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.

n: a mechanical refrigeration system in which the refrigerant is absorbed by a suitable liquid or solid. The most CODlD1only used refrigerant is ammonia;the most commonly used absorbing medium is water. Compare compressionrefrigeration cycle.

n: English system buttress thread whose top angle is 29°. Mainly used to convey dynamic.

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.

n: The circulating fluid for drilling. It content the drilling fluid both in the wellbore and surface circulating system.

n: 1. in general, a substance added in small amounts to a larger amount of another substance to change some characteristic of the latter. In the oil industry, additives are used in lubricating oil, fuel, drilling mud, and cement. 2. in cementing, a substance added to cement to change its characteristics to satisfy specific conditions in die well. A cement additive may work as an accelerator, retarder, dispersant, or other reactant.

n: The agent put into the drilling fluid in order to change some performances of the drilling fluid or slurry.

a compound incorporated into a gas, liquid, or solid system to alter the properties for a particular purpose.

abbr: atmospheric diving system.