Need a PhD Topic for Oil and Gas Industry, Please Help!

I have signed up for a part time PhD course in Oil and Gas Management. I am looking for a research topic related to Refinery and Petrochemical section. I have been a Mechanical engineer and have 10 years of experience in Refinery and Petrochemical plants in Maintenance and Reliability departments. Still I find it difficult to settle a PhD level topic for me.

I want to pursue a research field which doesn’t include any lab work. I can perform Interviews and survey for completing the research. The topic should be related to Refineries in India and should not include process or operation as my background is Mechanical. Any input for the same would be highly appreciated.

Thank you

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