EXHIBIT 99.1 FOR IMMEDIATE RELEASE Contact: John E. Vollmer III SVP-Corporate Development Patterson-UTI Energy, Inc. (214) 360-7800 PATTERSON-UTI ENERGY ANNOUNCES SECOND QUARTER RESULTS NET INCOME MORE THAN DOUBLES OVER PRIOR QUARTER SNYDER, TEXAS - JULY 23, 2003 - PATTERSON-UTI ENERGY, INC. (NASDAQ: PTEN) today announced financial results for the three months and six months ended June 30, 2003. The Company reported net income of $12.1 million, or $0.15 per share, for the three-month period, compared to a net loss of $3.8 million, or $0.05 per share, for the quarter ended June 30, 2002. Revenue for the quarter was $195.6 million, versus $125.4 million for the comparable three-month period in 2002. Net income for the six months ended June 30, 2003 was $17.8 million, or $0.22 per share, compared to net income of $90,000, or $0.00 per share, for the first six months of fiscal 2002. Revenue for the six-month period reached $360.9 million, compared to $253.6 million for the comparable six months in 2002. Cloyce A. Talbott, Patterson-UTI's Chief Executive Officer, commented, "Our average margin per drilling day increased to $2,230 during the second quarter of this year compared to $1,830 in the first quarter, an increase of $400. Average revenue per drilling day increased $700 over the first quarter as demand for land drilling services increased. Average costs per drilling day increased a net $300, as a result of reversing the 10 percent wage cuts that we implemented during the first quarter of 2002, partially offset by cost-savings from improved efficiency as a result of increased drilling activity. "Our average rig count increased sequentially from the first quarter, with drilling activity in the U.S. more than sufficient to compensate for the decline in drilling activity in Canada due to spring breakup. We had 195 average rigs operating in the quarter, including 5 in Canada, compared to 176 average rigs, including 15 in Canada, for the prior quarter. Thus far in the third quarter we have averaged 194 rigs operating, including 11 rigs in Canada," Talbott said. Mark S. Siegel, Chairman of Patterson-UTI Energy, stated, "Net income for the quarter more than doubled compared to the first quarter of this year on an 18 percent increase in revenue, demonstrating the earnings leverage that we are able to achieve as rig utilization increases and margins improve. "We expect further increases in rig utilization later in the year as our customers attempt to overcome natural gas production declines and meet the demand for natural gas during the winter withdrawal season. We believe that continued strong commodity prices will provide our customers with cash flow for increased investment in land drilling activities," he added. The results for the 2003 six-month period include income in the amount of $2.5 million ($1.6 million after tax) from the collection of a disputed receivable acquired in the 1999 merger with Norton Drilling Services, Inc., as well as a net of tax charge of $469,000 resulting from a change in the accounting rules (SFAS No.143) pertaining to the Company's exploration and production activities. The results for the 2002 three- and six-month periods include a pretax charge of $4.7 million ($2.8 million after tax) due to the financial failure of a workers' compensation insurance carrier that had provided coverage for the Company between 1992 and March of 2001. All references to "earnings per share" set forth in this press release are diluted earnings per share as defined within the Statement of Financial Accounting Standards No. 128. The Company will hold its quarterly conference call to discuss second quarter results today at 11:00 a.m. Eastern (10:00 a.m. Central and 8:00 a.m. Pacific). This call is being Webcast and can be accessed through Patterson-UTI's Web site at www.patenergy.com or at www.streetevents.com in the Individual Investor Center. Replay of the conference call webcast will be available at these same websites through August 6, 2003. ABOUT PATTERSON-UTI Patterson-UTI Energy, Inc. provides onshore contract drilling services to exploration and production companies in North America. Patterson-UTI owns 340 land-based drilling rigs that operate primarily in oil and natural gas producing regions of Texas, New Mexico, Oklahoma, Utah, Louisiana, Mississippi and western Canada. Patterson-UTI Energy, Inc. is also engaged in the businesses of pressure pumping services and drilling and completion fluid services. Additionally, Patterson-UTI has a small exploration and production business that is based in Texas. 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, declines in oil and natural gas prices that could adversely affect demand for the Company's services, and their associated effect on day rates, rig utilization and planned capital expenditures, adverse industry conditions, difficulty in integrating acquisitions, demand for oil and natural gas, 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. Copies of these filings may be obtained by contacting the Company or the SEC. PATTERSON-UTI ENERGY, INC. Condensed Consolidated Statements of Income (Unaudited) (in thousands, except per share data) <Table> <Caption> Three Months Ended Six Months Ended June 30, June 30, 2003 2002 2003 2002 --------- --------- --------- --------- REVENUES $ 195,624 $ 125,363 $ 360,863 $ 253,586 COSTS AND EXPENSES Direct operating costs (excluding depreciation, depletion and amortization) 145,323 97,540 272,217 190,832 Depreciation, depletion and amortization 24,973 23,090 49,109 45,292 Selling, general and administrative 6,813 6,610 13,707 12,953 Bad debt expense 82 30 162 30 Restructuring and other charges -- 4,700 -- 4,700 Other (720) (16) (3,329) (58) --------- --------- --------- --------- Total Costs and Expenses 176,471 131,954 331,866 253,749 --------- --------- --------- --------- OPERATING INCOME (LOSS) 19,153 (6,591) 28,997 (163) --------- --------- --------- --------- OTHER INCOME (EXPENSE) Interest expense (76) (94) (148) (205) Interest income 285 268 545 493 Other 77 8 85 25 --------- --------- --------- --------- Total Other Income 286 182 482 313 --------- --------- --------- --------- INCOME (LOSS) BEFORE INCOME TAXES AND CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE 19,439 (6,409) 29,479 150 INCOME TAXES 7,387 (2,564) 11,202 60 --------- --------- --------- --------- INCOME (LOSS) BEFORE CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE 12,052 (3,845) 18,277 90 CUMULATIVE EFFECT OF CHANGE IN ACCOUNTING PRINCIPLE, net of $287 income tax -- -- (469) -- --------- --------- --------- --------- NET INCOME (LOSS) $ 12,052 $ (3,845) $ 17,808 $ 90 ========= ========= ========= ========= NET INCOME (LOSS) PER COMMON SHARE BASIC: Income (loss) before cumulative effect of change in accounting principle $ 0.15 $ (0.05) $ 0.23 $ 0.00 Cumulative effect of change in accounting principle -- -- (0.01) -- --------- --------- --------- --------- Net Income (loss) $ 0.15 $ (0.05) $ 0.22 $ 0.00 ========= ========= ========= ========= DILUTED: Income (loss) before cumulative effect of change in accounting principle $ 0.15 $ (0.05) $ 0.22 $ 0.00 Cumulative effect of change in accounting principle -- -- -- -- --------- --------- --------- --------- Net Income (loss) $ 0.15 $ (0.05) $ 0.22 $ 0.00 ========= ========= ========= ========= AVERAGE COMMON SHARES OUTSTANDING Basic 80,529 78,742 80,347 78,080 ========= ========= ========= ========= Diluted 82,457 78,742 82,109 80,684 ========= ========= ========= ========= </Table> PATTERSON-UTI ENERGY, INC. Additional Financial and Operating Data (Unaudited) (dollars in thousands) <Table> <Caption> Three Months Ended Six Months Ended June 30, June 30, 2003 2002 2003 2002 --------- --------- --------- --------- EBITDA, excluding income of $2.5 million and a charge of $4.7 million $ 44,126 $ 21,199 $ 75,654 $ 49,829 in 2003 and 2002, respectively Total capital expenditures, excluding acquisitions $ 32,118 $ 19,700 $ 51,651 $ 46,008 Contract Drilling: Revenues $ 163,951 $ 98,461 $ 299,532 $ 200,401 Direct operating costs (excluding depreciation and amortization) $ 124,309 $ 78,323 $ 230,737 $ 151,755 Selling, general and administrative $ 1,094 $ 974 $ 2,229 $ 2,157 Operating days 17,742 10,846 33,611 21,396 Average revenue per operating day $ 9.24 $ 9.08 $ 8.91 $ 9.36 Average direct operating costs per operating day $ 7.01 $ 7.22 $ 6.87 $ 7.09 Average margin per operating day $ 2.23 $ 1.86 $ 2.04 $ 2.27 Number of owned rigs at end of period 340 324 340 324 Average number of rigs owned during period 334 324 331 322 Average rigs operating 195 119 186 118 Rig utilization percentage 58% 37% 56% 37% Capital expenditures $ 27,400 $ 16,599 $ 40,939 $ 38,266 Drilling and Completion Fluids: Revenues $ 16,003 $ 16,189 $ 31,851 $ 32,335 Direct operating costs (excluding depreciation and amortization) $ 13,922 $ 13,849 $ 28,303 $ 28,572 Selling, general and administrative $ 1,771 $ 1,761 $ 3,548 $ 3,488 Total jobs 515 352 1,001 673 Average revenue per job $ 31.07 $ 45.99 $ 31.82 $ 48.05 Average costs per job $ 27.03 $ 39.34 $ 28.27 $ 42.45 Average margin per job $ 4.04 $ 6.65 $ 3.55 $ 5.60 Capital expenditures $ 146 $ 278 $ 277 $ 941 Pressure Pumping: Revenues $ 9,800 $ 6,614 $ 18,311 $ 14,042 Direct operating costs (excluding depreciation) $ 5,800 $ 4,352 $ 10,806 $ 8,509 Selling, general and administrative $ 1,245 $ 980 $ 2,756 $ 2,161 Total jobs 1,246 777 2,307 1,616 Average revenue per job $ 7.87 $ 8.51 $ 7.94 $ 8.69 Average costs per job $ 4.65 $ 5.60 $ 4.68 $ 5.27 Average margin per job $ 3.22 $ 2.91 $ 3.26 $ 3.42 Capital expenditures $ 2,406 $ 1,438 $ 6,119 $ 2,374 Oil and Natural Gas Production and Exploration: Revenues $ 5,870 $ 4,099 $ 11,169 $ 6,808 Direct operating costs (excluding depreciation and depletion) $ 1,292 $ 1,016 $ 2,371 $ 1,996 Selling, general and administrative $ 350 $ 394 $ 732 $ 847 Capital expenditures $ 2,166 $ 1,385 $ 4,316 $ 4,427 Corporate and Other: Selling, general and administrative $ 2,353 $ 2,501 $ 4,442 $ 4,300 Bad debt expense $ 82 $ 30 $ 162 $ 30 Other $ (720) $ 4,684 $ (3,329) $ 4,642 </Table> <Table> <Caption> June 30, June 30, 2003 2002 ---------- ---------- Selected Balance Sheet Data: Cash and cash equivalents $ 87,456 $ 52,869 Current assets $ 265,100 $ 194,592 Total assets $1,005,260 $ 899,844 Current liabilities $ 93,192 $ 64,038 Long-term debt, less current maturities $ -- $ -- Working capital $ 171,908 $ 130,554 </Table>