Pros
Large company with very explicit fixed steps for career development. You will work your tail off and jump through many hoops to get there. Excellent benefits package and attractive compensation when services are in high demand. Potential for lots of responsibility early on - maybe too early - if business is good.
Cons
No fixed schedule in Drilling and Measurements. You're on call 24/7 except for approved vacation days, and maybe then too. Comedically blatant that employees are treated as numbered resources with no regard for work-life balance, amplified by the cyclical nature of the business. Poor communication and management of both people and resources. Middle management is good as an insulator from upper management, but even better as a blockade. Time constraints do not align with frequently-preached safety objectives. Standards and manuals are worded just loosely enough that they can somehow be interpreted to the advantage of the location, at the disadvantage of the employee. If you're not strongly motivated by money, you're gonna have a bad time.