Click here to view/download the presentation
Transcription
Click here to view/download the presentation
DAY 1 TECHNICAL PROGRAMME Aegir’s first project Meredith Taylor, Heerema Marine Contractors WHY INVEST INTO A NEW VESSEL? • • • Heerema is a key player in complex deepwater construction for over 10 years Maintain and expand position in expected growth of market in complex high-tech field developments Heerema’s Objectives: - heavy pipelay heavy lifting heavy reeling Heavy pipelay to 2000 mT top tension and 3500 mwd Heavy lifting to 4000 mT capacity Heavy reeling to 800 mT top tension + lifted reels Use pipelay A&R system for deepwater lowering Back-to-back compatible with DCV Balder Worldwide operations - Fast transit speed - Monohull - Good workability in long swells Choice for a mix of high-end capabilities – – – Multi-purpose Deepwater Construction Vessel Based on existing vessel design 3 TYPICAL DEEPWATER FIELD DEVELOPMENT Drilling Center 2 Subsea Structure Floating Production Facility Drilling Center 3 Steel Catenary Riser Flowline Gas Export Line Well Oil Export Line Mooring Line Anchor Pile Flowline Jumper Drilling Center 1 4 LIFTED REELS CONCEPT 2 reels + 1 reel drive unit on vessel empty reel in transit 1 reel + 1 reel drive unit at quay Pipe production ramp Tie-in station Pipe stalks, length suited to continuous operation full reel in transit OUTLINE DESIGN VESSEL 1. 2. 3. full reel 3000T 25m 10m empty reel 750T Existing concept Reels close to crane Tower & moonpool close to crane & distant from reels full reel 3000T 6 OUTLINE DESIGN VESSEL 1. 2. 3. 4. Existing concept Reels close to crane Tower & moonpool close to crane & distant from reels Move crane, tower & moonpool off-center empty reel 750T full reel 3000T full reel 3000T 7 OUTLINE DESIGN VESSEL 1. 2. 3. 4. 5. empty reel 750T Existing concept Reels close to crane Tower & moonpool close to crane & distant from reels Move crane, tower & moonpool off-center Lengthen ship 50m full reel 3000T full reel 3000T 8 AEGIR - MAIN EQUIPMENT 4000 mt mast crane 2000 mt RJ-lay tower Length o.a.: Width: 46.2 m Depth: 16.1 m Draft (working): Draft (transit): Installed power: 3000 mt lifted reels Dynamic positioning: 800 mt tensioners 1500 mt DWL system 211.5 m 9 – 11 m 8m 48 MW DP3 Transit speed 12 knots Accommodation: 289 POB 9 100 80 60 40 20 0 30 60 4000 Lifting capacity [mT] 120 Lifting height [m] AEGIR – 4000 MT MAST CRANE 3000 2000 1000 90 radius [m] Double block (splitable) 10 AEGIR – DEEPWATER LOWERING SYSTEM (1500MT) 1 fall 500T dynamic 375T static 2 falls 1000T dynamic 750T static 4 falls 2000T dynamic 1500T static -3500m -7000m -7000m 11 AEGIR’S FIRST PROJECT - LUCIUS • • • • • • • • Scope Project vs Aegir Timeline Reeling Reel Transfer Friction Testing Riser Pull-in Deepwater Lowering Moonpool 12 SCOPE • • • • • • Aegir 4 8” flowlines 3 6” flowlines 6 8” SCR’s 1 140mT Manifold Crossing mattress • Balder • Thialf Suction Piles, SPAR Mooring, Manifold Topsides 13 PROJECT VS AEGIR TIMELINE 14 LIFTED REELS CONCEPT Dampened tuggers control the pendulum motions 15 REEL TRANSFER • 4 reels, max weight mT - pipe 1646, total 2754 Reel transfer seastates • Reel No Pipe Weight Total Weight Transfer Sea state - [mT] [mT] Hs [m] Tp[s] 1 1475 2325 1.4 5.5 2 1625 2733 0.55 5.1 3 243 1351 0.7 5.6 4 1646 2754 0.95 4.9 16 REELING KNOWLEDGE DEVELOPMENT Max. compression strain location 17 FRICTION TESTING • Reliability based 18 REEL INITIATION 19 RISER BASE PILE PLET 20 RISER PULL-IN DESIGN • SCR Pull Tube 21 RISER PULL IN SPAR 22 DEEPWATER LOWERING • • • • • • DWL system Lowered Manifold 140 mT to 6820’ Subsea Transfer from crane – 45m synthetic sling 23 MOONPOOL • • • • PLET’s installed through moonpool CFD analysis used to model hydrodynamic loads Radar wave measurement system in moonpool Steering winches added as a result of analysis 24 QUESTIONS 25