دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: (UIC) a program developed under SDWA to prevent injection well contamination of underground sources of drinking water. The UIC program divides injection wells into five classes (that range from common septic tanks to hazardous waste injection wells) and establishes specific requirements for construction, casing and cementing, plugging and abandonment, types of substances that can be injected, volume and pressures that can be injected, and mechanical integrity of the well.

n: the amount by which the actual volume that has passed through the meter is less than the indicated volume registered by a meter. See absolute error.

under production, short of the allotment or contract volume, that must be accounted for in a contract.

n: the amount by which the indicated volume registered by a meter is less than the actual volume that has passed through the meter. Determined by means of a suitable standard device. Compare overregistration.

n: product in which spot samples from top, upper, middle, lower, and outlet agree within the precision of the laboratory tests. Similarly, in pipe- line transfers, spot samples taken at 1, 20, 50, 80, and 99 percent of the total volume agree within the precision of the laboratory tests.

n: the geologic principle that the processes that are at work today on the earth are the same as, or very similar to, the processes that affected the earth in the past. The principle was formulated in 1785 by James Hutton, a Scottish geologist. It became an accepted doctrine with the publication in 1830 of English geologist Charles Lyells book Principles of Geology. Also called gradualism. Compare catastrophism. spills, 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. United States Geological Survey (USGS)

n: the value of a quantity conventionally accepted as having a numerical value of 1. The unit of measurement of a quantity is fixed in order to make quantitative comparison possible between different values of this same quantity.

n: (USCG) an agency of the United States Department of Transportation that establishes regulations for offshore vessels and approves standards for plan approval, construction, operation, and inspection of the hull, machinery, electric systems, industrial systems, and safety and lifesaving equipment of mobile offshore drilling units. The agency conducts rig stability tests, awards the original certification of the rig, and conducts annual inspections. It also establishes manning and personnel licensing requirements and investigates casualties. Address: 2100 Second Street SW;Washington, DC 20593;(202) 267-2229 or (202) 366-4000.

n: a series of volumes that is a published compilation of all the laws passed by Congress.

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.