دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a paraffin hydrocarbon, C4H10 , that is a gas in atmospheric conditions but is easily liquefied under pressure. It is a constituent of liquefied petroleum gas. See commercail butane, field-grade butane, normal butane.

a four carbon chain alkane, may be a liquid in the reservoir, but vaporizes as pressure is released. Part of the natural gas liquid components.

n: a paraffin hydrocarbon, C2H6;under atmospheric conditions, a gas. One of the components of natural gas.

a two carbon chain alkane, C2H6. A gas under standard conditions of temperature and pressure.

n: a paraffin hydrocarbon, C9H20, that is liquid at atmospheric conditions. Its boiling point is about 303.5�F (150.8�C) at 14.7 pounds per square inch (332.5 kilopascals per metre).

n: a saturated aliphatic hydrocarbon having the formula CnH2n+2 (e.g., methane, CH4;ethane, C2H6). Heavier paraffin hydrocarbons (i.e., C18H38) form a wax-like substance that is called paraffin. These heavier paraffins often accumulate on the walls of tubing and other production equipment, restricting or stopping the flow of the desirable lighter paraffins.

normal or straight carbon chain alkanes with carbon chain lengths of C18+. The alkanes in this range solidify at temperatures from 80oF to over 200oF. Paraffin is amorphous but may appear to have structure in slow growth examples.

n: see paraffin. paraffin inhibitor n: a chemical that, when injected into the wellbore, prevents or minimises paraffin deposition.

n: (POI) an interval in the production tubing string where heavy paraffin hydrocarbons are deposited on the inside walls of the tubing. Below or above certain temperatures, depending on the characteristics of the paraffins, paraffin will not form.

n: the gas produced from certain petroleum refinery operations (such as cracking or reforming). The composition of refinery gas varies in accordance with the process by which it is produced, but it consists essentially of the same paraffin hydrocarbons as natural gas plus olefins (propylene, ootylene, and ethylene) not found in natural gas.