دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: refer to packed hole assembly.

n: annular that between packed hole assembly ( PA ) and hole wall.

n: a BHA (q.v.) that is designed to maintain inclination and direction of the wellbore.

n: see packed hole assembly, packed pendulum assembly.

n: 1.in pendulum drill-assembly, the position of stablizer haves something to do with the size of collar, drilling pressure, angle of inclination and holebore interspace. 2. in packed hole assembly, there is three stablizers on the drilling collar.

n: A kind of packed hole assembly, which is consists of joining full diameter round collar above drill bit,then joining with square drill collar.

n: A kind of packed hole assembly.It can join directly two square collars,or join role-wheel amplifier in the middle of two square collars.