stanislav verichev ihc merwede b.v./mti holland b
TRANSCRIPT
![Page 1: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/1.jpg)
Technologies for mining in the deep sea
Stanislav VerichevIHC Merwede B.V./MTI Holland B.V.
International Workshop for Students “Seafloor Mineral Resources: scientific, environmental, and societal issues”
18th March 2013
![Page 2: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/2.jpg)
DEEP SEA MINING
![Page 3: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/3.jpg)
General Risk Analysis:identification of the key risks followed by the development of prevention/mitigation strategies
PROBLEMS →→→→ SOLUTIONS
![Page 4: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/4.jpg)
1. Geostatistical toolbox and SWORD
2. Hyperbaric cutting
3. Vertical hydraulic transport
4. Dynamics of the vertical transport system
5. Water hammer
6. Wear
7. Environmental impact
![Page 5: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/5.jpg)
1.Geostatistical toolboxcore sampling →→→→ Kriging interpolation →→→→ geotechnical model of the area →→→→ 2D/3D maps →→→→ cutting forces and mining pattern
![Page 6: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/6.jpg)
6
Key Features of the SWORD
• Sample sizes up to 4 inch.
• Operating depth up to 2 500m.
• Combines conventional rotary drilling with sonic drillingcapability which is typically up to 5 times faster thanconventional sampling methods.
• Ground penetration up to 50m.
• Remote operation from vessel-based control center.
• Target sample integrity > 95%.
• Wire-line system for down hole tooling and CPT tests.
Sonic Wireline Operated Remote Drill
![Page 7: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/7.jpg)
2. Hyperbaric cuttingductile vs. brittle →→→→ cutting forces →→→→ experiments →→→→ modeling →→→→optimal deep sea mining tool
![Page 8: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/8.jpg)
Fluidization tests at MTI Holland B.V.
Marbles Gravel Rock blast gravel
Decreasing sphericity, increasing angularity
3. Vertical hydraulic transport
![Page 9: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/9.jpg)
Shape and transport velocities
![Page 10: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/10.jpg)
Experiments
![Page 11: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/11.jpg)
Simulations
Concentration peak development
![Page 12: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/12.jpg)
4. Dynamics of the vertical hydraulic transport system
![Page 13: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/13.jpg)
Booster Stations (submersible dredge pumps)
![Page 14: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/14.jpg)
Why correct modeling of dynamics is important?
• according to OREDA 2009, 16-24% of the total failures of the offshore oil production risers are fatigue-related failures;
• knowledge on maximal displacements and moments is critical for the design of joints and couplings;
• the model that accounts for all the aforementioned excitation sources has never been built and analyzed yet.
![Page 15: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/15.jpg)
Internal and External Loads
VTS loading mechanisms
Dynamic loading
Static loading
Vessel motion, Waves
Dead weight, Hydrostatic pressure,
Mean value of hydrostatic drag
Flow-induced instabilities
Booster stations, Propulsion system
Slurry flow
Vortex-Induced Vibration
Ocean Currents
![Page 16: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/16.jpg)
Dynamical Pressures as a Result of Inhomogeneous Slurry Flow
![Page 17: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/17.jpg)
Example of the output
15-4-2013 17
![Page 18: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/18.jpg)
5. Water hammer
![Page 19: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/19.jpg)
![Page 20: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/20.jpg)
![Page 21: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/21.jpg)
Subjects to be investigated for water hammer:
• Pump failure
• Bulk modulus mixture (under dynamic conditions)
• Model verification/validation
• Water hammer mitigation
• Other possible water hammer scenarios:
• Breakage of a flexible hose
• Startup & shutdown of the system
• Valve failure
• Free gas/gas hydrates handling, etc.
![Page 22: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/22.jpg)
Abrasive wear at hyperbaric conditions
![Page 23: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/23.jpg)
![Page 24: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/24.jpg)
7. Environmental impact
JIP project
“Towards Zero Impact Approach for Deep Sea Offshore Projects”
![Page 25: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/25.jpg)
Project objectives
• To develop a framework to be used as a preliminary impact assessment of the mining activities in the deep sea
• To determine the uncertainties of the methodology and to determine the sensitivity of the assessment framework to these uncertainties
![Page 26: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/26.jpg)
Location
MAR: Azores-Portugal EEZ
![Page 27: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/27.jpg)
Location
![Page 28: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/28.jpg)
![Page 29: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/29.jpg)
Mining system(Derived from “Nautilus” and “IHC’s” available data )
1. Soil conditionsSMS deposit scenario: Solid soil type “Solid Rock”.
This scenario implies working with small volumes and high slurry mixture concentrations.
![Page 30: Stanislav Verichev IHC Merwede B.V./MTI Holland B](https://reader034.vdocuments.site/reader034/viewer/2022051906/628476ff19d84b57fa662453/html5/thumbnails/30.jpg)