Simply I should say, you are well informed.
As such [petroleum and oil and gas are specialized fields], which require thorough knowledge of engineering. Rather technical knowledge is a math, as it deals with the technicality aspects.
So they would require people from technical backgrounds.
But looks like you are keenly interested in this industryt.
So why dont you pursue a general MBA, with specilaizations related to either Finance or HR, which can help you secure a job in the said industry.
I have only mentioned [HR and Finance], since these are the 2 departments which