Halliburton Admits Skipping Test On Gulf Well Cement - Spokane, North Idaho News & Weather KHQ.com

Halliburton Admits Skipping Test On Gulf Well Cement

MSN - 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 was BP's cementing contractor, said that BP at the last-minute increased the amount of a critical ingredient in the cement mix. While an earlier test showed the cement was stable, the company never performed a stability test on the new blend.

The cement's failure to prevent oil and gas from entering the well has been identified as one of the causes of the April 20 disaster.

Halliburton said that a successful test was performed on a mixture different than the one eventually used. While some tests were conducted on the new formulation requested by BP, those tests did not include a foam stability test, the company said.

Halliburton Co. made the admission in a statement issued Thursday in response to findings by the presidential oil spill commission.

The commission earlier Thursday said in a letter that BP and Halliburton knew weeks before the Deepwater Horizon explosion that the cement mixture they planned to use to seal the new well was unstable but still completed the work.

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