A federal judge ordered Anadarko Petroleum Corp, which owned part of the blown out well at the center of the 2010 Gulf of Mexico oil spill, to face a lawsuit accusing it of defrauding shareholders, but significantly narrowed the plaintiffs' case. U.S. District Judge Keith Ellison…said that while shareholders had highlighted 28 allegedly misleading statements attributable to Anadarko, they were entitled to sue over only a single "isolated" statement concerning the Macondo well, the majority of which was owned by BP Plc…Shareholders had accused Anadarko of mismanaging its 25 percent stake in the Macondo well, and understating its ability to manage risk and handle liabilities…Anadarko spokesman…said the company was reviewing the decision. It had sought to dismiss the lawsuit…