Refugio

The Refugio Carbon Storage Project, led by ConocoPhillips Texas Gulf Coast CCS LLC, is a large-scale carbon capture and storage (CCS) development located in Refugio and Aransas Counties, Texas. The project is designed to support the production of blue hydrogen and ammonia by capturing CO₂ from the facility, treating and compressing it, and transporting it through a dedicated pipeline to underground geologic formations for permanent storage. ConocoPhillips has applied for permits to drill and operate six Class VI injection wells (Snapper North INJ 1–3 and Snapper South INJ 1–3) specifically for this purpose. These wells are engineered to meet stringent API and EPA regulatory requirements for CO₂ sequestration. The storage formations identified for injection include the Miocene Oakville Sandstone and the Oligocene Greta and Frio sands, which are thick, porous, and laterally extensive reservoirs ideally suited for CO₂ storage. These injection zones are underlain by saline aquifers and sealed by the Anahuac Shale, a thick regional marine shale considered an excellent top seal to prevent upward migration. The project team is carrying out a comprehensive site characterization program, including seismic, reservoir modeling, and geologic appraisal, to validate injectivity, capacity, and containment assumptions. With multiple wells, robust sealing formations, and a high-volume saline aquifer system, the Refugio project is positioned to provide long-term, large-scale carbon storage capacity for ConocoPhillips’ low-carbon energy initiatives.