دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a part of the brake mechanism consisting of a flexible steel band lined with a material that grips a drum when tightened. On a drilling rig, the brake band acts on the flanges of the drawworks drum to control the lowering of the travelling block and its load of drill pipe, casing, or tubing.

n: Bourdon plate whose inner surface is installed with several brake blocks at definite interval.

n: The mechanism which is used to brake cylinder controlled by the load of RIH. It achieves the goal of bit load controlling, drill tool feeding, running speed controlling and drill tool suspending. Consisted by brake and assist brake.

n: The spin table is controlled to be convenient for removing drill bit and holding reactive torque when using mud motor.