The Hibernia Gravity Base Structure is an offshore oil platform on the Hibernia oilfield southeast of St. John's, Newfoundland, Canada. A 600-kilotonne gravity base structure (GBS) built after the Ocean Ranger disaster, it sits in 80 metres (44 fathoms) of water directly on the floor of the North Atlantic Ocean 315 kilometres (196 mi) off St. John's, Newfoundland.
This GBS is designed to resist iceberg forces and supports a topsides weighing 39,000 tonnes at towout, increasing to 58,000 tonnes in operation. There were significant challenges faced by the engineering firms Doris Development Canada, Morrison Hershfield and Mobil Technology in developing a structural solution with adequate strength which was also constructible. In addition, unusual design situations resulted from the construction methods and the structural components used. More details
Hibernia oil field is in the North Atlantic Ocean, approximately 315 kilometres (196 mi) east-southeast of St. John's, Newfoundland, Canada, in 80 m of water.
The production platform Hibernia is the world's largest oil platform (by weight) and consists of a 37,000 t (41,000 short tons) integrated topsides facility mounted on a 600,000 t (660,000 short tons) gravity base structure. The platform was towed to its final site, and 450,000 t (500,000 short tons) of solid ballast were added to secure it in place. Inside the gravity base structure are storage tanks for 1.3 million barrels (210,000 m3) of crude oil.
The field was discovered in 1979 with the Hibernia P-15 well, and is located on the Grand Banks of Newfoundland in the northwest sector of the Jeanne d'Arc Basin, the Cretaceous primary reservoir being the Berriasian and Valanginian age river delta Hibernia sandstones at a depth of 3720 m, structurally trapped in a faulted anticline. A secondary reservoir consists of the Barremian to Albian age Ben Nevis/Avalon sandstones at a depth of 2345 m. The Hibernia structure is bounded on the west by the north-northeast trending listric Murre Fault and on the northeast by the Nautilus Fault. and 42 Late Jurassic shales, Kimmeridgian/Oxfordian, are the source rocks. Pressure will be maintained via water injection. More details
This GBS is designed to resist iceberg forces and supports a topsides weighing 39,000 tonnes at towout, increasing to 58,000 tonnes in operation. There were significant challenges faced by the engineering firms Doris Development Canada, Morrison Hershfield and Mobil Technology in developing a structural solution with adequate strength which was also constructible. In addition, unusual design situations resulted from the construction methods and the structural components used. More detailsHibernia oil field is in the North Atlantic Ocean, approximately 315 kilometres (196 mi) east-southeast of St. John's, Newfoundland, Canada, in 80 m of water.
The production platform Hibernia is the world's largest oil platform (by weight) and consists of a 37,000 t (41,000 short tons) integrated topsides facility mounted on a 600,000 t (660,000 short tons) gravity base structure. The platform was towed to its final site, and 450,000 t (500,000 short tons) of solid ballast were added to secure it in place. Inside the gravity base structure are storage tanks for 1.3 million barrels (210,000 m3) of crude oil.
The field was discovered in 1979 with the Hibernia P-15 well, and is located on the Grand Banks of Newfoundland in the northwest sector of the Jeanne d'Arc Basin, the Cretaceous primary reservoir being the Berriasian and Valanginian age river delta Hibernia sandstones at a depth of 3720 m, structurally trapped in a faulted anticline. A secondary reservoir consists of the Barremian to Albian age Ben Nevis/Avalon sandstones at a depth of 2345 m. The Hibernia structure is bounded on the west by the north-northeast trending listric Murre Fault and on the northeast by the Nautilus Fault. and 42 Late Jurassic shales, Kimmeridgian/Oxfordian, are the source rocks. Pressure will be maintained via water injection. More details