BP, scientists study how to safely finish deepwater relief well

Federal scientists and BP PLC studied how to best complete the relief well to kill the deepwater Macondo well in the Gulf of Mexico.Pressure tests indicate cement pumped during the Aug. 5 static kill procedure went into both the reservoir and the annulus, National Incident Commander and retired US Coast Guard Adm. Thad Allen said."How thick the cement barrier is between the annulus and the reservoir, we just don't know," Allen said. "It might be very thin, and we go and put pressure on that and we have a problem."The well was shut in on July 15 when BP installed a capping stack. The blown-out well leaked an estimated 4.9 million bbl of which BP captured 800,000 bbl (OG...

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