After the Macondo-1 blowout on the Deepwater Horizon , the offshore industry collaborated with government regulators to develop a framework to respond to future subsea incidents . As a result , all energy companies operating in the deep-water U.S. Gulf of Mexico must submit an OPA 90 required Oil Spill Response Plan with the addition of a Regional Containment Demonstration Plan prior to any drilling activity . In the event of a subsea blowout , these plans are immediately activated , drawing on some of the equipment and processes effectively used to contain the Deepwater Horizon well as well as others that have been developed in its aftermath
Macondo-1 blowout on the Deepwater Horizon
Deepwater Horizon oil spill
Blowout (well drilling)