WASHINGTON — Weeks before the Deepwater Horizon drilling rig exploded in the Gulf of Mexico, tests pinpointed problems with the stability of Halliburton's cement foam used to seal BP's doomed Macondo ...

Weeks before the Deepwater Horizon drilling rig exploded in the Gulf of Mexico, tests pinpointed problems with the stability of Halliburton's cement foam used to seal BP's doomed Macondo well, the ...

Halliburton cement used to seal BP's Gulf oil well was unstable, but used anyway despite multiple failed tests leading up to the Deepwater Horizon disaster, the presidential oil spill commission has ...

To seal the well, “Halliburton generated the nitrogen foam cement by injecting high pressure nitrogen into a base cement slurry as it pumped that slurry into the well,” wrote Fred H. Bartlit Jr., ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. Halliburton, the oil field services giant that provided the cement for BP’s Macondo ...

WASHINGTON, D.C. — Three advance tests the oil services firm Halliburton carried out on a cement mixture used to try to close BP's Macondo oil well in the Gulf of Mexico showed that the cement would ...

Cement slurry used in the Macondo well was unstable and may have contributed to the April 20 blowout aboard the Deepwater Horizon, according to a report issued Thursday by Fred Bartlit Jr., lead ...

See the well diagram in Figure D-1. FIGURE D-1 Well diagram. 1. Pressure differential at the start of the negative test: p o = pressure outside the casing at the bottom (psi), assumed equal to ...