Patterson-UTI Reports Drilling Activity for April 2009



Patterson-UTI Energy Inc. reported that for the month of April 2009, the Company had an average of 69 drilling rigs operating, including 67 rigs in the U.S. and 2 rigs in Canada.

Average drilling rigs operating reported in the Company's monthly announcements represent the average number of the Company's drilling rigs that were operating under a drilling contract. The Company cautioned that numerous factors in addition to average drilling rigs operating can impact the Company's operating results and that a particular trend in the number of drilling rigs operating may or may not indicate a trend in or be indicative of the Company's financial performance. The Company intends to continue providing monthly updates on drilling rigs operating shortly after the end of each month.
 


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