دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a rotating shaft on the opposite side of the drawworks from the drillers console that gets power from one of the transmissions and sends it to the rotary table. It sits inside its own housing, which may be a part of the main drawworks frame or may be detachable for transportation.

n: a worker on a drilling or workover rig, subordinate to the driller, whose primary work station is on the rig floor. On rotary drilling rigs, there are at least two and usually three or more rotary helpers on each crew. Sometimes called floorhand, floorrnan, rig crewman, or roughneck.

n: a steel-reinforced, flexible hose that is installed between the standpipe and the swivel or top drive. It conducts drilling mud from the standpipe to the swivel or top drive. Also called the kelly hose or the mud hose.

n: a reinforced flexible tube that conducts drilling fluid from the standpipe to the swivel. also calledkelly hose or mud hose.

the connection from the mud pump to the stand pipe. Also called the mud hose or kelly hose.

n: a type of mechanical jar whose jarring force is actuated and determined by rotating the work string;the more torque, the harder the jar. See mechanical jar.

n: on a rotary table, a steel pin, often spring-loaded, that, when engaged, fits into one of several notches machined onto the perimeter of the rotary assemblys turntable. When engaged, the lock prevents the turntable from turning.

n: a pump that moves fluid by positive displacement, using a system of rotating vanes, gears, or lobes. The vaned pump has vanes extending radially from a rotating element mounted in the casing. The geared rotary pump uses oppositely rotating meshing gears or lobes.

n: It can rotary along the drill string then cut and broaden the borehole face,and maintain the packed hole.

n: a length of pipe whose bottom edge is serrated or dressed with a hard cutting material and that is run into the wellbore around the outside of stuck casing, pipe, or tubing to mill away the obstruction. Also called a bum shoe. See washover pipe.

n: the cutting shoe fitted to the lower end of washover pipe and dressed with hard-surfaced teeth or tungsten carbide.

n pl: see slips.

n: a solenoid that imparts rotary motion to a shaft.