دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device used to restrict fluid flow to one direction. It consists of a polished sphere, or ball, usually of metal, and an annular piece, the seat, ground and polished to form a seal with the surface of the ball. Gravitational force or the force of a spring holds the ball against the seat. flow in the direction of the force is pre- vented, while flow in the opposite direction overcomes the force and unseats the ball.

n: a long, cylindrical container fitted with a valve at its lower end, used to remove water, sand, mud, drilling cuttings, or oil from a well in cable-tool drilling.

n: A long, cylindrical container, fitted with a valve at its lower end, used to remove water, sand, mud, oil, or junk and debris from a well.

a hollow tube with a trap door or ball seat, run on wireline, which can be used to spot or remove solid material from a well bore.

n: The valve in the bottom of bailer. The valve is opened when the bailer in the bottom of well and closed when the bailer raises.

n: The rarefication in the vacuum degasser when the volume of drilling fluid is balanced.

n: a device for regulating the level of fluid in a tank. It consists of a valve connected to a hollow floating ball that, by rising or falling, shuts or opens the valve.