DRILL STRING DAMPER

摘要

Drill string damper has body placed between switcher for connection to drill string and bit-sub in which shaft is installed with shell-type damper placed on it, this consists of rubber filler with elastic shell placed between the pistons, and unit for transfer of torque as cylindrical shell springs. Besides that between the shell-type damper and unit for transfer of torque spring is in addition installed, this rests on floating piston that is installed with possibility of interaction with bit through intermediate clutch and bit-sub.