DAMPER OF LONGITUDINAL AND TORSIONAL VIBRATIONS Russian patent published in 2002 - IPC

FIELD: drilling of oil and gas wells, particularly, devices for damping of vibrations arising in cutting of rocks. SUBSTANCE: essence of the invention consists in that system of damper flexible members is made in the form of concentric pipes of different diameters and rigidly interconnected successively and tightly. In this case, system is also tightly connected with shaft and body. A throttling device is placed in shaft inside. EFFECT: simplified design and higher operating reliability of damper in drilling wells. 1 dwg