Reporting from Atlanta and Washington — Weeks before the Deepwater Horizon explosion, oil company BP and subcontractor Halliburton were aware of test results showing that the cement mixture designed ...

Laboratory tests of cement and additives closely resembling what BP PLC used in its Macondo well in the Gulf of Mexico strongly suggest that the mixture was unstable, the chief counsel for US ...

WASHINGTON — Halliburton officials knew weeks before the fatal explosion of the BP well in the Gulf of Mexico that the cement mixture they planned to use to seal the bottom of the well was unstable ...

Washington (CNN)-- Oil giant BP and contractor Halliburton knew of potential flaws in the cement slurry used to reinforce the oil well below the Deepwater Horizon rig before it exploded in April, ...

In completion of oil and gas wells, cement isolates the wellbore, prevents casing failure, and keeps wellbore fluids from contaminating freshwater aquifers. The basic factors engineers and operators ...

BP had been told weeks before the explosion on the Deepwater Horizon caused the world's biggest accidental offshore oil spill that the cement slurry that would be used for the well was unstable, the ...

Halliburton Co. acknowledged late Thursday that it skipped doing a critical test on the final formulation of cement used to seal the BP oil well that blew out in the Gulf of Mexico. The company, which ...

WASHINGTON Halliburton officials knew weeks before the fatal explosion of the BP well in the Gulf of Mexico that the cement mixture they planned to use to seal the bottom of the well was unstable but ...

Halliburton Co on Wednesday disputed BP Plc's allegations in a court filing that it had destroyed evidence related to its cement work on the Gulf of Mexico well that blew out last year. Citing recent ...

The rules governing the disposal of concrete slurry created during polishing, cutting and grinding can be murky without a set of guidelines to follow. Is concrete slurry a hazardous waste and does it ...