Didn't know ExxonMobil is hiring again. (and yes, 100% sure it is Exxon).
You don't need deep industry specific knowledge. You'll learn as you go. Just need to briefly know the overall value chain and how the business functions linked together once you join.
You'll probably be doing lots of work pulling data from
SAP performing the analysis based on those.
Working hours wise it is definitely much better than big 4. But expect to work OT around the April/May period.