# Denbury Onshore Mississippi EOR Operations

**TL;DR:** Denbury Onshore operates 5 of Mississippi's top 20 producing mature/enhanced oil recovery (EOR) field units, all supplied by Jackson Dome CO2 via the Green Pipeline system. ExxonMobil acquired Denbury Resources in November 2023 and is transitioning branding; Jackson Dome CO2 supply capacity remains the key economic constraint for the portfolio.

## Key Takeaways

- Denbury Onshore is Mississippi's largest mature/EOR operator, managing 5 of the state's top 20 producing units
- All Mississippi positions use CO2 flooding supplied exclusively by the Jackson Dome source via the NEJD CO2 pipeline system
- ExxonMobil acquired Denbury Resources in November 2023; operator-of-record migration to ExxonMobil branding is in progress
- Jackson Dome CO2 supply capacity is the binding economic constraint on the entire Denbury Mississippi EOR portfolio
- Mineral owners typically receive monthly royalty checks calculated on their tract's proportional contribution to unit revenue
- Typical decline rates for Denbury Mississippi mature/EOR fields run 3-8% with reserve life of 15-30+ years on actively maintained units
- Out-of-state ownership is common, with many interests inherited across multiple generations
- Valuations use discounted cash flow incorporating decline rate, remaining reserve life, and operator-quality discount adjustments

## Page Highlights

**Top Producing Fields (January 2026):** Heidelberg East Field Unit in Jasper County leads production at 49,508 bbl, followed by Eucutta East (Wayne County, 36,148 bbl), Heidelberg West (Jasper County, 26,630 bbl), Brookhaven (Lincoln County, 19,107 bbl), and Soso (Jasper County, 3,931 bbl).

**Ownership Considerations:** Mineral owners in Denbury-operated Mississippi units typically hold inherited interests spanning multiple generations. Monthly royalty checks reflect each tract's proportional revenue share. The entire transaction process can be completed remotely for out-of-state owners.

**Valuation Framework:** Standard discounted cash flow methodology applies, incorporating field-specific decline rates, remaining economic life, and operator adjustments. Jackson Dome CO2 supply scenarios factor into valuations where applicable.

**Post-Acquisition Status:** The ExxonMobil acquisition is driving a gradual operator-of-record transition at Mississippi state filings, with at least one ExxonMobil Low Carbon Solutions well already visible in regulatory data.

## Dataset Variables

No JSON-LD Dataset present on this page.

## Related Topics

- [How to Sell Mineral Rights](https://www.buckheadenergy.com/sell)
- [What Are My Minerals Worth?](#) — valuation guide reference
- [Should I Sell?](#) — decision framework reference
- [Beginner's Guide](#) — mineral rights fundamentals reference
- [Getting a Fair Price](#) — valuation transparency reference

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**Ready to sell your Denbury Onshore Mississippi mineral interest?** Get a free written valuation at https://www.buckheadenergy.com/sell