MOPU BOSS 1 - Technical Specification

Technical Specification

1. General Overview

ParameterSpecification
TypeMobile Offshore Production Unit (MOPU)
ClassificationBethlehem Steel Corp MS-250
Elevating SystemYoke and Pin system with 6 yoke pins and 6 fix pins at each leg
Current LocationSEA
AvailabilityTo be Reactivated

2. Principal Dimensions

Hull

DimensionValue
Hull Length (ft)166
Hull Breadth (ft)132
Hull Depth (ft)16
Hull Transit Loadline Draft2’ – 6”

Mat

DimensionValue
Mat Length (ft)210
Mat Breadth (ft)170
Mat Depth (ft)12 (incl. 2 ft skirt)
Minimum Separation of Mat and Hull (airgap)2’ – 6”

Legs

ParameterValue
Number of Legs3
TypeTubular
Length (ft)312
Size (ft)12 (OD)
Pinholes6 pinholes spaced 6 ft

3. Capacities

Storage Capacities

FluidCapacity
Salt Water3,480.20 bbls
Potable Water885.40 bbls
Fuel Oil1,851.05 bbls

Process Design Condition

SystemSpecification
Separation1 × Production separator rated 6000 bpd / 4000 bwpd / 5MMscfd
Production Scrubber1 × 75MMscfd
Compression2 × Caterpillar Gas Engines with Ariel Compressors rated 37.5 MMscfd each
Gas Lift1 × Waukesha Gas Engine with Ariel Gas Lift Compressor rated 20MMscfd
Produced Water2 × Hydrocyclones rated 4000 bwpd each
Treatment System1 × Skimmer rated 8000 bwpd

4. Topsides Equipment

Helideck

  • Supports Bell 212 and Bell 412
  • Gross weight: 5,397 kg and 5,080 kg
  • Rotor diameter: 14.02 m and 14.63 m

Crane

  • 2 × Link-Belt ABS-218A cranes
  • 100ft boom
  • Rated at 26t capacity @ 40ft radius

Survival Capsule

  • 2 × Lifeboats
  • Total capacity: 54 persons each

5. Power Generation

EquipmentSpecification
Main Generators2 × 2100 kW Generator Motors EMD-MD1288 diesel engines
Topsides Generator2 × Waukesha Gas Engine 12VHP L5794GSI
Emergency Generator1 × 400 kW Cat D-397-TA diesel engine
Firewater Generator1 × 1250 kW Cat 3512B diesel engine

6. Firewater System

  • 2 × electric-driven submersible pumps
  • Pumpworks: 610 PWV
  • 16FXH-3 stage 2770 RPM each

7. Detailed Topsides Equipment List (Excerpt)

System Equipment Rated Capacity Qty Operating Press (psig) Operating Temp (°F) Des Press (psig) Des Temp (°F)
Production Separator5 MMscfd1150–200120350150
Production Scrubber75 MMscfd1150–200120350150
Oil Export Pump6300 bpd (each)2150/160 or 200/2002211,295150
Gas Compressor14.25 MMscfd2150/160 or 200/2001,120815300
Flare KOD85 MMscfd1658.6 to 120125<120 to 150
Hydrocyclone424 bwpd2150–200120350150
Skimmer Pump4196 bpd2ATM/274120120212
Open Drain Tank2200 bpd1ATMAmbientLiquid Full + 1 psig150
Fuel Gas Superheater1861,141/32250150
Main Hull Generator1450 hp (each)2
Black Air Start-Up System1774 scfm20.02985380
Instrument/Utility Air281 cfm20.12585500
Gas Lift Compression20 MMscfd1400/3501201000300