Had to fill out an application, then a personality test (I hear some people get rejected after this step), and then a qualitative reasoning test, which is really easy, but you have a very short time limit. I barely answered over half the questions. Shell will contact you if they want an interview, which was on my University's campus.
All behavioral questions. Asked a lot about personal experience with diversity and teamwork. They want to make sure you can communicate effectively and can build relationships with different people, especially since you'll be interacting with a lot of people from different companies.