Got offered an assessment center a week after applying, was a full day in Aberdeen. right from the start was the toughest interview i've ever had! we waited in the canteen at the start of the day then were lead into a room and with no introductions or anything were told there's 3 different logic tests on the table, we have one hour and anyone who gets under 70% their day is over. so a pretty stressful start. 4 of the 12 failed the test and after that things were a bit more relaxed with a long talk about how the industry works and where Schlumberger fits into this. next we had to give a 5 minute presentation about ourselves which was all fairly straight forward. after lunch there was a group exercise where we had to build a structure for 3 people to fit under out of 25 sheets of paper and some selotape. my team built a Teepee which was the best one. finally there was a practical test where we had to assemble a valve and the interview. the interview was very standard compitency questions however the women asking the questions seemed very disinterested and not impressed by my answers which knocked my confidence a bit and my interview only lasted 10 minutes compared to 30 for everyone else. i think this was because i was the last person and we had allready ran over time. i thought the day went terribly and wasnt expecting anything to come but 3 weeks later i got an offer!