Exhibit 31

CERTIFICATION

I, Mike Ulrich, certify that:

1. I have reviewed this quarterly report on
Form 10-Q of Whiting USA Trust II, for which The Bank of New York Mellon Trust Company, N.A. acts as Trustee;

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, distributable income and changes in Trust corpus of the registrant 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-15(e)
and 15d-15(e)) or for causing such disclosure controls and procedures to be established and maintained for the registrant and I have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under my supervision, to ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to me by others within those entities, particularly during the period in which this report is being prepared;

(b) Evaluated the effectiveness of the registrant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

(c) Disclosed in this report any change in the registrants internal control over financial reporting that occurred
during the registrants most recent fiscal quarter (the registrants fourth fiscal quarter in the case of an annual report) that has materially affected or is reasonably likely to materially affect the registrant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 registrants auditors:

(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 registrants ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves any persons who have a significant role in the registrants
internal control over financial reporting.

In giving the foregoing certifications in paragraphs 4 and 5, I have relied
to the extent I consider reasonable on information provided to me by Whiting Petroleum Corporation.



|                        |  |  |  |                                                
|----------------------- |  |  |  | -----------------------------------------------
|                        |  | 
|Date: November 13, 2012 |  |  |  | /s/ MIKE ULRICH                                
|                        |  |  |  | Mike Ulrich                                    
|                        |  |  |  | Vice President                                 
|                        |  |  |  | The Bank of New York Mellon Trust Company, N.A.