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FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
WALL DOUGLAS JAMES

(Last)(First)(Middle)
450 GEARS ROAD, SUITE 500

(Street)
HOUSTONTX77067

(City)(State)(Zip)
2. Issuer Name and Ticker or Trading Symbol
PATTERSON UTI ENERGY INC [PTEN]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Executive Officer
3. Date of Earliest Transaction (Month/Day/Year)
04/28/2009
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)
7. Nature of Indirect Beneficial Ownership
(Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock, $.01 par value per share 04/28/2009 A  73,500 (1) A$ 0 233,292 D  

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)
6. Date Exercisable and Expiration Date
(Month/Day/Year)
7. Title and Amount of Underlying Securities
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)
10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)
11. Nature of Indirect Beneficial Ownership
(Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy) $ 13.17 04/28/2009 A  262,500   (2)04/27/2019 Common Stock, $.01 par value per share 262,500 $ 0 262,500 D  
Explanation of Responses:
1. One-third of the shares vest on April 28, 2010 and the remainder vests in equal monthly installments over the twenty-four months following April 28, 2010.
2. One-third of the options vest on April 28, 2010 and the remainder vests in equal monthly installments over the twenty-four months following April 28, 2010.
By Gregory W. Pipkin pursuant to a Limited Power of Attorney filed with the SEC on 4/30/2009. /s/Gregory W. Pipkin04/30/2009
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

                   LIMITED POWER OF ATTORNEY

The undersigned, Douglas J. Wall, hereby authorizes each of John E. Vollmer III,
Kenneth N. Berns, William L. Moll, Jr. and Gregory W. Pipkin (with full power to
each of them to act alone), as the undersigned's true and lawful
attorney-in-fact, with full power of substitution to:

(1)prepare and sign in the name of and on behalf of the undersigned any and all
forms and reports required to be filed pursuant to Section 16 of the Securities
Exchange Act of 1934 and the rules thereunder, including, but without
limitation, Form 3-Initial Statement of Beneficial Ownership of Shares of
Securities, Form 4-Statement of Changes of Beneficial Ownership of Securities,
and Form 5-Annual Statement of Beneficial Ownership of Securities;

(2)perform any and all acts for and on behalf of the undersigned which may be
necessary or desirable to complete and execute any such Forms 3, 4 or 5, or
other form or report, and timely file such form or report with the United States
Securities and Exchange Commission and any stock exchange or similar authority;
and

(3)take any other action of any type in connection with the foregoing which, in
the opinion of the attorney-in-fact, may be of benefit to, in the best interest
of, or legally required by, the undersigned, it being understood that the
documents executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Limited Power of Attorney shall be in such form and shall
contain such terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full power to do and
perform any and every act requisite, necessary or proper to be done in the
exercise of any of the rights or powers herein granted, as fully to all intents
and purposes as the undersigned might or could do if personally present, with
full power of substitution or revocation, hereby ratifying and confirming all
that such attorney-in-fact, or such attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done by virtue of this Limited
Power of Attorney and the rights and powers herein granted.  The undersigned
acknowledges that the foregoing attorney-in-fact, in serving in such capacity at
the request of the undersigned, is not assuming any of the undersigned's
responsibilities to comply with Section 16 of the Securities Exchange Act of
1934.

This Limited Power of Attorney shall remain in effect until the undersigned is
no longer required to file Forms 3, 4 and 5 with respect to the undersigned's
beneficial ownership of securities, unless earlier revoked by the undersigned in
a signed and dated writing delivered to each of the foregoing attorneys-in-fact.
 

By execution of this Limited Power of Attorney, the undersigned revokes all
powers previously granted with respect to the preparation, execution and filing
of Section 16 forms and reports.

EXECUTED THIS 30TH DAY OF OCTOBER, 2007
/s/Douglas J. Wall
Name:Douglas J. Wall

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