flow resistance(flow resistance quotient of the difference of air pressure between the two faces of a sheet of porous material by the volume velocity of airflow through the sheet Found on electropedia.orgAlexander Demidov)
route of least resistance(из книги Norman J. Hyne. Nontechnical Guide to Petroleum Geology, Exploration, Drilling & Production: Fluids such as water will always flow along the route of least resistance grafleonov)
kick tolerance(Kick Tolerance is the maximum allowable influx volume, for a known or assumed shut-in drill pipe pressure, which will not cause the formation to fracture when either the influx is at the bottom of the annulus or when it is circulated and expanded to the casing shoe by a constant bottom-hole pressure method. (Well Control Manual, Aberdeen Drilling Schools LTD) YMedentsii)