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Weatherford Internat’l

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Weatherford, an oil field-services company, said ongoing tax accounting problems will force it to restate earnings again. Weatherford, which moved to Geneva in 2009 for a more favorable tax rate, posted preliminary earnings as a final tax bill is determined. It estimated 2011 taxes of $490 million to $520 million, and expects up to $250 million in net adjustments to results from at least 2008 as it corrects errors.

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