An oil platform is a large structure with facilities to extract and process petroleum and natural gas that lie in rock formations beneath the seabed. Many oil platforms will also have facilities to accommodate the workers, although it is also common to have a separate accommodation platform bridge linked to the production platform. Most commonly, oil platforms engage in activities on the continental shelf, though they can also be used in lakes, inshore waters, and inland seas. Depending on the circumstances, the platform may be fixed to the ocean floor, consist of an artificial island, or float. In some arrangements the main facility may have storage facilities for the processed oil. Remote subsea wells may also be connected to a platform by flow lines and by umbilical connections. These sub-sea facilities may include one or more subsea wells or manifold centres for multiple wells.
Hydrocarbon exploration is the search by petroleum geologists and geophysicists for deposits of hydrocarbons, particularly petroleum and natural gas, in the Earth's crust using petroleum geology.
The Corrib gas project is a developed natural gas deposit located in the Atlantic Ocean, approximately 83 kilometres (52 mi) off the northwest coast of County Mayo, Ireland. The project includes a natural gas pipeline and an onshore gas processing plant, which commenced gas production in 2015. During its development, the project attracted considerable opposition.
The Sable Offshore Energy Project (SOEP) is a consortium based in Halifax, Nova Scotia which explores for and produced natural gas near Sable Island on the edge of the Nova Scotian continental shelf in eastern Canada. SOEP produced between 400 and 500 million cubic feet (14,000,000 m3) of natural gas and 20,000 barrels (3,200 m3) of natural gas liquids daily until 2018.
Petroleum production in Canada is a major industry which is important to the overall economy of North America. Canada has the third largest oil reserves in the world and is the world's fourth largest oil producer and fourth largest oil exporter. In 2019 it produced an average of 750,000 cubic metres per day (4.7 Mbbl/d) of crude oil and equivalent. Of that amount, 64% was upgraded from unconventional oil sands, and the remainder light crude oil, heavy crude oil and natural-gas condensate. Most of the Canadian petroleum production is exported, approximately 600,000 cubic metres per day (3.8 Mbbl/d) in 2019, with 98% of the exports going to the United States. Canada is by far the largest single source of oil imports to the United States, providing 43% of US crude oil imports in 2015.
Exploration for petroleum in the Arctic is expensive and challenging both technically and logistically. In the offshore, sea ice can be a major factor. There have been many discoveries of oil and gas in the several Arctic basins that have seen extensive exploration over past decades but distance from existing infrastructure has often deterred development. Development and production operations in the Arctic offshore as a result of exploration have been limited, with the exception of the Barents and Norwegian seas. In Alaska, exploration subsequent to the discovery of the Prudhoe Bay oilfield has focussed on the onshore and shallow coastal waters.
Offshore drilling is a mechanical process where a wellbore is drilled below the seabed. It is typically carried out in order to explore for and subsequently extract petroleum that lies in rock formations beneath the seabed. Most commonly, the term is used to describe drilling activities on the continental shelf, though the term can also be applied to drilling in lakes, inshore waters and inland seas.
Subsea technology involves fully submerged ocean equipment, operations, or applications, especially when some distance offshore, in deep ocean waters, or on the seabed. The term subsea is frequently used in connection with oceanography, marine or ocean engineering, ocean exploration, remotely operated vehicle (ROVs) autonomous underwater vehicles (AUVs), submarine communications or power cables, seafloor mineral mining, oil and gas, and offshore wind power.
Canada's early petroleum discoveries took place near population centres or along lines of penetration into the frontier.
"Offshore", when used in relation to hydrocarbons, refers to operations undertaken at, or under the, sea in association with an oil, natural gas or condensate field that is under the seabed, or to activities carried out in relation to such a field. Offshore is part of the upstream sector of the oil and gas industry.
Offshore oil and gas in the United States provides a large portion of the nation’s oil and gas supply. Large oil and gas reservoirs are found under the sea offshore from Louisiana, Texas, California, and Alaska. Environmental concerns have prevented or restricted offshore drilling in some areas, and the issue has been hotly debated at the local and national levels.
Offshore drilling for oil and gas on the Atlantic coast of the United States took place from 1947 to the early 1980s. Oil companies drilled five wells in Atlantic Florida state waters and 51 exploratory wells on federal leases on the outer continental shelf of the Atlantic coast. None of the wells were completed as producing wells. All the leases have now reverted to the government.
Desire Petroleum plc was an oil and gas exploration company headquartered in Malvern, England. It owned offshore exploration and production licences in the North Falkland Basin in the waters north of the Falkland Islands and its core focus was to develop the basin into a major new hydrocarbon province.
The inclusion of unconventional shale gas with conventional gas reserves has caused a sharp increase in estimated recoverable natural gas in Canada. Until the 1990s success of hydraulic fracturing in the Barnett Shales of north Texas, shale gas was classed as "unconventional reserves" and was considered too expensive to recover. There are a number of prospective shale gas deposits in various stages of exploration and exploitation across the country, from British Columbia to Nova Scotia.
Sara and Myra were two Israeli offshore drilling licenses located west of Netanya, Israel. The licenses expired on July 13, 2015. Exploratory drilling in the license area in 2012 was unsuccessful, but seismic studies indicated the possibility of oil and gas at deeper strata that were not explored.
The Orphan Basin is an area approximately 400 km east-north-east of St. John's, Newfoundland and Labrador in Canada. Two exploratory oil wells have been drilled there as it is estimated to have oil reserves of 6-8 billion barrels. Chevron intends to drill a third well in 2012.
JASCO Applied Sciences provides scientific consulting services and equipment related to underwater acoustics. JASCO operates from 7 international locations and provides services to the oil and gas, marine construction, energy, renewable energy, fisheries, maritime transport and defence sectors. The head office is located in Halifax, NS Canada. JASCO employs acousticians, bioacousticians, physicists, marine mammal scientists, engineers, technologists, and project managers.
Cove Energy plc, also known as Cove, was a London-headquartered oil and gas exploration company with assets in East Africa. The company was created in June 2009. In 2012, following significant gas discoveries offshore Mozambique, Royal Dutch Shell and PTT Exploration and Production (PTTEP), a subsidiary of Thailand's national oil company PTT Public Company Limited, engaged in a prominent bidding war to acquire Cove. Ultimately, the company was sold in August 2012 to PTTEP.
Fracking in Canada was first used in Alberta in 1953 to extract hydrocarbons from the giant Pembina oil field, the biggest conventional oil field in Alberta, which would have produced very little oil without fracturing. Since then, over 170,000 oil and gas wells have been fractured in Western Canada. Fracking is a process that stimulates natural gas or oil in wellbores to flow more easily by subjecting hydrocarbon reservoirs to pressure through the injection of fluids or gas at depth causing the rock to fracture or to widen existing cracks.
In addition to terrestrial oil wells, Canada also extracts oil via offshore drilling.
