Is a site aimed at those who work as divers in the offshore oil and gas industry. Also has a good collection of links to other sites. Be warned you will have to work out a very off colour sense of humour in the forums. Would not rely on this site to much for hard factual news, but more what people who are actually working in the industry are thinking.
Also without knowing your background not sure if this is relevant but do you have access to a university library database or an engineering background? Some of the academic engineering journals might be relevant but they can be a very dry read as well as hard to understand without the proper training.
Other sites you could look at are the major companies. Think Shell, Woodside, Chevron, BP ect.
As usual not endorsing the content of the above sites, DYOR ect. ect.