Client: Azneft PU

Location: Oil Rocks, 28 May platform

General information: The existing compressor station at Oil Rocks is designed to transport natural gas from Chirag and Gunashli fields to Bakhar field through a subsea pipeline. The booster compressor station #2 operated by 28 May Oil and Gas Production Division (OGDP) has twelve (12) T-4702 type gas turbine engine driven compressor units and auxiliary equipment.

Completion date: March 2010

Capacity of compressors: Maximum one compressor capacity - 1,8 million m3/day (20°C 1013 hPa); maximum two compressor capacity - 3,6 million m3/day (20°C 1013 hPa)

Design conditions applied: 

Design Pressure

Gas pressure at the compressor inlet of 1st stage 4,5-6 barg (20°C)

1st stage outlet pressure 17-20 barg

2nd stage inlet pressure 15,8-18,8 barg

2nd stage outlet pressure 35-58 barg

Station Outlet 65,5 barg

Design Temperature

Station inlet gas temperature +5; +25°C

1st stage compressor inlet temperature 20°C

Maximum after 1st stage cooler gas temperature

(at 36°C environmental temperature) 45°C

Maximum after 2nd stage cooler gas temperature (at 36°C environmental temperature) 45°C