Definition - What does Residue Gas mean?
Residue Gas is the natural gas that is left after thorough and complete natural gas processing. This residue gas is free from impurities, moisture, natural gas condensates and is finally ready to be transported to the end user market through gas pipelines. In order to generate residue gas, the gas processing starts at the wellhead where the large debris, mud, moisture, NGL’s are removed and the gas is transported to processing facilities for further cleaning and filtration process. Residue gas is also known as pipeline quality dry natural gas.
Petropedia explains Residue Gas
Natural gas processing is a complex industrial process that involves thorough cleaning and filtering process of removing impurities such as moisture, debris, natural gas condensates, non-methane hydrocarbons, any liquids from raw natural gas and converting this raw natural gas to pipeline quality dry natural gas.
Residue gas is a final purified form of natural gas that is ready for sale and can be transported via pipelines for the end user markets. In natural gas processing facilities, this raw gas passes through various mechanic and chemical processes such as
- Condensate and Water removal process
- Acid gas removal process
- Sulfur treatment process
- Dehydration process
- Mercury removal and nitrogen rejection process
- Tail gas treating process, NGL recovery process, gas sweetening process, etc
Once all such processes are complete, a final dry natural gas or residual gas is obtained that is ready to be transported to the end user based on sale purchase agreement. The pricing for such gas is decided based on the quality of the gas, i.e., based on the BTU’s or the heat energy this gas will generate when it is burnt.