دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

adv: 1. toward the stem of a ship or mobile offshore drilling rig. 2. behind. 3. farther aft than. See aft.

adv: on or in a ship, offshore drilling rig, helicopter, or production platform.

n: a system consisting of a beacon positioned on the seafloor to transmit an acoustic signal, a set of three or four hydrophones mounted on the hull of a floating offshore drilling vessel to receive the signal, and a position display unit to track the relative positions of the rig and the drill site. Monitoring of the display unit aids in accurate positioning of the rig over the site.

adv: toward or near the stem of a ship or offshore drilling rig.

n: the distance from the normal level of the sea surface to the bottom of the hull or base of an offshore drilling platform or rig.

n: The distance from normal sea level to drill platform when marine drilling.

the clearance between the highest water surface that occurs during the extreme environmental conditions and the underside of the deck.

n: a device that secures, or fastens, equipment. In producing wells with sucker rod pumps, a gas anchor is a special section of perforated pipe installed below the pump. It provides a space for gas to break out of the oil. In offshore drilling, floating drilling vessels are often secured over drill sites by large anchors like those used on ships. For pipelines, a device that secures pipe in a ditch.

n: Means of holding the deadline to the derrick or substructure. Usually this is the primary element of the weight indicator

a device with slips that holds equipment in the wellbore.

adv or adj: 1. at or toward the stem of a ship or an offshore drilling rig;abaft. 2.behind the ship or rig.

prep or adv: from side to side of a ship or offshore drilling rig.

n: the act of maintaining a floating offshore drilling rig on even keel, regardless of weather or load conditions.

n: the condition of a floating offshore drilling rig when ballast has been added.