BP Plc accused a unit of Halliburton Co. of intentionally destroying evidence that could be used to prove the oilfield services firm shares blame for the blowout that caused the 2010 Gulf of Mexico oil spill.

Halliburton Energy Services (HAL) Inc. destroyed test results that showed samples of the cement used to seal London-based BP’s Macondo well, which exploded off the Louisiana coast last year, were unstable, BP said in a filing today in federal court in New Orleans.

The oilfield services provider also suppressed computer models that might prove Halliburton was at fault “because it wanted to eliminate any risk that this evidence would be used against it at trial,” BP said in the filing.

BP asked the court to find that Halliburton destroyed evidence on purpose and to compel the company to turn over for third-party examination the computer used for the modeling.

Read more: Bloomburg December 6, 2011

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