BP Replaces Blowout Preventer

BP replaced the busted blowout preventer on the well that leaked for months into the Gulf of Mexico, another step toward killing the well. No oil leaked while the old equipment was removed or the new one was installed. The new blowout preventer is needed to keep the oil from leaking during “bottom kill,” in which thick drilling mud and cement are pushed in from the bottom. That operation will probably begin next week.