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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">



<P align="center" style="font-size: 10pt">As filed with the Securities and Exchange Commission on June&nbsp;21, 2005.



<DIV align="right" style="font-size: 10pt">Registration No. ___-____________</DIV>



<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>




<P align="center" style="font-size: 14pt"><B>UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION</B>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>


<DIV align="center">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>



<P align="center" style="font-size: 18pt"><B>FORM S-8</B>


<P align="center" style="font-size: 12pt"><B>REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933</B>


<DIV align="center">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>



<P align="center" style="font-size: 24pt"><B>PATTERSON-UTI ENERGY, INC.</B>


<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>Delaware</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>75-2504748</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(State or other jurisdiction of incorporation or
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(I.R.S. Employer</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">Identification No.)</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>4510 Lamesa Hwy.</B></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>Snyder, Texas</B>
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>79549</B></TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top">(Address of Principal Executive Offices)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">(Zip Code)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt"><B>Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan</B>


<DIV align="center" style="font-size: 10pt">(Full title of the plans)</DIV>



<DIV align="center">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>




<P align="center" style="font-size: 10pt"><B>Jonathan D. Nelson<BR>
Vice President, Chief Financial Officer, Secretary and Treasurer<BR>
Patterson-UTI Energy, Inc.<BR>
4510 Lamesa Hwy<BR>
Snyder, Texas 79549</B><BR>
(Name and address of agent for service)



<P align="center" style="font-size: 10pt"><B>(325)&nbsp;574-6300</B><BR>
(Telephone number, including area code, of agent for service )



<P align="center" style="font-size: 10pt"><I>With Copy to</I>:



<P align="center" style="font-size: 10pt"><B>Fulbright &#038; Jaworski L.L.P.<BR>
Fulbright Tower<BR>
1301 McKinney, Suite&nbsp;5100<BR>
Houston, Texas 77010-3095<BR>
(713)&nbsp;651-5151<BR>
Attention: Michael W. Conlon</B>



<DIV align="center">
<DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV>
</DIV>




<P align="center" style="font-size: 10pt"><B>Calculation of Registration Fee</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="21%">&nbsp;</TD>
    <TD width="0%">&nbsp;</TD><!-- VRule -->
    <TD width="0%">&nbsp;</TD>
    <TD width="19%">&nbsp;</TD>
    <TD width="0%">&nbsp;</TD><!-- VRule -->
    <TD width="0%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="0%">&nbsp;</TD><!-- VRule -->
    <TD width="0%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="0%">&nbsp;</TD><!-- VRule -->
    <TD width="0%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="21" style="border-bottom: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center"><B>Title of each</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed maximum</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Proposed maximum</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center"><B>class of securities</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>Amount to be</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>offering price per</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>aggregate offering</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>Amount of</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="center"><B>to be registered</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><B>registered(1)</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>share (2)</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>price (2)</B></TD>
    <TD style="border-right: 1px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>registration fee</B></TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
                    <TD valign="top" style="border-top: 1px solid #000000"><DIV style="margin-left:0px; text-indent:-0px">Common Stock, $0.01
par value per share
</DIV></TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD align="center" valign="middle" style="border-top: 1px solid #000000">6,250,000 shares
</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="middle" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" valign="middle" style="border-top: 1px solid #000000">28.51</TD>
    <TD nowrap valign="middle" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="middle" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" valign="middle" style="border-top: 1px solid #000000">178,187,500</TD>
    <TD nowrap valign="middle" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-right: 1px solid #000000; border-top: 1px solid #000000">&nbsp;</TD>
    <TD style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD nowrap align="right" valign="middle" style="border-top: 1px solid #000000">$</TD>
    <TD align="right" valign="middle" style="border-top: 1px solid #000000">20,973</TD>
    <TD nowrap valign="middle" style="border-top: 1px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="21" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>

<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>In addition, pursuant to Rule 416(c) under the Securities Act, this registration statement
also covers an indeterminate amount of interests to be offered or sold pursuant to the
employee benefit plan described herein. Also includes an indeterminable number of shares of
Common Stock issuable as a result of the anti-dilution provisions of the plan.</TD>
</TR>

</TABLE>


<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(h)
under the Securities Act of 1933, as amended (the &#147;Securities Act&#148;), and based upon the
average of the high and low sales price of a share of Common Stock of Patterson-UTI Energy,
Inc. as reported by the NASDAQ Stock Market on June&nbsp;15, 2005.</TD>
</TR>

</TABLE>


<DIV style="width: 100%; border-bottom: 1pt solid black; margin-top: 10pt; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>



<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

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<DIV style="font-family: 'Times New Roman',Times,serif">






<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD colspan="9"><A HREF="#000">PART II</A></TD></TR>
<TR><TD colspan="9"><A HREF="#001">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;3. Incorporation of Documents by Reference.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;4. Description of Securities.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;5. Interests of Named Experts and Counsel.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">Item&nbsp;6. Indemnification of Directors and Officers.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;7. Exemption from Registration Claimed.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">Item&nbsp;8. Exhibits</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#008">Item&nbsp;9. Undertakings.</A></TD></TR>
<TR><TD colspan="9"><A HREF="#009">SIGNATURES</A></TD></TR>
<TR><TD colspan="9"><A HREF="#010">POWER OF ATTORNEY</A></TD></TR>
<TR><TD colspan="9"><A HREF="#011">EXHIBIT INDEX</A></TD></TR>
<TR><TD colspan="9"><A HREF="h26397exv5w1.htm">Opinion of Fulbright & Jaworski L.L.P.</A></TD></TR>
<TR><TD colspan="9"><A HREF="h26397exv23w1.htm">Consent of PricewaterhouseCoopers LLP</A></TD></TR>
<TR><TD colspan="9"><A HREF="h26397exv23w3.htm">Consent of M. Brian Wallace</A></TD></TR>
</TABLE>
</CENTER>
<!-- /TOC -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>




<!-- link1 "PART II" -->
<DIV align="left"><A NAME="000"></A></DIV>

<P align="center" style="font-size: 10pt"><B>PART II</B>


<!-- link1 "INFORMATION REQUIRED IN THE REGISTRATION STATEMENT" -->
<DIV align="left"><A NAME="001"></A></DIV>

<P align="center" style="font-size: 10pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>


<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference." -->
<DIV align="left"><A NAME="002"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The following documents, which were filed by Patterson-UTI Energy, Inc. (the &#147;Registrant&#148;)
with the Securities and Exchange Commission (the &#147;Commission&#148;), and any future filings made by the
Registrant with the Commission under Sections&nbsp;13(a), 13(c), 14 and 15(d) of the Securities Exchange
Act of 1934, as amended (the &#147;Exchange Act&#148;), prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement
and to be a part hereof from the date of filing of such documents:


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">1.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Annual report on Form 10-K for the fiscal year ended December&nbsp;31, 2004, filed with the
Commission on February&nbsp;25, 2005;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">2.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Quarterly report on Form 10-Q for the quarter ended March&nbsp;31, 2005, filed with the Commission
on April&nbsp;29, 2005;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">3.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Current report on Form 8-K, filed with the Commission on April&nbsp;29, 2005;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">4.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Current report on Form 8-K, filed with the Commission on June&nbsp;21, 2005;</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">5.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of the Registrant&#146;s common stock, $0.01 par value per share (the &#147;Common
Stock&#148;), contained in the Registrant&#146;s current report on Form 8-K, filed with the Commission
on June&nbsp;21, 2005, as such may be amended from time to time; and</TD>
</TR>

<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">6.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of the Registrant&#146;s Preferred Stock Purchase Rights contained in the
Registrant&#146;s Registration Statement on Form 8-A, which became effective on January&nbsp;14, 1997.</TD>
</TR>

</TABLE>

<!-- link2 "Item&nbsp;4. Description of Securities." -->
<DIV align="left"><A NAME="003"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;4. Description of Securities.</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel." -->
<DIV align="left"><A NAME="004"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.

<!-- link2 "Item&nbsp;6. Indemnification of Directors and Officers." -->
<DIV align="left"><A NAME="005"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Section&nbsp;145 of the Delaware General Corporation Law (&#147;DGCL&#148;) allows a corporation to indemnify
directors, officers, employees and agents for costs and expenses incurred by or in connection with
an action, suit or proceeding brought by reason of their position as a director, officer, employee
or agent. The person indemnified must have acted in good faith and in a manner he reasonably
believed to be in or not opposed to the best interests of the corporation. The DGCL provides that a
corporation may advance payment of expenses under certain circumstances. The DGCL further provides
that the indemnification and advancement of expenses provisions of the DGCL will not be deemed
exclusive of any other rights of indemnification or advancement of expenses to which directors,
officers, employees and agents may be entitled under bylaw, agreement, vote of stockholders or
disinterested directors or otherwise, both as to action in such person&#146;s official capacity and as
to action in another capacity while holding such office.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In addition to the general indemnification section, Delaware law provides further protection
for directors under Section&nbsp;102(b)(7) of the DGCL. This section allows a Delaware corporation to
include in its certificate of incorporation a provision that eliminates or limits the personal
liability of a director for monetary damages for breaches


<P align="center" style="font-size: 10pt">II-1
</DIV>

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<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<P align="left" style="font-size: 10pt">of the director&#146;s fiduciary duty of care, provided that any such provision does not (in the words
of the statute) do any of the following:


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>&#091;E&#093;liminate or limit the liability of a director (i)&nbsp;for any breach of the director&#146;s duty of
loyalty to the corporation or its stockholders, (ii)&nbsp;for acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii)&nbsp;under Section&nbsp;174 of this
Title &#091;dealing with willful or negligent violation of the statutory provision concerning dividends
and stock purchases and redemptions&#093;, or (iv)&nbsp;for any transaction from which the director derived an improper personal benefit. No such
provision shall eliminate or limit the liability of a director for any act or omission occurring prior
to the date when such provision becomes effective.</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The DGCL further empowers the board of directors to make other indemnification as authorized
under the certificate of incorporation, bylaws or any corporate resolution or agreement so long as
the indemnification is consistent with the DGCL.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant&#146;s Restated Certificate of Incorporation provides that, to the fullest extent
permitted by the DGCL, a director of the Registrant will not be liable to the Registrant or its
stockholders for monetary damages for breach of fiduciary duty as a director. The Registrant&#146;s
Amended and Restated Bylaws provide that, to the maximum extent and in the manner permitted by the
DGCL, the Registrant shall indemnify its directors, officers, employees and agents against expenses
(including attorneys&#146; fees), judgments, fines, settlements and other amounts actually and
reasonably incurred in connection with any proceeding arising by reason of the fact that such
person is or was an agent of the Registrant, provided, however, that the Registrant may modify the
extent of such indemnification by individual contracts with its directors and officers and,
provided further, that the Registrant shall not be required to indemnify any director or officer in
connection with any proceeding (or part thereof) initiated by such person unless (i)&nbsp;such
indemnification is expressly required to be made by law, (ii)&nbsp;the proceeding was authorized in
advance by the board of directors of the Registrant, (iii)&nbsp;such indemnification is provided by the
Registrant, in its sole discretion, pursuant to the powers vested in the Registrant under the DGCL
or (iv)&nbsp;such indemnification is required to be made pursuant to an individual contract. The
Registrant&#146;s Amended and Restated Bylaws also provide that the Registrant may advance the payment
of expenses, upon receipt of an undertaking by or on behalf of such person to repay such amounts if
it should be determined ultimately that such person is not entitled to be indemnified under the
bylaws or otherwise, and that the indemnification and advancement of expense provisions of the
bylaws are nonexclusive. The Registrant maintains director and officer liability insurance covering
director and officer indemnification.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The Registrant has an Indemnity Agreement with each of its directors and executive officers.
The standard for indemnification under the Indemnity Agreement is substantially the same as under
the Registrant&#146;s Amended and Restated Bylaws. The Indemnity Agreement, however, provides for the
creation of a trust account in the event of a &#147;change in control&#148; (as defined in the Indemnity
Agreement), funded in an amount sufficient to reasonably satisfy any and all expenses incurred by a
director or executive officer in connection with investigating, preparing for, participating in,
and/or defending any proceeding relating to any Indemnifiable Event (as defined in the Indemnity
Agreement). The trustee of such trust account is to be selected by the director or executive
officer receiving the indemnity under the Indemnity Agreement.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;In the Agreement and Plan of Merger between Patterson Energy, Inc. and UTI Energy Corp. dated
as of February&nbsp;4, 2001, pursuant to which UTI Energy Corp. (&#147;UTI&#148;) merged with and into Patterson
Energy, Inc. with the Registrant as the surviving corporation (the &#147;UTI Merger&#148;), the Registrant
agreed to indemnify the former officers and directors of UTI (some of whom are current officers and
directors of the Registrant) from liabilities arising out of actions or omissions in their capacity
as such prior to the effective time of the UTI Merger, and advance reasonable litigation expenses
incurred in connection with such actions or omissions, to the full extent permitted under UTI&#146;s
certificate of incorporation and bylaws. Further, for a period of six years after the effective
time of the UTI Merger, the Registrant will provide UTI&#146;s officers and directors with an insurance
and indemnification policy that provides coverage for acts or omissions through the effective time
of the UTI Merger; provided that the maximum aggregate amount of premiums that the Registrant will
be required to pay to provide and maintain this coverage does not exceed $300,000 per year.

<!-- link2 "Item&nbsp;7. Exemption from Registration Claimed." -->
<DIV align="left"><A NAME="006"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;7. Exemption from Registration Claimed.</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Not applicable.


<P align="center" style="font-size: 10pt">II-2
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link2 "Item&nbsp;8. Exhibits" -->
<DIV align="left"><A NAME="007"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;8. Exhibits</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description of Exhibit</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Restated Certificate of Incorporation, as amended (filed August
9, 2004 as Exhibit&nbsp;3.1 to the Registrant&#146;s Quarterly Report on
Form&nbsp;10-Q for the quarterly period ended June&nbsp;30, 2004 and
incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amendment to Restated Certificate of Incorporation, as amended
(filed August&nbsp;9, 2004 as Exhibit&nbsp;3.2 to the Registrant&#146;s
Quarterly Report on Form 10-Q for the quarterly period ended
June&nbsp;30, 2004 and incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws (filed March&nbsp;19, 2002 as Exhibit&nbsp;3.2
to the Registrant&#146;s Annual Report on Form&nbsp;10-K for the fiscal
year ended December&nbsp;31, 2001 and incorporated herein by
reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.4
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Rights Agreement dated January&nbsp;2, 1997, between Patterson
Energy, Inc. and Continental Stock Transfer &#038; Trust Company
(filed January&nbsp;14, 1997 as Exhibit&nbsp;2 to the Registrant&#146;s
Registration Statement on Form&nbsp;8-A and incorporated herein by
reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.5
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amendment to Rights Agreement dated as of October&nbsp;23, 2001
(filed October&nbsp;31, 2001 as Exhibit&nbsp;3.4 to the Registrant&#146;s
Quarterly Report on Form&nbsp;10-Q for the quarterly period ended
September&nbsp;30, 2001 and incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.6
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan,
including Form of Executive Officer Restricted Stock Award
Agreement, Form of Executive Officer Stock Option Agreement,
Form of Non-Employee Director Restricted Stock Award Agreement
and Form of Non-Employee Director Stock Option Agreement
(filed June&nbsp;21, 2005 as Exhibit&nbsp;10.1 to the Registrant&#146;s Current
Report on Form&nbsp;8-K and incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Fulbright &#038; Jaworski L.L.P.</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of PricewaterhouseCoopers LLP.</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Fulbright &#038; Jaworski L.L.P. (included in Exhibit&nbsp;5.1).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of M. Brian Wallace.</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included in signature page II-5).</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<!-- link2 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="008"></A></DIV>

<P align="left" style="font-size: 10pt"><B>Item&nbsp;9. Undertakings.</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;The undersigned registrant hereby undertakes:


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.&nbsp;To file, during any period in which offers or sales are being made, a post-effective
amendment to this registration statement:



<P align="left" style="margin-left:3%; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) To include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act of
1933;



<P align="left" style="margin-left:3%; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) To reflect in the prospectus any facts or events arising after the effective date
of the registration statement (or the most recent post-effective amendment hereof) which,
individually or in the aggregate, represent a fundamental change in the information set
forth in the registration statement;



<P align="left" style="margin-left:3%; font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such
information in the registration statement;

<P align="left" style="font-size: 10pt"><I>provided, however, </I>that the undertakings set forth in clauses (i)&nbsp;and (ii)&nbsp;above do not apply if
the information required to be included in a post-effective amendment by those clauses is contained
in periodic reports filed with or furnished to the Commission by the registrant pursuant to Section
13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in
this Registration Statement.



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.&nbsp;That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial <I>bona fide </I>offering thereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.&nbsp;To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;The undersigned registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act of 1933, each filing of the registrant&#146;s annual report pursuant
to Section 13(a) or Section 15(d) of the


<P align="center" style="font-size: 10pt">II-3
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<P align="left" style="font-size: 10pt">Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan&#146;s annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in this Registration Statement shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such securities at that
time shall be deemed to be the initial <I>bona fide </I>offering thereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the registrant pursuant to the
foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed in
the Act and is, therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred or paid by a
director, officer or controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with
the securities being registered, the registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.


<P align="center" style="font-size: 10pt">II-4
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "SIGNATURES" -->
<DIV align="left"><A NAME="009"></A></DIV>

<P align="center" style="font-size: 10pt"><B>SIGNATURES</B>



<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it
has reasonable grounds to believe it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Snyder, State of Texas on the 21st day of June, 2005.


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">PATTERSON-UTI ENERGY, INC.<BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" style="border-bottom: 1px solid #000000" align="left">/s/ Cloyce A. Talbott
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Cloyce A. Talbott&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>
<!-- link1 "POWER OF ATTORNEY" -->
<DIV align="left"><A NAME="010"></A></DIV>

<P align="center" style="font-size: 10pt"><B>POWER OF ATTORNEY</B>




<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KNOW ALL MEN BY THESE PRESENTS, that the persons whose signatures appear below constitute and
appoint Cloyce A. Talbott and A. Glenn Patterson, and each of them, as true and lawful
attorneys-in-fact and agents with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities, to sign the Form S-8 Registration Statement
pertaining to the Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan, and any or all
amendments (including post-effective amendments) to said Form S-8 Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the
Commission, granting unto said attorneys-in-fact and agents full power and authority to do and
perform each and every act and thing requisite and necessary to be done, as fully to all intents
and purposes as he might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or their substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.


<P align="left" style="font-size: 10pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed by the following persons in the capacities and on the dates indicated.

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Signature</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Title</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Date</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="middle">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Mark S. Siegel
<HR size="1" noshade color="#000000">
Mark S. Siegel</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Chairman of the Board and Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Cloyce A. Talbott
<HR size="1" noshade color="#000000">
Cloyce A. Talbott</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Chief Executive Officer and Director<BR>
(Principal Executive Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ A. Glenn Patterson
<HR size="1" noshade color="#000000">
A. Glenn Patterson</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
President, Chief Operating Officer
and Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Jonathan D. Nelson
<HR size="1" noshade color="#000000">
Jonathan D. Nelson</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Vice President, Chief Financial
Officer, Secretary and Treasurer
(Principal Financial and
Accounting Officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Kenneth N. Berns
<HR size="1" noshade color="#000000">
Kenneth N. Berns</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Senior Vice President and Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Robert C. Gist
<HR size="1" noshade color="#000000">
Robert C. Gist</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">II-5
</DIV>

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<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="25%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Signature</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Title</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000">Date</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Curtis W. Huff
<HR size="1" noshade color="#000000">
Curtis W. Huff</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Terry H. Hunt
<HR size="1" noshade color="#000000">
Terry H. Hunt</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Kenneth R. Peak
<HR size="1" noshade color="#000000">
Kenneth R. Peak</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" valign="middle">/s/ Nadine C. Smith
<HR size="1" noshade color="#000000">
Nadine C. Smith</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="middle">June 21,2005</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">II-6
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link1 "EXHIBIT INDEX" -->
<DIV align="left"><A NAME="011"></A></DIV>

<P align="center" style="font-size: 10pt"><B>EXHIBIT INDEX</B>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="87%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><B>Description of Exhibit</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Restated Certificate of Incorporation, as amended (filed August
9, 2004 as Exhibit&nbsp;3.1 to the Registrant&#146;s Quarterly Report on
Form&nbsp;10-Q for the quarterly period ended June&nbsp;30, 2004 and
incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amendment to Restated Certificate of Incorporation, as amended
(filed August&nbsp;9, 2004 as Exhibit&nbsp;3.2 to the Registrant&#146;s
Quarterly Report on Form 10-Q for the quarterly period ended
June&nbsp;30, 2004 and incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Bylaws (filed March&nbsp;19, 2002 as Exhibit&nbsp;3.2
to the Registrant&#146;s Annual Report on Form&nbsp;10-K for the fiscal
year ended December&nbsp;31, 2001 and incorporated herein by
reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.4
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Rights Agreement dated January&nbsp;2, 1997, between Patterson
Energy, Inc. and Continental Stock Transfer &#038; Trust Company
(filed January&nbsp;14, 1997 as Exhibit&nbsp;2 to the Registrant&#146;s
Registration Statement on Form&nbsp;8-A and incorporated herein by
reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.5
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amendment to Rights Agreement dated as of October&nbsp;23, 2001
(filed October&nbsp;31, 2001 as Exhibit&nbsp;3.4 to the Registrant&#146;s
Quarterly Report on Form&nbsp;10-Q for the quarterly period ended
September&nbsp;30, 2001 and incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;4.6
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan,
including Form of Executive Officer Restricted Stock Award
Agreement, Form of Executive Officer Stock Option Agreement,
Form of Non-Employee Director Restricted Stock Award Agreement
and Form of Non-Employee Director Stock Option Agreement
(filed June&nbsp;21, 2005 as Exhibit&nbsp;10.1 to the Registrant&#146;s Current
Report on Form&nbsp;8-K and incorporated herein by reference).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">&nbsp;&nbsp;5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Fulbright &#038; Jaworski L.L.P.</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of PricewaterhouseCoopers LLP.</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Fulbright &#038; Jaworski L.L.P. (included in Exhibit&nbsp;5.1).</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of M. Brian Wallace.</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&#151;
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of Attorney (included in signature page II-5).</TD>
</TR>
<!-- End Table Body -->
</TABLE>
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</DIV>

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sv8
Table of Contents
As filed with the Securities and Exchange Commission on June 21, 2005.
Registration No. ___-____________
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM S-8
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
PATTERSON-UTI ENERGY, INC.
(Exact name of registrant as specified in its charter)
Delaware
75-2504748
(State or other jurisdiction of incorporation or
(I.R.S. Employer
organization)
Identification No.)
4510 Lamesa Hwy.
Snyder, Texas
79549
(Address of Principal Executive Offices)
(Zip Code)
Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan
(Full title of the plans)
Jonathan D. Nelson
Vice President, Chief Financial Officer, Secretary and Treasurer
Patterson-UTI Energy, Inc.
4510 Lamesa Hwy
Snyder, Texas 79549
(Name and address of agent for service)
(325) 574-6300
(Telephone number, including area code, of agent for service )
With Copy to
:
Fulbright & Jaworski L.L.P.
Fulbright Tower
1301 McKinney, Suite 5100
Houston, Texas 77010-3095
(713) 651-5151
Attention: Michael W. Conlon
Calculation of Registration Fee
Title of each
Proposed maximum
Proposed maximum
class of securities
Amount to be
offering price per
aggregate offering
Amount of
to be registered
registered(1)
share (2)
price (2)
registration fee
Common Stock, $0.01
par value per share
6,250,000 shares
$
28.51
$
178,187,500
$
20,973
(1)
In addition, pursuant to Rule 416(c) under the Securities Act, this registration statement
also covers an indeterminate amount of interests to be offered or sold pursuant to the
employee benefit plan described herein. Also includes an indeterminable number of shares of
Common Stock issuable as a result of the anti-dilution provisions of the plan.
(2)
Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(h)
under the Securities Act of 1933, as amended (the "Securities Act"), and based upon the
average of the high and low sales price of a share of Common Stock of Patterson-UTI Energy,
Inc. as reported by the NASDAQ Stock Market on June 15, 2005.
TABLE OF CONTENTS
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
Item 4. Description of Securities.
Item 5. Interests of Named Experts and Counsel.
Item 6. Indemnification of Directors and Officers.
Item 7. Exemption from Registration Claimed.
Item 8. Exhibits
Item 9. Undertakings.
SIGNATURES
POWER OF ATTORNEY
EXHIBIT INDEX
Opinion of Fulbright & Jaworski L.L.P.
Consent of PricewaterhouseCoopers LLP
Consent of M. Brian Wallace
Table of Contents
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following documents, which were filed by Patterson-UTI Energy, Inc. (the "Registrant")
with the Securities and Exchange Commission (the "Commission"), and any future filings made by the
Registrant with the Commission under Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), prior to the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement
and to be a part hereof from the date of filing of such documents:
1.
Annual report on Form 10-K for the fiscal year ended December 31, 2004, filed with the
Commission on February 25, 2005;
2.
Quarterly report on Form 10-Q for the quarter ended March 31, 2005, filed with the Commission
on April 29, 2005;
3.
Current report on Form 8-K, filed with the Commission on April 29, 2005;
4.
Current report on Form 8-K, filed with the Commission on June 21, 2005;
5.
The description of the Registrant's common stock, $0.01 par value per share (the "Common
Stock"), contained in the Registrant's current report on Form 8-K, filed with the Commission
on June 21, 2005, as such may be amended from time to time; and
6.
The description of the Registrant's Preferred Stock Purchase Rights contained in the
Registrant's Registration Statement on Form 8-A, which became effective on January 14, 1997.
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts and Counsel.
Not applicable.
Item 6. Indemnification of Directors and Officers.
Section 145 of the Delaware General Corporation Law ("DGCL") allows a corporation to indemnify
directors, officers, employees and agents for costs and expenses incurred by or in connection with
an action, suit or proceeding brought by reason of their position as a director, officer, employee
or agent. The person indemnified must have acted in good faith and in a manner he reasonably
believed to be in or not opposed to the best interests of the corporation. The DGCL provides that a
corporation may advance payment of expenses under certain circumstances. The DGCL further provides
that the indemnification and advancement of expenses provisions of the DGCL will not be deemed
exclusive of any other rights of indemnification or advancement of expenses to which directors,
officers, employees and agents may be entitled under bylaw, agreement, vote of stockholders or
disinterested directors or otherwise, both as to action in such person's official capacity and as
to action in another capacity while holding such office.
In addition to the general indemnification section, Delaware law provides further protection
for directors under Section 102(b)(7) of the DGCL. This section allows a Delaware corporation to
include in its certificate of incorporation a provision that eliminates or limits the personal
liability of a director for monetary damages for breaches
II-1
Table of Contents
of the director's fiduciary duty of care, provided that any such provision does not (in the words
of the statute) do any of the following:
[E]liminate or limit the liability of a director (i) for any breach of the director's duty of
loyalty to the corporation or its stockholders, (ii) for acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of this
Title [dealing with willful or negligent violation of the statutory provision concerning dividends
and stock purchases and redemptions], or (iv) for any transaction from which the director derived an improper personal benefit. No such
provision shall eliminate or limit the liability of a director for any act or omission occurring prior
to the date when such provision becomes effective.
The DGCL further empowers the board of directors to make other indemnification as authorized
under the certificate of incorporation, bylaws or any corporate resolution or agreement so long as
the indemnification is consistent with the DGCL.
The Registrant's Restated Certificate of Incorporation provides that, to the fullest extent
permitted by the DGCL, a director of the Registrant will not be liable to the Registrant or its
stockholders for monetary damages for breach of fiduciary duty as a director. The Registrant's
Amended and Restated Bylaws provide that, to the maximum extent and in the manner permitted by the
DGCL, the Registrant shall indemnify its directors, officers, employees and agents against expenses
(including attorneys' fees), judgments, fines, settlements and other amounts actually and
reasonably incurred in connection with any proceeding arising by reason of the fact that such
person is or was an agent of the Registrant, provided, however, that the Registrant may modify the
extent of such indemnification by individual contracts with its directors and officers and,
provided further, that the Registrant shall not be required to indemnify any director or officer in
connection with any proceeding (or part thereof) initiated by such person unless (i) such
indemnification is expressly required to be made by law, (ii) the proceeding was authorized in
advance by the board of directors of the Registrant, (iii) such indemnification is provided by the
Registrant, in its sole discretion, pursuant to the powers vested in the Registrant under the DGCL
or (iv) such indemnification is required to be made pursuant to an individual contract. The
Registrant's Amended and Restated Bylaws also provide that the Registrant may advance the payment
of expenses, upon receipt of an undertaking by or on behalf of such person to repay such amounts if
it should be determined ultimately that such person is not entitled to be indemnified under the
bylaws or otherwise, and that the indemnification and advancement of expense provisions of the
bylaws are nonexclusive. The Registrant maintains director and officer liability insurance covering
director and officer indemnification.
The Registrant has an Indemnity Agreement with each of its directors and executive officers.
The standard for indemnification under the Indemnity Agreement is substantially the same as under
the Registrant's Amended and Restated Bylaws. The Indemnity Agreement, however, provides for the
creation of a trust account in the event of a "change in control" (as defined in the Indemnity
Agreement), funded in an amount sufficient to reasonably satisfy any and all expenses incurred by a
director or executive officer in connection with investigating, preparing for, participating in,
and/or defending any proceeding relating to any Indemnifiable Event (as defined in the Indemnity
Agreement). The trustee of such trust account is to be selected by the director or executive
officer receiving the indemnity under the Indemnity Agreement.
In the Agreement and Plan of Merger between Patterson Energy, Inc. and UTI Energy Corp. dated
as of February 4, 2001, pursuant to which UTI Energy Corp. ("UTI") merged with and into Patterson
Energy, Inc. with the Registrant as the surviving corporation (the "UTI Merger"), the Registrant
agreed to indemnify the former officers and directors of UTI (some of whom are current officers and
directors of the Registrant) from liabilities arising out of actions or omissions in their capacity
as such prior to the effective time of the UTI Merger, and advance reasonable litigation expenses
incurred in connection with such actions or omissions, to the full extent permitted under UTI's
certificate of incorporation and bylaws. Further, for a period of six years after the effective
time of the UTI Merger, the Registrant will provide UTI's officers and directors with an insurance
and indemnification policy that provides coverage for acts or omissions through the effective time
of the UTI Merger; provided that the maximum aggregate amount of premiums that the Registrant will
be required to pay to provide and maintain this coverage does not exceed $300,000 per year.
Item 7. Exemption from Registration Claimed.
Not applicable.
II-2
Table of Contents
Item 8. Exhibits
Exhibit
Number
Description of Exhibit
4.1
—
Restated Certificate of Incorporation, as amended (filed August
9, 2004 as Exhibit 3.1 to the Registrant's Quarterly Report on
Form 10-Q for the quarterly period ended June 30, 2004 and
incorporated herein by reference).
4.2
—
Amendment to Restated Certificate of Incorporation, as amended
(filed August 9, 2004 as Exhibit 3.2 to the Registrant's
Quarterly Report on Form 10-Q for the quarterly period ended
June 30, 2004 and incorporated herein by reference).
4.3
—
Amended and Restated Bylaws (filed March 19, 2002 as Exhibit 3.2
to the Registrant's Annual Report on Form 10-K for the fiscal
year ended December 31, 2001 and incorporated herein by
reference).
4.4
—
Rights Agreement dated January 2, 1997, between Patterson
Energy, Inc. and Continental Stock Transfer & Trust Company
(filed January 14, 1997 as Exhibit 2 to the Registrant's
Registration Statement on Form 8-A and incorporated herein by
reference).
4.5
—
Amendment to Rights Agreement dated as of October 23, 2001
(filed October 31, 2001 as Exhibit 3.4 to the Registrant's
Quarterly Report on Form 10-Q for the quarterly period ended
September 30, 2001 and incorporated herein by reference).
4.6
—
Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan,
including Form of Executive Officer Restricted Stock Award
Agreement, Form of Executive Officer Stock Option Agreement,
Form of Non-Employee Director Restricted Stock Award Agreement
and Form of Non-Employee Director Stock Option Agreement
(filed June 21, 2005 as Exhibit 10.1 to the Registrant's Current
Report on Form 8-K and incorporated herein by reference).
5.1
—
Opinion of Fulbright & Jaworski L.L.P.
23.1
—
Consent of PricewaterhouseCoopers LLP.
23.2
—
Consent of Fulbright & Jaworski L.L.P. (included in Exhibit 5.1).
23.3
—
Consent of M. Brian Wallace.
24.1
—
Power of Attorney (included in signature page II-5).
Item 9. Undertakings.
(a) The undersigned registrant hereby undertakes:
1. To file, during any period in which offers or sales are being made, a post-effective
amendment to this registration statement:
(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of
1933;
(ii) To reflect in the prospectus any facts or events arising after the effective date
of the registration statement (or the most recent post-effective amendment hereof) which,
individually or in the aggregate, represent a fundamental change in the information set
forth in the registration statement;
(iii) To include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such
information in the registration statement;
provided, however,
that the undertakings set forth in clauses (i) and (ii) above do not apply if
the information required to be included in a post-effective amendment by those clauses is contained
in periodic reports filed with or furnished to the Commission by the registrant pursuant to Section
13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in
this Registration Statement.
2. That, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to the
securities offered therein, and the offering of such securities at that time shall be deemed to be
the initial
bona fide
offering thereof.
3. To remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.
(b) The undersigned registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act of 1933, each filing of the registrant's annual report pursuant
to Section 13(a) or Section 15(d) of the
II-3
Table of Contents
Securities Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in this Registration Statement shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such securities at that
time shall be deemed to be the initial
bona fide
offering thereof.
(c) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the registrant pursuant to the
foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed in
the Act and is, therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred or paid by a
director, officer or controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with
the securities being registered, the registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
II-4
Table of Contents
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it
has reasonable grounds to believe it meets all of the requirements for filing on Form S-8 and has
duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Snyder, State of Texas on the 21st day of June, 2005.
PATTERSON-UTI ENERGY, INC.
/s/ Cloyce A. Talbott
Cloyce A. Talbott
Chief Executive Officer
POWER OF ATTORNEY
KNOW ALL MEN BY THESE PRESENTS, that the persons whose signatures appear below constitute and
appoint Cloyce A. Talbott and A. Glenn Patterson, and each of them, as true and lawful
attorneys-in-fact and agents with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities, to sign the Form S-8 Registration Statement
pertaining to the Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan, and any or all
amendments (including post-effective amendments) to said Form S-8 Registration Statement, and to
file the same, with all exhibits thereto, and other documents in connection therewith, with the
Commission, granting unto said attorneys-in-fact and agents full power and authority to do and
perform each and every act and thing requisite and necessary to be done, as fully to all intents
and purposes as he might or could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents or their substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has
been signed by the following persons in the capacities and on the dates indicated.
Signature
Title
Date
/s/ Mark S. Siegel
Mark S. Siegel
Chairman of the Board and Director
June 21, 2005
/s/ Cloyce A. Talbott
Cloyce A. Talbott
Chief Executive Officer and Director
(Principal Executive Officer)
June 21,2005
/s/ A. Glenn Patterson
A. Glenn Patterson
President, Chief Operating Officer
and Director
June 21,2005
/s/ Jonathan D. Nelson
Jonathan D. Nelson
Vice President, Chief Financial
Officer, Secretary and Treasurer
(Principal Financial and
Accounting Officer)
June 21,2005
/s/ Kenneth N. Berns
Kenneth N. Berns
Senior Vice President and Director
June 21,2005
/s/ Robert C. Gist
Robert C. Gist
Director
June 21,2005
II-5
Table of Contents
Signature
Title
Date
/s/ Curtis W. Huff
Curtis W. Huff
Director
June 21,2005
/s/ Terry H. Hunt
Terry H. Hunt
Director
June 21,2005
/s/ Kenneth R. Peak
Kenneth R. Peak
Director
June 21,2005
/s/ Nadine C. Smith
Nadine C. Smith
Director
June 21,2005
II-6
Table of Contents
EXHIBIT INDEX
Exhibit
Number
Description of Exhibit
4.1
—
Restated Certificate of Incorporation, as amended (filed August
9, 2004 as Exhibit 3.1 to the Registrant's Quarterly Report on
Form 10-Q for the quarterly period ended June 30, 2004 and
incorporated herein by reference).
4.2
—
Amendment to Restated Certificate of Incorporation, as amended
(filed August 9, 2004 as Exhibit 3.2 to the Registrant's
Quarterly Report on Form 10-Q for the quarterly period ended
June 30, 2004 and incorporated herein by reference).
4.3
—
Amended and Restated Bylaws (filed March 19, 2002 as Exhibit 3.2
to the Registrant's Annual Report on Form 10-K for the fiscal
year ended December 31, 2001 and incorporated herein by
reference).
4.4
—
Rights Agreement dated January 2, 1997, between Patterson
Energy, Inc. and Continental Stock Transfer & Trust Company
(filed January 14, 1997 as Exhibit 2 to the Registrant's
Registration Statement on Form 8-A and incorporated herein by
reference).
4.5
—
Amendment to Rights Agreement dated as of October 23, 2001
(filed October 31, 2001 as Exhibit 3.4 to the Registrant's
Quarterly Report on Form 10-Q for the quarterly period ended
September 30, 2001 and incorporated herein by reference).
4.6
—
Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan,
including Form of Executive Officer Restricted Stock Award
Agreement, Form of Executive Officer Stock Option Agreement,
Form of Non-Employee Director Restricted Stock Award Agreement
and Form of Non-Employee Director Stock Option Agreement
(filed June 21, 2005 as Exhibit 10.1 to the Registrant's Current
Report on Form 8-K and incorporated herein by reference).
5.1
—
Opinion of Fulbright & Jaworski L.L.P.
23.1
—
Consent of PricewaterhouseCoopers LLP.
23.2
—
Consent of Fulbright & Jaworski L.L.P. (included in Exhibit 5.1).
23.3
—
Consent of M. Brian Wallace.
24.1
—
Power of Attorney (included in signature page II-5).