دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (USFWS) a federal service that oversees commercial fishing investigations, fishing research, fishing statistics, sport fishing, and other areas related to the fishing industry. It also conducts wildlife research, enforces federal statutes and regulations applying to migratory birds, maintains the official list of threatened or endangered species, acquires habitats for threatened or endangered species, operates the national refuge system, manages predator and rodent control work, evaluates the impact of offshore development on fish and wildlife, develops programs to protect fish and wildlife from oil spill, coordinates individual and state efforts to rescue and rehabilitate oiled birds, and administers federal aid programs. Address: MS 634 Arlington Square, 1849 C Street NW;Washington, DC 20240;(703) 358-1714.

n: (USGS) a federal agency within the Department of the Interior established in 1879 to conduct investigations of the geological structure, mineral resources, and products of the United States. Its activities include assessing onshore and offshore mineral resources;providing information that allows society to mitigate the impact of floods, earthquakes, landslides, volcanoes, and droughts;monitoring the nations groundwater and surface water supplies and peoples impact thereon;and providing mapped information on the nations landscape and land use. Address: 12201 Sunrise Valley Drive;Reston, VA 20192;(703) 648-4000.

n: the combining of leased tracts on a fieldwide or reservoirwide scale so that many tracts may be treated as one to facilitate operations like secondary recovery. Compare pooling.

form an operating unit with a operating company from a group of wells in the same field.

n pi: the usual units of volume for petroleum measurement are the cubic metre, litre, imperial gallon, US gallon, or the barrel (42 US gallons, or 159Iitres).

n: in an ideal gas, a number equal to the pressure of the gas times its molar volume divided by its temperature. See molar volume, mole.

n: A kind of joint ,which can deliver the movement and power from one shaft to another shaft.

n: bleeding out the drill fluid ,water or other liquid in order to product the oil and gas.

n: see circulation valve. unloading a well n: removing fluid from the tubing in a well, often by means of a swab, to lower the bottomhole pressure in the wellbore at the perforations and induce the well to flow.

n: a special circulation valve that provides a way of equalizing tubing and annulus pressure. See also circulation valve.