SEABED CPT

Gregg Drilling has developed a full scale deep water seabed Cone Penetration Testing (CPT) system called the Seabed CPT. Utilizing a patented hydrostatically compensated cone, Gregg’s Seabed CPT is capable of working in water depths of up to 3,000 meters with a high level of accuracy. The underwater system incorporates Schilling Telemetry and high quality robotic components to ensure efficient operation and exact placement.

With a submerged weight of only 5 tons, Gregg’s custom designed Seabed CPT can achieve a reaction force of up to 20 tons. This allows the unit to stay lightweight and portable, yet achieve the same capabilities of other large frame submersible systems.

The Seabed CPT pushes the standard 10 and 15cm² cones as well as T-bar and ball cones. The system can also push a thin-walled piston sampler to obtain high quality undisturbed samples in the upper 6m of sediments. For deeper sampling, Gregg offers jumbo piston core samplers up to 15m in length.

SPECIFICATIONS
Operating System:	Handled via umbilical and LARS
Power/Hydraulics:	Sub-sea
Measured Parameters:	Depth, tip resistance, friction sleeve stress
Cone Size:	10 and 15 cm² (hydrostatically compensated)
Weight of Seabed Frame:	Approximately 5 tons
Thrust Capacity:	20 tons
Depth Capability:	50 meters
Water Depth Range:	Up to 3000 meters

Sea bed CPT lars schematic

Minimum Vessel Requirements:

DPI Station Holding Capacity
Clear Deck Space: 21 meters x 9 meters (70' x 30')

Additional Information
View/Print::	Press Release:	Articles::
Seabed CPT Datasheet	Release #1	Water Well Journal
	Release #2

20 ton push capacity Seabed CPT unit shown
on land in storage warehouse

The Seabed CPT shown positioned in the
launch and recovery frame.

Winch with specialized cable capable of lowering unit to the sea floor and transmitting data to the surface in real-time.