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PATTERSON-UTI ENERGY, INC. (PTEN) today reported that for the month of December 2015, the Company had an average of 82 drilling rigs operating in the United States and one rig in Canada. For the three months ended December 31, 2015, the Company had an average of 88 drilling rigs operating in the United States and three 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.

About Patterson-UTI

Patterson-UTI Energy, Inc. subsidiaries provide onshore contract drilling and pressure pumping services to exploration and production companies in North America. Patterson-UTI Drilling Company LLC and its subsidiaries operate land-based drilling rigs in oil and natural gas producing regions of the continental United States and western Canada. Universal Pressure Pumping, Inc. and Universal Well Services, Inc. provide pressure pumping services primarily in Texas and the Appalachian region.

Location information about the Company’s drilling rigs and their individual inventories is available through the Company’s website at