Science & Technology

Jens Ditlev Experience and Examples from a typical Route Survey

Description
Jens Ditlev Experience and Examples from a typical Route Survey DOF Subsea, Introduction DOF Subsea Atlantic Region Bergen Aberdeen Oslo DOF Subsea was established in Main office is located
Published
of 37
168
Published
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Similar Documents
Share
Transcript
Jens Ditlev Experience and Examples from a typical Route Survey DOF Subsea, Introduction DOF Subsea Atlantic Region Bergen Aberdeen Oslo DOF Subsea was established in Main office is located in Bergen, Norway. Geoconsult, purchased by DOF ASA in May 2005, changed name to DOF Subsea Norway in September The company now has Offices in Bergen, Aberdeen, Luanda, Accra and Oslo (Semar). Subsea 3 SAFE the RITE Way Life Saving Rules Subsea 14 Subsea Assets DOF Subsea AS Information correct at time of going to press. DOF Subsea Atlantic Personnel Geophysicists Geologists Data Processors Surveyors Hydrographic Surveyors Carthograpers Technical drafters GIS experts ROV pilots Cswip 3.4u Engineers/Coordinators Engineers Subsea DOF Subsea Atlantic Fleet Skandi Achiever Skandi Singapore Skandi Neptune Skandi Skansen Diving Support Vessel STX DSV06 Built LOA m Breadth m Draught - 6.6m Deck - 735m² Offshore Crane - 140t Accommodation Triton XLX WROV x 2 Portable LARS x 2 Air diving system - depth rating 50 MSW Saturation diving - depth rating 350 MSW Sat diving spread - 18 Diving Support Vessel STX DSV06 Built LOA m Breadth m Draught - 6.6m Deck - 900m² Offshore Crane - 140t Accommodation Triton XLX WROV x 2 Portable LARS x 2 Air diving system - depth rating 50 MSW Saturation diving - depth rating 350 MSW Sat diving spread - 18 Construction Support Vessel CONV MT6016 Built LOA m Breadth m Draught - 6.3m Deck m² Offshore Crane - 250t Accommodation Schilling UHD WROV x 2 Moonpool 7.2 x 7.2m Mooring Installation Vessel AH 04 Built LOA m Breadth m Draught - 7.8m Deck - 970m² Deck Capacity 1840t Offshore Crane - 250t Accommodation - 90 Schilling UHD WROV x 2 Moonpool 7.2 x 7.2m Bollard Pull - 349t A-Frame - 350t Chain Locker 4 x 299m³ Shark Jaws 3 x 800t Subsea DOF Subsea Atlantic Fleet Geosund Skandi Seven Skandi Constructor Skandi Iceman Light Construction Support Vessel UT 745 Built 2001/2006 LOA m Breadth m Draught - 5.9m Deck - 720m² Deck Capacity t Offshore Crane - 100t Accommodation - 88 Schilling UHD WROV x 2 Moonpool 7.1 x 6.0m Construction Support Vessel STX OSCV 03 Built LOA m Breadth m Draught - 7.0m Deck m² Deck Capacity t Offshore Crane - 250t Accommodation Triton XLX WROV x 2 Moonpool 7.2 x 7.2m Light Construction Support Vessel SX121 Built LOA m Breadth m Draught - 8.0m Deck m² Deck Capacity t Offshore Crane - 140t Accommodation Triton XLX WROV x 2 Moonpool 8.0 x 8.0m Mooring Installation Vessel VARD AH12 Built LOA m Breadth m Draught - 7.8m Deck - 780m² Deck Capacity t Accommodation - 45 Triton XLX WROV x 1 Bollard Pull 280t Chain locker 4 x 250m³ Shark Jaws x 800t Subsea 8 Subsea Survey Platforms DOF Subsea AS Information correct at time of going to press. ROV DOF Subsea operates over 62 ROVs in its fleet 5 new ROVs on order Work class ROV systems (UHD / Triton) Inspection Class ROV Systems (Comanche and Tiger) Most vessels have two dedicated built-in systems 2 AUVs (Kongsberg Hugin) for seabed mapping and inspection 2 FOCUS II ROTVs Subsea 10 DOF Subsea ROV Fleet Seaeye Tiger Schilling HD Schilling UHD Kystdesign Triton XL Triton XLX Subsea 11 DOF Subsea AUVs & ROTVs AUV ROTV Subsea 12 Route SurveyRequirements Desktop Study Route Survey UXO Survey Clearance Survey Prelay Survey Geotechnical Survey Cable Lay/Trenching Cable detection survey Subsea 14 Capabilities Geophysical Seabed Mapping ROV Surveys INS on all survey projects since 2003 Dual Head MBE, R2Sonic and Reson 8125 Edgetech SSS/SBP, HD Video Advanced processing of INS and compilation of all aquired data Delivery of all data in NaviModel and GIS 16 Geophysical Seabed Mapping AUV operations Hugin 1000, 3000 meter depth capability Modular variable length mid section for batteries and sensors. System Sensors: Kongsberg EM2040 MBE, Edgetech 2200 SSS/SBP, advanced forward looking Sonar, Doppler Aided Navigation System, Digital Stills camera. Terrain following and Collision Avoidance system. Pressure tolerant rechargeable Lithium-Polymer Battery System. Mission Endurance 22 hours. Continental Shelf Shelf Breakline Continental Slope Slope Baseline Deep Water Geohazard Lines 17 Pipeline/Cable Inspections Using Dual Head MBE for better data coverage over pipeline Use INS on all our ROV and ROTV operations to achive better positioning data to improve the overall data quality. System Sensors: R2Sonic 2024 MBE, Edgetech SSS, Pipetracker, Doppler Aided Navigation System, HD video. Processing solution NaviModel and Visualsoft. Project deliveries in NaviModel, Visualsoft and/or SSDM GIS deliveries. 18 Structure Inspections General Visual Inspection Close Visual Inspection Flooded Member Detection Marine Growth Measurement and Removal UT Testing Phase Ray/Eddy current Inspection of flexible flowlines and gas lift lines Cathodic Potential Measurements with Stab and Proximity equipment UV tracer leak detections Cswip personnel 19 Survey & Positioning Services Typical Survey Services Construction support Subsea positioning Metrology - acoustic Metrology - theoretical 3D/4D Visualisation Software Rig move / structure tow out / installation Acoustic array installation Dimensional control Services Laser scanning Data processing 20 Example Project 21 Pre-Lay Route Survey 2016 Grapnel Hook to remove cables from route Gather detailed geophysical and video data from the two centrelines using ROV mounted systems (362km x 2 passes) Expand hairpin joint survey area with Hull based MBE and SBP UXO survey and removal of potentially hazardous targets within the corridor Geotechnical Sampling (CPT/Vibrocore) DOF Subsea 22 DOF Subsea 23 DOF Subsea 24 Profile of Potential Wreck DOF Subsea 25 DTM Image of Seabed Depression with Anchors DOF Subsea 26 MBE data showing the relationship between water depth and bedform-size DOF Subsea 27 MBE data example morphology cross section of sandwaves DOF Subsea 28 Internal Reflector within Sandwave Area Isopach map with burial depth to internal reflector DOF Subsea 29 Innovatum Magnetometer/Gradiometer DOF Subsea 30 Debris / Fishing Gear DOF Subsea 31 Example of Observed Trawl Scars DOF Subsea 32 Slope Calculations, 1 meter contour lines Gradient Images DOF Subsea 33 SBP Example DOF Subsea 34 SSS data example of seabed collapse structures DOF Subsea 35 SBP data example of compressional structure related to collapse structures from MBE data observed on the seabed DOF Subsea 36 Thank you!
Search
Related Search
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks
SAVE OUR EARTH

We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

More details...

Sign Now!

We are very appreciated for your Prompt Action!

x