EPC Services

Wasco provides Engineering, Procurement and Construction (EPC), Maintenance and Operations Services through a combination of in-house resources and trusted external contractors. The integrated team at Wasco has the capability to remove traditional contract boundaries between the project functions and operate as a single team. The combined EPC approach has successfully delivered complex projects with exceptional cost and schedule outcomes due to efficiencies gained by utilising the correct resources for the task and a reduction in effort managing interfaces between project functions. Wasco’s parts and service business further enhances the team performance by providing specialist operating and maintenance information during the EPC process. Strong relationships with key sub-contractors also allows Wasco to seamlessly transition the project into the commissioning and operations phases.


Wasco operates a full service multi-discipline engineering design office, specifically oriented to provision of fit for purpose engineering and design as part of EPC services to its customers. Wasco also has supply agreements with additional local based engineers and designers whom it calls on as required to meet demand. Wasco also has the ability to extend its resources by reaching into Wasco in Singapore where a multi-discipline Wasco team also operates.


Wasco converts design from documentation to product delivery by working with supply chain partners, selected vendors, specialist equipment manufacturers and its own fabrication workshops. Wasco has strong supply chain links with it's OEM partners across all materials and equipment required for oil and gas facilites and pipelines.

Our services range from well site installation to steel pipeline construction, PE gathering, GRE Pipeline installation and complete Civil, Mechanical, Piping, Instrument and Electrical installation at facilities such as Gas Compression, Water Pumping and Gas Dehydration facilities, mainline valves, metering and scraper stations and end of line pressure regulation stations.


Wasco self performs installation and testing of the products and facilities it designs and supplies. Wasco can provide installation services as head contractor or as a sub-contract service provider.

EPC Projects

EPC - Senex Roma North Gas Compression

Roma North Export Project - Compression Facility & Pipeline

In May 2019 Wasco reached Mechanical Completion of new gas compression, pipeline and end of line facilities for Senex Energy at its Roma North Project. Wasco's scope included offsite fabrication and assembly of pre-assembled pipe racks and process skids and complete civil, pipeline, structural, mechanical, electrical, control and communications installation. The project featured steel pile foundations, with minimal concrete structures and drop in pre-assembled racks and skids. The compression facility and pipeline feature Gas Engine driven skid mounted gas compressors, tri-ethylene glycol dehydration, fuel gas, flare, water treatment, skid mounted switchroom, power generation, plant air, gas inlet PE slug catcher, outlet metering and export facility, 5km DN200 class 1500 steel gas pipeline and end of line custody transfer facility. With delivery of these facilities Wasco has completed at Roma North a 35 gas well gathering system, compression and high pressure export facilities to Senex Energy.

EPC - Westside Moura Central Expansion

Wasco Designs and Builds for Westside at Moura Central

Wasco was EPC contractor for the expansion of Westside Corporation's Moura Central Compression Facility. The project included design, supply and installation of balance of plant and installation of two additional Waukesha-GE 6 Throw Reciprocating gas compressors and TEG dehydration. Wasco carried out Civil, Structural, Mechanical, Piping, Instrumentation and Electrical scope as well as upstream pipeline and slug catcher supply and installation. The project also featured design and installation of a steel driven pile design system for all skids, pipe racks and supports. Wasco’s Shailer Park and Moura teams were joined by partner sub-contractors and the Westside Corporation project and operations team to complete this complex brown field project safely.

Wasco Australia EDL North Goonyella Infrastructure Project

North Goonyella Infrastructure Project

Wasco was EPC contractror for the North Goonyella Gas Infrastructure Project for Energy Developments Pty Limited (EDL) near Moranbah, Queensland. The project scope is to collect waste mine gas from Peabody’s North Goonyella Coal Mine and deliver it to a planned 22MW power station. The Gas Drainage Plant includes three Liquid Ring Compressors, cooling system, power supply through a 2500kVA transformer and flare system and 8km of large bore HDPE pipeline and surface drainage connections. The project scope includes Civil, Structural, Mechanical, Piping, Electrical, Control and Communications and will use trusted partner subcontractors for specialized work to supplement Wasco’s teams.

EPC - Senex Field Gathering Project Phase 2

Completion of Senex WSGP Phase 2 Gathering Project

The second phase of Senex Western Surat Gas Project (WSGP) gathering scope was completed by Wasco during March 2018. Connection of field export gas and water pipelines to export metering points at the Eos field boundary was completed by a small crew. The completion of this part connects the 30 well gathering system supplied and installed by Wasco during 2017. The project was supported by Wasco’s Western Surat (Roma) facility where fabrication of PE arrangements (Vents, Drains, Branches, Valves and Risers) was carried out. In all Wasco supplied and installed 75km of PE100 Gas and Water Pipelines ranging from 63mm to 500mm in size and connected 30 well sites, slug catcher and export metering facilities for Senex.

EPC - Field Compression Facility Expansion

EPC - Field Compression Facility Expansion

A component of one of Wasco’s major customers continuing coal seam gas development includes modification of existing gas compression facilities. Wasco worked with it’s customer to add an additional gas engine driven rotary screw compressor at an existing field compression facility. The project featured piping and control system additions and modifications as well as Waukesha / Ariel equipment installation and commissioning assistance.

Coal Seam Gas – EPC delivery Central Queensland

Coal Seam Gas – EPC delivery Central Queensland

Through 2016 and 2017 Wasco has delivered over 30 gas well connections for it’s major coal seam gas customer near Moura, Central Queensland. Wasco provides EPC services including well pad layout, gathering pipelines and associated infrastructure design, supply and construction services. Services include placement and commissioning of well site equipment as well as buried infrastructure.

Supply & installation of 30 well CSG Gathering System - Surat Basin

Supply & installation of 30 well CSG Gathering System - Surat Basin

During 2017 Wasco completed supply and installation of over 70km PE100 Gas and Water Gathering for a major customer in the western Surat Basin as part of it’s ongoing development of coal seam gas fields. Pipe sizes from 63mm to 500mm were installed along with vents, drains, risers, branches and well hook ups. The project was supported by Wasco Roma fabrication facility where all inline fabricated items were prepared.

Kincora Gas Project

Kincora Gas Project – Restart 2017

Wasco has provided engineering and multi-disciplined trades and labour to plan and implement the restart of the Kincora Gas Project assets for Armour Energy near Surat, Qld. The project involved up to 40 personnel and included inspection, repair, refurbishment, testing and operation of gas wells, pipelines, dehydration, compression and liquids processing to conclude with production of sales gas for export to Wallumbilla during September 2017 and LPG later in the year. The photo captures the Kincora crew on the date of handover of Dry Gas operations to Armour by Wasco.

Toowoomba Steel Main Relocations

Toowoomba Steel Main Relocations

In June 2017 Wasco installed 1700m of DN150 and DN100 steel gas pipeline in three sections at Boundary St and Mort St in Toowoomba as a part of Toowoomba Regional Councils road modifications associated with the second range crossing. Wasco installed and tested 3LPE X42 steel pipeline including several difficult HDD crossings and multi-service utility corridors.

Central Petroleum Mereenie Field Services

Central Petroleum Mereenie Field Services

In October 2017 Wasco mobilised a small crew to Mereenie in the Northern Territory to complete installation of a Wasco designed and fabricated pipeline bridge as part of the EM20 flowline modifications project. The project also included relocation of 700m of DN80 pipeline, installation of 160m new DN80 steel pipeline and modifications to piping at several above ground facilities.