blow out preventor

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Transocean — Ltd. Type Publicly traded limited company (NYSE: RIG, SIX: RIGN … Wikipedia
Wellhead — A wellhead is piece of equipment that exists atop (the exposed area above ground) of a well. Wellheads are manufactured in a vast variety of manners for numerous purposes which dictate design. Factors that affect wellhead configuration are… … Wikipedia
Blowout preventer — A blowout preventer (BOP) is a large valve that encases an oil well at surface. During drilling or well interventions, the valve may be closed if overpressure from an oil reservoir causes formation fluids such as oil and natural gas to back up… … Wikipedia

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