TUBULAR DRILL ROD, AS WELL AS SYSTEM AND METHOD OF PIPELINE LAYING Russian patent published in 2020 - IPC E21B7/04 E21B19/08 E21B19/16 E21B17/18 

FIELD: soil or rock drilling; mining.

SUBSTANCE: group of inventions relates to the laying of underground cables. Tubular drill rod is used for construction of well in soil from initial point to end point along preset drilling line. Well penetration is performed by means of drilling device with drilling tool for soil separation at supply of tubular drill rods. Tubular drill rod at its ends has, respectively, at least one docking section for detachable connection rigidly to tension with other element of drill string. Tubular drilling rod has at least an element for establishing a tension-rigid connection with a corresponding element of the supply device for supplying the tubular drill rod into the drilling hole and/or pulling back, and the outer wall of the tubular drill rod is monolithic. Connection by means of corresponding joint sections of tubular drill rod with other element of drill string takes place in form of connection with geometrical and/or force closure. Tubular drill rod at its first end has the first docking section, and on its opposite second end has the second docking section corresponding to the first docking section, at that the first docking section and the second corresponding docking section form a tensile jointed bellow joint. At that, one docking section is a smooth end, and the second docking section is a corresponding socket, which respectively have at least one corresponding groove, which in the assembled state form a groove, in which is inserted at least one shear-acting member to obtain a rigidly-stretching connection. Tubular drilling rod has at least two tubular drill rod arranged in inner cavity on outer wall, passing parallel along outer wall of main sections. At that, at least two main sections at their ends have connecting element for connection establishment between main sections of interconnected tubular drill rods.

EFFECT: technical result is transfer of tensile forces in drill string and reduction of time for installation.

14 cl, 23 dwg