دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: US organisation that sets standards and specifications for ships and ship equipment manufactured in the United States. The organisation also makes inspections during offshore rig construction and conducts periodic surveys to ensure that requirements for classification are maintained. Its official publications are Records of the American Bureau of Shipping and ABS Activity Report. Address: 2 World Trade Centre;106th floor;New York, NY 10048;(212) 839- 5000.

n: one of several valves installed at the wellhead to prevent the escape of pressure either in the annular space between the casing and the drill pipe or in open hole (i.e., hole with no drill pipe) during drilling or completion operations. Blow- out preventers on land rigs are located beneath the rig at the lands surface;on jackup or platform rigs, at the waters surface;and on floating offshore rigs, on the seafloor. See annular blowout preventet;ram blowout preventer:

n: a machine for raising, lowering, and revolving heavy pieces of equipment, especially on offshore rigs and platforms.

n: A kind of machine used to fluctuating heavy equipment. It can rotate itself. Mainly refers to the hoist in ODP.

dynamically positioned.

v: to close a ram blowout preventer around the drill pipe when the annular preventer has previously been closed to offset the effect of heave on floating offshore rigs during well-control procedures.

an offshore rig with retractable steel legs that can be placed on the ocean floor and raise the rig above the water line.

n: a feature on four-pin kelly bushings installed on floating offshore rigs (which employ a conventional rotary table assembly) that secures the kelly bushings pins to the master bushings corresponding drive holes so that the kelly bushing will not separate from (lift off of) the master bushing as the rig heaves up and down with wind and wave motion. See kelly bushing, master bushing.

n: any drilling rig that is located on dry land. Compare offshore rig.

n: the rig that uses drilling on the land.

n: any of various types of drilling structures designed for use in drilling wells in oceans, seas, bays, gulfs, and so forth. Offshore rigs include platforms, jack up drilling rigs, semi-submersible drilling rigs, submersible drilling rigs, and drill ships. Compare land rig.

n: 1. a worker on an offshore rig who handles the equipment and supplies that are sent to the rig from the shore base. The head roustabout is very often the crane operator. 2. a worker who assists the foreman in the general work around a producing oilwell, usually on the property of the oil company. 3. a helper on a well servicing unit.

n: an employee of the drilling contractor who carries out general labouring work on the rig.

general laborer in the field.