Exhibit 5.1
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Gibson, Dunn & Crutcher LLP
811 Main Street Houston, TX 77002-6117
Tel 346.718.6600 www.gibsondunn.com |
September 5, 2023
Patterson-UTI Energy, Inc.
10713 W. Sam Houston Pkwy N, Suite 800
Houston, Texas 77064
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Patterson-UTI Energy, Inc. |
Registration Statement on Form S-3 (File No. 333-274345)
Ladies and Gentlemen:
We have examined the Registration
Statement on Form S-3, File No. 333-274345 (the “Registration Statement”), of Patterson-UTI Energy, Inc., a
Delaware corporation (the “Company”), filed with the Securities and Exchange Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Securities Act”), and the prospectus and prospectus
supplement with respect thereto, each dated September 5, 2023, in connection with the offering by the selling stockholder identified in the prospectus supplement of up to 34,900,000 shares of the Company’s common stock, par value $0.01 per
share (the “Shares”).
In arriving at the opinion expressed below, we have examined originals, or copies certified or otherwise identified to
our satisfaction as being true and complete copies of the originals, of such documents, records, certificates of officers of the Company and of public officials and other instruments as we have deemed necessary or advisable to enable us to render
this opinion. In our examination, we have assumed without independent investigation the genuineness of all signatures, the legal capacity and competency of all natural persons, the authenticity of all documents submitted to us as originals and the
conformity to original documents of all documents submitted to us as copies.
Based on the foregoing and in reliance thereon, and subject to the
assumptions, exceptions, qualifications and limitations set forth herein, we are of the opinion that the Shares are validly issued, fully paid and non-assessable.
We render no opinion herein as to matters involving the laws of any jurisdiction other than the Delaware General Corporation Law (the “DGCL”). We
are not admitted to practice in the State of Delaware; however, we are generally familiar with the DGCL as currently in effect and have made such inquiries as we consider necessary to render the opinion expressed above. This opinion is limited to
the effect of the current state of the DGCL and the facts as they currently exist. We assume no obligation to revise or supplement this opinion in the event of future changes in such laws or the interpretations thereof or such facts.
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