An oil platform, offshore platform, or offshore drilling rig is a large structure with facilities for well drilling to explore, extract, store, and process petroleum and natural gas which lies in rock formations beneath the seabed. Many oil platforms will also contain facilities to accommodate their workforce. 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, may consist of an artificial island, or may float. Remote subsea wells may also be connected to a platform by flow lines and by umbilical connections. These sub-sea solutions may consist of one or more subsea wells, or of one or more manifold centres for multiple wells.
Offshore construction is the installation of structures and facilities in a marine environment, usually for the production and transmission of electricity, oil, gas and other resources. It is also called maritime engineering.
Singapore Petroleum Company Limited, in short SPC, is a subsidiary of Chinese state-owned company PetroChina. It is involved in the exploration and production of petroleum, refining, trading and petroleum product distribution.
CNOOC Limited (中国海洋石油有限公司) is China's largest producer of offshore crude oil and natural gas. It is a major subsidiary of China National Offshore Oil Corporation (CNOOC) and has been listed in Hong Kong SEHK: 883 and in New York NYSE: CEO since February 2001. It was admitted as a constituent stock of the Hang Seng Index in July 2001. In September 2013 it was listed on the Toronto Stock Exchange following its acquisition of Canadian oil and gas company Nexen Inc.
The Corrib gas project entails the extraction of a natural gas deposit off the northwest coast of Ireland. The project includes a development of the Corrib gas field, and constructions of the natural gas pipeline and a gas processing plant. The project has attracted considerable opposition.
CNOOC Petroleum North America ULC, originally founded in 1971 as Nexen, is a Chinese-owned oil and gas company based in Calgary, Alberta. On 25 February 2013, Nexen became a wholly owned subsidiary of Hong Kong-based CNOOC Limited. From 25 February 2013 through 31 December 2018 (inclusive), it continued to operate with the Nexen name. Following both a legal change of name in its jurisdiction, British Columbia, on 31 December 2018, the Nexen name disappeared from both legal and practical perspectives, and it became known as CNOOC Petroleum North America ULC henceforth. Simultaneously and with the same date of effectiveness, related Nexen subsidiaries and affiliates changed both their legal and branding names. Its American depository receipts remain concurrently traded on the TSX and its ultimate parent company, CNOOC Limited, remains a foreign reporting issuer in Canada.
Kashagan Field is an offshore oil field in Kazakhstan's zone of the Caspian Sea. The field, discovered in 2000, is located in the northern part of the Caspian Sea close to Atyrau and is considered the world's largest discovery in the last 30 years, combined with the Tengiz Field.
A crane vessel, crane ship or floating crane is a ship with a crane specialized in lifting heavy loads. The largest crane vessels are used for offshore construction. Conventional monohulls are used, but the largest crane vessels are often catamaran or semi-submersible types as they have increased stability. On a sheerleg crane, the crane is fixed and cannot rotate, and the vessel therefore is manoeuvered to place loads. As of 2019, the largest crane vessel in the world is the CNOOC Limited owned Lanjing, having 3 cranes of capacities 7500 tonnes, 4000 tonnes and 1600 tonnes.
Saipem S.p.A. is an Italian oil and gas industry contractor. It was a subsidiary of Italian energy company Eni, which owned approximately 30% of Saipem's shares until 2016. Saipem has been contracted for designing and constructing several pipelines, including Blue Stream, Greenstream, Nord Stream and South Stream.
Pioneering Spirit is the world's largest vessel by gross tonnage. It was designed for the single-lift installation and removal of large oil and gas platforms and the installation of record-weight pipelines.
The impact of the petroleum industry in China has been increasing globally as China is the fourth-greatest oil producer in the world.
Allseas Group S.A. is a Swiss-based offshore contractor specialising in pipelay, heavy lift and subsea construction. The company, founded in 1985 by owner and president Edward Heerema, employs 4,000 people and operates worldwide.
A pipelaying ship is a maritime vessel used in the construction of subsea infrastructure. It serves to connect oil production platforms with refineries on shore. To accomplish this goal a typical pipelaying vessel carries a heavy lift crane, used to install pumps and valves, and equipment to lay pipe between subsea structures.
The Dangote Group is a Nigerian multinational industrial conglomerate, founded by Aliko Dangote. It is the largest conglomerate in West Africa and one of the largest on the African continent. The group employs more than 30,000 people, generating revenue in excess of US$4.1 billion in 2017.
China National Offshore Oil Corporation, or CNOOC Group, is one of the largest national oil companies in China. It is the third-largest national oil company in the People's Republic of China, after CNPC and China Petrochemical Corporation. The CNOOC Group focuses on the exploitation, exploration and development of crude oil and natural gas in offshore China, along with its subsidiary COOEC.
Commercial offshore diving, sometimes shortened to just offshore diving, generally refers to the branch of commercial diving, with divers working in support of the exploration and production sector of the oil and gas industry in places such as the Gulf of Mexico in the United States, the North Sea in the United Kingdom and Norway, and along the coast of Brazil. The work in this area of the industry includes maintenance of oil platforms and the building of underwater structures. In this context "offshore" implies that the diving work is done outside of national boundaries. Technically it also refers to any diving done in the international offshore waters outside of the territorial waters of a state, where national legislation does not apply. Most commercial offshore diving is in the Exclusive Economic Zone of a state, and much of it is outside the territorial waters. Offshore diving beyond the EEZ does also occur, and is often for scientific purposes.
A submarine pipeline is a pipeline that is laid on the seabed or below it inside a trench. In some cases, the pipeline is mostly on-land but in places it crosses water expanses, such as small seas, straits and rivers. Submarine pipelines are used primarily to carry oil or gas, but transportation of water is also important. A distinction is sometimes made between a flowline and a pipeline. The former is an intrafield pipeline, in the sense that it is used to connect subsea wellheads, manifolds and the platform within a particular development field. The latter, sometimes referred to as an export pipeline, is used to bring the resource to shore. Sizeable pipeline construction projects need to take into account many factors, such as the offshore ecology, geohazards and environmental loading – they are often undertaken by multidisciplinary, international teams.
TurkStream is a natural gas pipeline running from Russia to Turkey. It starts from Russkaya compressor station near Anapa in Russia's Krasnodar Region, crossing the Black Sea to the receiving terminal at Kıyıköy.
Wushi Oil Field is an oil and gas field located in the South China Sea Exclusive Economic Zone, 30 miles from Zhanjiang, off the southern coast of Guangdong, China.
Lanjing (蓝鲸) is a self-propelled, deep water crane vessel, owned by China National Offshore Oil Corporation (CNOOC), the national oil exploration company of China, through its Hong Kong-listed subsidiary CNOOC Limited. Built in 2012, it is one of the six large crane barges owned by COOEC and CNOOC, namely HYSY201, HYSY 202, Lanjing, Blue Xinjiang, Binhai 109, HYSY286, HYSY289 and HYSY291.
