CHAPTER 16 – Typical Composition of Natural Gases

摘要: Natural gas consists of at least 95% hydrocarbons belonging to the paraffin series. The remainder are nonhydrocarbon gases, such as nitrogen, carbon dioxide, and, sometimes, small quantities hydrogen sulfide. presence sulfur compounds, mercaptans and sulfide, responsible for odors sometimes associated with natural gases. In some areas, Texas, helium may also be present. Carbon dioxide sulfide referred acid gases they can form acids on contacting water. Gases nitrogen inert partially or completely saturated water vapor, is a colorless, odorless mixture unless principal present in methane, followed by ethane, propane, butanes, heavier components. Upon migration, preferentially adsorbed rock minerals, mainly clays. composition produced from an oil reservoir will vary various operating oil/gas separator pressures.