Abstract: A method of a drilling string assembly for drilling small-diameter branched channels, including installation of operating elements arranged in a dynamically perturbed section of a loaded part of the drilling string. Moreover, a drilling string assembly, comprising oscillators arranged as coupled oscillators, a bit, a spindle section of a bottom-hole motor, power sections of a screw bottom-hole motor, assemblies of rigid and flexible pipes, as well as a device for regulating the axial load, are installed on a test bench. Bench tests are carried out according to modelled programs of possible emergency or non-emergency operating modes of the assembly, both as a whole and of the separate elements.

Abstract: A method of a drilling string assembly for drilling small-diameter branched channels, including installation of operating elements arranged in a dynamically perturbed section of a loaded part of the drilling string. Moreover, a drilling string assembly, comprising oscillators arranged as coupled oscillators, a bit, a spindle section of a bottom-hole motor, power sections of a screw bottom-hole motor, assemblies of rigid and flexible pipes, as well as a device for regulating the axial load, are installed on a test bench. Bench tests are carried out according to modelled programs of possible emergency or non-emergency operating modes of the assembly, both as a whole and of the separate elements.