Exhibit

We hereby consent to the reference to DeGolyer and MacNaughton and to the incorporation of the estimates contained in our “Report as of December 31, 2015 on Reserves and Revenue owned by Oasis Petroleum Inc.” (our Report) in the notes “Notes to Unaudited Pro Forma Condensed Combined Financial Information” which are included in or made a part of the Current Report on Form 8-K of Oasis Petroleum Inc., dated December 1, 2016. We further consent to the incorporation by reference of references to DeGolyer and MacNaughton and to our Report in Oasis Petroleum Inc.’s Registration Statements on Form S-3 (File No. 333-197440) and Forms S-8 (File No. 333-167664, File No. 333-206025, and File No. 333-213118).