Offshore marine operations. Heavy lifts Finn Gunnar Nielsen Norsk Hydro O&E Bergen, Norway & NTNU, Department of Marine Technology
Content Examples on Offshore lifting operations Module lifting Jacket installation Installation of sub-sea equipment Overview of important issues. Lift in air versus sub-sea operations Dynamics Weather windows statistics fgn - Date: 2003-09-03 - Page: 3
Grane jacket, Apr. 2003 fgn - Date: 2003-09-03 - Page: 4
Grane process module installation, Apr. 2003. Lift-off from barge. fgn - Date: 2003-09-03 - Page: 5
Grane process module installation, Apr. 2003. Approaching jacket. fgn - Date: 2003-09-03 - Page: 6
Grane process module installation, Apr. 2003. Landing on jacket. fgn - Date: 2003-09-03 - Page: 7
Grane process module installation, Apr. 2003. Living quarter. fgn - Date: 2003-09-03 - Page: 8
Building-blocks of a process platform fgn - Date: 2003-09-03 - Page: 9
Jacket installation, Self-floater and launching from barge fgn - Date: 2003-09-03 - Page: 10
Crane assisted jacket installation fgn - Date: 2003-09-03 - Page: 11
Crane assisted jacket installation, side view fgn - Date: 2003-09-03 - Page: 12
Crane assisted jacket installation, plane view. fgn - Date: 2003-09-03 - Page: 13
Tandem lift from barge fgn - Date: 2003-09-03 - Page: 14
Fram module lift. Model test setup fgn - Date: 2003-09-03 - Page: 15
Fram module. Model testing fgn - Date: 2003-09-03 - Page: 16
Installation of Fram West module The Fram West module (900 tons) lifted onboard Troll C. May 2003 fgn - Date: 2003-09-03 - Page: 17
Simulation of Fram module installation fgn - Date: 2003-09-03 - Page: 18
Heavy versus light lifts Heavy lifts: Coupled dynamics, No heave compensation, W > 1000 tonnes) Light lifts: (Minor coupling, Heave compensation possible, W <100 tonnes) fgn - Date: 2003-09-03 - Page: 19
Example: Saipem7000 Semisubmersible crane and pipelaying (J-lay) DP vessel Dimensions: Length: 198 m Breadth: 87 m Depth to main deck: 45 m Transit draft: 10.5 m Operational draft: 27.5 m Ballast system: Computer controlled system comprising 4 x 6,000 t/h ballast pumps, fully redundant. Lifting facilities main crane: Fully revolving. Main blocks tandem lift: 14,000 t Main block single lift: 7,000 t revolving at 40 m Aux.1 block: 2,500 t revolving at 74 m rad. Aux. 2 block: 900 t revolving at 115 m rad. Lowering capability to 450 m below sea level Whip hook: 120 t revolving at 150 m rad. fgn - Date: 2003-09-03 - Page: 20
Examples on heavy lifts, modules Module Hook weight (t) Lift date Vessel Kittiwake deck 6 900 May 90 DB102 (Shell) Miller M7 (BP) 6 200 July 91 DB102 Piper PUD 10 750 Mar 92 DB102 (EEC) Gannet deck ( 9 600 Apr 92 DB102 Shell) Piper WM/DSM 6 825 Apr 92 DB102 (EEC) Bruce P10 (BP) 8 750 Aug 92 M7000 Bruce P20 (BP) 8 180 Aug 92 M7000 Bruce drill deck 7 520 Aug 92 M7000 (BP) Saltire deck 10 300 Sept 92 DB102 (EEC) Tiffany M1 8 140 Nov 92 M7000 (Agip) Tiffany M2 6 070 Nov 92 M7000 (Agip) North Everest 8 500 Nov 92 DB102 (Amoco) Lomond 8 600 Dec 92 DB102 (Amoco) Scott P1 10 000 Apr 93 DB102 (Amarada) Scott UQ 8 000 Apr 93 DB102 (Amarada) East Brae 8 500 Spr. 93 DB102 (Marathon) Nelson (Shell) 9 600 Aug 93 DB102 Dunbar (Total) 9 400 Mid 94 DB102 fgn - Date: 2003-09-03 - Page: 21
Crane assisted jacket installations Jacket Water depth Hook weight (t) Lift date Vessel (m) Veslefrikk 175 9 050 May89 M7000 (Statoil) Gyda (BP) 66 8 770 Sept 89 M7000 Kittiwake (Shell) 85 5 300 May 90 DB102 Gannet (Shell) 94 7 500 June 91 DB102 Bruce PUQ (BP) 121 9 425 May 92 M7000 Bruce D (BP) 121 7 950 May 92 M7000 Unity (BP) 127 6 500 Jul 92 DB102 Beryl riser 112 5 800 Jul 92 DB102 (Mobil) Scott JU 141 8 800 Mar 93 DB102 (Amerada) Nelson (Shell) 84 8 500 Spr. 93 DB102 East Brae 116 9 300 May 93 DB102 (Marathon) Dunbar (Total) 145 9 100 Mid 94 DB102 fgn - Date: 2003-09-03 - Page: 22
Installation of subsea equipment, TOGI 1989 fgn - Date: 2003-09-03 - Page: 23
Installation of subsea equipment, Troll pilot fgn - Date: 2003-09-03 - Page: 24
Installation of subsea equipment, Oseberg sør template, 2002. fgn - Date: 2003-09-03 - Page: 25
Offshore wind farms 20 x 2MW fgn - Date: 2003-09-03 - Page: 26
Offshore wind farms fgn - Date: 2003-09-03 - Page: 27
Environmental conditions Water Depth 1000m fgn - Date: 2003-09-03 - Page: 28
Significant wave height, Hmo(m) Environmental conditions 22 20 18 16 14 12 10 8 6 4 2 Approximate 100yr contourlines Faroe area Haltenbanken Norte rn North S e a GOM WOA 0 0 0 5 10 15 20 25-250 30 Wave peak period, Tp(s) -500 Njord Troll Norne Schiehallion Foinhaven Water Depth (m) -750-1000 -1250-1500 Girassol Dalia Marlin 4 Increasing challenges Ram Pow el Ursa Hoover/Diana Orm en Lange -1750 Marlin Sul -2000 5 WA 8 Brazil Roncador 12 GoM Crazy Horse 18 Hs(m) fgn - Date: 2003-09-03 NNS/AM - Page: 29
Weather windows 3.5 Me a s ure d H s 3 H' s 2.5 H s (m ) 2 1.5 1 t 1 t 2 t 3 t 4 t 5 0.5 0 10 20 30 40 50 60 Tim e (ho urs ) fgn - Date: 2003-09-03 - Page: 30