Companies will face greater competition for capital and will need more complex financing instruments with eye-popping estimates like an expected $4 trillion in new North American oil and gas projects through 2020, the financial services firm wrote in its study, "The Challenge of Renaissance."

Among other investment areas, Deloitte lists $250 billion in Australian LNG projects, $150 billion in Brazil, $145 billion in Asian refining capacity and $100 billion in Mozambique.

"Globally,