EOG Resources has been experimenting with enhanced oil recovery (EOR) techniques that may be good news for Texas mineral and royalty owners. Specifically, EOG has been using injections of natural gas to increase oil production on approximately 15 wells. They report that the new technique can result in producing 30% to 70% more oil from the Eagle Ford shale, at an additional cost of about $6 per barrel of oil.
EOG cautions that the technique may not be suitable for all wells in all reservoirs, however the early results from the EOG wells have resulted in attempts by scientists and other oil companies to study and duplicate the EOG results. For example, David Schechter, a petroleum engineering professor at Texas A&M University, has altered his lab that has been used to test carbon dioxide (CO2) for EOR to safely observe how natural gas affects reservoir rock. BHP Billiton and its partner Devon Energy have two EOR pilot projects in the Eagle Ford. Marathon Oil and Core Laboratories are also reportedly beginning pilot projects.