Arrow Energy’s Produce to Limit (PTL) project was undertaken to maximise production from its existing domestic facilities associated with the Daandine and Tipton gas fields and their respective Central Gas Processing Facilities (CGPFs).


Promech were engaged by Wasco Australia (Wasco) to provide the engineering and procurement assistance component of an EPC contract to design, supply and install six Fuel Gas Conditioning Skids at the Tipton CGPF. The Fuel Gas Conditioning Skids were required to enable the existing gas engines driving the gas reciprocating compressors to be fuelled with wet low pressure gas from the gathering network instead of dry high pressure sales gas as was the existing configuration. As part of this project each gas engine was converted to a GSID (turbo charged intercooled draw-through) configuration which involved the design and certification of a new AS3814 compliant low pressure Type B valve train. Promech initially completed the concept design and development in conjunction with Wasco as part of an early contractor involvement process. Subsequent to award of the final EPC contract, Promech were engaged by Wasco to complete the detailed design and procurement assistance for the Fuel Gas Conditioning Skids.

Project Achievement

Promech’s key project achievements included:

  • Completed significant value engineering in the concept design stage to minimise capital cost which assisted Wasco in winning the EPC contract
  • Adopted a fully modular design approach to ensure minimal installation time and therefore minimal compressor down time
  • Completion of all design deliverables in compliance with the Arrow technical specifications and design review process
  • Resolution of the existing misfiring issues experienced on start-up by the engines

Project Details

Client: Arrow Energy

Project Location: Dalby, QLD

Year: 2017

Design management
Process design
Structural, mechanical and piping design
Equipment selection
Procurement assistance