Raises are given to those who prove themselves in the field and show initiative. Often people think they are entitled to receive a raise only because they have worked for a certain amount of time.
I am one who has received a raise and 4 of my friends/co-workers did as well. I can honestly say I really enjoy working for this company. Communication is incredible and the little perks like being driven to and from site at the start and end of each rotation goes a long way.
I agree with the person above when I was hired I was told I would be getting a much higher pay then I was and when I confronted "management" they said they would look into it however they never got back to me. When I brought it to there attention that I was to have gotten a raise in October as per my contract they told me they would not be doing so. My best advice is to stear clear of this company at all costs.
Never, even if promised in contract