Pros
Schlumberger offers its engineers a good starting salary, a great culture at workplace and international exposure. Structured growth path for engineers for the first three years is next only to hand holding. Mentors and managers are accountable for success of new recruits. Attrition is carefully monitored. All these make Schlumberger a good first job. Those who stay long term are rewarded with generous deferred benefits. Organizations does not haver many layers and visibility is good visibility. The fact that almost all upper management were at some time a field engineer in the company makes it easy to connect to them.
Kontras
Drilling does not happen in champ de elysee. Expect to travel and work in all kinds of places. Work hours tough on the rig, worse in office. Salary growth is slow between 5-15 years. By then one shoud ideally be getting significant stock options.