دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the threaded and shouldered joint used in rotary drilling to join the various components of the drill stem.

v: see make hole.

n: The process that bit crush rock at bottom hole then deepen the hole.

n: see rotating head.

n: The equipment be used to seal the annular space around the kelly in the drilling process.

n pl: those parts of the drilling or workover rig that are designed to turn or rotate the drill stem and bitswivel, kelly, kelly bushing, master bushing, and rotary table.

n: The components be used to drive the drill string and bit when drilling and workover.

n: The equipments be used to drive the drill string and bit when drilling and workover.

n: a sealing device used to close off the annular space around the kelly in drilling with pressure at the surface, usually installed above the main blowout preventers. A rotating head makes it possible to drill ahead even when there is pressure in the annulus that the weight of the drilling fluid is not overcoming;the head prevents the well from blowing out. It is used mainly in the drilling of formations that have low permeability. The rate of penetration through such formations is usually rapid.

n: The equipment be used to seal the annular space around the kelly in the drilling process.

a circulating connection that allows pipe rotation. Used in cementing with non top-drive rigs.

n: The operation that triping and rotate simultaneously drill string and circulating the drilling fluid.

n: any metering device for which the meter pulse output is derived from mechanical rotation as driven by the flowing stream.

the rate of penetrating while rotating the pipe.

n: A downhole tool which has minor interspace with borehole,usually be fixed on the drill string.