CPT

Long Description
Cone Penetration Testing
Description
Cone penetration testing (CPT or commonly CPTU/PCPT) involves thrusting a 10cm² or 15cm² cross-sectional area cone into the ground or seabed at a constant penetration rate of 2cm/s. Continuous and simultaneous measurements of cone resistance (qc) sleeve friction (fs), pore pressure (u), and inclination (ix/y) are recorded in real-time.

Cone penetration testing can be performed on land using top-push CPT systems and CPT trucks. They have been adapted specifically for nearshore and offshore operations for the oil and gas and renewable energy sectors in the form of seabed CPT and wireline (downhole) CPT systems.

The results from a CPT test can, in principle, be used to evaluate:
  • Stratification
  • Soil type
  • Soil density and in situ stress conditions
  • Mechanical soil properties:
    • Shear strength parameters
    • Deformation and consolidation characteristics
 
Media

Companies
Geoforce Technical Services provides in-depth experience to the Geotechnical market by supplying robust, high quality equipment and experienced personnel to our clients. The core values of our business are to ensure we conduct safe, dynamic operations ... Morewhilst remaining cost effective and productive - this approach is the key to everything we do.
Lankelma provides cone penetration testing (CPT), site investigation and engineering consultancy for construction projects in the UK and around the world. We deliver high quality information about the ground quickly, safely and cost-effectively.... More

We have an ingrained knowledge of CPT, allowing us to go beyond simply supplying accurate data, to provide our clients with high value interpretation and engineering input for their projects, both on land and in the marine environment.
Brittenborg is a small and flexible team of expert geotechnical operators and consultants operating primarily in the Offshore Renewable Energy, Offshore Oil & Gas, and Dredging & Marine Construction sectors. ... More

Brittenborg has over 25 years' experience in all aspects of geotechnical site investigations in Europe, Asia, Africa, Middle East, and Oceania. We offer a broad range of services and activities to contractors all over the world, including:

Geotechnical equipment operation (e.g. Cone Penetration Testing (CPT), vibrocoring, piston coring, and box coring)

Project management and client representation (e.g. offshore client representation, third-party expert review, tender preparation)

Geotechnical data interpretation, especially seabed and downhole CPT

Training and guidance of operators and technicians (e.g. best practice for safe operations, maintenance and service, data acquisition and interpretation etc)

Our team of highly-skilled operators and technicians hold all relevant offshore certifications and accreditations to carry out the tasks at hand, e.g. OPITO BOSIET and STCW seafarers certifications.

Brittenborg — there is more to explore.
Equipment
The WISON-APB-Classic is capable of performing cone penetration tests (CPTs) and taking soil samples at depths up to 550 m (water depth + drilling depth). It requires a drill string with an inner diameter of at least 101.6 mm (4") and a drill tower clearance ... Moreof 11 m. The WISON-APB 100 version has a pushing capacity of 100kN and is capable to performing tests with a 1m and 3m stroke length. The WISON-APB 100 comes with an electric winch that is self-tensioning for heave compensation. The winch allows the tool to travel at a maximum speed of 2 m/s inside the drill string.

Key Features

Proven wireline CPT system with a pushing force of 100kN

Water depth + drilling depth up to 550m

CPT stroke of 1m or 3m

Suitable for 5cm² and 10cm² Icones (up to 100MPa tip resistance)

Suitable for soil sampling with the Push or Piston Sampler

Remote-controlled and electrical constant tensioning winch, power pack, mast and sheave block

Software for realtime data acquisition and control

Works in conjunction with Dando 9000 rotary drill rig
A.P. van den Berg's DW ROSON 100 is a proven seabed CPT system, deployed from a vessel with an A-frame or crane through a moonpool or over the side. The electrical wheel-drive system pushes the pre-assembled CPT string into the seabed. Wheel friction ... Moreis imposed by hydraulic force. A self-tensioning electric winch with heave compensation feeds the umbilical for power supply and data communication.

Key Features

Proven wheel-drive system with a pushing force of 100kN

Option for second set of wheels to achieve 200kN

Deployable from medium to large vessel

4,000m water depth rating, CPT depth up to 50m

Provided with technology to operate at high water pressures

Suitable for 10cm² Icone + click-on modules + Seabed Sampler XL
Neptune 5000 Seabed CPT System – designed, created and developed by Datem Ltd – is a coiled rod Cone Penetration Test (CPT) system. It features a 35kN push capacity, 20m test penetration, real-time control and data acquisition with in-built automatic ... Moresafety cut-outs. It is situated within a compact frame to allow for easy deployment from smaller survey vessels via an A-Frame or deck crane.

Key Features

5cm2 detachable cone, 10cm2 cone, and T-Bar cone

35kN push capability

Up to 20m penetration

Easily deployed compact subsea frame

Real-time control & display

Single coax connection for power & data

Automatic safety cut-outs

Low maintenance, low consumable use

Easy to operate Windows-based PC control