The process took 1 day. I interviewed at SLB (Houston, TX) in Jan 2011
Interview
Got a call from Schlumberger and was asked the following question:
1) Briefly explained some of the content (mostly research related) of my resume
2) What is teamwork for you? and give an example
3) Why Schlumberger
I applied through college or university. The process took 1 day. I interviewed at SLB in Aug 2008
Interview
The interview was mainly HR, interviewer was impressed with the fact that my resume had a little bit of everything-sports, dance and dramatics, research awardship etc. Only one interview was held and one Group Discussion was held.
I applied through an employee referral. The process took 3 days. I interviewed at SLB in Feb 2010
Interview
They send you for a coupe of days to one of their operation bases. You sleep in an hotel nearby, and you won´t get much sleep as after dinner, which ends around 23:00 to 24:00 hours, they give you a manual which you must study and be able to take an exam next morning at 7:00.
During the day, they take you to the base, at which they will further explain details and general stuff about the job, and you will do some excersise with your previously assigned team, which were cool.
They do not tell you for which position they´re hiring. This means that even though have the right profile for Slb, you don´t necessarily have the profile for that specific position. They will ask you what you´re interested in and hopefully there is a similar position open.
During this recruitment process they treat you preatty well, and even though you dont get an offer it´s an amazing experience.
In my case, I got an offer 2 weeks after the recruitment process and they send me my contract about 2 months after the initial offer.