Partner
Tel: (210) 225-4031
Fax: (210) 222-0586
cb@ddb-law.com

Calhoun was born in San Antonio, Texas, November 23, 1950. Calhoun’s practice concentrates in the field of oil, gas and mineral law, a field in which he has practiced since joining the firm in 1976. He has been board certified in this subject since 1989. He has wide experience in representing mineral owners and oil and gas exploration and production companies in oil and gas transactions, leases, contracts, and title matters, as well as in oil and gas related trials and appeals. Your San Antonio oil gas and mineral lawyer.

Board Certified

Oil, Gas and Mineral Law

Admitted

  • State of Texas
  • U.S. District Court, Southern District of Texas
  • U.S. District Court, Western District of Texas
  • U.S. Court of Appeals, Fifth Circuit
  • U.S. Supreme Court

Member

  • State Bar of Texas
  • San Antonio Bar Association
  • Fellow, Texas Bar Foundation

Education

  • University of Texas at Austin, J.D., 1976, Texas Law Review, 1975-76
  • University of Texas at Austin, B.A. with honors, 1973

Publications

“Termination of Oil & Gas Leases: Including NGPL v. Pool and Covering of Affirmative Defenses, Savings Clause, and Adverse Possession” – University of Texas School of Law Oil, Gas and Mineral Law Institute, March 21, 2003, Houston, Texas

“How to Mitigate the Results: Natural Gas Pipeline of America vs. Pool and Other Contentious Issues” – State Bar of Texas 23rd Annual Advanced Oil, Gas and Energy Resources Law Course, September 15-16, 2005, Houston, Texas

“Flaring and Gas Use in Operations” – State Bar of Texas Advanced Oil, Gas and Energy Resources Law Course, October 3-4, 2013, Houston, Texas

Of Counsel

Carl M. Barto, Laredo, Texas