A blowout is the uncontrolled release of crude oil and/or natural gas from an oil well or gas well after pressure control systems have failed. Modern wells have blowout preventers intended to prevent
The Lucas Gusher at Spindletop, Texas (1901)
Macondo-1 well blowout on the Deepwater Horizon rig, 21 April 2010
Government Accountability Office diagram showing subsea well containment operations
A blowout preventer is a specialized valve or similar mechanical device, used to seal, control and monitor oil and gas wells to prevent blowouts, the uncontrolled release of crude oil or natural gas f
Blowout preventer
Cameron International Corporation's EVO Ram BOP Patent Drawing (with legend)
Patent Drawing of Hydril Annular BOP (with legend)
Patent drawing of a subsea BOP stack