SLB Vacation Trainee interview questions

First, I listed my application to the company in The University Intership Fair. After two months, I was contacted by SLB Recruiting team. The first test was about simple math operations and basic engineering concepts like: Hydrostatic pressure, strength, areas-perimeters-volumes calculation, pulley, gears. There were a lot of operations with decimal numbers! Next day I had an interview in english. They ask you simple questions about your family and your interests. It's really important show a strong interest for the company. After one month I recieved an offer to join SPM team.