Oil & Gas

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GHD has the experience and multidisciplinary engineering resources to handle the entire life cycle of oil and gas processing and pipeline projects: from conceptual design/routing to detail engineering and commissioning. We understand the variability and complexity in handling hydrocarbon gases and liquids and has designed projects that included Coal Seam Gas(CSG), natural gas, crude oil, refinery products and natural gas liquids. We work collaboratively with our client from onset of the project, beginning with an evaluation of the options. As projects progress from concept to detail design, we focus on meeting the project objectives and creating value for the client.

Hydrocarbon processing facilities handle products which are flammable and hazardous, often at elevated pressures and temperatures. GHD delivers both greenfield developments and brownfield plant expansion or plant debottlenecking projects. Our experience includes a large number of successful projects for CSG, conventional natural gas, Liquefied Petroleum Gas (LPG), refineries and other hydrocarbon processing facilities.

Community expectations demand that pipelines and facilities be designed and constructed to minimise the risk of harm to the public . Pipelines projects must also be delivered with minimum impact on the environment and cultural heritage, whilst providing a return on investment for pipeline owners. Our team is experienced in identifying and managing these concerns.. We coordinate with regulators and environmental, cultural, land service and legal professionals to achieve a design that balances the impact to the public, environment and cultural resources with the project goals.

We provide services for a variety of facilities, including:

  • Oil and gas well head and well pad systems
  • Gas and associated water-gathering systems and trunk lines
  • Conventional natural gas production and processing to sales gas quality
  • Coal Seam Gas (CSG) / Coal Seam Methane (CSM) dehydration and compression plants
  • Gas transmission pipelines, including gas metering and regulator stations
  • Other unconventional gas developments such as shale oil and mine ventilation gas
  • Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG) facilities
  • Low pressure consumer gas distribution networks
  • Crude oil production and refining
  • Crude oil and refined products pumping stations and pipelines
  • Breakout storage facilities
  • Crude oil terminals and refined products terminals
  • Sales gas transmission pipelines and regulation and metering stations
  • Biofuels, bioethanol and biodiesel facilities
  • Utility systems such as flare, fuel gas, steam, cooling water, hot oil, instrument and motor air

Our services include:

Concept/feasibility studies

  • Upstream field development planning
  • Conceptual analysis
  • Desktop route selection studies
  • Project scope development
  • Concept option screening studies including high level cost estimation and economic assessments
  • Technical and financial feasibility studies

Front End Engineering Design (FEED)

  • Scope definition
  • Design basis development
  • Steady state and transient pipeline hydraulic modelling (flow assurance)
  • Process Flow Diagram (PFD) and Piping and Instrumentation Diagram (P&ID) development
  • Generation of preliminary data sheets
  • Pipeline material selection and design pressure studies
  • Pipeline route selection, including geotechnical and environmental investigations
  • Input into pipeline and facility license applications and approvals
  • Input into land acquisition and stakeholder consultation
  • Hazard Identification (HAZID) and Hazard and Operability (HAZOP) studies
  • Pressure Safety Valve (PSV) and relief system sizing
  • Functional safety management plans

Facilities detailed design

  • Comprehensive multi-discipline detailed design of process and non-process infrastructure
  • Development of data sheets
  • Material and construction specification generation and development
  • Detailed design documentation
  • Detailed design drawings
  • Construction scope of work packages
  • 3D modelling
  • Vessel design
  • Safety integrity level (SIL) validation/verification
  • Hazardous area classification design
  • Functional safety design and verification
  • Balance of plant and utility design
  • Civil and structural design
  • Controls and automation design
  • Power supply and distribution design

Pipelines detailed design

  • Transient hydraulic modelling (flow assurance)
  • Carbon steel, High-Density Polyethylene (HDPE) and Glass Reinforced Epoxy (GRE) pipeline and piping design
  • Pipeline and coating specification and selection
  • Generation of standard crossings and other standard detail drawings
  • Horizontal Directional Drill design
  • Alignment sheet generation
  • Fracture control plans
  • Isolation plans
  • Pipeline integrity management plans
  • Cathodic protection design
  • Pipeline leak detection and control systems
  • Pipeline and piping stress and fatigue analysis
  • Pipeline facilities design
  • Construction and material specifications generation and development
  • Construction scope of work packages
  • Design verification

Project management and Engineering, Procurement and Construction Management (EPCM)

  • Project management
  • Total installed cost estimates
  • Requisitioning and tender evaluation
  • Placement and expediting of purchase orders
  • Construction support
  • Commissioning and startup assistance
  • Operating procedures
  • Factory acceptance testing
  • Site acceptance testing

Operational Support

  • Pressure Safety Valve (PSV) revalidation
  • Hazard and Operability (HAZOP) study revalidation
  • P&ID as-building
  • Process optimisation and debottlenecking studies
  • Site investigations
  • Operations (OCC) and Supervisory Control and Data Acquisition (SCADA) facility and Programmable Logic Controllers (PLC) system updates
  • Automation services
  • Mechanical, instrument and electrical troubleshooting
  • Secondments into client operations or engineering teams
  • Gas-fired equipment compliance audits
  • Conformity assessments for foreign certified electrical apparatus intended for use in hazardous locations
  • Electrical Equipment for Hazardous Areas (EEHA) inspection services and audits

Safety in design and risk assessment

  • Hazard Identification (HAZID) study facilitation
  • HAZOP study facilitation
  • Control System Hazard and Operability (CHAZOP) study facilitation
  • Layer of Protection Analysis (LOPA) study facilitation and Safety Integrity Level (SIL) determination
  • Consequence modelling of hazardous incidents, such as gas dispersion and thermal radiation calculations
  • Hazardous area classification audits
  • Arc clash evaluations, including coordination studies, short circuit evaluations and energy calculations

Owner’s engineer and review

  • Owner's engineer
  • Technical due diligence for asset transfers

For further information, contact:

Malcolm Rushin
Service Line Leader, Oil & Gas, and Chemicals – Australia, Chile, New Zealand, Asia Pacific, Europe and the Middle East
T: +61 7 3316 3000
E: Malcolm Rushin

Dave D'Amico
Service Line Leader, Oil & Gas, and Chemicals - North America
T: +1 716 856 2142
E: Dave D'Amico

Scotia Boost Compression and Sales Gas Pipeline Concept Refine


In 2013 Santos had a large number of projects underway in order to expand its coal seam gas production to maintain supply to the LNG facility under construction on Curtis Island near Gladstone, as part of its multi-billion-dollar GLNG project.

One of these projects was an expansion of its Scotia facilities, which was its original Coal Seam Gas production asset. The project also included a high-pressure transmission pipeline to connect the gas through to the Curtis Island LNG plant.

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Malcolm Rushin

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Malcolm has more than 23 years’ experience in the oil and gas, and hazardous chemicals industries. His experience spans all phases of project design as well as construction, commissioning and operations roles in South Africa, the UK and Australia. Malcolm joined GHD 14 years ago and has had technical and project management roles on process plant and pipeline projects as well as GHD operational roles.

Service Line Leader, Oil & Gas – Australia, Chile, New Zealand, Asia Pacific, Europe and the Middle East
T: +61 7 3316 3000
E: Malcolm Rushin

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