English to German Tech/Engineering Human Resources Oil and Gas industry

I have a list of jobs (or job areas) for the oil and gas industry, with no further descriptions or context. I thought well operations might be Bohrungsverfahren, but I now realised I was completely off as further down in my list comes *drilling* for which Bohungsverfahren would be more fitting.

OIL & GAS

Senior Appointments
• Project Management
• Project Planning
• Project Engineering

Subsea
• Well Operations
• Feed / Conceptual Design
• Integrity Management
• Construction & Installation
• Maintenance

Subsurface
• Drilling
• Reservoir Engineering
• Geophysics
• Geology
• Petroleum Engineering
• Petrophysics
• Subsurface Management

Supply Chain
• Logistics
• Procurement
• Materials
• Buying
• Planning & Cost


This is the full list for the oil and gas section. It is for a recruitment agency. Any ideas? Thank you for your help!