Its subsidiary Mitsui Oil Exploration's MOEX Offshore had a 10% stake in the "Deepwater Horizon" well in the Gulf of Mexico through a subsidiary, and in May, 2011, MOEX agreed to pay US$1.07 billion to settle British Petroleum claims against it over the explosion and oil spill at the well. Some analysts had thought BP would realize a larger settlement from MOEX but there was also relief to have a first step toward resolving the multiple claims.