CNG Solutions for Internal Combustion and Gas Engines

Compressed Natural Gas

The Main Types Of Natural Gas

• Natural Gas: This is pipeline natural gas delivered through municipal systems. It is primarily CH₄ with small amounts of ethane (C₂H₆) and other        hydrocarbons, offering a calorific value of approximately 8000–8500 kcal/Nm³.
• CNG (Compressed Natural Gas): This is natural gas that has been compressed and transported in tank trucks. Its composition is the same as pipeline natural gas.
• LNG (Liquefied Natural Gas): A more advanced form of CNG, LNG is natural gas that has been cooled and pressurized to become a liquid. It maintains the same composition as natural gas.
• Shale Gas and Combustible Ice: These unconventional sources contain higher CH₄ levels compared to conventional natural gas. Shale gas is found in deep shale layers, while combustible ice is located in deep-sea deposits. Both face challenges related to current extraction and transportation technologies but hold significant future potential.
• Wellhead Gas: Also known as oilfield associated gas, this is natural gas extracted from oil fields. Its composition varies but generally includes 50-80% CH₄, 20-40% ethane and propane, around 5% higher hydrocarbons, and about 10% inert gases like N2 and CO₂, with some H₂S.