**Exhibit 31.1**

**CERTIFICATION**

I, Stephen A. Snider,certify that:

1.             I have reviewed this quarterly reporton Form 10-Q of Universal Compression Partners, L.P. (the “registrant”);

2.             Based on my knowledge, this reportdoes not contain any untrue statement of a material fact or omit to state amaterial fact necessary to make the statements made, in light of thecircumstances under which such statements were made, not misleading withrespect to the period covered by this report;

3.             Based on my knowledge, the financialstatements, and other financial information included in this report, fairlypresent in all material respects the financial condition, results of operationsand cash flows of the registrant as of, and for, the periods presented in thisreport*;

4.             The registrant’s other certifyingofficer and I are responsible for establishing and maintaining disclosurecontrols and procedures (as defined in Exchange Act Rules 13a-15(e)) forthe registrant and have:

a)          designed such disclosure controls and procedures,or caused such disclosure controls and procedures to be designed under oursupervision, to ensure that material information relating to the registrant,including its consolidated subsidiaries, is made known to us by others withinthose entities, particularly during the period in which this report is beingprepared;

b)         [RESERVED]

c)          evaluated the effectiveness of the registrant’sdisclosure controls and procedures and presented in this report our conclusionsabout the effectiveness of the disclosure controls and procedures as of the endof the period covered by this report based on such evaluation; and

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

5.             The registrant’s other certifyingofficer and I have disclosed, based on our most recent evaluation of internalcontrol over financial reporting, to the registrant’s auditors and the auditcommittee of registrant’s board of directors (or persons performing theequivalent functions):

a)          all significant deficiencies and materialweaknesses in the design or operation of internal control over financialreporting which are reasonably likely to adversely affect the registrant’sability to record, process, summarize and report financial information; and

b)         any fraud, whether or not material, thatinvolves management or other employees who have a significant role in theregistrant’s internal control over financial reporting.
| Date:    November  21, 2006 |   | /s/ STEPHEN A. SNIDER                                       |   |
|-------------------------------------------------|--------|-------------------------------------------------------------|--------|
|                                            | Name:  | Stephen A. Snider                                           |
|                                            | Title: | Chief Executive Officer, UCO GP, LLC                        |
|                                            |   | As General Partner of UCO General Partner, LP               |
|                                            |   | As General Partner of Universal Compression  Partners, L.P. |

 

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*                 Thisreport presents the financial condition of the registrant and the financialcondition, results of operations and cash flows of the registrant’spredecessor, the natural gas contract compression business that is provided inthe United States of America by Universal Compression Holdings, Inc. and itssubsidiaries.

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