Geotechnical analyses for offshore projects
Marine geotechnical investigations involve analysing soil and sediment samples taken from the seabed. These analyses provide insight into the composition, strength and properties of the subsoil and form an important basis for the design, construction and management of offshore structures.
Normec supports projects in sectors including offshore wind energy, the oil and gas industry, subsea cable and pipeline infrastructure, coastal defence and port development. With reliable laboratory analyses, we help you make informed decisions throughout every phase of the project.
From sample receipt to reliable analysis results
Normec has specialist facilities for the receipt, registration and processing of offshore soil samples, including drill cores from complex marine environments.
Every assignment begins with a project consultation during which we discuss the research question, the samples and any project-specific considerations. In this way, we tailor all analyses to the project objectives, relevant standards and the required reporting format.
Our specialists provide services including:
- Geotechnical logging
- Photography of drill cores
- Description of soil profiles
- Selection of test intervals
- Representative subsampling
- Laboratory analysis
Normec offers a comprehensive range of geotechnical laboratory tests for offshore projects.
A comprehensive package for offshore
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1.
Logging and initial assessment
- Core logging and photography
- Thermal conductivity and thermal resistance
- Electrical resistivity
- Lab vane test
- Torvane test
- Pocket penetrometer
- Minimum and maximum density
- Fall Cone test
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2.
Geotechnical laboratory tests
We carry out the following geotechnical analyses, amongst others:
- Grain size distribution (including hydrometer analysis)
- Moisture content
- Particle density (pycnometer)
- Particle density (gas jar)
- Bulk density
- Atterberg limits (liquid limit and plastic limit)
- Unconsolidated undrained triaxial test (UU)
- Effective stress triaxial tests (drained and undrained)
- Direct shear test (Direct Shear Box)
- Oedometer test
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3.
Geochemical investigation
For offshore projects, we can carry out additional geochemical investigations, including:
- Water- and acid-soluble sulphate
- Water- and acid-soluble chloride
- Organic matter (Loss on Ignition)
- pH
- Carbonate content
- Salinity
- TPH and PAHs
- Metals
What this means for you in practical terms:
- Reliable analysis results for offshore seabed surveys
- Specialist processing of offshore soil samples
- A comprehensive range of geotechnical and geochemical analyses
- Full traceability throughout the entire analysis process
- Accurate results to support your offshore project
Successful offshore projects
A good offshore design starts with reliable data on the seabed. Accurate geotechnical and geochemical analyses provide insight into the properties of the seabed, enabling you to better manage risks during design, construction and operation.
Normec supports you throughout the entire process: from the receipt of offshore samples to a clear report containing reliable analysis results.
Looking for a partner for marine geotechnical investigations?
Frequently asked questions about marine geotechnical investigations
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Marine geotechnical investigation involves analysing soil and sediment samples from the seabed to gain an understanding of the properties of the subsoil.
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Our analyses support, amongst other things, offshore wind farms, oil and gas projects, subsea cables and pipelines, coastal defences and port developments.
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Yes. We provide geotechnical logging, core photography, sample descriptions, subsampling and a wide range of laboratory analyses.
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We carry out, amongst other things, triaxial tests, Atterberg tests, oedometer tests, grain size analyses, moisture content determinations and shear tests.
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Yes. We oversee the entire process, from sample receipt and logging to laboratory analysis and reporting.