Patterson-UTI Energy, Inc. announced that it has closed its previously announced private offering of $525 million aggregate principal amount of 3.95% senior notes due 2028. The notes initially are guaranteed on a senior unsecured basis by each of the company's domestic subsidiaries that are guarantors under its credit agreement. The company intends to use the net proceeds to repay amounts outstanding under its credit agreement and for general corporate purposes. The notes have not been registered under the Securities Act of 1933, as amended (the 'Securities Act'), or the securities laws of any other jurisdiction and may not be offered or sold in the United States or to U.S. persons absent registration or an applicable exemption from the registration requirements under the Securities Act and applicable state securities laws or blue sky laws. The notes and the guarantees were offered only to qualified institutional buyers under Rule 144A under the Securities Act and to persons outside the United States under Regulation S under the Securities Act.