Well Control is the process of managing subsurface pressures to keep formation fluids contained within the wellbore. During drilling, operators use drilling mud to balance the pressure exerted by underground formations. If formation pressure exceeds the hydrostatic pressure of the mud, formation fluids can enter the wellbore—this is called a “kick.” If not handled properly, a kick can... https://medium.com/@vectechs3/well-control-essential-techniques-for-safe-drilling-and-blowout-prevention-60933037d0f3