Inertial Constraint Induced Drilling Device for Torque Control

The patent employs a vibration pick-up device that generates controlled vibrations transmitted through the drill string to the drill bit. These vibrations create dynamic impact forces that enhance drilling penetration without requiring additional fluid power systems. The vibration-based mechanism converts mechanical energy from the drill string rotation into effective drilling force, eliminating the need for separate hydraulic power units while reducing overall energy consumption.

The invention replaces the fluid power (hydraulic) system with a purely mechanical vibration-based system. Instead of using hydraulic actuators to provide drilling force, the patent uses a vibration exciter and transmission mechanism that converts rotational motion into vibrational motion, which then translates into impact forces at the drill bit. This mechanical substitution eliminates complex hydraulic components and reduces energy consumption while maintaining drilling effectiveness.

The vibration pick-up device generates controlled vibrations that are transmitted through the drill string to enhance drilling penetration while maintaining system stability. The vibrations create dynamic impact forces that reduce sticking and improve hole cleaning without causing excessive drill string vibration or borehole instability. The controlled vibrational regime enhances drilling force while preserving drilling stability and borehole quality.

By replacing the fluid power system with a mechanical vibration system, the patent eliminates the instability issues associated with hydraulic pressure fluctuations and fluid injection. The mechanical vibration transmission provides more stable and predictable drilling forces, leading to improved drilling stability and better borehole quality without the complications of fluid-power-induced disturbances.

The vibration pick-up device generates controlled vibrations that create dynamic impact forces to enhance drilling penetration. These vibrations are transmitted through the drill string in a controlled manner, providing intermittent impact loading rather than continuous high static forces. This vibrational approach improves drilling progress while reducing cumulative stress on the drill bit, thereby extending drill bit durability compared to conventional high-impact methods.

The vibration system operates by applying periodic vibrational forces rather than continuous impact loads. This periodic action allows the drill bit to experience controlled cycles of impact and recovery, preventing excessive cumulative damage while maintaining effective drilling penetration. The periodic vibrational loading enhances drilling progress while preserving drill bit durability through controlled stress cycles.