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Overview of State-of-the Art Techniques in Geotechnical Survey
Jon Machin Director UTEC Geomarine
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Topics • Traditional Surface Core Drilling • Emergence of Robotics – Subsea and ROV’s • ROV Conveyed Testing Systems • Robotic Core Drilling • Future Technologies
Surface core drilling
Traditional Surface Drill Ship Fleet The Surface Drilling Technique
Emergence of subsea technology
Recent Advances in Last 10 years
Images: Machin, Fugro, Published Magazine Covers
Introducing ROV’s Robots in Industry Est. ~1M Industrial Robots*
60% in Automotive Production*
From Space, Factory to Ocean
*EU Figure
Images courtesy Oceaneering
A Typical Day at Work ROV originally human diver mimic ISO 13628-8 now standardizes many ROV
interfaces in subsea oilfield equipment General survey, inspection and intervention tasks Increasingly sophisticated work packages
Introducing ROV’s
ROV Meets Diver!
ROV Controls Wellhead ROV Drills Geotechnical Core
Images: Machin
geoROVTM
Introducing geoROVTM
• Developed by UTEC Geomarine 2009
• ROV-conveyed seabed testing unit
• Based around the proven concept of the Cone
Penetration Test (CPT).
• CPT to 5m, Sampling to 1m.
• Easy interface with a standard work class
ROV of opportunity.
• Additional ROV-conveyed tools under
development….
CPT – Why?
Cone Penetration Test – developed by the Dutch in the 1950s to investigate soil conditions
Measured parameters (tip and
sleeve earth pressure, pore pressure) and derived parameters such as soil strength, density
CPT – Why?
Subsea oilfield pipes, structures and trenchers need high precision CPT data at the seabed
geoROVTM Track Record of 26 Projects: • North Sea • Gulf of Mexico • SE Asia • Australia
geoROVTM – Experience
geoREACT – Seabed REACTION
geoROVTM working for BP/Subsea7 with geoREACT suction anchor skid
Case study – developing a seabed drill 2005
Images: Machin
Surface Drill Ship Exploration in 2,000m Water Depth Solwara 1 Site, South Pacific, 2005
Case study – developing a seabed drill 2005
Images: Nautilus, Canyon
Canyon Offshore ROVDrill Mk1 at Solwara 1, 2007
1 Case study – developing a seabed drill 2005
Subsea Drilling – Why?
Canyon’s ROVDrill Mk1, Solwara 1, 2007
Images: Nautilus, Canyon
Why ROVDrill Mk2? Key robotics design decisions required at development stage: • Installed power • Drill sizes/diameters
• Level of automa=on • Elevator cylinder, chain drive or rack & pinion
• ROV Support Requirements • Off-‐the-‐shelf or proprietary tooling
• Deployment mechanism and weight limits • Tooling conveyance by rod or wire-‐line?
• Maximum water depth • Drill mud system for hole stability
• Maximim drilling/tes=ng depth • Adjustable founda=on base
Case study – developing a seabed drill 2005
Global seabed drill rig fleet Subsea Drill Rig
Model
No. of Units
Manufactured Commercially Available?
Max Drill
Depth (m)
Approx. Core/ Sample
Diameter (mm)
CPT Capabilit
y
Tool Conveyance
Mass in Air (Te)
Power/ Support
Requirements
“BMS” 2 Williamson & Associates 1996,
2007
No – JOGMEC Research
25 50mm core (NQ)
No Rod 5 Stand-alone 25HP
“MEBO” 1 Prakla / Schilling, 2003
No – Marum Research
60 64mm core (HQ)
No Wireline 8 Stand-alone 75HP
“Rockdrill2” 1 Atlas Copco / Hydrovision / BGS,
2005
No – BGS Research
15 64mm core (HQ)
No Rod 6 Stand-alone 50HP
“DWACS” 1 Williamson & Associates, 2009
No – NIOT Research
100 85mm core (PQ)
No Wireline 14 Stand-alone 50HP
“Sea Drill” 1 Gregg/ MARL/ Schilling, 2011
Yes – Fugro 150 50-85mm core; sample
Yes, real-time
Wireline 10 Stand-alone 100HP
“PROD1” 1 Benthic Geotech in-house, 1998
Yes – Benthic Geotech
100 44mm core; 44mm sample
Yes, real-time
Rod 11 Stand-alone 100HP
“PROD2” & “PROD3”
2 Benthic Geotech in-house, 2009
Yes – Benthic Geotech
100 72mm core; 75mm sample
Yes, real-time
Rod 14 Stand-alone 130HP
“Rovdrill 3” 1 Perry Slingsby Systems, 2009
Yes - Seafloor Geoservices
90 73mm core; sample
Yes, memory
cone
Wireline 11 150HP ROV hot-stab
“ROVDrill” 2 Perry Slingsby Systems, 2006
Superseded by Mk.2 (Canyon)
20 50mm core (NQ)
No Rod 7 150HP ROV built-in
“ROVDrill Mk.2”
2 Cellula Robotics, 2011
Yes – Canyon Offshore
100 50-72mm core; 55-85mm
sample
Yes, real-time
Rod 12-15 150HP ROV built-in
Global seabed drill rig fleet – Latest News!
Images: Cellula, TI Geosciences
3. TI Geosciences (Royal IHC and Tompkins UK) announce the new IHC SWORD®
2. Fukada Salvage new CRD100 under delivery
1. “Benthic Geotech announce build of new PROD4 at SMD, Newcastle”
Integrated Survey and Exploration
Robotic coring Geophysics - AUV
Technology focus now to improve productivity and reduce costs
Vessel of Oppotunity
Simultaneous Operations Enabled