OSLO (Reuters) – Norway’s Equinor said on Wednesday the adjusted fourth-quarter earnings of its Marketing, Midstream & Processing (MMP) unit was expected to be “around the low end of the guided range” of between $400 million and $800 million. “The fourth quarter refining and liquids margins are reduced from 3Q,” Equinor said. The disclosure was part of a quarterly release of information to analysts and investors, which the company typically makes a few weeks ahead of its earnings reports. Equinor is due to report its overall October-December and full-year earnings on Feb. 7. (Reporting by Terj…