دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see packed hole assembly, packed pendulum assembly.

n: a bottomhole assembly in which pendulum-length collars are swung below a regular packedhole assembly. The pendulum portion of the assembly is used to reduce hole angle. It is then removed, and the packed-hole assembly is run above the bit. See packed-hole assembly. pendulum assembly.

n: a type of holebore bottom make up of strings. Jioned a section of collar as pendulum on the packed hole strings.

n: a bottomhole assembly composed of a bit and several large-diameter drill collars and stabilisers placed to allow the bottom drill collar to bend toward the vertical. The assembly works on the principle of the pendulum effect and is used to decrease drift angle. See pendulum effect.

n: a BHA (q.v.) that is designed to drop angle by allowing the drill collars towards the low side of the hole.

n: see pendulum assembly.

n: see pendulum assembly.

n: A kind of pendulum assembly,which is consist of bit and big diameter columnar
drill collar.