Denbury Onshore LLC Martinville EOR Facility - Oil Extraction in Mendenhall, Mississippi

The Denbury Onshore LLC Martinville EOR Facility is an oil extraction plant located at 327 Coho Drive in Mendenhall, Simpson County, Mississippi. It operates within the United States' mature oil-producing region, focusing on enhanced oil recovery (EOR) methods to maximize output from existing reservoirs. The facility is part of Denbury's network of carbon dioxide (CO2) EOR operations, which inject CO2 into oil fields to increase pressure and mobilize trapped crude. As an oil extraction facility, it falls under the regulatory oversight of the U.S. Environmental Protection Agency (EPA) and state-level agencies. Key regulations include the Clean Air Act (CAA) for emissions from extraction activities and the Clean Water Act for produced water management. The facility's NAICS codes (211111 and 211120) indicate crude petroleum and natural gas extraction, typical for EOR operations. In the Gulf Coast region, EOR facilities often utilize CO2 sourced from natural deposits or industrial capture, aligning with carbon management trends. The Martinville EOR Facility contributes to domestic oil production, supporting energy security and local employment in Simpson County. Its use of EOR technology extends the life of oil fields, reducing the need for new drilling and associated surface disturbance. The facility's operational status underscores its role in maintaining production levels in a region with a long history of oil extraction.

The facility is situated in a rural area of Mississippi, where oil extraction activities can impact local water resources and air quality. EOR operations involve injecting CO2 and water, which may pose risks of groundwater contamination if not properly managed. The region's geology and proximity to surface waters require careful monitoring to prevent spills and leaks. Regulatory compliance under the EPA's Underground Injection Control program is critical for protecting drinking water sources.