Mobilising MeBo on Celtic Explorer. Bill Dwyer, P&O Maritime Services

Transcription

1 Mobilising MeBo on Celtic Explorer Bill Dwyer, P&O Maritime Services

2 Defence Services Security Services Provider of Specialist Maritime Services Cargo Services L Astrolabe Polar Marine Science and Research Port Services Chartering & Agency

3 MeBo MARUM University of Bremen Seafloor Drill Rig Portable Remotely operated Hard Rock Soft Sediment Copyright Marum

4 Celtic Explorer ICES 209 Diesel Electric 65m Long Drop Keel 15m Beam DP System 2500 Tonnes Trawl Winches 25t A-Frame Net Drum Winches 10t T-Frame Hydrographic Winch General Purpose Winches 31 Berths 45 days endurance EM1002 Multibeam Sub Bottom Profiler SBE 911 CTD Rosette Fugro Starfix position Moving Vessel Profiler IT Network ROV EA600 Single Beam EK60 Scientific Sounder SBE 21 Thermosalinograph Hull mounted ADCP Turner Model 10 Fluorometer MDM400 Data logger SP70 Fishing Sonar Ixsea GAPS Automated Weather System Gravity Meter Seapath Motion reference System Octans III

5 Celtic Explorer Multi-Disciplinary platform Large open Aft Deck space Regular modifications to vessel In-house Workshop Team Variety of different surveys to date

6 MeBo System Components Drilling Platform 10 Tonnes in Air 7.5 Tonnes in water 20ft container format Copyright Marum

7 MeBo System Components Winch 2500m Armoured Umbilical 32mm 20ft Container format 28 Tonnes 121kW 12-17t pull 8 x SM fibre, 6 x 3kV 6 x 1.5kV

8 MeBo System Components Launch and Recovery system (LARS) MeBo pulled along rails Manouevres drill rig to vertical position. Winch cable supported by A-Frame Shipped in a 20ft Container

9 MeBo System Components 3 Containers Control Workshop Drill Tools Drill Tool

10 MeBo System Components Ancillary components Umbilical block Drill bit rack Hydraulic Power pack Catenary Floats 2 Chain Capstans (fwd and aft)

11 How does it all fit?

12 Deck Strengthening Consultation with ship architects Lloyds Approval 5 days alongside in Bremerhaven

13 Deck Arrangement Drill bit Rack S t e r n Hydraulic Power pack Drill Rig Winch LARS Chain Capstan ControlContainer Workshop Container

14 Load Frames Custom-made frames for Winch, Capstans and LARS Distributes the load to the stiffenening members below deck Steel sleeper beams made for the LARS rails.

15 Frame Layout Container twist locks Chain Capstan Plates S t e r n Winch Frames Sleeper beams

16 Stacked Containers Control Container above Workshop Container below Drill tool container on Bow Drill cores stored the Drill tool container

17 Ship Requirements Electric Power 300KW Water Cooling systems A- Frame Wash down Shore Cranage 16t SWL Heavy lifts (max 28t) 15m lever arm Accommodation 10 MeBo staff

18 Ship Requirements (cont.) Multibeam Sounder Network Interface Just 1 cat5 cable! Vessel Navigation /Position Dynamic Postioning (D)GPS Motion Reference Acoustic Position Reference

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20 Let s Go Drilling! Video Footage Copyright Marum Copyright Marum Copyright Marum Copyright Marum

21 3 Mobilisations on Celtic Explorer Bremerhaven Dec Days in Port for mods to deck Trials in Baltic Sea Shallow water 2 Mobilisations in Galway 4 days to mobilise July 2006 Hard rock Sampling at Galway Bay and Porcupine bank. 700m Aug 2008 Drilling cold-water-coral mounds (2km). Rockall Bank, Porcupine Bank 2 day Demobolisation

22 Sea Conditions Baltic Dec 2006 Sheltered site Calm seas July 2006 Irish West Coast Further off shore Good weather conditons Aug 2008 Irish West Coast Bad Weather Sea condtitions were often too bad for deployment

23 Deployment Shallow Water Deployement DP more important Position Stability critical Less slack in the umbilical Winch reaction time slow Workable Sea State Max sea height 2.2m 2.6m Load becomes to high for the umbilical cord Dynamic load up to 23t seen Heave compensation would increase workable sea states.

24 Questions? Mobilising MeBo on Celtic Explorer Bill Dwyer, P&O Maritime Services