The design of the tubing, casing and method of assembling them in the casing for production wells

摘要

FIELD: motors and pumps.SUBSTANCE: invention relates to a tubing. Tubing contains a pipe with calibrated ends and attached nozzles. Calibrated ends of the tube and the internal surfaces of the nozzles associated with them are made with a cylindrical and conical surfaces. Nozzles are threaded for connection to a pipe string. Conical surfaces of the branch pipes are made stepwise with the formation of grooves in which the solder or sealant is placed.EFFECT: as a result, the tightness of the pipe joint is increased and their screwing is improved.9 cl, 6 dwg, 1 tbl