I applied through a recruiter. The process took 1 day. I interviewed at Devon Energy (Calgary, AB) in Aug 2013
Interview
I went through an agency and they set up the interview for me. Devon was one of their clients and they were looking for a coordinator, which suited my skill set. I did not try applying online and from what I heard, that does not get you very far. It's better to find some backdoor way into Oil and gas companies like Devon.
Pretty standard interview, lasted about and hour for the in person interview and had a 10 minute phone screen. They will have you go to their corporate office in OKC for the in person interview. The interview questions are all standard HR questions - benefits, employee relations, HRIS, etc.