Exhibit 31.1
CERTIFICATION BY CHIEF EXECUTIVE OFFICER PURSUANT TO
RULE 13a-14(a) AND 15d-14(a) UNDER THE EXCHANGE ACT
 
I, Keith L. Schilling, certify that:
 
1. I have reviewed this Amendment No. 1 to the Quarterly Report on Form 10-Q of Basic Energy Services, Inc. for the period ended March 31, 2020; 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: July 8, 2020 
 
/s/ Keith L. Schilling
Keith L. Schilling
Chief Executive Officer