EXHIBIT 31.1
CERTIFICATION
I, K. Earl Reynolds, Chief Executive Officer of Chaparral Energy, Inc., certify that:
| 1. | I have reviewed this annual report on Form10-K/A of Chaparral Energy, Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Date: April 29, 2019 | ||
| By: | /s/ K. Earl Reynolds | |
| K. Earl Reynolds | ||
| Chief Executive Officer | ||
