The most significant bankruptcy of the current oil downturn has shone a spotlight on what is perhaps the most oversupplied corner of the energy world: the market for offshore rig services. Samson Resources Corp, an independent oil producer bought just four years ago for $7.2 billion, said in its late Wednesday filing for creditor protection that a 60 percent crude price slide CLc1 LCOc1 had upended its business. In the offshore space, restructurings and asset sales are widely seen as likely and some chief executive officers are now openly talking about acquisitions. Paragon Offshore Plc ( PGN.N ), which has an outdated fleet, said on Thursday it has hired Weil, Gotshal & Manges, a well-known restructuring firm, and the investment bank Lazard. And Vantage Drilling Co, which has a hefty debt load, has also said it retained financial adviser Lazard to explore options. Vantage did not provide additional comment. […]