brPage 1br CONTRACTOR Design evolution of a subsea BOP THE FIRST RAM THE CHALLENGE Blowout preventer requirements get tougher as drilling goes ever deeper brPage 2br RELIABILITY OF OPERATI ID: 63125
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What has changed, however, and is in a constant state of flux are the oper-which BOPs are used in todays drilling activities. Today, a subsea BOP greater than 10,000 f t, at pressures of up to 400° F and external immersed temper-The deepwater challenges being expe-companies alike are critical technical Todays deepwater BOPs can be required to remain subsea for extended periods