1. Ekofisk oil rig, Norway: This is one of the oldest oil rigs in the Atlantic Ocean, located in the North Sea off the coast of Norway. It has been in operation since 1971 and has produced over 2 billion barrels of oil.
2. Statfjord oil rig, Norway: This is another major oil rig in the North Sea, located off the coast of Norway. It has been in operation since 1979 and has produced over 3 billion barrels of oil.
3. Brent oil rig, United Kingdom: This oil rig is located in the North Sea off the coast of the United Kingdom. It has been in operation since 1976 and has produced over 2 billion barrels of oil.
4. Ninian oil rig, United Kingdom: This oil rig is located in the North Sea off the coast of the United Kingdom. It has been in operation since 1978 and has produced over 1 billion barrels of oil.
5. Forties oil rig, United Kingdom: This oil rig is located in the North Sea off the coast of the United Kingdom. It has been in operation since 1975 and has produced over 2 billion barrels of oil.
6. Troll A oil rig, Norway: This is the largest oil rig in the Atlantic Ocean, located in the North Sea off the coast of Norway. It has been in operation since 1995 and has produced over 1 billion barrels of oil.
7. Johan Sverdrup oil rig, Norway: This is a new oil rig that is currently under construction in the North Sea off the coast of Norway. It is expected to be in operation by 2022 and is expected to produce over 2 billion barrels of oil.
8. Bacalhau oil rig, Brazil: This oil rig is located off the coast of Brazil in the South Atlantic Ocean. It has been in operation since 2018 and has produced over 1 billion barrels of oil.
9. Marlim oil rig, Brazil: This oil rig is located off the coast of Brazil in the South Atlantic Ocean. It has been in operation since 1991 and has produced over 2 billion barrels of oil.
10. Roncador oil rig, Brazil: This oil rig is located off the coast of Brazil in the South Atlantic Ocean. It has been in operation since 1998 and has produced over 1 billion barrels of oil.