PIPE COUPLING WITH LOAD DEFLECTING REGION Russian patent published in 2018 - IPC E21B17/02 E21B17/42 F16L15/00 

FIELD: pipes and hoses.

SUBSTANCE: group of inventions relates to an apparatus and a method for connecting pipe sections, connected to form casing strings for oil and gas wells. Coupling for connecting two pipe segments, each of the pipe segments including a pin end comprising a section having a threaded portion provided on an outer surface thereof, the coupling comprising a tubular body having a bore extending there-through, an outer surface, an inner surface, and opposed first and second ends, and a corrugated section located between the first and second ends. Inner surfaces of the first and second ends, including a threaded portion adapted to engage the threaded portion of a corresponding pin end of a pipe segment. Corrugated section is adapted for transverse deflection while maintaining torsional, compression/tension and pressure performance characteristics of the base pipe segments.

EFFECT: technical result is the removal of stress acting on the pipe string, reduction of leakage loss and/or loss of strength of the structure.

7 cl, 3 dwg