دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the phenomenon of mutual impection that occurs to fluid and piston port , which caused by the fluid in pump is incontinual or the action of fluid and piston is not synchronous.

n: see jet impact force.

n: 1. a hydraulic device operated by a centrifugal pump used to clean the mud pits, or tanks, and to mix mud components.2. in a perforating gun using shaped charges, a highly penetrating, fast-moving stream of exploded particles that forms a hole in the casing, cement, and formation.

n: To drill soft, unconsolidated, usually shallow formations by eroding the rock below the bit by hydraulic impact loading alone. Though not as common as in the past, a bit may be fitted with asymmetric nozzles, one large and two or more small nozzles. If