Mark S. Siegel, Chairman, Douglas Wall, CEO and Cloyce Talbott, former CEO of Patterson-UTI Energy, Inc. preside over the opening bell.

Wednesday September 5, 2007
from Nasdaq MarketSite
in New York's Times Square

Patterson-UTI Energy, Inc.
[PTEN]

Patterson-UTI Energy, Inc. provides onshore contract drilling services to exploration and production companies in North America. The Company has approximately 345 currently marketable land-based drilling rigs that operate primarily in oil and natural gas producing regions of Texas, New Mexico, Oklahoma, Arkansas, Louisiana, Mississippi, Colorado, Utah, Wyoming, Montana, North Dakota, South Dakota, Pennsylvania and western Canada. Patterson-UTI Energy, Inc. is also engaged in the businesses of pressure pumping services and drilling and completion fluid services. Additionally, the Company has an exploration and production business.

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Click for larger pictures of the NASDAQ MarketSite. Additional Photographs for 09/05/2007 Download Hi-Res Quality Photo of this NASDAQ Market Open - Pictured: Douglas Wall, CEO and Cloyce Talbott, former CEO and Mark S. Siegel, Chairman of Patterson-UTI Energy, Inc., preside over the opening bell. Organizations interested in obtaining NASDAQ-listed company bell ringing ceremony photographs for press purposes, must first receive approval from the listed company before requesting photographs from NASDAQ. Please provide the company contact information from whom you received approval to Jolene Libretto at Jolene.Libretto@nasdaq.com. Kindly credit © 2007, The Nasdaq Stock Market, Inc. Reprinted with permission. © Copyright 2007, The NASDAQ Stock Market, Inc. Reprinted with the permission of The Nasdaq Stock Market, Inc.