PROCESS SYSTEM FOR TUBING STRING REPAIR Russian patent published in 2009 - IPC E21B17/01 B23Q41/00 

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production can be used for tubing sting manufacture and repair. Process system for tubing string repair includes heating department, internal surface of repaired tubing string shot blasting department, linering preparation department, repaired tubing pipe and liner aligning department, linering department with lubricant use, washing out lubricant and drying department, linered pipe ends cutting and threading department, external surface of repaired tubing string shot blasting department, pipe internal surface coating department, heating of pipe internal coating hardening department, collar connection department. At linered pipe ends cutting and threading department also located department of liner ends welding to repairing tubing pipe ends and ends cleaning after welding. Linering preparation department equipped with department of liner coating with water proof material. Linered pipe heating department located after washing out lubricant and drying department or combined with heating of pipe internal coating hardening department. Area between departments equipped with intermediate storages, quality control departments, departments of preparation for the next process, loading-unloading mechanisms and transportation mechanisms.

EFFECT: increase in efficiency and repair quality of used tubing strings.

4 cl, 1 dwg