دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: The operation that joins the driving stem to pick up drill stem and circulate the drilling fluid when touch sticking

n: which have something to do with the time ,including actual bit on bottom time,round trip time,backreaming
and reaming time.,change bit time,change joint time.

n: see backreaming .