Netherlands-based Royal Dutch Shell has got bids from companies, including Essar Group, Afren and Perenco for stakes in four Nigerian oil fields, Bloomberg reports. India’s Essar is placing its bid with Nigeria’s Energy Equity Resources, while France’s Perenco is bidding with Swiss trading firm, Addax & Oryx Group, and Oando. Another bidding group includes Heritage Oil of the U.K. and Nigerian contractor, Shoreline Energy International. Private wequity firms, including Riverstone and Blackstone are also interested in the assets. The move comes as part of a plan by Shell’s CEO, Peter Voser, to sell $5 billion of assets in 2011.

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