NEW ORLEANS — A federal judge is ordering tests to be performed as soon as possible on cement Halliburton Co. used to seal the BP well that later blew out catastrophically in the Gulf of Mexico. U.S.

WASHINGTON — Tests performed before the deadly blowout of BP's oil well in the Gulf of Mexico should have raised doubts about the cement used to seal the well, but the company and its cementing ...

Before the massive blowout of BP's Macondo oil well in the Gulf of Mexico, tests showed that the cement Halliburton pumped down into the well could be unstable, according to a presidential commission ...

WASHINGTON — Tests performed before the deadly blowout of BP’s oil well in the Gulf of Mexico should have raised doubts about the cement used to seal the well, but the company and its cementing ...