دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: see breakout cathead, cathead. makeup cathead.

n: The general form of address of mechanized cathead. Used for winding wire line automatically and draw the tongs to make up and breakout.

n pl: the tongs latched on the drill pipe joint hanging in the totary by the slips, used to keep the pipe from turning as the makeup or breakout tongs (the lead tongs) apply torque to make up or break out the tightened tool joint connection. Compare lead tongs.

n: A tong suspended in the derrick, normally on the drillers right, used to hold box end of the tool joint while the pin end is loosened and unscrewed. Also called a make-up tong, as it is moved to pin end to tighten the joint to the recommended torque after

n pi: tongs that are used to start unscrewing one section of pipe from another section, especially drill pipe coming out of the hole. Compare makeup tongs. See also tongs.

n: See tong.

n: on a drilling rig, a large metal bin that usually holds a large amount of a certain mud additive, such as bentonite, that is used in large quantities in the makeup of the drilling fluid. Also called a P-tank.

n: a spool-shaped attachment on the end of the catshaft. around which rope for hoisting and moving heavy equipment on or near the rig floor is wound. See break- out cathead, makeup cathead.

n: A spool-shaped extension of the drawworks shaft used to lift heavy equipment around the rig and make-up or break-out the drill pipe.

n: on a spinning chain, a piece of fiber rope (soft line) that is attached to the end of the chain that is wrapped around the tool joint. When the makeup cathead pulls the chain off the drill pipe, a rotary helper uses the guideline to control the chains movement.

(pronounced Iced") n pi: the pipe tongs suspended in the derrick or mast and operated by a chain or a wire rope connected to the makeup cathead or the break- out cathead. Personnel call the makeup tongs the lead tongs if pipe is going into the hole;similarly, they call the breakout tongs the lead tongs if pipe is coming out of the hole. Compare backup tongs.

n: a pipe tong suspended in the dercick, normally on the left of the driller, used when coming out of the hole to break the connection operated through wire line tied to breakout cathead. Inthis operation it is on pin end of joint to be broken. During makeup

n: A clutched, rotating spool that enables the driller to use the drawworks motor to apply tension to a chain connected to the makeup tongs. This tensioned chain, acting at right angles to the tong handle, imparts torque to the connection being tightened.

adj: added to a system (e.g., makeup water used in mixing mud).

n: the working that hasten or unscrew the screw.