Class VI Carbon Sequestration Program


Overview Permits and Applications Public Hearings Applicant Information Primacy


How Carbon Capture and Storage (CCS) Works:


CCS is a three-step process that involves capturing CO2 at the source, compressing it for transport, and injecting it deep underground into rock formations. The first step, capturing the CO2, involves separating CO2 from other gases generated by industrial process facilities including fossil fuel-fired power plants, refineries, steel mills, and chemical plants. The next step, CO2 transport, involves compressing the CO2 for transport via pipelines or other methods to a suitable geologic storage site. Lastly, the remaining step is to store the CO2 deep underground via injecting it into rock formations often at depths of one mile or more.













Modified from Wyoming Department of Environmental Quality


The temperature and pressure conditions at these depths cause CO2 to exist as a supercritical fluid; this supercritical CO2 occupies significantly less volume than gaseous CO2 allowing for increased amounts to be stored underground. The storage of supercritical CO2 into deep underground rock formations is conducted through the use of Class VI injection wells. Class VI wells in Louisiana are currently regulated by the Louisiana Department of Energy and Natural Resource’s Office of Conservation, Injection and Mining Division, Underground Injection Control (UIC) Section. In the context of CCS, the primary purpose of the UIC Section is to administer a regulatory and permitting program to protect underground sources of drinking water from endangerment by the subsurface emplacement of CO2 through deep well injection.















For public information, contact Louisiana Department of Energy and Natural Resources Communications Director, Patrick Courreges, at (225) 454-8223 or Patrick.Courreges@LA.GOV.


For project-related information, contact the Injection and Mining Division at Injection-Mining@LA.GOV