Stena Spey

The Stena Spey is a Friede & Goldman L907 (enhanced Pacesetter) twin pontoon, column stabilised self propelled, semi submersible offshore drilling unit. The Stena Spey has a SBOP capability for a water depth of 5,000ft using 18 ¾” – 15,000psi Hydril BOP and Vetco MR-6C riser.

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Vessel Specifications

General Information
Rig Type Semi Submersible
Design Enhanced Pacesetter
Construction Yard Daewoo, Korea Friede & Goldman L-907
Year Delivered 1983
Classification DNV Class +1A1 Column Stabilised Drilling Unit
Flag UK
Station Keeping Anchored:  12T Bruce MK4, HHP anchors
Max Water Depth 457m
Max Drilling Depth 7620m
Helideck Designed for EC225, S92 & S61
Accommodation 120 persons
Drilling Equipment
Mast/Derrick NorMar – 700 tonnes
Hoist/Drawworks National/1625 DE
Motion Compensator Brown Brothers, Stroke 20ft 600,000 lbs
Top Drive Maritime Hydraulics 650 tons
Pipe Handling Maritime Hydraulics Bridge Racking Crane
Offline Stand Build N/A
Mud Pumps 3 x National 12-P-160
Shale Shakers 4 x Brandt – VSM 300
Capacities
Liquid Mud 2148bbls
Drill Water 10, 472bbls
Potable Water 2113 bbls
Fuel Oil 10,330 bbls
Bulk  Mud/Bent 7440/3662 ft3
Bulk Cement 8782 Cubic Meters
Base Oil 1824 bbls
Brine 2924 bbls
Sack Material 2000 Sacks
Dimensions / Loading
Length 236ft
Breadth 208ft
Moonpool 83' 4" x 20' 8"
Operating Draft 65ft
Transit Draft 24.9ft
VDL (Operating) 3340Mt
Well Control Equipment
BOP Hydril 18 ¾ ” 15,000 psi WP H2S
LMRP 1 x Hydril  Annular 5K 18 ¾ “
Wellhead Connector 1 x 18 ¾ GE Vetco 15K EBF
Control System Cameron Direct Hydraulic
Riser Vetco / MR-6C
Riser Tensioners 10 x Brown Brothers  80k
Choke & Kill Manifold Cameron  3 1/8” – 15K
Diverter GE Vetco – KFDS – CSO – 49 ½”
Machinery/Hoisting/Station Keeping Equipment
Main Power 4 x Bergen KVGB 12 diesel engines
Generator Rated Output: 2750kVA
Emergency Power HEDEMORA/V6B-12
Generator Rated Output: 813kVA
DP System N/A
Thrusters 2 x Lawrence Scott, E126BO1\4
Mooring system 8 x 3” K4 anchor chains average length 1500mtrs
Deck Cranes 2 x NOV National OS435 1 x NOV OC3500LE
Riser Crane N/A
BOP Handling  1 x NorMar BOP Transporter