Exxon Mobil Corp's (XOM.N) XTO unit is selling its interest in four blocks in the North Sea, part of plans by the world's largest public company to shed peripheral properties, it said on Wednesday. "XTO is seeking offers for its entire interest in the blocks and is willing to consider exchange for other assets, cash consideration, or a combination of these," a document related to the sale said. XTO is offering a stake in its Platypus gas discovery as well as interest in the Witch Ground Graben block.
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