Act on Insight.
Clear the noise. See the pattern.
Advanced geotechnical processing connects borehole logs, CPT data and laboratory results that shape smarter offshore decisions.
Every offshore project begins with one critical unknown: What lies beneath?
The condition of the seabed shapes everything that follows - engineering decisions, design efficiency, cost, risk and even project viability.
When the subsurface is unclear, progress stalls. Teams delay decisions, add unnecessary conservatism or face costly redesign later in the process. In an environment where time and budgets are already under pressure, a lack of data becomes a critical barrier.
Act on insight. Consistent, high-quality datasets:
- reduce the risk of repeat surveys
- prevent schedule delays
- improve scope clarity
- support confident engineering and commercial decisions
The challenges for geotechnical surveys in extreme deepwater environments
The push into deeper waters presents major challenges for offshore geotechnical surveys, further compounding costs, delays and uncertainties over seabed conditions.
- Vulnerability to surface weather: traditional ship-based geotechnical surveying is highly susceptible to weather conditions as the drillship is directly connected to the seabed by a seabed frame and drill pipe so that any movement of the vessel can disrupt downhole operations.
- Extreme seabed slopes prevent drilling templates from a drillship to adjust uneven surfaces such as steep slopes.
- Soft soils lead to disturbed soil samples, compromising geotechnical surveys. Extremely soft soils can result in heavy equipment such as geotechnical drilling systems sinking into the seabed and in turn compromising the seabed data.
Why choosing the right geotechnical tools makes all the difference
A successful expansion into deeper waters hinges on choosing geotechnical tools with specific characteristics tailored to the unique challenges posed by these sites:
- Weather operability
- Soil compatibility & equipment landing
- Tooling flexibility
- Productivity at depth
- Penetration requirements
- Data quality and real-time insight
The right geotechnical tool should deliver comprehensive seabed intelligence in a single dive by switching seamlessly between drilling, sampling, and in‑situ testing while adapting instantly to changing conditions. This flexibility boosts productivity, enables real‑time adjustments, and expands testing capabilities without the delays of additional deployments.
High performance deepwater geotechnical investigation in remote east Africa
One ultra-deepwater project in Mozambique saw the PROD (portable remotely operated drill) used to conduct everything from cone penetration tests to sampling and pore pressure dissipation tests, completing the entire project on time and without incident, in challenging weather conditions. Delivered by UTEC, Acteon’s Geo-services business line, the project conducted continuous sampling, CPTu, dissipation, and BPTU testing, maximising efficiency by performing multiple in situ tools within a single PROD deployment.
At UTEC, insight isn’t just information. It’s the ability to move faster, design smarter and remove the subsurface uncertainty that holds projects back.
UTEC. Act on Insight.
FAQ
Explore our FAQ section to understand how high-quality geotechnical surveys cut through noise and reveal patterns. Learn how advanced processing unites borehole logs, Cone penetration testing (CPT) data and lab results to drive smarter offshore decisions.
Uncertainty around soil conditions can lead to over-budget repeat site investigations, conservatively designed or unsafe foundations and longer-term operational costs and safety risks. Many projects compensate for uncertainty around seabed conditions by overdesigning the foundations and adding contingency to account for expected downtime. Excessive design conservatism adds significantly to fabrication, installation and potentially operating costs.
Vessel-mounted drills that are unable to decouple from surface weather and/or unable to land softly on a soft soil can easily disturb soil samples. They also can cause inaccurate measurements and low sample recoveries. Tools that can land gently on extremely soft soils do not disturb the first layer of soil and deliver a better, more comprehensive picture of the soil.
Seabed based surveying improves safety by reducing worker contact with hazardous equipment through remote control and automation of drilling, sampling, and testing. It also removes the risks associated with vessel-based drilling in shallow gas areas, preventing gas from entering the drill pipe and threatening the vessel.
Download report:
Turning seabed complexity into confident offshore decisions
As offshore energy moves into deeper, harsher and more complex waters, uncertainty beneath the seabed is driving higher costs, delays and foundation risks. This report explains how new seabed‑based geotechnical drilling technologies are transforming deepwater site investigations, delivering faster, more accurate data, reducing downtime and enabling leaner, safer, more resilient offshore foundations.
What you’ll gain from this report
- Learn how high‑quality geotechnical data can reduce over‑engineering and cut foundation costs.
- Understand how traditional vessel‑based geotechnical survey methods struggle in these environments, driving up costs, downtime, and design conservatism.
- Discover how seabed‑based systems operate in extreme weather with minimal downtime.
- See how advanced tools capture accurate samples in soft soils, steep slopes and ultra‑deep waters.
- Gain insight from real global case studies across oil and gas and offshore wind projects.
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