دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a large, specially designed, self-propelled workover rig that is driven directly to the well site. Power from a carrier rigs hoist engine or engines also propels the rig on the road. While a carrier rig is primarily intended to perform workovers, it can also be used to drill relatively shallow wells. A carrier rig may be a back-in type or a drive-in type. Compare back-in unit, drive-in unit.

n: A kind of portable service machine. The derrick mask, drawworks, motor and other necessary additional service rig.

a self propelled drilling or workover rig.

n: the movement of drilling fluid out of the mud pits, down the drill stem, up the annulus, and back to the mud pits. See normal circulation, reverse circulation.

n: The movement of drilling fluid through the flow system on a drilling or workover rig. This circulation starts at the suction pit and goes through the mud pump, drill pipe, bit, annular space in the hole, flowline, fluid pits, and back again to the suction

a workover using a small diameter tubing inside the existing tubing. Usually done with a hydraulic workover rig or coiled tubing. Commonly used with a positive surface well pressure and seals on the smaller tubing in a live-well workover.

n: 1. the workers on a drilling or workover rig, including the driller, the derrickhand, and the rotary helpers. 2. any group of oilfield workers.

n: Consisted by operating force of drill crew or clean crew. Including driller, derrick hand and rotary helper.

a group of workers on a rig.

n: the employee directly in charge of a drilling or workover rig and crew. The drillers main duty is operation of the drilling and hoisting equipment, but this person is also responsible for downhole condition of the well, operation of downhole tools, and pipe measurements.

n: The employee of the drilling contractor who is in charge of the drilling rig and crew. His main duties are to operate the drilling equipment and direct rig-floor activities.

n: a driller, a derrickhand, and two or more helpers who operate a drilling or workover rig for one tour each day.

n: the teams and groups composed by drillers,derrick hands,drivesr and borers who are on duty for one time a day

n: a type of portable service or workover rig that is self-propelled, using power from the hoisting engines. The drivers cab and steering wheel are mounted on the same end as the mast support;thus the unit can be driven straight ahead to reach the wellhead. See carrier rig.

n: those workers on a drilling or workover rig who work primarily on the rig floor. See rotary Mlper.

n: the drilling crew or clean crew who work in the drilling platform alternately

n: a railing for guarding against danger or trespass. On a drilling or workover rig, for example, guardrails are used on the rig floor to prevent persons from falling;guardrails are also installed on the mud pits and other high areas where there is any danger of falling.

n: a workover rig. usually lightweight, that is specially built to run a string of 3/4-inch or 1-inch (1.9- or 2.54- centimetre) tubing. See macaroni string.

n: a special light weight type workover rig.