CONSENT OF NETHERLAND, SEWELL & ASSOCIATES, INC.
We hereby consent to the references in this Form 10-K of Warren Resources, Inc. to be filed on or about March 6, 2013, as well as in the Notes to the Consolidated Financial Statements included in such Form 10-K, to the use of our name and our report dated January 22, 2013, to the interest of Warren Resources, Inc. and its subsidiaries (collectively the "Company"), relating to the estimated quantities of the Company's proved reserves of oil and gas and present values thereof, as of December 31, 2012 and our report dated January 20, 2012, to the interest of Warren Resources, Inc. and its subsidiaries (collectively the "Company"), relating to the estimated quantities of the Company's proved reserves of oil and gas and present values thereof, as of December 31, 2011. We further consent to the inclusion of our summary report dated January 22, 2013 as an Exhibit to the Company's annual report on Form 10-K for the year ended December 31, 2012 and our summary report dated January 20, 2012 as an Exhibit to the Company's annual report on Form 10-K for the year ended December 31, 2011. We also consent to the incorporation by reference of such report in the Company's Registration Statements on Forms S-8 (No. 333-169447 and No. 333-125277).
| NETHERLAND, SEWELL & ASSOCIATES, INC. | ||||
By: | /s/ DANNY. D. SIMMONS, P.E. Danny D. Simmons, P.E. President and Chief Operating Officer | |||
Houston, Texas
March 5, 2013
