دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: under ESA, killing, capturing, hunting, harassing, or modifying or destroying the habitat so that breeding, feeding, or sheltering of a species is significantly impaired. Consequently, clearing an area that is the actual or potential habitat of an endangered or threatened species could constitute a violation of the act.

items of well construction that have salvage value, ordinarily capitalized on taxes.

n: a large, flat-bottomed vessel divided into compartments and used to carry crude or fuel oil.

n pl: the settlings in the bottom of a storage tank. See basic sediment and water, bottoms.

the near solid or highly viscous residuals at the bottom of an oil storage tank, generally composed of a large amount of paraffins, silt, heavy ends, etc.

n: a structure erected to contain petroleum or a petroleum-fed fire in case a storage vessel ruptures or collapses. Usually a dike is built around the petroleum storage tank and a steel or stone wall is put up between the prime movers and the oil pumps in a pipeline pumping station. Also called fire wall.

n: an open or closed vessel of known capacity designed for the accurate determination of the volume of liquid delivered into or out of it during a meterproving operation.

n: the person who measures a tank at various levels to see how much it will hold.

n: a ship designed to transport oil, LPG, LNG, or SNG. Tankers whose capacity is 100,000 deadweight tons (90,720 deadweight tonnes) or more are supertankers, either very large crude carriers or ultralarge crude carriers. Also called a tank ship.

n: 1. a tool for forming an internal screw thread. It consists of a hardened tool-steel male screw grooved longitudinally so as to have cutting edges. 2. a hole or opening in a line or vessel into which a gauge or valve may be inserted and screwed tight. v: 1. to form a female thread by means of a tap. 2. to extract or cause to flow by means of a bore- hole, e.g., to tap a reservoir.

a valve on a line.

n: in tank sampling, withdrawing liquid samples through sample taps, at least three of which should be placed equidistant throughout the tank height and extending at least 3 feet (1 metre) inside the tank shell. A standard V4- inch (O.64-centimetre) pipe with suitable valve is satisfactory.