Halliburton's Cement Slurry Was Unstable In Latest Tests, Oil Spill Commission Told

摘要

The presidential oil spill commission released preliminary findings Oct. 28 concluding that Halliburton Corp.'s cement job was unstable and may have been a contributor to the nation's worst offshore oil spill.rnNine tests were conducted under varying conditions at a Chevron Corp. cementing laboratory in Houston using the nitrogen-foam cement mixture that was applied by Halliburton in BP Pic's deepwater well, which spilled 4.9 million barrels of oil into the Gulf of Mexico for almost five months. The violent well blowout claimed 11 lives.rn"None of the tests produced a stable foam," according to a report that has been submitted by Chevron to the National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling.rnFred H. Bartlit Jr., the commission's chief counsel, informed the seven presidential commission members by letter of the Chevron test results.rn"We have known for some time that the cement used to secure the production casing and isolate the hydrocarbon zone at the bottom of the Macondo well must have failed in some manner," Bartlit said in his letter.