I applied through college or university. The process took 2 months. I interviewed at bp (Wayne, NJ) in Oct 2013
Interview
The interview lasted an hour and a half. The first section was behavioral based, then a case study, then I could ask questions. The interviewers were friendly and share insight on the particular program. They were very honest and brought up the effects of the oil spill spill. Overall, the interview made me want to work for BP. I'm still waiting to hear back about second rounds.
Interview questions [1]
Question 1
There weren't any difficult questions other than the case study.