Two interviews, one on the phone and another in person, occurred with CGG. There were a number of problem solving questions in both. The in person was approx. 2 hours. 1 hour was spent with an HR rep (very kind) and 1 hour with 3 professionals for the department. The in person interview had questions based on underwater imaging, so maybe familiarize yourself with general terms. They take the time to explain questions and they are fairly straightforward. However, the pressure of the interview may make you second guess the simplicity so maybe practice questions on glassdoor so you are able to shift your pace from verbal to problem solving. I had three people who took turns giving me a question each. Everyone was extremely friendly. We discussed my thesis work and my resume. They commented on a variety of topics, like the extra time I took for my undergrad in engineering, so maybe try to prepare yourself for unusual questions. Really though, they seemed professional and seemed like they'd be enjoyable to with/for. Take the time to learn the basics. Seismic analyst is an introductory position, but you should maybe go over the basics like how ocean surveying works. North America focuses generally on land operations with a small degree of offshore. I was asked a question about a convolution matrix. They give you a breakdown on how to solve one and then give you a couple of questions to build upon. Again, they are not difficult questions. The interviewers were patient, so ask questions if you have them. In regards to research, assume they have no understanding of the basics even if they work in a connecting field. Being able to discuss your work in the clearest and simplest way is probably the best method (bring videos or pictures if it can help them). I made the mistake of assuming they knew about drilling rig basics since they have to consider the means of drilling to the underground resource and was surprised when they did not. Best to assume you are speaking to a complete layman regardless of how technically demanding this field is. I honestly made this mistake and went off on a tangent trying to explain things that I hadn't expected them not to know. Be prepared for this. Overall, it was a really good experience. I was informed of not being chosen 2 weeks after my in-person interview which was great vs. not hearing a response. If you have an interview with them, do you best to prepare for the problem solving questions and learn the basics describe. Maybe draw out how the reflections off the bottom of the ocean works to understand the fundamentals better.