Patterson-UTI Reports Drilling Activity for March 2013

            Patterson-UTI Reports Drilling Activity for March 2013

PR Newswire

HOUSTON, April 3, 2013

HOUSTON, April 3, 2013 /PRNewswire/ --PATTERSON-UTI ENERGY, INC. (NASDAQ:
PTEN) today reported that for the month of March 2013, the Company had an
average of 190 drilling rigs operating in the United States and 9 rigs in
Canada. For the three months ended March 31, 2013, the Company had an average
of 188 drilling rigs operating in the United States and 11 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 have more
than 300 marketable land-based drilling rigs and operate primarily in oil and
natural gas producing regions in the continental United States, Alaska, and
western and northern 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 www.patenergy.com.

Statements made in this press release which state the Company's or
management's intentions, beliefs, expectations or predictions for the future
are forward-looking statements. It is important to note that actual results
could differ materially from those discussed in such forward-looking
statements. Important factors that could cause actual results to differ
materially include, but are not limited to, deterioration of global economic
conditions, declines in customer spending and in oil and natural gas prices
that could adversely affect demand for the Company's services, and their
associated effect on rates, utilization, margins and planned capital
expenditures, excess availability of land drilling rigs and pressure pumping
equipment, including as a result ofreactivation or construction, adverse
industry conditions, adverse credit and equity market conditions, difficulty
in integrating acquisitions, shortages of labor, equipment, supplies and
materials, supplier issues, weather, loss of key customers, liabilities from
operations, changes in technology and efficiencies, governmental regulation
and ability to retain management and field personnel. Additional information
concerning factors that could cause actual results to differ materially from
those in the forward-looking statements is contained from time to time in the
Company's SEC filings, which may be obtained by contacting the Company or the
SEC. These filings are also available through the Company's web site at
http://www.patenergy.com or through the SEC's Electronic Data Gathering and
Analysis Retrieval System (EDGAR) at http://www.sec.gov. We undertake no
obligation to publicly update or revise any forward-looking statement.

SOURCE PATTERSON-UTI ENERGY, INC.

Website: http://www.patenergy.com
Contact: Mike Drickamer, Director, Investor Relations, Patterson-UTI Energy,
Inc., +1-281-765-7170