دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: A kind of inside blowout preventer installed at the top of drilling string when blowouting.

n: a drill pipe inside blowout preventer that is installed on top of the drill stem when the well is kicking through the drill stem. It is stabbed in the open position and then closed against the pressure. The valve that closes is dartshaped, thus the name.

n: see inside blowout preventer:

abbr: inside blowout preventer.

n: anyone of several types of valve installed in the drill stem or in a top drive to prevent highpressure fluids from flowing up the drill stem and into the atmosphere. Flow is possible only downward, allowing mud to be pumped in but preventing any flow back up the stem. Also called an internal blowout preventer.

n: A valve in the drillstring that may be used to prevent the well from flowing uncontrollably up the drillstring.

a valve installed inside the drill stem to prevent flow up the inside of the pipe.

abbr: an inside blowout preventer.

n: see inside blowout preventer.

n: see inside blowout preventer.

n: A valve in the drillstring that may be used to prevent the well from flowing uncontrollably up the drillstring.

n: inside blowout preventer (so named by the company that invented it- TX Iron Works).