While the industry looks to see what decision Opec will make in Vienna on Wednesday, Douglas-Westwood associate director Jason Waldie has warned that regardless of their decision oversupply could remain for some time to come.

While exploration and production spending has dropped 22% since 2014 following volatility in the oil price, Waldie told delegates at the OSEA conference in Singapore the oversupply could remain through to 2020. 

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