Bob J. Duplantis - Gordon Arata McCollam Duplantis & Eagan LLC

Bob J. Duplantis

Listed in Best Lawyers since 2008
Phone: 337-237-0132

Bob Duplantis has dedicated his entire career to the oil and gas industry. Prior to joining Gordon Arata in 1982 and establishing its Lafayette office, Bob spent more than a decade serving in-house oil company legal departments including six years as a lobbyist in Baton Rouge, Louisiana.

Bob’s law practice focuses on Louisiana oil and gas regulation and “meat-and- potato” legal issues. He routinely argues contract disputes affecting the oil and gas industry, including lease interpretation and operational issues, joint operating agreements, oil and gas marketing and sales issues, and forced pooling issues. He regularly represents clients before the Louisiana Department of Natural Resources (primarily the Office of Conservation) and the Louisiana Office of Mineral Resources, the former of which he has handled more than a thousand adjudicatory hearings. He frequently addresses industry groups such as the annual Mineral Law Institute.

Prior to practicing law, Bob spent 10 years working in exploration and production in various engineering and management assignments throughout Louisiana, Texas, California, and New York. He earned his J.D. from Loyola in 1966, and his B.S. in Petroleum Chemical Engineering from LSU in 1961.

Published Works & Presentations: 

  • Preferential Rights to Purchase and Consent to Assign Provisions (46th Mineral Law Institute, March 25-26, 1999)
  • The 'Take-or-pay' Controversy: Considerations of the Seller (32nd Mineral Law Institute, March 28-29, 1985)
  • Unanswered Questions after Frey v. Amoco (40th Mineral Law Institute, March 25-26, 1994)

Professional Affiliations:

  • American Bar Association
  • AAPL JOA FORM 610 Revision Committee
  • Mid-Continent Oil and Gas Association
  • Louisiana State Bar Association 
  • Louisiana State Office of Conservation
  • Intrastate Pipelines Ad Hoc Committee 
  • Committee on Revision of Rules of Procedure, La. State Office of Conservation
  • Advisory Committee, La. State Commissioner’s Office of Conservation
  • Lafayette Parish Bar Association

Community Involvement:

  • Stone Energy Corporation - Board of Directors 
  • Holy Cross College, New Orleans – Former Board Member 


  • American Bar Foundation - Fellow
  • Listed in Chambers USA 2012

Office Location

400 East Kaliste Saloom Road, Suite 4200
Lafayette, LA 70508-8517
United States

Lawyer of the Year Awards

2016 Lawyer of the Year in Energy Law of the Lafayette Metro Area2012 Lawyer of the Year in Energy Law of the Baton Rouge Metro Area2011 Lawyer of the Year in Oil and Gas Law of the Baton Rouge Metro Area
Bob J. Duplantis has earned a Lawyer of the Year award for 2016!Bob J. Duplantis has earned a Lawyer of the Year award for 2012!Bob J. Duplantis has earned a Lawyer of the Year award for 2011!

Practice Areas

Energy Law
Oil and Gas Law

Other Information

Gender: Male