دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a metric system unit for the measure of volume. Literally 1/1000th of a litre. In drilling-mud analysis work, this term is used interchangeably with cubic centimeter(cc). One quart is about equal to 946 ml.

n: one-thousandth of a volt.

n: (MSHA) a US government agency that evaluates research in the causes of occupational diseases and accidents. It is responsible for administration of the certification of respiratory safety equipment. Address: 4015 Wilson Blvd.;Arlington, VA 22203;(703) 235-1385.

n: a kinds of varying degree fibric material made of mineral fibre.

n: the velocity that exists at the lowest operating flow rate, excluding those rates that occur infrequently or for periods of less than five minutes.

n: a form of joint venture very similar to an oil and gas joint operating agreement. Profits, losses, operations, and ownership are all shared, and the partners are jointly as well as severally (separately) liable.

n: the pressure at which a gas injected into a reservoir vaporises hydrocarbons from crude oil to form a miscible transition zone between the gas and the crude oil. This liquid transition zone moves reservoir oil toward production wells. Miscibility pressure depends on the characteristics of the gas and the temperature and gravity of the reservoir crude oil. For carbon dioxide, hydrocarbon vaporisation begins at pressures between 1,000 pounds per square inch and 2,000 pounds per square inch at temperatures below 200�F with oils above 30. API. Several hundred additional points per square inch are required to reach the optimum miscibility pressure, at which sufficient hydrocarbons are vaporised to produce a profitable amount of oil.

n: a method of enhanced recovery in which various hydrocarbon solvents or gases (such as propane, LPG, natural gas, carbon dioxide, or a mixture thereof) are injected into the reservoir to reduce interfacial forces between oil and water in the pore channels and thus displace oil from the reservoir rock. See chemical flooding. gas injection. micellar-polymer flooding.

injection of a large volume of gas from an injection well where the gas is designed to lower the viscosity of the oil and help displace it towards the wellbore.