Full text loading...
-
Assessment and Route Optimization of Offshore Geohazards via Composite Risk Mapping and Least-Cost Routing
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, NSG 2025: 1st Conference on Geohazards Assessment and Risk Mitigation Conference, Sep 2025, Volume 2025, p.1 - 5
Abstract
Summary
O&G developments in the Eastern Mediterranean require the route selection and development of pipeline infrastructure across long distances of seafloor. These infrastructure developments are exposed to geohazards which mean that route selection is challenging. Only once high resolution geophysical data are collected (via AUV systems) can route options be finalised. To understand the hazards and route constraints prior to the collection of route-specific data, we have refined the generation of composite risk maps which consider multiple geohazards identified from regional datasets to help optimise route planning at pre-feed stages.
This is followed by least-cost route optimisation based on the approach outlined by Blaise and Spinewine (2021), which when combined with the composite risk mapping means route selection around geohazardous areas of seafloor can be optimised at an earlier stage; allowing survey works based on the selected route to be performed with greater confidence, mitigating some requirements for reconnaissance survey work along sections of the route.
By using a combination of qualitative geohazard assessment work, underpinned by an understanding of the geological process that drive the risks to pipelines, with a quantitative route optimisation approach, routes can be defined with the context of geohazards already incorporated.
© EAGE Publications BV