Sevan Marine. Sylindrisk FPSO for ekstreme miljø Norsk Offshoredag Oslo 27.mai M 2010 P 1

Transkript

1 Sevan Marine Sylindrisk FPSO for ekstreme miljø Norsk Offshoredag 2010 Oslo 27.mai 2010 M 2010 P 1

2 Sevan Marine ASA 100% 100% 100% 100% 100% Sevan Production AS Sevan Drilling Sevan Pte Ltd Singapore Sevan Marine do Brasil Ltda Kanfa AS 80% Sevan Production Services Pte Ltd Kanfa TEC Kanfa Aragon 100% Sevan TBN Pte Ltd. Mator Sevan TBN Pte Antall ansatte : ca % Ltd. M 2010 P 2

3 Topside and Process Technology Process simulation, design and engineering Design and engineering i of thermal energy systems and waste heat recovery systems Separation, gas handling, water treatment t t and process performance technology FPSO gas systems, gas compression, offshore LNG, LPG and condensate M 2010 P 3

4 FPSO Sevan Piranema In operation since October 2007 Field operator: Petrobras Contract type: Build own and operate FPSO operator: Sevan Marine Location: Offshore Aracaju Water depth: 1000m Oil processing: bopd Gas processing/ injection: 3.6 mill Sm bar M 2010 P 4

5 FPSO Sevan Hummingbird In production since September 2008 at Venture Production Operated Chestnut field UK CNS Field operator: Venture Production Contract type: Build own and operate FPSO operator: Sevan Marine Location: UK Central North Sea Water depth: 120m Hull size: Sevan300 Oil processing: Water injection: Liquid combined: bopd bwpd blpd M 2010 P 5

6 FPSO Sevan Voyageur at the Premier Oil Shelley field In operation since August 2009 Field operator: Premier Oil Contract type: Build own and operate FPSO operator: Sevan Marine Location: UK Central North Sea Water depth: 95m Hull size: Sevan300 Oil processing: bopd Water injection: bwpd Liquid combined: blpd Power feed to two ESPs 2 * 800kW M 2010 P 6

7 SEVAN DRILLER 650 MODU THE RIG FOR ULTRA DEEPWATER AREAS High capacity DP Class 3 drilling rig, Sevan Driller, based on the Sevan cylindrical hull form High bulk and deck load capacity Robust design with high stability reserve Protected moonpool double bottom and inner /outer sides Deep water operation in excess of 3000 m ( ft) 6 year contract for Pertrobras A second unit, Sevan Brasil to be delivered in 2012 for a 6 year contract with Petrobras in Brasil M 2010 P 7

8 FPSO Sevan 1000 for the ENI operated Goliat field M 2010 P 8

9 Felt informasjon Goliat feltet er lokalisert i Barents Havet, 85 km nordvest for Hammerfest Feltet eies av Eni Norge(65%) og Statoil (35%) med Eni Norge som operatør Vanndyp på ca 400m og skal utvinnes ved hjelp av en fast forankret sylindrisk FPSO som den første flytende produksjonsenheten i Barenshavet. M 2010 P 9

10 Goliat Main Dimensions and Features Cylindrical geostationary FPSO Hull diameter: 90 m Process deck diameter: 107 m Main deck elevation: 44 m Process deck elevation: 49 m Loaded draft: 30 m Ballast draft: 20 m Double side and double bottom Segregated ballast tanks Living quarter for 120 persons Spread mooring system with a total of 14 lines in 3 directions (combined polyester and chain mooring segments) Shore cable connection for 60 MW using HVAC technology M 2010 P 10

11 Goliat Main Dimensions i and Features, cont. 20 riser and 5 cable I-tube slots inside ballast tanks Storage capacity of 1,000,000 barrels of oil ( m3) Total liquid processing : Oil production : Sm 3 /day Sm 3 /day ( bopd) Produced water re-injection : m 3 /day Sea water injection : m 3 /day Gas processing : 3.9 million Sm 3 /day@250 bar M 2010 P 11

12 Snitt gjennom senter av Goliat FPSO Topsides Skrog Laste tank tank Ballast tank tank Nord skaft Senter skaft med pumperom NORSOK standard og strukturen er i hovedsak av S355 karbonstål med syrefast stål/aluminium på spesielt utsatte områder samt deler av topsiden hvor tilkomst til maling og vedlikehold er vanskelig. Skroget er designet med plate tykkelse mellom 12 og 25mm har en stålvekt på ca tonn. M 2010 P 12

13 Typisk horisontalt snitt i skroget I motsetning til et skipsformet skrog der statiske vekter, tank fylling og bølgelaster gir betydelige globale spenninger på grunn av skrog bøyning vil det for en sylindrisk enhet praktisk talt ikke være globalspenninger og dimensjonene styres i stor grad av lokalkrav i form av flyt og buling. Beregninger gjort viser at det kun er side-struktur og forankrings festene som er dimensjonert av utmatting. M 2010 P 13

14 Modelltester i Havbassenget hos Marintek Beregnede dynamiske trykkbelastning er på skroget (fra Genie DNV software) M 2010 P 14

15 Vinterisering Beskyttelse av personer og utstyr t mot vind, lave temperaturer, rein, sludd, snø og ising Områder som ikke inneholder hydrokarboner vil bli helt innelukket Prosessområdet vil ha tett tak og delvis åpne sidevegger for å sikre naturlig ventilasjon Dette gir store gevinster for arbeidsmiljø, reduserer behov for værbeskyttelse, gir mulighet for oppvarmede arbeidsområder og det gir en sikrere materialhandtering Sevan Marine 15- Norsk Offshoredag 2010 M 2010 P 15 Oslo

16 Bølgebryter på hoved dekk og værbeskyttelse rundt prosessen Bølgebryteren mellom hoved og prosessdekket er utviklet for å gi tilfredstillende arbeidsmiljø og lufting men og kunne ta ut kraften av impuls laster fra grønn sjø opp mot 10 bars trykk. For prosessområdet er ikke grønn sjø en aktuell problemstilling men her er det arbeidsmiljø, miljøutslipp og eksplosjonssikkerhet som har satt krav til designet. Prosess område som er dekket med et tett tak og har perforerte vegger. Veggene er relativt tette i nedre del og blir gradvis mer åpne oppover mot taket. M 2010 P 16

17 Offloading to shuttle tankers M 2010 P 17

18 Single Offloading Station Winterzation and main functions Special focus on: Minimum pollution risk Working environment Winterization Operational efficiency Hose wear (side loads) Reel fatigue M 2010 P 18

19 Shuttle Tanker Operation Typical Tanker Arrangement Freefall Escape route VOC Pipe & accesslifeboat to lifeboat module trunk with heated walkways on top Retractable thrusters Enclosed area Special focus on: Minimum pollution risk Safe positioning Safe working environment Winterization Hose and BLS Shut down philosophy Minimum 5m M 2010 P 19

20 Shuttle Operation Typical Offloading Sectors The Banana offloading sector M 2010 P 20

21 Goliat FPSOen skal bygges i den største dokken ved Hyundai Heavy Industri Offshore yard i Ulsan Korea. Planlagt byggetid for skroget er 9 måneder fra stål kutting til hele skroget opp til hoveddekk er sammenstilt. M 2010 P 21

22 Sevan FPU-ICE Main Dimensions and Features Geostationary FPU-ICE Hull diameter Process deck diameter Main deck elevation Process deck elevation Ice draft Open water draft 87 m 119 m 30 m 35 m 26 m 15 m M 2010 P 22

23 Sevan FPU-ICE / FPSO-ICE M 2010 P 23

24 Benefits of Being Cylindrical in Ice Equal performance in all direction No need for weather vaning No ice crushing along vertical sides Ice drift is unpredictable Driven by wind and current Typically following the tide (turning times a day) Limited need for ice management Zero turning circle Typical drift path Sevan Marine 24- Norsk Offshoredag 2010 M 2010 P 24 Oslo

25 Sevan FPU-ICE Designed for Shtokman Conditions Disconnectable riser and mooring buoy No swivel or turret required 24 mooring lines 10 x 16 Gas production and export risers 14 misc. risers, power cables and umbilicals Sevan Marine 25- Norsk Offshoredag 2010 M 2010 P 25 Oslo

26 Sevan FPU-ICE Disconnectability M 2010 P 26

27 Disconnection of Mooring Buoy- Offset 10% of WD M 2010 P 27

28 Model Tests - Sevan FPU-Ice Test setup for the ice testing Recorded pitch motion in surface ice Ice thickness 1.9 m Dift Drift velocity 1k knot M 2010 P 28

29 Test in Ice Ridge Ice ridge dimensions Ice ridge in test tank Typical restoring force time history Ice ridge drift speed 1 knot M 2010 P 29

30 Conclusions Ice Tests ULS test conditions in ice ridges : - loads not exceeding the capacity of the mooring system - pitching < 5 - accelerations in surge and pitch very minor - no ice travelling under the hull ULS level ice (1.9 m thickness) : - very moderate mooring system loads - pitching < 1 - accelerations in surge and pitch very minor - no ice under hull for M 2010 P 30

31 Sevan Units for Ice Operation - Versatility of the Design Cylindrical platform - well suited for Arctic operations Floating Production Unit - Sevan FPU-ICE Floating Production, Storage and Offloading - Sevan FPSO-ICE Mobile Offshore Drilling Unit - Sevan MODU-ICE Floating LNG unit - Sevan FLNG-ICE Sevan Marine 31- Norsk Offshoredag 2010 M 2010 P 31 Oslo

32 Motions of Sevan FPSO s M 2010 P 32

33 Model tests with Sevan Plattforms Several Open Water Model test completed (All in Marintek s Ocean Basin/Towing Tank) May 2001 Initial Consept Tests Parameter varuiations June 2002 June 2004 (Sevan 300; General North Sea condition) December 2005 (Sevan 300; Chestnut Field) August 2006 (Sevan Driller, DP) May 2007 (Sevan 300; Pilot Field) October 2007 (Sevan 1000; Offloading + Cyclonic Conditions) March 2008 Sevan-ICE (Shtokman Conditions) August 2008 Goliat FPSO April 2009 Goliat FPSO Increased Bilge Box Diameter November 2009 Luva FPU with SCR at Vørinplatået Other tests Wind Tunel tests; Sevan Driller (Force) May 2006 Ice Tests; Sevan-ICE (HSVA, Hamburg) April 2008 M 2010 P 33

34 Completed Model Tests Sevan FPSO Model Tests Sevan 1000 Size 22 Loaded Ballast 2001 Sig gnificant Wav ve Height (m) Wave Spectral Peak Period (secs.) Loaded 2002 Balast 2002 Loaded 2004 Mean 2004 Ballast 2004 Terminal 2004 Loaded 2005 Ballast 2005 GOLIAT 100- years Contour Goliat years Operating 2006 Loaded 2007 Cyclonic 2007 M 2010 P 34

35 Full Scale Tests; Chestnut - Motions during storm event M 2010 P 35

36 Alternative designs for extreme environments based on the Sevan Cylindrical Concept FPSOs with Steel Catenary Risers (SCR) More than 1200 m Waterdepth Extreme environmental conditions (Hs = 21 m) 12 and 14 Steel Catenary Risers Feasibility demonstrated in model tests carried out in 2009 and 2010 FPSOs combined with Well Head Platform (WHP) Feasible for harsh environment operations Bridge-link to wellhead platform No subsea installations Free hanging risers between the two units Efficient well maintenanse WHP may have drilling equipment installed M 2010 P 36

37 FPSO Floating Production Storage Offloading The Sevan Platform - the versatile technology - GTW Gas To Wire (Offshore powerplant) MODU Mobile Offshore Drilling Unit FDPSO Floating Drilling Production Storage Offloading MSV Multipurpose Support Vessel FLNG Floating Liquefied Natural Gas production FAU Floating Accomodation Unit M 2010 P 37

38 M 2010 P 38