Gas Compression
Sour Gas Compression
Sour gas compression is one of the most demanding and safety-critical gas handling applications in the industry — natural gas or process gas containing hydrogen sulphide (H₂S) imposes strict requirements on materials, sealing systems and lubricant compatibility that go well beyond standard gas compression practice.
NEXT Lubricants supplies compressor lubricants for sour gas compression across upstream gas gathering, gas processing, acid gas injection and sulphur recovery applications, with product selection based on H₂S concentration, overall gas composition and the operating conditions of the installation.
Compression process
Sour Gas Compression — Process, Applications & Compressor Role
Compressors in sour gas service must contain a gas that is simultaneously flammable, toxic and corrosive across the full range of operating pressures and conditions encountered in production, processing and injection duties. The H₂S concentration, CO₂ content and overall gas composition vary significantly between applications — from mildly sour gathering gas through to highly concentrated acid gas streams in injection service — each placing different demands on the compression system and lubricant.
Upstream Sour Gas Gathering
Compressors collect high-H₂S natural gas from sour gas reservoirs and wellhead gathering networks, compressing it for transport to central gas processing facilities where sweetening removes H₂S for sulphur recovery and pipeline export.
Gas Processing & Sweetening
Within gas processing plants, compressors handle sour gas streams ahead of and during the sweetening process, managing gas at varying H₂S concentrations across amine treatment and acid gas separation stages.
Acid Gas Injection
Concentrated H₂S and CO₂ streams separated from the gas plant are reinjected into deep disposal formations or used for enhanced oil recovery, requiring compressors to handle high-concentration acid gas at reservoir injection pressures.
Sulphur Recovery & Tail Gas
Compressors handle residual H₂S-containing tail gas from the Claus sulphur recovery process, compressing streams ahead of further treatment or thermal oxidation as part of the overall sulphur management system.
Related Applications
Explore Other Gas Compression Applications
Sour gas compression is one part of a broader gas compression landscape. NEXT Lubricants also supports the following applications.
CO₂ Compression
Compression of carbon dioxide in carbon capture, industrial CO₂ supply and process applications where high-pressure CO₂ handling requires specific consideration.
Gas Gathering & Processing
Compression of associated gas and processed gas streams from wellhead collection through NGL extraction, dehydration and condensate stabilisation ahead of pipeline export.
Petrochemical Gas Compression
Process gas compression in petrochemical manufacturing where gas streams include reactive and specialty components under demanding operating conditions.
Hydrocarbon Gas Compression
Process gas compression in oil refining and gas processing across a range of hydrocarbon gas streams and operating conditions.