Exhibit 31.4
CERTIFICATION OF CHIEF FINANCIAL OFFICER
PURSUANT TO SECTION 302 OF SARBANES-OXLEY ACT
I, William M. Austin, certify that:
1. I have reviewed this Amendment No. 1 on Form 10-Q/A of Key Energy Services;
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.
| | /s/ William M. Austin |
| | William M. Austin |
| | Senior Vice President and Chief Financial Officer |
Date: November 5, 2007 | | |