# Transocean

Transocean is de grootste offshoreboormaatschappij. Het ontstond in 2007 uit de fusie tussen Transocean Sedco Forex en GlobalSantaFe. Beiden waren ook fusiebedrijven met een lange geschiedenis. Het beheert een grote vloot van halfafzinkbare platforms (semi's) en boorschepen.
In 2010 kreeg een van de semi's van Transocean, de Deepwater Horizon, een blowout waarbij elf bemanningsleden omkwamen. Doordat de eruptieafsluiter (BOP) niet gesloten kon worden, resulteerde dit in de olieramp in de Golf van Mexico, de grootste milieuramp in de Amerikaanse geschiedenis.
In 2012 verkocht het bedrijf 38 platforms voor ondiep water aan het net opgerichte Shelf Drilling om zich daarna volledig op diep water te richten.

## Voorgangers

| 1950 SNG | 1950 SNG | 1950 SNG | 1950 SNG | 1950 SNG | 1950 SNG | | | | | 1949 Delong | 1949 Delong | 1949 Delong | 1949 Delong | 1949 Delong | 1949 Delong |
| | | | | | | 1953 Offshore Barge Drilling | 1953 Offshore Barge Drilling | 1953 Offshore Barge Drilling | 1953 Offshore Barge Drilling | 1953 Offshore Barge Drilling | 1953 Offshore Barge Drilling | | | | | 1945 Dixilyn | 1945 Dixilyn | 1945 Dixilyn | 1945 Dixilyn | 1945 Dixilyn | 1945 Dixilyn | 1955 Languedocienne-Forenco | 1955 Languedocienne-Forenco | 1955 Languedocienne-Forenco | 1955 Languedocienne-Forenco | 1955 Languedocienne-Forenco | 1955 Languedocienne-Forenco | 1942 Forex | 1942 Forex | 1942 Forex | 1942 Forex | 1942 Forex | 1942 Forex | | | 1947 Sedco | 1947 Sedco | 1947 Sedco | 1947 Sedco | 1947 Sedco | 1947 Sedco | 1956 Siforep | 1956 Siforep | 1956 Siforep | 1956 Siforep | 1956 Siforep | 1956 Siforep | | 1957 Comafor | 1957 Comafor | 1957 Comafor | 1957 Comafor | 1957 Comafor | 1957 Comafor | | | 1955 Reading & Bates | 1955 Reading & Bates | 1955 Reading & Bates | 1955 Reading & Bates | 1955 Reading & Bates | 1955 Reading & Bates | | | | | 1948 CUSS | 1948 CUSS | 1948 CUSS | 1948 CUSS | 1948 CUSS | 1948 CUSS | | | 1946 Santa Fe | 1946 Santa Fe | 1946 Santa Fe | 1946 Santa Fe | 1946 Santa Fe | 1946 Santa Fe |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1958 Transworld | 1958 Transworld | 1958 Transworld | 1958 Transworld | 1958 Transworld | 1958 Transworld | C. Deilmann, Deutsche Erdoel, Preussag, Deutsche Schachtbau- und Tiefbohr | C. Deilmann, Deutsche Erdoel, Preussag, Deutsche Schachtbau- und Tiefbohr | C. Deilmann, Deutsche Erdoel, Preussag, Deutsche Schachtbau- und Tiefbohr | C. Deilmann, Deutsche Erdoel, Preussag, Deutsche Schachtbau- und Tiefbohr | C. Deilmann, Deutsche Erdoel, Preussag, Deutsche Schachtbau- und Tiefbohr | C. Deilmann, Deutsche Erdoel, Preussag, Deutsche Schachtbau- und Tiefbohr | | 1955 IDC | 1955 IDC | 1955 IDC | 1955 IDC | 1955 IDC | 1955 IDC | | | 1953 The Offshore Company | 1953 The Offshore Company | 1953 The Offshore Company | 1953 The Offshore Company | 1953 The Offshore Company | 1953 The Offshore Company | | | | | | | | | | | | | | | | | | | | | | | | | | | 1962 Neptune | 1962 Neptune | 1962 Neptune | 1962 Neptune | 1962 Neptune | 1962 Neptune | | | | | | | | | | | | | | | | | | | 1961 Cosifor | 1961 Cosifor | 1961 Cosifor | 1961 Cosifor | 1961 Cosifor | 1961 Cosifor | | | | | | | | | | | | | | | | 1958 Global Marine (Union Oil) | 1958 Global Marine (Union Oil) | 1958 Global Marine (Union Oil) | 1958 Global Marine (Union Oil) | 1958 Global Marine (Union Oil) | 1958 Global Marine (Union Oil) | | | | | | 1956 Blue Water | 1956 Blue Water | 1956 Blue Water | 1956 Blue Water | 1956 Blue Water | 1956 Blue Water |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1965 Aker Drilling Company | 1965 Aker Drilling Company | 1965 Aker Drilling Company | 1965 Aker Drilling Company | 1965 Aker Drilling Company | 1965 Aker Drilling Company | 1964 Transocean | 1964 Transocean | 1964 Transocean | 1964 Transocean | 1964 Transocean | 1964 Transocean | | | | | | | | | | | | | | 1963 The Offshore Company | 1963 The Offshore Company | 1963 The Offshore Company | 1963 The Offshore Company | 1963 The Offshore Company | 1963 The Offshore Company | | | | | | | | | | | | | 1972 Dixilyn (Panhandle Eastern) | 1972 Dixilyn (Panhandle Eastern) | 1972 Dixilyn (Panhandle Eastern) | 1972 Dixilyn (Panhandle Eastern) | 1972 Dixilyn (Panhandle Eastern) | 1972 Dixilyn (Panhandle Eastern) | Field | Field | Field | Field | Field | Field | | | 1971 Forex Neptune (Schlumberger) | 1971 Forex Neptune (Schlumberger) | 1971 Forex Neptune (Schlumberger) | 1971 Forex Neptune (Schlumberger) | 1971 Forex Neptune (Schlumberger) | 1971 Forex Neptune (Schlumberger) | | | | | | | | | | | | | | | | | | | | | | | Tiger Oil | Tiger Oil | Tiger Oil | Tiger Oil | Tiger Oil | Tiger Oil | | | | | | | | 1977 Falcon | 1977 Falcon | 1977 Falcon | 1977 Falcon | 1977 Falcon | 1977 Falcon | | | | 1965 Santa Fe | 1965 Santa Fe | 1965 Santa Fe | 1965 Santa Fe | 1965 Santa Fe | 1965 Santa Fe | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1991 Transocean Drilling | 1991 Transocean Drilling | 1991 Transocean Drilling | 1991 Transocean Drilling | | | | | | | | | | | | | | | | | | | | 1982 Sonat Offshore Drilling | 1982 Sonat Offshore Drilling | 1982 Sonat Offshore Drilling | 1982 Sonat Offshore Drilling | 1982 Sonat Offshore Drilling | 1982 Sonat Offshore Drilling | | | | | | | | | | | | | 1977 Dixilyn-Field (Panhandle Eastern) | 1977 Dixilyn-Field (Panhandle Eastern) | 1977 Dixilyn-Field (Panhandle Eastern) | 1977 Dixilyn-Field (Panhandle Eastern) | 1977 Dixilyn-Field (Panhandle Eastern) | 1977 Dixilyn-Field (Panhandle Eastern) | | | | | | | | | | | | | | | 1984 Sedco Forex (Schlumberger) | 1984 Sedco Forex (Schlumberger) | 1984 Sedco Forex (Schlumberger) | 1984 Sedco Forex (Schlumberger) | 1984 Sedco Forex (Schlumberger) | 1984 Sedco Forex (Schlumberger) | | | | | 1980 Techfor (Perenco) | 1980 Techfor (Perenco) | 1980 Techfor (Perenco) | 1980 Techfor (Perenco) | 1980 Techfor (Perenco) | 1980 Techfor (Perenco) | | | | | | | 1978 Cliffs Oil (Cleveland-Cliffs) | 1978 Cliffs Oil (Cleveland-Cliffs) | 1978 Cliffs Oil (Cleveland-Cliffs) | 1978 Cliffs Oil (Cleveland-Cliffs) | 1978 Cliffs Oil (Cleveland-Cliffs) | 1978 Cliffs Oil (Cleveland-Cliffs) | | | | | | | | | | | | | | | | 1972 Andover | 1972 Andover | 1972 Andover | 1972 Andover | 1972 Andover | 1972 Andover | | 1971 Keydril (Gulf Oil) | 1971 Keydril (Gulf Oil) | 1971 Keydril (Gulf Oil) | 1971 Keydril (Gulf Oil) | 1971 Keydril (Gulf Oil) | 1971 Keydril (Gulf Oil) |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1987 Sonat Offshore Drilling | 1987 Sonat Offshore Drilling | 1987 Sonat Offshore Drilling | 1987 Sonat Offshore Drilling | 1987 Sonat Offshore Drilling | 1987 Sonat Offshore Drilling | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1982 Techfor-Cosifor | 1982 Techfor-Cosifor | 1982 Techfor-Cosifor | 1982 Techfor-Cosifor | 1982 Techfor-Cosifor | 1982 Techfor-Cosifor | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Transocean ASA | Transocean ASA | Transocean ASA | Transocean ASA | Transocean ASA | Transocean ASA | | | | | | | | | | | | | | | | | | | | 1996 Transocean Offshore | 1996 Transocean Offshore | 1996 Transocean Offshore | 1996 Transocean Offshore | 1996 Transocean Offshore | 1996 Transocean Offshore | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1991 Sedco Forex (Schlumberger) | 1991 Sedco Forex (Schlumberger) | 1991 Sedco Forex (Schlumberger) | 1991 Sedco Forex (Schlumberger) | 1991 Sedco Forex (Schlumberger) | 1991 Sedco Forex (Schlumberger) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1982 / 1985 Santa Fe | 1982 / 1985 Santa Fe | 1982 / 1985 Santa Fe | 1982 / 1985 Santa Fe | 1982 / 1985 Santa Fe | 1982 / 1985 Santa Fe | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1999 Transocean Sedco Forex | 1999 Transocean Sedco Forex | 1999 Transocean Sedco Forex | 1999 Transocean Sedco Forex | 1999 Transocean Sedco Forex | 1999 Transocean Sedco Forex | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1997 Reading & Bates Falcon | 1997 Reading & Bates Falcon | 1997 Reading & Bates Falcon | 1997 Reading & Bates Falcon | 1997 Reading & Bates Falcon | 1997 Reading & Bates Falcon | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1996 Ocean Rig | 1996 Ocean Rig | 1996 Ocean Rig | 1996 Ocean Rig | 1996 Ocean Rig | 1996 Ocean Rig | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1998 Reading & Bates Falcon | 1998 Reading & Bates Falcon | 1998 Reading & Bates Falcon | 1998 Reading & Bates Falcon | 1998 Reading & Bates Falcon | 1998 Reading & Bates Falcon | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2001 Transocean Sedco Forex | 2001 Transocean Sedco Forex | 2001 Transocean Sedco Forex | 2001 Transocean Sedco Forex | 2001 Transocean Sedco Forex | 2001 Transocean Sedco Forex | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2001 GlobalSantaFe | 2001 GlobalSantaFe | 2001 GlobalSantaFe | 2001 GlobalSantaFe | 2001 GlobalSantaFe | 2001 GlobalSantaFe |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2005 Songa | 2005 Songa | 2005 Songa | 2005 Songa | 2005 Songa | 2005 Songa | | | 2005 Aker Drilling | 2005 Aker Drilling | 2005 Aker Drilling | 2005 Aker Drilling | 2005 Aker Drilling | 2005 Aker Drilling | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2007 Transocean | 2007 Transocean | 2007 Transocean | 2007 Transocean | 2007 Transocean | 2007 Transocean | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2011 Transocean | 2011 Transocean | 2011 Transocean | 2011 Transocean | 2011 Transocean | 2011 Transocean |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2018 Transocean | 2018 Transocean | 2018 Transocean | 2018 Transocean | 2018 Transocean | 2018 Transocean |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 2019 Transocean | 2019 Transocean | 2019 Transocean | 2019 Transocean | 2019 Transocean | 2019 Transocean |

## Literatuur

* Leffler, W.L.; Pattarozzi, R.; Sterling, G. (2011): Deepwater Petroleum Exploration & Production. A Nontechnical Guide, PennWell Books