**Exhibit 31**

**CERTIFICATION**

I, Mike Ulrich, as Vice President and Trust Officer ofJPMorgan Chase Bank, N.A., the Trustee, certify that:

1.           Ihave reviewed this quarterly report on Form 10-Q of Santa Fe Energy Trust,for which JPMorgan Chase Bank, N.A. serves as Trustee;

2.           Basedon my knowledge, this report does not contain any untrue statement of amaterial fact or omit to state a material fact necessary to make the statementsmade, in light of the circumstances under which such statements were made, notmisleading with respect to the period covered by this report;

3.           Based on my knowledge, the financial statements, and otherfinancial information included in this report, fairly present in all materialrespects the financial condition, distributable income and changes in trustcorpus of the registrant as of, and for, the periods presented in this report;

4.           I amresponsible for establishing and maintaining disclosure controls and procedures(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) andinternal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and15d-15(f)), or for causing such procedures to be established and maintained,for the registrant and I have:

(a)                designedsuch disclosure controls and procedures, or caused such disclosure controls andprocedures to be designed under my supervision, to ensure that materialinformation relating to the registrant, including its consolidatedsubsidiaries, is made known to me by others within those entities, particularlyduring the period in which this report is being prepared;

(b)                designedsuch internal control over financial reporting, or caused such internal controlover financial reporting to be designed under my supervision, to providereasonable assurance regarding the reliability of financial reporting and thepreparation of financial statements for external purposes in accordance withgenerally accepted accounting principles;

(c)                evaluatedthe effectiveness of the Trustee’s disclosure controls and procedures andpresented in this report my conclusions about the effectiveness of thedisclosure controls and procedures, as of the end of the period covered by thisreport based on such evaluation; and

(d)                disclosedin this report any change in the Trust’s internal control over financialreporting that occurred during the registrant’s most recent fiscal quarter (theregistrant’s fourth fiscal quarter in the case of an annual report) that hasmaterially affected, or is reasonably likely to materially affect, the Trust’sinternal control over financial reporting; and

5.           Ihave disclosed, based on my most recent evaluation of internal control overfinancial reporting, to the registrant’s auditors:

(a)                allsignificant deficiencies and material weaknesses in the design or operation ofthe Trust’s internal control over financial reporting which are reasonablylikely to adversely affect the registrant’s ability to record, process,summarize and report financial information; and

(b)                any fraud, whether or not material, that involves anymanagement or other employees who have a significant role in the Trustee’sinternal control over financial reporting; and

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In giving the foregoing certifications, I have reliedto the extent I consider reasonable on information provided to me by DevonEnergy Production Company, L.P.

Date: August 8,2005
|        |   |                                     |
|--------|--------|-------------------------------------|
|   |   | Mike Ulrich                         |
|   |   | *Vice President and Trust  Officer* |

 

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