| 摘要 |
FIELD: mechanic. ^ SUBSTANCE: the invention relates to the machine building industry and can be used in oil and gas industry, during construction of pipelines for transportation of oil products, process liquids, and chemically aggressive fluids. The technical result of the invention is increase in reliability, decrease in cost and metal consumption of metallopolymeric tubing, increase in their fabricability and efficiency. In a metallopolymeric tube, the metallic tube ends are protected with fixers placed to the internal surface of the metal tube, designed as metal bushes with ledges and a cylindrical seating part, the diameter of the outside surface of seating part of the fixers is equal to the internal diameter of the outer metal tube, the diameter of the inside surface of fixers is equal to the internal diameter of the polymeric tube, the outside surface of the ledges has a conic shape, with a conicity angle equal to the angle of the tapered thread of the metallic tube, the bigger diameter of conic ledges surface is equal of outside diameter of the mating edge of the tapered thread of metallic tube; as the polymer tube, a thin-wall fiberglass tube with smooth internal surface is used, the outside diameter of which is 1/1.5 mm smaller than the inside diameter of the metallic tube, and its length is smaller than the length of the metallic tube by the double length of the seating surface of the fixer; the thin-wall inside fiberglass tube from thrusts the internal ends of the fixers at both sides with its ends. In the method of metallic tube production, a thin-wall tube of fiberglass is used as the polymer tube, on the ends of which, plugs with holes are installed by screwing them on the threaded ends of the tube to the end so that the plug tightly enters the inside surface of the fiberglass tube on the distance 7/10 mm, thus centering the fiberglass tube relative to the metallic tube and protecting the inside surface sections of the metallic tube against concrete solution ingress, from its edge to the length of the putting fixer; the concrete solution is fed from the hole in one of the plugs up to the uniform outflow of the concrete solution from the free hole of the plug on the opposite end of the metallic tube, after the consolidation of the concrete solution, the plugs are removed and fixers are glued in. ^ EFFECT: increased reliability and efficiency, decreased costs and material consumption of well tubing. ^ 2 cl, 2 dwg |
