Decommissioning of Platforms:On‐Shore Disposal

Dr. Robert Byrd, Ph.D., P.E.

O b 20 2010October 20, 2010

Presentation ContentsPresentation Contents

• Some History

• Pacific OCS Platforms

• On shore disposal Options• On‐shore disposal Options

Disposal History

4H to Belmont Island4H to Belmont Island

Credit to:

4H Platform Decommissioning

• Jacket components transported to 20 acre site on Terminal Island

• Topsides and jacket packages limited to 30 feet in heights

• 10,000 tons of steel

• 3,000 tons of misc. materials

• 2,700 tons of marine growth

Credit to:

Platform Components and Marine Growth

Credit to:

Belmont Island Overview

Credit to:Credit to:

South Tower Disposition 

Credit to:

Boat Landing Removal

Credit to:

Onshore Concrete, Steel and Wood Handling

Credit to:

Demolition  Steel Debris

Debris

C

Wood Decking and Pilings

Concrete Rubble

Credit to: Wood Decking and Pilings

C P ifi OCS IMMS POCSR Decommissioning Cost Update 2010

Current Pacific OCS InventoryPlatform

NameWater

Depth (ft)# Piles

Main/SkirtTotal

WeightA 188 12/0 6,405B 190 12/0 6,535C 192 12/0 5,796

Edith 161 12/0 9,147Ellen 265 8/0 14,016Elly 255 12/0 9,400,

Eureka 700 0/24 38,360Gail 739 8/12 33,924Gilda 205 12/0 11,690Gina 95 6/0 1,426Grace 318 12/8 11 256Grace 318 12/8 11,256

Habitat 290 8/0 9,044Harmony 1,198 8/20 78,380Harvest 675 8/20 32,815Henry 173 8/0 4,046

Heritage 1,075 8/26 67,515Hermosa 603 8/8 29,516Hidalgo 430 8/8 22,478

Hillhouse 190 8/0 5,929Hogan 154 12/0 5,497g ,Hondo 842 8/12 28,713

Houchin 163 8/0 5,977Irene 242 8/0 8,646

Pacific Outer Continental Shelf 

Pl tf W t D th (ft) J k t W i ht ( t)Platform Water Depth (ft) Jacket Weight (st)Hidalgo 430 10,950Hermosa 603 17,000Harvest 675 16,633Eureka 700 18,500Gail 739 18 300Gail 739 18,300Hondo 842 12,200Heritage 1,075 32,420Harmony 1,198 42,900

ScenarioMMS POCSR Decommissioning Cost Update 2010

Platform Year InstalledWater

Depth (feet)Deck

Wt. (tons)Jacket

Wt. (tons)Proj. Removal

Timeframe

Projected DB Lift

Capability (tons)Project I – Eastern Santa Barbara Channel

Hogan 1967 154 2,259 1,263 2015-2020 500Houchin 1968 163 2,591 1,486 2015-2020 500

Project II – South Coast (Los Angeles/Orange County)Eureka 1984 700 8,000 19,000 2015-2020 2,000

Elly 1980 255 4,700 3,300 2015-2020 2,000Ellen 1980 265 5,300 3,200 2015-2020 2,000Edith 1983 161 4 134 3 454 2015-2020 2 000Edith 1983 161 4,134 3,454 2015-2020 2,000

Project III – Eastern Santa Barbara ChannelA 1968 188 1,357 1,500 2015-2020 2,000B 1968 190 1,357 1,500 2015-2020 2,000C 1977 192 1,357 1,500 2015-2020 2,000

Henry 1979 173 1,371 1,311 2015-2020 2,000Hillhouse 1969 190 1,200 1,500 2015-2020 2,000

Gina 1980 95 447 434 2015-2020 2,000Project IV – Santa Barbara Channel/Southern Santa Maria Basin

Gilda 1981 205 3,792 3,220 2015-2020 2,000Irene 1985 242 2,500 3,100 2015-2020 2,000

Habitat 1981 290 3 514 2 550 2015-2020 2 000Habitat 1981 290 3,514 2,550 2015-2020 2,000Project V – Santa Barbara Channel/Southern Santa Maria Basin

Gail 1987 739 7,693 18,300 2020-2025 4,000Grace 1979 318 3,800 3,090 2020-2025 4,000

Hermosa 1985 603 7,830 17,000 2020-2025 4,000Harvest 1985 675 9,024 16,633 2020-2025 4,000Hildalgo 1986 430 8,100 10,950 2020-2025 4,000

Project VI – Western Santa Barbara ChannelHondo 1976 842 8,450 12,200 2025-2030 4,000

Harmony 1989 1,198 9,839 42,900 2025-2030 4,000Heritage 1989 1,075 9,826 32,420 2025-2030 4,000

Pl f R lMMS POCSR Decommissioning Cost Update 2010

Platform Removal

Jacket and Pile RemovalAbrasively sever piles 15ft below mudline

Removed in one piece or cut into sections small enough (40-50% of full crane capacity) for the DB crane to remove safely andcrane to remove safely and efficiently

Transport to shore via cargo bargep g g

U.S. Minerals Management ServiceCargo Barge Loadout

Gail TopsidesGail - Topsides

300 feet

1. FlareBoom 140'

X 12'

100 feet3. Compressor/

Scrubber130' x 64'

4. Driller130' X 50'

300 feet

5. 6 Generator/100 feet

Quarters/Helideck70' X 70'

6. Generator/Switchgear130' X 64'

2. Sulferox40' X 50'

400 feet

120 feet

40 X 50

7. West Deck 8. East Deck120 feet 141' X 109' 136' X 109'

U.S. Minerals Management ServiceCargo Barge Loadout

Gail - Complete Removal400 f t400 feet

100 feet2a.

112' L X 76' WX 130' H

1a.65' L X90' W X118' H

2b.112 L X 76"W X 130' H

1b.65' L X90' W X118' H

300 feet

100 feet

300 feet

100 feet3a.

124' L X 82' W X

4a.137' L X 88' W X 75'

4b.137' L X 88' W X 75'

3b.124' L X 82' W X

400 feet400 feet

100 feet 124 L X 82 W X75' H H H75' H

100 feet100 feet 5a.150' L X 95' W X 80' H6a.

164' L X 102' W X 85' H5b.150' L X 95' W X 80' H

6b.164' L X 102' W X 85' H

150 feet

450 feet

120 feet

400 feet

7a.180' L X 110' W X 95' H

8a.196' L X 118' W X 112' H

7b.180' L X 110' W X 95' H

8b.196' L X 118' W X 112' H150 feet120 feet 180' L X 110' W X 95' H 196 L X 118 W X 112 H180' L X 110' W X 95' H 196 L X 118 W X 112 H

Proposed On‐shore Disposal of Chevron Platforms at SchnitzerChevron Platforms at Schnitzer 

Steel in Portland, OR

Offloading

Other options:

Jacket Re-floatationJacket Re-floatation

M i l Di lMMS POCSR Decommissioning Cost Update 2010

Materials Disposal

StructuresLarge Scale Capacity FacilityProcessing and Disposal at LA / Long Beach Facilities$384 per ton

Conductors, Pipelines and Power CablesSmall Scale Capacity FacilityTruck and Dispose of Inland Near B k fi ld CABakersfield, CA$123 per ton

M i l Di lMMS POCSR Decommissioning Cost Update 2010

Materials Disposal

Schnitzer Steel - Portland, ORFight a 0 5 kt counter flow currentFight a 0.5 kt counter flow currentSuperfund Site

SA Recycling -LA/Long Beach FacilitiesLA/Long Beach Facilities

Nearest LocationBest Option from a liability standpoint

Baja Penninsula MexicoBaja Penninsula, MexicoTravel with 0.5 kt currentCheaper, but more liability and no guarantee of availabilityguarantee of availability

Reefing options not considered for this study due to current political atmosphere

On‐shore Disposal SummaryOn shore Disposal Summary• Approximately 10 acres/platform needed for on shore disposalneeded for on‐shore disposal.

• Re‐floatation as a single piece may be i bl i f l j kviable option for larger jackets.

• Disposal could be done in LA/Long Beach harbor areas, but will have air quality issues.

• Mexico may be more attractive if environmental issues could be worked out.

Questions/DiscussionQuestions/Discussion