Delhi

The Delhi CO₂-EOR project is a large-scale tertiary oil recovery development located in Richland Parish, northeastern Louisiana, targeting mature sandstone reservoirs within the historic Delhi Field. Originally discovered in the 1940s, the field produced primarily from Tuscaloosa and Paluxy age sandstones under structural and stratigraphic trapping associated with a faulted anticline. After extensive depletion through primary production and waterflooding, Denbury Resources redeveloped the field using miscible CO₂ injection beginning in the late 2000s (first injection around 2009–2010), supplied via the company’s Green Pipeline network. The project involves large-pattern CO₂ flooding using water-alternating-gas (WAG) techniques to mobilize residual oil and improve sweep efficiency across stacked fluvial-deltaic sandstone reservoirs. Delhi became one of the largest anthropogenic CO₂-EOR projects in the Gulf Coast region, integrating captured industrial CO₂ sources with enhanced recovery while providing substantial long-term geologic storage.