Bowie

The SPG CO₂ Bowie Facility is an acid gas injection (AGI) carbon storage project operating under an EPA Subpart RR monitoring, reporting, and verification (MRV) plan for permanent geologic sequestration. SPG is authorized to inject up to 12 million standard cubic feet per day (MMSCFD) of acid gas waste composed primarily of CO₂, N₂, H₂S, and trace hydrocarbons through the Hinkle Trust #1 injection well. The injected stream originates from four natural gas amine treatment facilities in Montague County, Texas, operated by EOG Resources, processing Barnett Shale production from approximately 1,100 wells across the Newark East Field. Aggregate reportable greenhouse gas emissions from the four amine separation facilities were approximately 180,000 metric tons CO₂e in 2022. Produced gas is gathered at four compressor stations (Saint Jo, Henderson, Bowie South, Bowie East), compressed from approximately 25–35 psig to 750–900 psig, and treated using MDEA/piperazine amine systems to reduce CO₂ from approximately 8–15% to ~4%, followed by TEG dehydration (~7 lbs/MMscf). Final processing at the Kripple Kreek Gas Processing Plant removes CO₂ to approximately 100–200 ppm and dehydrates gas to a −300°F dewpoint before residue gas and NGL separation. Captured CO₂ is transported via pipeline to the injection site. The primary injection target is the Middle Ellenburger Formation, an approximately 1,000-foot thick dolomitic karst reservoir. Overlying confining units include the Upper Ellenburger carbonates, Simpson Formation shale and limestone, and Viola Formation limestone, which provide the upper sealing system. Below the injection interval lies approximately 1,000 feet of tight limestone acting as a lower confining zone above the granitic basement.