Murphy Oil – Tupper West Sour Gas Plant
Gas Liquids Engineering Ltd. (GLE) provided engineering, procurement and construction support (EPCM) for a 180 MMSCF/d sour gas processing facility in Northeast British Columbia. Design features included:
- Inlet slug catching and separation on three separate inlet gathering systems
- Inlet and sales gas compression – Four (4) 3-stage Ariel JGZ/6 packages, each with 6500 hp electric drives
- Amine sweetening – 215 US gpm amine circulation
- Dewpoint control utilizing mechanical refrigeration (300 USTR and 700 hp refrigeration compressors) and glycol injection
- Condensate stabilization and condensate storage (800 bbl of storage) with truck-out facilities
- Sour water stripping and produced water storage (10,000 bbl of storage) with truck-out facilities
- Acid gas compression – dual 300 hp electric drive, 5-stage reciprocating compressors
- Acid gas dehydration – DEXPRO™ process
- Acid gas and sweet gas mixing and compression facilities to deliver the combined sour gas system to a nearby gas plant (250 hp reciprocating compressor)
- 2 km acid gas pipeline to an acid gas injection well (by others)
- Vapor recovery (tank and dehydrator still vents) and recycle compression (200 hp electric drive)
- High pressure, low pressure and acid gas flare systems
- 23.9 km (14.9 mile) long 18” diameter sweet sales gas pipeline and a 5 km (3.0 mile) long 3” diameter sour sales gas pipeline (See Feature Project)
- High and low pressure fuel gas
- 22 MMBtu/hr process heat medium
- 6 MMBtu/hr utility heat medium
- Instrument air and nitrogen purge systems
- 26.4 MW power generation station providing all electrical power to the Tupper West Gas Plant (See Feature Project)
- Plant 13800 V, 6900 V, 600 V, 208 V, 24 V electrical systems including switchgear, MCCs, VFDs and distribution
- Underground drain and storage systems for closed hydrocarbon drains, floor drains, amine drains and glycol drains
- Site civil design and work including grading plans, retention pond design, office/warehouse buildings, site roads, foundations and structural steel
