white rose oilfield development application - Husky Energy

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In addition, the steel FPSO will:• provide opportunity for continuous employment and a growing industrial base for the province;• provide an opportunity, on a competitive basis, for Atlantic Canada and specifically Newfoundlandfacilities and workers to continue working in the province;• increase opportunities for facilities in the province providing expertise in engineering, subsea andtopside fabrication, drilling and supply services on a competitive global basis;• establish and consolidate a proven and leading exportable technology in the province for futuredevelopments off Canada’s east coast and abroad; and• enable expertise and industry within the province to keep pace with the current needs and trends inoffshore oil and gas development around the world.1.3.2 Alternative SystemsThe physical characteristics of the four alternative systems evaluated are briefly described in the followingsubsections. Only the steel semi-submersible with a detached floating storage unit is considered technicallyand economically feasible.1.3.2.1 Concrete Floating, Production, Storage and Offloading FacilityThis concept consists of a concrete barge outfitted for production, storage and offloading in a similarfashion to a steel FPSO. Due to displacement considerations, its plan area is necessarily larger than theequivalent steel FPSO. It has the ability to disconnect, if required, due to extreme conditions oricebergs.The concrete FPSO option was considered inferior to the steel FPSO option on the basis of feasibility.There are no existing units in the world and the construction scale is so large it would create expensivedemands on construction facilities.A concrete FPSO is marginally more flexible than a steel FPSO because the vessel size has to be large tosupport its own self-weight, and this size provides additional deck space.With respect to deliverability, the concrete FPSO was considered inferior to the steel FPSO optionbecause of the likelihood of limited construction facility competition for the concrete hull and the lack ofindustry experience on the required scale.This system was evaluated as second preference on project cost and third for time to First Oil (Figure1.3-1).White Rose DA Project Summary • January 2001 Page 22
1.3.2.2 Steel Semi-Submersible Facility With and Without Integral StorageThe semi-submersible concept consists of a floating hull form with four columns connected by subsurfacepontoons. Production facilities are mounted on the facility deck. The subsea facilities are similarto those for a FPSO facility. The semi-submersible is anchored to the seabed by fixed catenary chainand wire moorings and does not ‘weather vane’. The flexible risers are fixed to a porch(s) on the semisubmersiblefacility’s hull. In the event of iceberg threat, the porch(s) could be disconnected, the riserslowered and the unit moved aside using thrusters mounted on the pontoons.Many of the key technical issues for a steel semi-submersible mirror those for a concrete semisubmersible.This option was assessed as being similar to the concrete semi-submersible in respect offlexibility, but having a higher ranking in respect of feasibility and deliverability. This higher rankingwas largely due to considerable operational experience, with almost 40 production units in operationworldwide.This system was evaluated as third preference on project cost and second on time to First Oil (Figure1.3-1). A principal reason for selecting the steel FPSO facility over the steel semi-submersible was theforecast life-cycle cost. The steel semi-submersible cost was estimated to be $190 million more than thesteel FPSO facility at the production level anticipated. Another disadvantage is the lack of existingengineering for an emergency disconnect system.1.3.2.3 Concrete Semi-Submersible Facility With and Without Integral StorageThis concept is similar to the steel semi-submersible concept, except the construction material isconcrete.The only concrete semi-submersible in existence is the Troll B structure, installed in 1995 in theNorwegian North Sea. The semi-submersible is a production facility without drilling or storagecapabilities. It has a design capacity to produce 27,000 m 3 (170,000 barrels) of oil per day. Thisstructure is very large compared with equivalent steel production units, having a plan areaapproximately 40 percent greater, a wave area more than 200 percent greater and a displacement morethan 300 percent greater. A concrete semi-submersible unit for White Rose would be smaller than theTroll B, but would still be significantly larger than a steel semi-submersible, leading to significantlyhigher mooring costs.One disadvantage of the concrete semi-submersible concept is the lack of an emergency disconnectsystem. Although feasible, this would take a reasonable amount of design development. Anothersignificant deficiency is the need for an independent means of propulsion in the event an emergencydisconnect is required.White Rose DA Project Summary • January 2001 Page 23
Page 1 and 2: WHITE ROSE OILFIELDDEVELOPMENT APPL
Page 3: TABLE OF CONTENTSPage No.1 INTRODUC
Page 6 and 7: 7.1.5 Command Structure............
Page 8 and 9: Figure 1.1-1White Rose LocationWhit
Page 10 and 11: There will be three to four drill c
Page 12 and 13: 1.2.1 Exploration HistoryThe first
Page 14 and 15: Figure 1.2-2Depletion Schedule for
Page 16 and 17: Figure 1.2-3United States Import Re
Page 18 and 19: Figure 1.2-4Selected Natural Gas Pr
Page 20 and 21: Figure 1.2-6Gas Infrastructure Inve
Page 22 and 23: Figure 1.2-7Model for Gas Developme
Page 24 and 25: These remaining five options (steel
Page 26 and 27: Figure 1.3-2Relative Technical Risk
Page 30 and 31: This system was evaluated as fourth
Page 32 and 33: Figure 1.4-1Project Development Sch
Page 34 and 35: 2.1 Regulatory RequirementsThe star
Page 36 and 37: • project summary booklet, which
Page 38 and 39: The first series of open houses fea
Page 40 and 41: 2.6 Media BriefingsHusky Oil repres
Page 42 and 43: 3 CANADA-NEWFOUNDLAND BENEFITS PLAN
Page 44 and 45: 3.1.2 Canada-Newfoundland Benefit C
Page 46 and 47: The subsea contract package will co
Page 48 and 49: 3.1.3.6 Monitoring and ReportingHus
Page 50 and 51: • The operations/production phase
Page 52 and 53: • Husky Oil’s preferred develop
Page 54 and 55: 4.1.2 White Rose Structural Geology
Page 56 and 57: 4.2.1.3 West Avalon PoolOnly one we
Page 58 and 59: Reducing oil handling capacities ha
Page 60 and 61: 4.2.2.7 Reservoir ManagementReservo
Page 62 and 63: Side scan sonar images of the White
Page 64 and 65: Generators will be sized to meet th
Page 66 and 67: 4.5.3 Marine Support VesselsHusky O
Page 68 and 69: The offshore organization will cons
Page 70 and 71: Husky Oil promotes safe operations
Page 72 and 73: Table 4.8-3Capital and Operating Co
Page 74 and 75: 5 ENVIRONMENTAL IMPACT STATEMENTThe
Page 76 and 77: The principal origins of the iceber
Page 78 and 79:
white hake and winter flounder. The
Page 80 and 81:
Produced water, although treated pr
Page 82 and 83:
opportunity for interaction with bi
Page 84 and 85:
The effects of project development,
Page 86 and 87:
Additional mitigation measures for
Page 88 and 89:
In summary, after mitigation measur
Page 90 and 91:
6 SOCIO-ECONOMIC IMPACT STATEMENTTh
Page 92 and 93:
6.1.2.1 EducationIn recent years, t
Page 94 and 95:
6.1.3.1 HousingThe number of dwelli
Page 96 and 97:
Figure 6.1-1NAFO Divisions on the G
Page 98:
During the development phase of the
Page 101 and 102:
6.2.3 Community Physical Infrastruc
Page 103 and 104:
damage or foul gear. Any damage to
Page 105 and 106:
have medical programs for their ope
Page 107 and 108:
7 SAFETY PLAN AND CONCEPT SAFETY AN
Page 109 and 110:
Hazard prevention, detection and mi
Page 111 and 112:
7.1.5 Command StructureThe command
Page 113 and 114:
7.2.1 Major Hazard IdentificationTh
Page 115 and 116:
8 REFERENCESJWEL (Jacques Whitford
Page 117 and 118:
Adams Pearson Associates Limited. 1
Page 119 and 120:
Hycal Energy Research Laboratories
Page 121:
Schlumberger. 2000. Husky Oil et al
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