BUZZ-Oil and gas companies: Crude recovers
** Oil rose on Thursday, recovering from part of the previous session's drop
** At 1515 GMT, brent crude futures up 4.3 pct at $56.50; U.S. crude up 5.5 pct at $51.17
** SandRidge Energy Inc shares up 20 pct, Goodrich Petroleum Corp up 13 pct, Rosetta Resources Inc up 11.6 pct, Swift Energy Co up 9.9 pct
** Canadian oil stocks Surge Energy Inc up 8.6 pct, Penn West Petroleum Ltd up 7.4 pct, Athabasca Oil Corp up 6.9 pct
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