FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry, in particular, to methods for repair of coil tubing and can be used for liquidation of cracks, holes, ruptures and other defects of coil tubing where logging cable is placed at preproduction (repair) depots without violation of the cable isolation and integrity. The invention essence consists in that the coil tubing together with the logging cable is wound onto a drum and delivered to the repair depot, unwound and the coil rubbing section with defects is cut at a special-welding skid, removed and replaced with a repair kit representing a part of the coil tubing; thereafter repair kit is welded to theend surface of the cut coil tubing. Then the cable is washed from the coil tubing, the repair kit is cut, ends of the cut coil tubing section are matched and welded and then the removed logging cable is washed into (passed through) the coil tubing wound to the drum. At that stage repair process is over and the drum with the wound coil tubing and logging cable inside is transported to the well.
EFFECT: improving efficiency of repair.
8 dwg
