Which type of drilling equipment is often required for deep hole drilling?

The type of drilling equipment most often required for deep hole drilling is the rotary drill. This type of drill utilizes a rotational motion combined with a downward force to penetrate deep into the earth. The rotary drill is particularly effective for deep drilling applications because it can maintain high torque levels and effectively remove cuttings from the wellbore, which is essential for managing the drilling process at significant depths.

Percussion drills, while they can be used for some drilling applications, are primarily designed for breaking hard materials by striking them rather than drilling deep holes efficiently. Hand drills and light-duty drills are typically suited for shallow drilling tasks and are not designed to manage the complexities and demands associated with deep drilling operations.