دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to pass from one point throughout a system and back to me starting point. For example, drilling fluid is circulated out of the suction pit, down the drill pipe and drill collars, out the bit, up the annulus, and back to the pits while drilling proceeds.

v: To cycle drilling fluid through the drill string and wellbore, returning to the mud pits. This operation is carried out during drilling and is also used to condition the mud while drilling is suspended.

establishing flow down the tubing or drill pipe and up the annulus. Reverse circulating involves injecting down the annulus and up the drill pipe.