Oyster Bayou Field Unit

Oyster Bayou Field Unit is a CO₂-enhanced oil recovery (CO₂-EOR) project in Chambers County, Texas, east of Galveston Bay (roughly ~50 miles east of Houston). The producing reservoir is the Frio Sand (Frio Formation) sandstone in a faulted anticline structural setting, historically produced under gas-cap expansion with a small aquifer and peripheral water injection before tertiary recovery. Denbury (now part of ExxonMobil’s Low Carbon Solutions via the Denbury acquisition) began CO₂ injection around June 2010, developing the unit over a relatively compact footprint (often cited around ~3,912 acres) and operating it as a miscible CO₂ flood with patterns, producers/injectors, and recycle facilities tailored to manage sweep and gravity override typical of Gulf Coast Frio floods.