دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: Efflux velocity decreases continuously due to diffusional effect and resistance of submerged fluid. Decreasing coefficient of jet velocity is the ratio of the circulation velocity at any point of center line of jet and circulation velocity at outflow poin

n: The exit velocity of the drilling fluid after it accelerates through bit nozzles.

n: The working regime that determining hydraulic parameters and delivery capacity
according to maximum jet velocity in jet drilling .