EXHIBIT 31

                        CERTIFICATION OF PERIODIC REPORT


I, E. J. Henderson, certify that:

1.   I have reviewed this quarterly report on Form 10-QSB of CLX Energy, Inc.;

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;

3.   Based on my knowledge, the financial statements, and other financial
     information included in this report, fairly present in all material
     respects the financial condition, results of operations and cash flows of
     the small business issuer as of, and for, the periods presented in this
     report;

4.   I am responsible for establishing and maintaining disclosure controls and
     procedures (as defined in Exchange Act rules 13a-15e and 15d-15e) for the
     small business issuer and have:

     a.   Designed such disclosure controls and procedures or caused such
          disclosure controls and procedures to be designed under by supervision
          to ensure that material information relating to the small business
          issuer is made known to me by others within that entity, particularly
          during the period in which this report is being prepared;
     b.   [Paragraph omitted in accordance with SEC transition instructions
          contained in SEC Release 34-47986.]
     c.   Evaluated the effectiveness of the small business issuer's disclosure
          controls and procedures and presented in this report my conclusions
          about the effectiveness of the disclosure controls and procedures, as
          of the end of the period covered by this report based on such
          evaluation; and
     d.   Disclosed in this report any change in the small business issuer's
          internal control over financial reporting that occurred during the
          small business issuer's most recent fiscal quarter (the small business
          issuer's fourth quarter in the case of an annual report) that has
          materially affected, or is reasonably likely to materially affect, the
          small business issuer's internal control over financial reporting; and

5.   I have disclosed, based on my most recent evaluation of internal control
     over financial reporting, to the small business issuer's auditors and the
     audit committee of the small business issuer's board of directors (or
     persons performing the equivalent functions):

     a.   All significant deficiencies and material weaknesses in the design or
          operation of internal control over financial reporting which are
          reasonably likely to adversely affect the small business issuer's
          ability to record, process, summarize and report financial
          information; and
     b.   Any fraud, whether or not material, that involves management or other
          employees who have a significant role in the registrant's internal
          control over financial reporting.

Date:  February 12, 2004

                              /s/ E. J. Henderson
                              --------------------------------
                              E. J. Henderson,
                              Chief Executive Officer, President,
                              and Chief Financial Officer


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