Gas Compressor Operation in Gas Plants

Overview

Gas compressors are at the heart of gas processing plants. They boost inlet gas from gathering systems, recompress flash and recycle gas, drive refrigeration cycles and deliver sales gas into high-pressure pipelines. Because they are large, complex and expensive machines, a single compressor trip can reduce plant throughput, cause flaring and lead to costly repairs. Operators who understand how compressors work, how they respond to changes in gas conditions and how to recognise early signs of trouble can keep these machines running safely and efficiently for many years.

This course provides a practical understanding of the operation of centrifugal and reciprocating gas compressors in gas plants. Participants learn compression principles, compressor performance curves, surge and stonewall, and the effect of gas composition, suction pressure and temperature on capacity and power. The course covers anti-surge control, capacity control methods, lube oil and seal systems, dry gas seals, cooling and scrubbing, and driver types including gas turbines and electric motors. It also explains start-up and shutdown procedures, monitoring of vibration and temperatures, common operating problems, troubleshooting and the coordination of compressor operation with the rest of the gas plant.

Objectives

• Explain compression principles and the role of compressors in gas plants
• Interpret centrifugal compressor performance curves, surge and stonewall
• Understand reciprocating compressor operation and capacity control
• Operate anti-surge, lube oil, seal and cooling systems correctly
• Follow safe start-up, loading and shutdown procedures for compressors
• Monitor vibration, temperatures and performance to detect problems early
• Troubleshoot common compressor operating problems and trips

Who should attend

Training methodology

The course combines clear explanation of compressor principles with performance calculations, real operating data and step-by-step procedure reviews. Participants plot operating points on compressor maps, calculate head and power for different gas conditions, and interpret trends showing surge events, seal problems and fouling. Start-up and shutdown sequences are walked through using real control system screens and interlock lists. Photographs and videos of compressor internals, seals and failures support learning. Case studies of compressor trips and damage are analysed in groups, and each day ends with a short quiz.

Programme outline

Dates and fees

Certificate

Frequently asked questions