Dynamics of the ground hydraulic hammer-pulsator

Abstract

Abstract Various vibration mechanisms are used as vibration exciters for the beneficial use of vibration. By the type of drive, vibration mechanisms are divided into mechanical, electromechanical, hydraulic, pneumatic, vacuum-compression, electromagnetic and magnetostrictive. They are designed to excite forced vibrations that provide the required technological effect. Vibrators and vibrating hammers are currently used for vibration drilling of shallow wells in soft rocks, for vibration-rotating drilling in rocky and semi-rock formations, for driving and removing casing pipes and eliminating accidents associated with stuck drilling at the bottom of the well. The structural scheme of the ground hydraulic hammer-pulsator is designed for drilling seismic wells, the striker of which is a two-stage piston. The piston is connected to the atmosphere; the large piston is for studying the influence of the hydraulic hammer-pulsator on the drilling efficiency is equipped with a valve that closes the channels of the large piston in the upper position, and opens - in the lower position. A schematic diagram of a surface hydraulic hammer is shown to study the effect of a hydraulic hammer-pulsator on the drilling efficiency.