Geo-Consulting
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Optimised And Fit-For-Purpose Scopes
Sub-surface investigations are designed with specific project objectives in mind.
When planning for a geophysical and geotechnical investigation campaign, one should consider the exact end-use of data from a design and engineering perspective. This ensures that suitable and adequate data are collected prior to the campaign. Sub-surface investigations are designed with specific project objectives in mind. These are based on the understanding of the interaction between soil conditions and proposed structures or foundations.
Typically, geophysical surveys determine the seabed and sub-seabed conditions across the proposed site before conducting the accompanying geotechnical survey. It is imperative that geophysical surveys are appropriately designed to identify site conditions, such as bathymetry, seabed slope and spatial geological variation, as subsequent geotechnical investigations depend on the findings of the geophysical survey. However, it is equally important to consider the variability of soil conditions as set by the initial geophysical survey. Not only does this ensure that the correct information is acquired for prospect evaluation, it also allows for efficient planning and management of your exploration budget.
Expert Insights For Optimal Design
Geotechnical interpretative reports provide clients with information regarding sub-surface conditions, which are essential for specific analyses and optimising engineering design.
A large part of site evaluation comprises of geotechnical interpretive studies, from the design of specialised and advanced laboratory test programmes, to the review of testing results and generation of soil design parameters. The primary objective is to determine appropriate geotechnical design profiles that facilitate an efficient and economical design and provide installation analyses of foundations and anchors.
Geotechnical interpretative reports provide clients with information regarding sub-surface conditions, which are essential for specific analyses and optimising engineering design. A typical geotechnical interpretative report will comprise of laboratory testing results, followed by an interpretation of both static and cyclic laboratory testing results, including both the geological and geotechnical interpretations.
Ensuring Safe, Efficient And Cost-effective Offshore Developments
Geo-hazards must be considered during the planning and design phase, as early detection is key to avoiding setbacks during your development project.
Our geo-consultancy team specialises in integrating multi-disciplinary datasets to identify geo-hazards and determine the associated risks. Apart from comprehensive assessments, we also provide engineering management solutions to mitigate your potential risks.
Our range of geo-hazard detection and analysis services include:
- Probabilistic Seismic Hazard Analysis (PSHA)
- Site specific response spectra analysis
- Liquefaction analyses
- Submarine slope stability assessment
- Excess pore pressure (XPP) assessment
- Geophysical-geotechnical interaction study
Geo-hazards must be considered during the planning and design phase, as early detection is key to avoiding setbacks during your development project. Ultimately, these studies help improve your operational efficiency through identifying and mitigating risks, reducing commission delays and preventing expensive remedial works.
Webinars
Webinar on Jack-up Rig Geohazard Survey & Case Study – intro
Webinar on Jack-up Rig Geohazard Survey & Case Study_5Jun20 – slides
Reliable, Efficient And Economical Foundation Designs
Our personnel have extensive experience in geotechnical analyses, engineering design, reporting according to the relevant standard and codes of different foundation types.
Geo-Consultancy offers a full range of geotechnical engineering services for both large and small projects. We support all phases of project development, from conceptual design, to feasibility studies, appraisal and front-end engineering design (FEED ), such as:
- Spudcan vs pile or pipe interaction
- Pile group effect
- Drill-and-grout pile/conductor capacity
- Conductor setting depth assessment
- Suction foundations capacity and stability analyses
- Pipeline-soil interaction
As well as supporting the installation stages of:
- Jacket on-bottom stability analysis
- Pile driveability back-analyses using pile installation data
And also in re-development of offshore structures and facilities:
- Pile re-capacity assessment considering pile ageing effect
- Mobile Offshore Production Unit (MOPU) foundation analysis
Our personnel have extensive experience in geotechnical analyses, engineering design, reporting according to the relevant standard and codes of different foundation types. The analysis includes utilising the advanced 2D and 3D numerical models to assess complex foundation scenarios, i.e. geometry, loading conditions as well as seismic and cyclic behaviours.
Verifying Existing Structures For Optimal Operations
Instrumentation and monitoring technology are increasingly used to monitor structures, processes and infrastructure during construction and operational phases to verify design and detect events that will ultimately reduce risk.
One of them is an Excess Pore Pressure (XPP) which monitors the soils surrounding offshore platform foundations.
Since, 2013 our Geo-Consultancy team have been actively involved in each XPP data retrieval campaign at the Duyong Platform clusters of Petronas Carigali (PCSB). In addition, we have performed subsequent data reviews as well as integrity assessments for their pile foundations.