{"id":878,"date":"2013-03-31T16:36:05","date_gmt":"2013-03-31T08:36:05","guid":{"rendered":"http:\/\/alfanso10.esy.es\/?p=878"},"modified":"2017-03-02T14:38:18","modified_gmt":"2017-03-02T06:38:18","slug":"fpso-for-eps-north-malay-basin","status":"publish","type":"post","link":"http:\/\/alfanso10.com\/?p=878","title":{"rendered":"FPSO For EPS North Malay Basin"},"content":{"rendered":" <\/p>\n
COMPANY: EMAS-AMC<\/strong><\/span><\/p>\nPROJECT TITLE: FPSO for EPS North Malay Basin<\/strong><\/span><\/p>\nCLIENT: HESS<\/strong><\/span><\/p>\nLOCATION:\u00a0Malaysia<\/strong><\/span><\/p>\nYEAR: 2013<\/strong><\/span><\/p>\nVESSEL: Mutli Purpose Offshore Construction Vessel Lewek Crusader<\/strong><\/span><\/p>\nThe LCR is a multi puspose self-propelled offshore construction vessel. It is equipped with DP3 dynamic positioning, two work class ROVs, 400MT heavy duty crane and a 150MT subsea knuckle jib crane The barge measures 134m long by 32m wide, with mean operating draft of 6.0m. Refer to drawing in Appendix B, Drawing No. 11011-AMC-INT-ME-DW-3001 and LCR Specification in Appendix D<\/span><\/p>\nThe barge is equipped with two pedestal cranes. The main crane is a 400MT Huisman pedestal mounted offshore crane with max. radius 64m -120MT capacity and min, radius 12m \u2013 400MT capacity. The auxiliary hoist on the Huisman crane extends up to 72m and 50MT capacity for all radius. The aux. hoist has active heave compensation and man riding capacity. Refer to drawing in Appendix D, Drawing No. A07-55000-00-10<\/span><\/p>\nThe other crane is a 150MT MacGregor Semi AHC Offshore Knuckle Jib Crane with capacity 150T at 15m radius.<\/span><\/p>\nAll of the barge accommodation is located above the main deck, and is fully air conditioned with a mess hall and recreational facilities. A helideck is located over the bow superstructure and is capable of accommodating a Sikorsky S61N and S92 (MTOW 12.8MT)<\/span><\/p>\nFollowing are the support vessels assisting the LCR during mooring system installation operation:<\/span><\/p>\n\n- B1 (ENA COMET) and T1 (ENA GRIFFIN) by EMAS-AMC<\/span><\/li>\n
- B2 (ENA TRAVELLER) and T2 (ENA SOVEREIGN) \u2013 by EMAS-AMC<\/span><\/li>\n
- F1 [LEWEK TEAL] \u2013 by EMAS-AMC<\/span><\/li>\n<\/ul>\n
SCOPE OF WORK:<\/strong><\/span><\/p>\nThe offshore installation is planned in a single campaign with Lewek Crusader as the main construction vessel. The overall Scope of Work detailed below:<\/span><\/p>\nFPSO Mooring System Installations<\/u><\/span><\/p>\n\n- 3 x 3 mooring system configuration<\/span><\/li>\n
- 9 x 40m 82\u201d driven anchor piles<\/span><\/li>\n
- 9 x 650m \u00d8114mm studless mooring chains<\/span><\/li>\n
- Mooring chains pre-tensioning<\/span><\/li>\n<\/ul>\n
FPSO Tow<\/u><\/span><\/p>\n\n- Takeover control of the FPSO at Singapore anchorage<\/span><\/li>\n
- Connection of towing equipment and AHTs<\/span><\/li>\n
- Tow from takeover location to installation location<\/span><\/li>\n<\/ul>\n
Upon arrival of FPSO in the field, hold the FPSO in position utilizing the AHTs and hook-up the mooring chains into the turret and perform final tensioning (utilizing winch on board the FPSO) and chain tail removal. When the FPSO is successfully moored in position the flexible flowline and riser installation and pre-commissioning can be completed. An outline of this is as follows:<\/span><\/p>\nFlexible Risers Installation<\/u><\/span><\/p>\n\n- 1 x 12\u201d riser (comprises of 800m of dynamic riser and 680m of static riser)<\/span><\/li>\n
- 1 x 10\u201d riser (comprises of 230m length)<\/span><\/li>\n
- Installation of 6 nos of Buoyancy modules on each riser<\/span><\/li>\n
- Midline connection and backseal test of 12\u201d flowline \/riser (between static and dynamic sections)<\/span><\/li>\n
- Subsea tie-in of 12\u201d flowline to existing flange at the WHP<\/span><\/li>\n
- Subsea tie-in of 10\u201d riser to the existing flange on the PLEM<\/span><\/li>\n
- Flood and hydro\/leak test of 12\u201d flowline\/riser<\/span><\/li>\n
- Flood and hydro\/leak test of 10\u201d riser<\/span><\/li>\n
- Backseal test of riser tie-ins and mid-line connection utilizing Kamos gasket (12\u201d dynamic and static sections)<\/span><\/li>\n
- Dewatering of both 10\u201d and 12\u201d flexible lines<\/span><\/li>\n
- Dry and nitrogen pack both the 10\u201d and 12\u201d flexible lines<\/span><\/li>\n<\/ul>\n
Document Scope<\/span><\/p>\nThe scope of work for mooring system installation includes<\/span><\/p>\n\n- Survey calibrations check against Kamelia field fixed position and pre-installation survey.<\/span><\/li>\n
- Deploying the PGF and positioning at the design pile location.<\/span><\/li>\n
- Upending the mooring pile connected with chain and stabbing it into the PGF.<\/span><\/li>\n
- Assembling the hammer with follower and stabbing on top of the pile followed by driving the pile to target depth.<\/span><\/li>\n
- Recovering the hammer and pile follower no. 1 assembly.<\/span><\/li>\n
- Laying the mooring chain and abandoning the chain end on the seabed with surface pick up rigging arragement<\/span><\/li>\n
- Relocating the PGF to the next pile location.<\/span><\/li>\n
- Completing installation of all the piles<\/span><\/li>\n
- Recovering the mooring chain of each mooring leg to tensioning tug deck, tensioning the line and abandoning on the seabed with subsea pick up rigging arrangement<\/span><\/li>\n<\/ol>\n
MY INVOLVEMENT:\u00a0<\/strong><\/span><\/p>\nI was onboard to install the FPSO<\/span><\/p>\nINTRODUCTION<\/span><\/strong><\/span><\/p>\nGeneral<\/u><\/span><\/p>\nThe FPSO Perisai Kamelia is undergoing conversion for redeployment to the Kamelia field, which is located in the North Malay Basin under PSC PM 301. This field will be the first to be brought on stream via an Early Production System. The objective of the Early Production System is to provide an early flow of gas, prior to the full field Integrated Gas Development; First gas is targeted to be the end of June 2013. The FPSO installation site is located offshore of Peninsular Malaysia approximately 150 km North East of Kota Bahru, (PM 301) Northern Malay Basin.<\/span><\/p>\nFPSO Perisai Kamelia (DNV Classed) is one of the world\u2019s largest gas FPSO. It has got a length of 263.7m and a breadth of 40.8m. The DWT would be 127,540 tons with a throughput and storage of 175 MMSCFD and 300,000 BBLS.<\/span><\/p>\nThe FPSO will be converted in Singapore to include an external turret mooring system, towed to the installation location and then moored in the vicinity of a Wellhead Platform (WHP) in approximately 55m of water via 9-leg (3×3) chain mooring consisting of 114mm chain with 82\u201d diameter piles in an approximately 595m radius from centre of rotation. The FPSO will receive fluids from the WHP via a 12\u201d, 1480m import flowline\/riser arrangement. After the gas is processed it will be exported from the FPSO via a 10\u201d, approximately 230m flexible export riser via a PLEM into the Lawit pipeline<\/span><\/p>\nEMAS AMC are being engaged in the project as the SUBCONTRACTOR responsible for the transport (tow) and installation of the FPSO, including the installation and hook-up of the mooring system and the installation and pre-commissioning of the 10\u201d riser and 12\u201d riser\/flowline.<\/span><\/p>\nEMAS AMC shall mobilize its installation vessel, the Lewek Crusader, on or about the 06t <\/sup>May 2013 for an infield date of 18 May 2012. The installation activities are estimated approximately until 23 June 2013. 2 cargo barges with their respective towing tug will be used to transport project materials and equipment.<\/span><\/p>\nLimiting Seastate<\/u><\/span><\/p>\nThis section defines the limiting seastate values for all the activities within Mooring System Installation Scope as defined within this procedure. The limiting seastate number will be based on mooring analysis report 11011-AMC-HESS-ME-RA-3111report Note that the limiting seastate values defined hereunder shall be treated as guidance values only. It will be upto the discretion of the Barge Masters, Tug Master and OCM in consultation with the CAR, to take a decision to carry out operations offshore based upon specific site conditions at the time.<\/span><\/p>\n\n\n\nOperation<\/strong><\/span><\/td>\nLimiting Guidance Seastate, Hs<\/sub> (m)<\/strong><\/span><\/td>\n<\/tr>\n\n| Overboarding and Positioning PGF<\/span><\/td>\n | 0.5<\/span><\/td>\n<\/tr>\n\n| Upending and Hang Off Pile Follower<\/span><\/td>\n | 1.5<\/span><\/td>\n<\/tr>\n\n| Upending and Stabbing Anchor pile into PGF<\/span><\/td>\n | 1.5<\/span><\/td>\n<\/tr>\n\n| Upending hammer and assembling with the follower<\/span><\/td>\n | 1.5<\/span><\/td>\n<\/tr>\n\n| Overboarding hammer\/follower assembly and pile driving<\/span><\/td>\n | 1.5<\/span><\/td>\n<\/tr>\n\n| Mooring \u00a0Chain Installation and Abandonment<\/span><\/td>\n | 2.0<\/span><\/td>\n<\/tr>\n\n| Recovery of PGF (break out suction) and repositioning<\/span><\/td>\n | 1.0<\/span><\/td>\n<\/tr>\n\n| Mooring Chain Pretensioning<\/span><\/td>\n | 1.0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Product Data & Installation Paramenters<\/u><\/span><\/p>\nCOMPANY Supplied Equipment<\/span><\/p>\nThe table below summarizes the COMPANY provided free issued permanent materials.<\/span><\/p>\n\n\n\nItem<\/strong><\/span><\/td>\nDescription<\/strong><\/span><\/td>\n<\/tr>\n\n| 1<\/span><\/td>\n | 9 off anchor piles, 40m x 82\u201d diameter<\/span><\/td>\n<\/tr>\n\n| 2<\/span><\/td>\n | 9 off connecting shackle between anchor pile and anchor chain<\/span><\/td>\n<\/tr>\n\n| 3<\/span><\/td>\n | 9 off \u00d8114mm studless mooring chains, 650m long each<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n General Installation Parameter<\/u><\/span><\/p>\nThe procedure will be based upon following installation parameters<\/span><\/p>\nGeneral<\/span><\/p>\nThe general environment conditions observed in the North Malay Basin are predominantly characterised by monsoonal conditions. The area is also susceptible to tropical cyclone conditions. During offshore installation phase, the predominant weather is South West monsoon. Refer to document no: C50883_6893 Metocean Criteria at PM301 and Bergading Fields For The Integrated Gas Development NMB, Malaysia<\/span><\/p>\nWater Depth, Tidal Range and Bathymetry<\/span><\/p>\nThe water depth in the field ranges form 50-60m and hence a mean water depth of 55m shall be used. The tidal levels derived for the field are shown in below :<\/span><\/p>\n\n\n\nTidal Descriptor<\/strong><\/span><\/td>\nHeight Relative to MSL [m]<\/strong><\/span><\/td>\nHeight Relative to LAT [m]<\/strong><\/span><\/td>\n<\/tr>\n\nHighest Astronomical Tide (HAT)<\/strong><\/span><\/td>\n0.74<\/strong><\/span><\/td>\n1.37<\/strong><\/span><\/td>\n<\/tr>\n\nMean Sea Level<\/strong><\/span><\/td>\n0.00<\/strong><\/span><\/td>\n0.63<\/strong><\/span><\/td>\n<\/tr>\n\nLowest Astronomical Tide (LAT)<\/strong><\/span><\/td>\n-0.63<\/strong><\/span><\/td>\n| 0.00<\/strong><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n | | | | | | | | | | | | | | | | | | | | | | | | | | |