Rig Data: West Alpha

Rig Name: West Alpha
Rig Manager: North Atlantic Drilling Ltd.
Rig Owner: North Atlantic Drilling Ltd.
Competitive Rig: Yes
Rig Type: Semisub
Semisub Generation: 4
Rig Design: Dyvi Drilling Ultra Yatzy
Rated Water Depth: 2,000 ft
Drilling Depth: 22,000 ft
rig photo
Rig Contract & Operating Status
Operating Status: Drilling
Operator: ExxonMobil
Contract start date, day rate, date available, future contract details, and more available via RigLogix.
Rig Location
Region: Europe - North Sea
Country: Norway
Current Water Depth: --
Location start date, end date, well location, past and future locations, and more available via RigLogix.
Rig Construction Details
Classification: DNV
Rig Design: Dyvi Drilling Ultra Yatzy
Built By: Nippon Kokan  at the Tsu Works, Japan shipyard
Delivery Year: 1986
Flag: Panama
Construction costs, dimensions, capacities, and dozens of other fields of data on each rig are available via RigLogix.
Rig Equipment
Derrick: Maritime Hydraulics 174' x 40' x 40'; Capacity: 1,300,000 lbs
Drawworks: Wirth GH 3000E 3,000 HP
Mud Pumps: 3 x Wirth TPK-7 triplex, 1600 HP
Top Drive: Maritime Hydraulics DDM-650
Rotary Table: Wirth 49.5 in. diameter Model RTSS 495
Detailed specs on each piece of rig equipment from BOPs to Winches are available via RigLogix. More than 100 searchable data points.

Offshore Rig Utilization Last 12 Months Utilization Graph Legend
Sedco 714
Sedco 714
Manager: Transocean Ltd.
Location: Europe - North Sea
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