Halliburton may not have had – and BP did not have – the results of that test before the evening of April 19, meaning that the cement job may have been pumped without any lab results indicating that ...

HALLIBURTON has rejected findings by a Chevron laboratory in Houston that, according to the White House Oil Spill Commission, imply the nitrogen foam cement in BP’s Macondo well was unstable and may ...

Weeks before the April 20 Deepwater Horizon explosion, oil company BP and subcontractor Halliburton were aware of test results showing that the cement mixture designed to temporarily seal the well was ...

WASHINGTON — Houston-based Halliburton knew that the cement it was using to seal BP's Deepwater Horizon oil well was likely to be unstable, but it didn't tell BP or act on the information internally ...