Natural Gas Processing on Offshore Facilities

Natural Gas Processing on Offshore Facilities Training Course

This intensive three-day course is designed to address the operation and control of natural gas processing equipment on an offshore facility. Gas processing offshore involves the removal of any liquids (condensate/oil and water) from the well fluids in one or more separators before dehydrating, compressing and either re-injecting or exporting via a pipeline. Acid gases (Carbon Dioxide and Hydrogen Sulphide) may be removed from the gas on the facility and further removal of heavier hydrocarbons may occur by dew-point conditioning. The compressors used in the processing and export of the gas are usually centrifugal compressors. Centrifugal gas compressors, gas dehydration (using glycol units), and hydrocarbon dew-point conditioning will therefore be covered in detail. Acid gas removal (by the use of scavengers, amine units, membrane separation or molecular sieves) will be touched briefly depending on the interest of the delegates attending the course. Each topic will be covered using a mix of short lectures, videos, dynamic simulation models and group workshops.   

Suitable for: This course is designed for participants who are involved with the operation of offshore natural gas production on either fixed platforms or FPSOs. Operations personnel who have some level of responsibility for the operation, control or management of the gas processing facility would benefit most from this course. 

Key topics covered 
Centrifugal Compressor Control and Operation   
How a centrifugal compressor raises pressure 
Compressor operation and performance curves 
Capacity control - suction or discharge pressure; fixed or variable speed 
What is surge; the symptoms and consequences of surge 
Simple anti-surge control   
Compressor protection 

Dehydration - Glycol
The glycol dehydration process   
Contactor operation and control 
Glycol regeneration process - operation and control 
The important checks needed to keep the glycol solution clean (and minimise losses) 
Hydrocarbon Dew Point Conditioning 
Understanding of methods and reasons for conditioning 
J-T Valves 
Turbo expanders   
Operation and control of turbo-expander/recompressor sets 
NGL recovery and disposal options 

Acid gas removal - the principal methods used 
Membrane separation 
Amine systems 
Molecular sieves 
Scavenging 
Acid gas disposal 

Dates & Locations

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