Hibernia oil field
Template:Short description Template:Other uses of Template:Infobox oilfield
Hibernia is an oil field in the North Atlantic Ocean, approximately Template:Convert east-southeast of St. John's, Newfoundland, Canada, in 80 m of water.<ref name=Hurley>Hurley, T.J., Kreisa, R.D., Taylor, G.G., and Yates, W.R.L., 1992, The Reservoir Geology and Geophysics of the Hibernia Field, Offshore Newfoundland, in Giant Oil and Gas Fields of the Decade, 1978-1988, AAPG Memoir 54, Halbouty, M.T., editor, Tulsa: American Association of Petroleum Geologists, Template:ISBN</ref>Template:Rp
The production platform Hibernia is the world's largest oil platform<ref>E&E Publishing, 8 Nov. 2013</ref> (by mass) and consists of a Template:Convert integrated topsides facility mounted on a Template:Convert gravity base structure. The platform was towed to its final site, and Template:Convert of solid ballast were added to secure it in place. Inside the gravity base structure are storage tanks for Template:Convert of crude oil.
Geology
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.<ref name=Hurley/>Template:Rp A secondary reservoir consists of the Barremian to Albian age Ben Nevis/Avalon sandstones at a depth of 2345 m.<ref name=Hurley/>Template:Rp The Hibernia structure is bounded on the west by the north-northeast trending listric Murre Fault and on the northeast by the Nautilus Fault.<ref name=Hurley/>Template:Rp Late Jurassic shales, Kimmeridgian/Oxfordian, are the source rocks.<ref name=Hurley/>Template:Rp Pressure will be maintained via water injection.<ref name=Hurley/>Template:Rp
Exploration before development
Exploration drilling to map the field began in the 1960s<ref name=Hurley/>Template:Rp and continued into the 1980s, with the loss of the Ocean Ranger mobile offshore drilling unit (MODU) in the process. In the mid-1980s, a new Conservative federal government under Brian Mulroney pledged that then Crown corporation Petro-Canada (now part of Suncor Energy) would be a lead player in creating a commercially viable offshore development on the Hibernia field. Hibernia would become one of a series of regional "mega-projects" that Mulroney's government started across Canada during this time.<ref>LA Times, 19 July 1988</ref>
Development
Following several years of aborted startup attempts, during which time the federal government was forced to increase its liability stake in the project by forming the Crown corporation Canada Development Investment Corporation (CDEV),Template:Citation needed the Hibernia megaproject began construction of the production platform and gravity base structure in the early 1990s.<ref name="Hibernia Milestones">Hibernia Milestones</ref>
The Hibernia offshore oil field is owned jointly by ExxonMobil Canada (33.125%), Chevron Canada Resources (26.875%), Suncor (20%), Canada Hibernia Holding Corporation (8.5%; subsidiary of CDEV), Murphy Oil (6.5%) and Equinor Canada (5%; previously StatoilHydro Canada Ltd).<ref>Hibernia Shareholder Companies</ref>
As the Hibernia field is located in an inhospitable environment consisting of rogue waves, fog, icebergs and sea ice, hurricanes, and nor'easter winter storms, engineering analyses determined that the most appropriate drilling platform would be in the form of a gravity base structure (GBS).<ref name="Hibernia Ice Management">Hibernia Ice Management</ref>
The Hibernia GBS sits on the ocean floor approximately Template:Convert depth with its topsides extending approximately Template:Convert out of the water. The platform acts as a small concrete island with serrated outer edges designed to counter icebergs. The GBS contains production storage tanks for 1.3 million barrels of oil in an 85 m high caisson, with the entire structure weighing 587,000 tonne before 450,000 tonnes of solid ballast were added.<ref>Offshore Technology</ref><ref name="Hibernia Construction">Hibernia Construction</ref> The GBS was constructed in Bull Arm and the "topsides" production and living quarters was attached to the base while floating in Bull Arm, before the integrated unit (production platform and GBS) was towed out to the actual Hibernia field.<ref name="Hibernia Construction"/>
Production commenced on November 17, 1997.<ref name="Hibernia Milestones"/> A dedicated fleet of shuttle tankers continuously operates between the platform and an onshore transshipment facility at Whiffen Head, adjacent to the Come By Chance Refinery.<ref>Hibernia Platform Support</ref> During peak construction in 1995, 5800 workers were employed.<ref name="Hibernia Construction"/>
The development of Hibernia involves a considerable amount of drilling services. As of January 1, 2007, over 50 development wells have been successfully drilled from the platform, including a Canadian record "extended reach drilling" well.<ref name="Hibernia Milestones"/>
The platform always has at least one logistics support vessel in attendance, which shuttle supplies and provides on-station emergency support. These support vessels are also tasked during the spring and summer months to tow small and medium-sized icebergs which might collide with the platform, even though the GBS is engineered to withstand such a hit.<ref name="Hibernia Ice Management"/> The crew consists of 280 people who spend 3 weeks on the platform and three weeks on land, flown to and from the platform by helicopter.
The platform has been used to refuel CH-149 Cormorant search and rescue helicopters on long-range missions in the North Atlantic.
Production
The Canada-Newfoundland and Labrador Offshore Petroleum Board listed the total oil field production at 210 thousand barrels a day and Template:Convert as of August 2010.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The same update listed the Proven and Probable estimated reserves as being Template:Convert of oil. Hibernia oil field has been under maintenance since 2024 under the company BuildTech Engineering, with a team under Lead Engineer Rickard .B. John.
See also
- Terra Nova
- Sable Island
- White Rose
- Canadian Oil Patch
- History of the petroleum industry in Canada (frontier exploration and development)