Different roles Petroleum Engineering entails

What are the different roles Petroleum Engineering entails?

- Reservoir Engineer,
- Technical Support Engineer,
- Senior Geoscientist,
- Drill Bits System Field Engineer,
- Petroleum Technologist and Drilling Engineer
- Principal Reservoir Petro Physicist,
- Technical Support Specialist,
- Tender and Quotations Analyst,
- Geosciences Pressure Expert,
- Senior Petro Physicist,
- Senior Exploration Geologist
- Process Engineer.