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Exhibit 23.3

CAWLEY, GILLESPIE & ASSOCIATES, INC.
PETROLEUM CONSULTANTS

13640 BRIARWICK DRIVE,
SUITE 100
AUSTIN, TEXAS 78729-1707
512-249-7000 306 WEST SEVENTH STREET,
SUITE 302 FORT WORTH,
TEXAS 76102-4987
817- 336-2461
www.cgaus.com 1000 LOUISIANA STREET,
SUITE 625
HOUSTON, TEXAS 77002-5008
713-651-9944

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS

        We hereby consent to the references to our firm, including under the heading "Experts", and to the use of our audit of Athlon Holdings LP's reserves and reserves present value in Amendment No. 1 to the Registration Statement (Form S-4 No. 333-195506) and related Prospectus of Athlon Holdings LP for the offer to exchange up to $500 million of its 7³/8% Senior Notes due 2021.

Sincerely,

/s/ Cawley, Gillespie & Assoc., Inc.
Cawley, Gillespie & Associates, Inc.
Texas Registered Engineering Firm F-693

June 25, 2014
Fort Worth, Texas

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Exhibit 23.3

CAWLEY, GILLESPIE & ASSOCIATES, INC. PETROLEUM CONSULTANTS
CONSENT OF INDEPENDENT PETROLEUM ENGINEERS