Well Engineering is basically based on pore pressure, kick tolerance, casing functions, casing design and cementing. It is sometimes related to drilling and petroleum engineering. Well Engineering is basically based on pore pressure, kick tolerance, casing functions, casing design and cementing. It is sometimes related to drilling and petroleum engineering. Study of formation pressures is important for the safe planning of a well. Values of formation pressures are used to design safe mud weights to overcome fracturing the formation and prevent well kicks.