Estimation of the Mechanical Oscillatory Power of the Drill String for Rational Sonic Drilling

Efficiency analysis of sonic drilling wells and the choice rational operational modes drill bit vibration loading to increase rate penetration was carried out. The are studied on basis an assessment power process with a cavitation hydrovibrator. This paper presents approach calculating mechanical oscillatory bit. uses developed mathematical model dynamics hydraulic vibrator string. describes interaction string longitudinal vibrations mud oscillations at regime self-oscillations fluid flow in vibrator. has been determined for specific Rational operation hydrovibrator efficient conversion stationary into ensuring high evaluated.