دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to flare the end of a cylindrical object so that it resembles the bottom of a bell.

n: a hole shaped like a bell, larger at the top than at the bottom. A bell hole may be dug beneath a pipeline to allow access for workers and tools.

n: a short length of pipe (a nipple) installed on top of the blowout preventer. The top end of the nipple is flared, or belled, to guide drill tools into the hole and usually has side connections for the fill line and mud return line.

a funnel shaped pipe at the top of the casing that guides tool string entry and may have a side port for fluid pumping.

bell guide.

n: a device made up on an overshot to lengthen it so that it can pass over the damaged top of a fish and securely engage an undamaged area of the fish. See overshot. External line-up clamps are usually used on pipe with a diameter of 8 inches (20 centimetres) or less. Compare internal lineup clamp.

n: the added nipple between the body of bell socket and the top joint