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We hereby consent to the references to DeGolyer and MacNaughton in the Registration Statement on Form S-8 (the Registration Statement) of Oasis Petroleum Inc. (the Company) to be filed with the United States Securities and Exchange Commission on or about January 14, 2022. We also consent to the use and incorporation by reference in the Registration Statement of information contained in our report entitled “Report as of December 31, 2020 on Reserves and Revenue of Certain Properties with interests attributable to Oasis Petroleum Inc.,” included as an exhibit to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 and included as an exhibit to the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. We further consent to specific references in the Registration Statement to DeGolyer and MacNaughton as an independent petroleum engineering firm.