دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the drill stem downslip abruptly because of the false of brake or operate miss

n: 1. a form of resistance butt welding used to weld wide, thick members or members with irregular faces together, and tubing to tubing. 2. in pipeline construction, a welding technique in which low voltage is applied to each pipe joint while the ends are in light contact. This contact produces a rapid arcing, called flashing. After the pipe ends have been adequately heated, the current is abruptly increased, and die pipe joints are brought together rapidly and forcefully. The current is then reduced, excess flash material in the pipe is cleared. and the weld is completed.

n: the treating of inclination, collapse and reaptly drilling, circulation loss, water intrusion or gas intrusion, touching resistance or sticking, the failure of drilling fluid circulation, the worsen of fluid, bit bouncing or bit jumping. All the time o

production technical limits.

n: a rapid increase in pressure downhole that occurs when the drill stem is lowered rapidly or when the mud pump is quickly brought up to speed after starting.

n: The downhole pressure increase abruptly caused by quick tripping or high starting rate of drill pump.

n: a rapid increase in pressure downhole that occurs when the drill stem is lowered too fast or when the mud pump is brought up to speed after starting.

v: The downhole pressure increase abruptly caused by quick tripping or high starting rate of drill pump.

v: 1. to cut the top or end from. 2. to terminate abruptly.