https://www.reuters.com/article/us-oil-iea/iea-sees-global-oil-supply-tightening-more-quickly-in-2019-idUSKBN1OC0Y4
https://www.rigzone.com/news/four_things_upstream_firms_can_change_in_2019-29-nov-2018-157600-article/
https://www.thisdaylive.com/index.php/2018/10/09/nigerias-annual-petroleum-products-import-bill-now-11bn-says-expert/
