Exhibit 23.9
CAWLEY, GILLESPIE & ASSOCIATES, INC.
PETROLEUM CONSULTANTS
| 13640 BRIARWICK DRIVE, SUITE 100 | 306 WEST SEVENTH STREET, SUITE 302 | 1000 LOUISIANA STREET, SUITE 1900 | ||
| AUSTIN, TEXAS 78729 | FORT WORTH, TEXAS 76102-4987 | HOUSTON, TEXAS 77002-5008 | ||
| 512-249-7000 | 817-336-2461 | 713-651-9944 | ||
| www.cgaus.com |
As independent petroleum engineers, we hereby consent to the inclusion in Magnolia Oil & Gas Corporation’s Registration Statement on FormS-8 (the “Registration Statement”), of our reserves reports of Magnolia Oil & Gas Corporation’s proved oil and natural gas reserves estimates and associated estimates of future net revenues and their present value as of December 31, 2017, included in or made a part of the Registration Statement.
| CAWLEY, GILLESPIE & ASSOCIATES, INC. |
| Texas Registered Engineering Firm |
/s/ W. Todd Brooker |
| W. Todd Brooker, P.E. |
| President |
Houston, Texas
October 5, 2018
