Tests suggest Macondo cement was unstable, commission told

11/08/2010
Nick SnowWashington EditorLaboratory 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 President Barack Obama's independent commission investigating the Apr. 20 accident and subsequent crude oil spill said on Oct. 28.Halliburton Co., which provided the Macondo well's cement, said several hours later in an initial response that it was reviewing the study, which it believes to have raised a number of questions. The company said the significant differences between its own cement tests and tests performed for the commission may be due to differences in the cement ...
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