ragsdaleTerry D. Ragsdale

Terry D. Ragsdale is a shareholder in the Tulsa office of GableGotwals where he has practiced law since 1992. However, his roots in the energy business date back to the 1980s when he worked for several years as a petroleum engineer. Terry’s practice involves the representation of energy companies — such as oil and gas producers, pipelines, purchasers, and electric and natural gas utilities — in a variety of significant litigation and transactional matters. He has led several energy litigation teams, including complex contract cases and royalty owner class actions.

Terry has served as Chairperson of the Energy Law Section of the Oklahoma Bar Association and President of the Mineral Law Section of the Tulsa County Bar Association. He has received numerous honors including Best Lawyer’s 2014 Tulsa Energy Lawyer of the Year and listings in Chambers USA under “Energy & Natural Resources Law”, Best Lawyers in America under the practice areas of “Commercial Litigation” and “Natural Resources Law,” and the Corporate Counsel Edition of Super Lawyers under the practice area of “Energy & Natural Resources Law in Oklahoma.”

Terry has published numerous articles relating to the energy industry in publications such as the Tulsa Law Journal, the Public Land and Resources Law Digest, and the Newsletter of the Committee on Energy Litigation for the American Bar Association’s Section of Litigation. Terry’s speaking engagements include presentations at the Eugene Kuntz Conference on Natural Resources Law and Policy and Center for American and International Law’s Annual Oil and Gas Law Conference. Terry and Tammy Barrett are co-authors of a chapter in the internationally prestigious Energy Law and Transactions Treatise.

Terry is admitted to practice in the states of Oklahoma and Texas, as well as the United States Circuit Court of Appeals for the Tenth Circuit and the United States District Courts for the Eastern, Northern, and Western Districts of Oklahoma.

Terry is a member of the American, Oklahoma, and Tulsa County Bar Associations. Among his community activities, Terry was a founding director of the Berryhill Education Foundation, and he served as President of the Petroleum Club of Tulsa.

Terry’s recent experience includes:

  • Complex energy litigation matters involving operations in Oklahoma, Colorado, Louisiana, New Mexico, North Dakota, and Texas
  • Obtained summary judgment for a third-party defendant in a class action involving indemnification claims exceeding $100 million and facilitated the assignment of oil and gas properties worth nearly $1 billion pursuant to a mandatory injunction obtained by the Firm.


J.D. magna cum laude, Southern Methodist University, 1992
~ Hatton Sumners Scholar
~ Order of the Coif
~ Editor-in-Chief, SMU Law Review Association

B.S. summa cum laude, Petroleum Engineering, University of Tulsa, 1984


Best Lawyers
Lawyer of the Year – Tulsa
Energy Law – 2014

Antitrust Law
Commercial Litigation
Energy Law

Super Lawyers
Energy & Natural Resources
General Litigation
Class Action/Mass Torts
2007-2008, 2010-2012, 2014-2018

Energy & Natural Resources Ranked Individual


American Bar Association
Christian Legal Society
Oklahoma Bar Association
Texas Bar Association
Tulsa County Bar Association