Set high standards
Know your limits
Break new boundaries
Rock solid solutions
INTRODUCTION, INDUSTRY AND ACADEMIA
Atteris has initiated and developed a number of innovative technologies which have been successfully applied by our clients on subsea and pipeline projects. The additional value this has provided to our clients has resulted in:
- Many hundreds of millions of dollars in cost savings
- Significantly reduced construction timelines
- Considerably reduced levels of HSE risk
- Increased reliability of subsea pipeline systems.
Atteris works closely and partners with industry bodies and universities to promote our industry and be at the forefront of research and development. Part of our core philosophy is to collaborate in the development of university students, offering opportunities and openly sharing knowledge and expertise, in providing a platform for research and development projects, while also engaging with experts in their specific fields.
Pipeline Shore Crossings
Innovative pipeline shore crossing design solutions developed by Atteris have included:
- Woodside Energy’s shore crossing for the 42-inch TSEP Trunkline, where an open cut and cover solution was developed through igneous rock
- Chevron Australia’s tunnelled shore crossing for the 44-inch Wheatstone Trunkline, where a shoreline with very high environmental sensitivity needed to be crossed
- Chevron Australia’s HDD shore crossing for multiple pipelines and umbilicals for the Gorgon Project on Barrow Island
- Woodside Energy’s shore crossing for the 20-inch and 4-inch Otway Pipeline System across the Western Victorian shoreline cliffs and Great Ocean Road, based on a combination of Micro-tunnelling, HDD and open cut and cover
- Quadrant Energy’s shore crossing for the 16-inch Reindeer Export Pipeline, based on HDD
Atteris pioneered the application of the tripartite interaction between pipeline, fluid and soil which occurs when a pipeline on an erodible seabed is subjected to hydrodynamic loading. The scour processes and consequential pipeline self-burial assists in the pipeline stability in most cases. The engineering method which Atteris has developed in-house has proven its value on many existing as well as new pipelines and umbilicals.
Atteris, with the University of Western Australia initiated and developed the O-tube Hydraulic Laboratory Testing Facility which has been used extensively for this application to support the assessments.
Pipeline Secondary Stabilisation
When primary stabilisation (using self-weight) of a pipeline is not sufficient an additional stabilisation system is required. This is usually the case for larger diameter pipelines or when the seabed is not erodible and the hydrodynamic loads are severe.
Atteris has a significant track record in developing innovative and cost-effective secondary stabilisation systems, including:
- The no-cover rock berm design – applied on the 42-inch diameter Trunkline System Expansion Project (Woodside Energy), the 36-inch diameter Pluto Trunkline System (Woodside Energy) and the 44-inch diameter Wheatstone Trunkline (Chevron Australia)
- Pre-trench and sand backfill design– applied on the 42-inch diameter Trunkline System Expansion Project (Woodside Energy), the 36-inch diameter Pluto Trunkline System (Woodside Energy) and the 44-inch diameter Wheatstone Trunkline (Chevron Australia)
- Shallow water rock anchors
Innovative pipeline external impact protection engineering feats have included:
- Quantitative Risk Assessments (QRAs) to demonstrate that rock armour protection can either be eliminated or significantly reduced (Trunkline System Expansion Project for Woodside Energy)
- A design based on pre-trenching and sand backfill, instead of rock armour protection, to protect a high pressure gas pipeline against ship’s anchor drop and drag loads (Pluto LNG Project for Woodside Energy)
Atteris developed engineered design solutions for many waterway crossings. Recent examples are:
- 42-inch gas pipeline crossing of The Narrow in Gladstone, Queensland for GLNG, based on a 4.3 km long segmental-lined tunnel
- 4-inch gas pipeline crossing of the Kolan River in Bundaberg, Queensland for APA Group, based on an HDD intersect method
R&D and Engineering Guidelines
Atteris is sharing its niche expertise in collaboration with other companies and universities through the Australian Pipeline and Gas Association (APGA) and the Energy Pipelines Cooperative Research Centre (EPCRC). Research projects to date have included:
- The development of Offshore Pipeline Engineering Competency Standards
- An engineering guideline for Shoreline and Waterway Crossings
- An engineering guideline for Concrete Mattresses