UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ______________________ Form 10-Q ______________________ þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-39270 ______________________ Patterson-UTI Energy, Inc. (Exact name of registrant as specified in its charter) ______________________ (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 1 ...