1st round, on campus interview. resume and some general mechanical questions. 2nd round, on site interview in Houston. At the beginning, everyone need to give a presentation about your project in 7mins. Then the engineers in schlumberger will ask you questions about your project. Then one on one interview with four engineers. Almost no resume questions, 1 or 2 questions about your presentation, then all the technical questions. It's all about the projects they are working on. It's really hard. But just answer as many as you can with you mechanical sense. The interviewers are nice, even though you cannot answer their questions. Don't be nervous.

First of all, there will be online assessment which is elementary after which you will be having group discussion which is again elementary and finally a virtual interview. Online assessment consists of aptitude test and mechanical basics. Our group discussion topic was social media is boon or bane