دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the smooth, uninterrupted circulation of drilling fluid down the drill stem, out the bit, up the annular space between the pipe and the hole, and back to the surface. Compare reverse circulation.

n: the circulation that the fluid from the the volume, bit and annular and reture to the ground evenly and perpetual.


circulation down the tubing and up the annulus.