دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a highly compressible. highly expansible mixture of hydrocarbons with a low specific gravity and occurring naturally in a gaseous form. Besides hydrocarbon gases, natural gas may contain appreciable quantities of nitrogen. helium. carbon dioxide. hydrogen sulphide. and water vapour. Although gaseous at normal temperatures and pressures, the gases making up the mixture that is natural gas are variable in form and may be found either as gases or as liquids under suitable conditions of temperature and pressure.

n: A naturally occurring mixture of hydrocarbon gases that is highly compressible and expansible. Methane [CH4] is the chief constituent of most natural gas (constituting as much as 85% of some natural gases),with lesser amounts of ethane [C2H6], propane [C

methane, CH4;plus some short chain hydrocarbons (ethane, propane, butane) that may be in gasseous state at standard conditions.