This preview shows page 1. Sign up to view the full content.
Unformatted text preview: pants.’” BP’s failure to provide complete and final negative test procedures to the rig in a timely fashion was a possible contributing cause of the kick detection failure. A 15 bbls influx in 6,000 feet of water contains approximately four times the mass of gas of the same influx in 1,500 feet of water. Early recognition of the warning signals and rapid shut‐in are therefore crucial to well control in deep water. Taking action quickly minimizes the amount of formation fluid that enters the wellbore. The rig crew first observed the drill pipe pressure anomalies 111 at about 5:52 p.m. and attempted to bleed‐off the drill pipe pressure. After three unsuccessful attempts, the crew eventually justified the pressure as a “bladder effect.” The rig crew did not realize the well was flowing until mud was discharging onto the rig floor. The Deepwater Horizon crew’s hesitance to shut‐
in the BOP immediately was a possible contributing cause of the kick detection failure. The MMS‐approved APM called for two negati...
View Full Document