Abraxas Petroleum (AXAS) 10-K 2018 FY Annual report

DEGOLYER AND MACNAUGHTON

5001 SPRING VALLEY ROAD

SUITE 800 EAST

DALLAS, TEXAS 75244

March 15, 2019

Abraxas Petroleum Corporation

18803 Meisner Drive

San Antonio, TX 78258

Ladies and Gentlemen:

We consent to the use of the name DeGolyer and MacNaughton, to references to DeGolyer and MacNaughton, and to the inclusion of information taken from our “Report as of December 31, 2017 on Reserves and Revenue of Certain Properties owned by Abraxas Petroleum Corporation,” and “Report as of December 31, 2016 on Reserves and Revenue of Certain Properties owned by Abraxas Petroleum Corporation,” (our Reports) under the sections “Item 1. Business - General,” “Item 2. Properties - Reserves Information,” and “Notes to Consolidated Financial Statements - 16. Supplemental Oil and Gas Disclosures (Unaudited)” in the Abraxas Petroleum Corporation Annual Report on Form 10–K for the year ended December 31, 2018. We further consent to the incorporation by reference in the Registration Statements on Form S-4 (No. 333-212340), Form S-3 (No. 333-212342) and Form S-8 (Nos. 333-17375, 333-17377, 033-81416, 333-55691, 333-74592, 333-74614, 333-135032, 333-153635, 333-162358, 333-168022, 333-188117, 333-204744, 333-212341 and 333-219877) of information from our Reports.

Very truly yours,

/s/ DeGolyer and MacNaughton

DeGOLYER and MacNAUGHTON                                     

  Texas Registered Engineering Firm F-716