Conventional and overbalance well drilling practices have been always the main style to reach energy and hydrocarbon resources underground. But as time advances, the conventional energy resources in conventional settings are becoming scarcer. That makes reaching new energy resources a challenging job using conventional ways of drilling. In other words, more resources will be needed to explore deeper in the earth in reduced tolerability, and strict conditions (e.g., Narrow Formation pressure/Fracture pressure window). These strict conditions will need more than the conventional drilling approaches in order to pass through them safely and optimally. That was the rising argument of unconventional drilling techniques as Under Balance Drilling (UBD) and Managed Pressure Drilling (MPD) Techniques.