Gas Compression
Sour Gas Compressor Lubricants
NEXT Lubricants supplies compressor lubricants for sour gas compression across upstream gas gathering, gas processing and sweetening, acid gas injection and sulphur recovery applications. Product selection is based on H₂S concentration, CO₂ content, overall gas composition and the operating conditions of the specific compression duty.
Knowledge
Lubrication Considerations for Sour Gas Compression
H₂S Reactivity with Lubricant Components
Hydrogen sulphide can react with certain lubricant additives and base stock components under operating conditions, particularly at elevated H₂S concentrations encountered in acid gas injection and high-H₂S gathering applications. Lubricant compatibility with H₂S across the specific concentration range of the application is a primary selection criterion — the extent of this interaction varies significantly between mildly sour gathering gas and concentrated acid gas streams.
Combined H₂S & CO₂ Effects
Sour gas streams typically contain both H₂S and CO₂, which together create a more aggressive environment than either gas alone. CO₂ contributes to acidic conditions within the compression system when moisture is present, influencing corrosion risk at compressor components and the demands placed on the lubricant's corrosion inhibition performance across the operating cycle.
Variable H₂S Concentration Across Applications
H₂S concentration varies considerably across sour gas compression duties — from trace levels in mildly sour pipeline gas through to very high concentrations in acid gas injection streams. Lubricant selection must account for the specific H₂S level at the point of compression rather than applying a single product across all sour gas duties regardless of gas severity.
products
Sour Gas Compressor Lubricants
NEXT GPL MIN
Wet Sour Gas / Cylinder & Turbocompressor Lubricant
Base Oil: Mineral
ISO Range: 32 – 680
NEXT GPL PAG-WS
Sour Hydrocarbon / High-Pressure Compression Lubricant
Base Oil: PAG (EO/PO)
ISO Range: 32 – 320
NEXT GPL PAG-EO
Heavy Sour Hydrocarbon / Low-Dilution Compression Lubricant
Base Oil: PEG
ISO Range: 22 – 150
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Related Applications
Explore Other Gas Compression Applications
Sour gas compression is one part of NEXT Lubricants’ gas compression product range. We also supply lubricants for the following applications.
CO₂ Compressor Lubricants
Lubricants for carbon dioxide compression in carbon capture, industrial CO₂ supply, EOR injection and process gas applications.
Hydrocarbon Gas Compressor Lubricants
Lubricants for process gas compression in oil refining, gas processing and petrochemical applications across a range of hydrocarbon gas streams.
Petrochemical Gas Compressor Lubricants
Lubricants for process gas compression in petrochemical manufacturing, where gas streams include reactive and specialty components under demanding operating conditions.
Biogas Compressor Lubricants
Lubricants for biogas and biomethane compression where H₂S content and variable gas composition create similar demands to sour gas handling.