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GEOTECHNICAL EQUIPMENTgeoROV™ Seabed CPT and Sampling System

geoROV™ is a comprehensive ROV-deployable seabed Cone Penetration Test (CPT) and sampling system. It is designed to mount quickly and easily onto a standard work-class ROV or trencher. It may also be deployed from its own stand-alone frame or mounted on the geoREACT suction skid for additional reaction support.

geoROV™ uses the proven concept of a standard fixed rod 5cm² or 10cm² CPT for testing seabed properties in the upper 3 to 5m. In addition to conventional piezocone CPT testing, geoROV™ can also take 1.0-1.5m length samples from the seabed using a range of state-of-the-art sampling techniques: piston samples liner samples, and push samples. Samples can also be taken up to 3m depth using the Interval Sampler.

The system can also be used for other in situ tests such as pore-pressure dissipation monitoring and T-bar measurements. Additional and bespoke seabed in situ testing sensors are also available on request.

geoROV™ is an ideal tool where shallow geotechnical data is required and a suitable ROV is available. The system is able to be deployed with great precision to a location which might otherwise present challenges to conventional seabed geotechnical systems, such as in close proximity to infrastructure or where visual aids are beneficial to final touch-down location.

It is also ideal for projects requiring high rates of productivity with test locations in close proximity to one another, with over 60 tests per day being readily achievable.

AUSTRALIA • BRAZIL • CANADA • INDONESIA • NORWAY • SINGAPORE • UNITED ARAB EMIRATES • UNITED KINGDOM • UNITED STATES

SPECIFICATIONSCone type: Digital piezocone 5cm² subtraction or 10cm² compression type

Sample type: 75 to 100mm diameter Piston, Liner, Push, and Interval samplers

Additional sensors: Available upon request

CPT Penetration depth: 3.0-5.0m

Sample Penetration depth: 1.0-1.5m Push/ Piston/ Liner or 3m interval sampling

Rotary Coring depth: 1.0-1.5m x 40mm dia.

Water depth: 3,000m

Hydraulic and electric power: provided by ROV

Real-time data acquisition: via RS232 link

Drive unit dimensions: 360x300x340mm

Push/pull thrust force: up to 15kN

Tool package weight: in air 55kg, 40kg submerged

FEATURES & BENEFITS » Patented ROV-deployed drive system » Mounts readily to all work class ROVs » 15kN geoROV™ drive unit » Real-time subsea data acquisition module » RS232 communication cable to ROV » Full ROV interface package included » Cone cable management system minimises risk of slack or entanglement

» Available light-duty suction anchor system (geoREACT) to boost ROV seabed reaction

» Available stand-alone seabed deployment frame for non-ROV operations

» Available rotary core drilling system » Fast turnaround processing and log production

KEY CAPABILITIES » Ideal for extremely soft to intermediate soils for CPT, T-Bar, and Sampling

» Rotary core drilling option, incorporating real-time drilling parameters logging

» Capable of operating in water depths up to 3000m » Can acquire soils data in close proximity to existing subsea infrastructure – anywhere accessible by ROV

» Highly efficient in situ testing operations, with typically 20 tests per dive

» Lightweight portable system, fast to mobilise, and easily air-freighted worldwide

» High quality sampling and in situ test data » Innovative engineering design, with a design team able to offer bespoke solutions

APPLICATIONS » Geotechnical route survey » Pre-decommissioning survey » Subsea structure mudmat and skirt design » Drill cuttings characterisation » Geohazard investigation » Pipeline free-span inspection » Gravity base foundation

geoROV™ geoROV™ deployment geoROV™ on seabed