Type:
Gas
Facility:
Storage
Water Depth:
105
Installed:
1986
meters
Block:
Gaviota
Design:
Fixed steel
Sub Structure:
10500
Topsides Wgt:
3000
tonnes
tonnes
Intro
The Gaviota facility, located 8 km off the coast of Bermeo in the Bay of Biscay, Spain, is an underground natural gas storage facility. It was originally a Repsol gas field that was converted into a key, fixed-platform storage facility, now owned and operated by Enagás. It consists of an offshore platform connected via a subsea pipeline to an onshore processing plant. Its design is a fixed steel jacket platform anchored to the seabed with 20 pylons.
Field
The reservoir is a depleted gas field located 2,150 m deep in fractured limestone formations.
Surface Area: Covers approximately 64km2.
Capacity: Operational Capacity: ~979 million m3 (standard gas).
Total Storage Capacity: ~2,681 million m3 (including cushion gas).
Daily Flow: Injection capacity of ~4.5 million m3/day and extraction capacity of ~5.7 million m3/day.
Facilities
Drilling & Workover: Includes a recently revamped drilling rig used for well maintenance and workover campaigns.
Compression & Processing: Equipment for gas injection and extraction, including sensors and a flare system for safe disposal of excess waste gases.
Power & Electrical: Modernised electrical system featuring a 30 kV main substation, 6 kV and 0.4 kV switchgears, and integration with a Distributed Control System (DCS).
Support Systems: Custom Marine Growth Prevention System (MGPS) treating up to 3,000 of seawater per hour to protect pipes from corrosion and incrustation.
Staff Amenities: On-platform accommodation and a heliport for personnel transport.
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