Oil giants are reportedly showing interest in the US Gulf deepwater field stake, with London-listed BP and Spain's Repsol also expected to consider bids. The owners of the Shenandoah offshore field have offered a 51% stake to potential buyers, with initial bids expected in the coming weeks. Other potential buyers may include large Middle Eastern and Asian energy producers. The potential value of U.S. oil and gas assets has benefited from the rising price of oil and their location near the conflict zone.