dates

2001-07-10—Published

2000-01-24—Filed