Seadrill Partners owns interests in a handful of offshore drilling rigs, and it's been creamed by the perpetual downward movement in oil prices over the past year and a half. Oil, which had regularly been trading between $80 and $110 per barrel, is now stuck well below $40, and offshore drillers are really feeling the pain, as offshore drilling can often be more expensive than land-based recovery. If there's one bright spot, Seadrill Partners' order backlog of $4.7 billion gives it a nearly three-year revenue runway. But the good news stops there.