24 ii welldesign

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Unformatted text preview: ositive pressure test; 34 displacing mud in the well from 8,367 feet to the wellhead; performing a negative pressure test; 35 setting a 300‐foot cement plug in the well approximately 3,300 feet below the sea floor and setting a lock‐down sleeve to lock the final casing into place. 36 BP engineers changed the order of these steps several times in the days before the temporary abandonment. During all well activities, including temporary abandonment, crew members monitor various sensors on the rig that show fluid volumes and well pressures. 37 These sensors provide real time data to the crew, which monitors and analyzes the data on electronic displays to identify potential kicks, among other things. Early kick detection is critical to maintaining well control. On April 20, the crew conducted tests to evaluate the integrity of the production casing cement job. The tests were based on MMS‐approved procedures that a BP drilling engineer had sent to the rig that morning. 38 The crew first conducted a positive pressure test to evaluate whether the well casing could sustain pressure exerted on it from the inside of the well and received favorable results. 39 On the same afternoon, the crew circulated...
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This note was uploaded on 01/18/2014 for the course BEPP 305 taught by Professor Nini during the Fall '11 term at UPenn.

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