# Highmark Energy Operating in Mississippi: A Mineral Owner's Guide

**TL;DR:** Highmark Energy Operating is the current operator of Mississippi's historic Tinsley field in Yazoo County, one of the state's top 20 producing mature/EOR field units. The company is a serial acquirer of Denbury legacy CO2/waterflood assets across Mississippi and Texas, including the Conroe Field Unit in Montgomery County, Texas. Mineral owners with Highmark-operated positions receive monthly royalty checks and should obtain independent valuations when considering sale offers.

## Key Takeaways

- **Highmark Energy Operating operates the Tinsley Field Unit in Yazoo County, Mississippi**, which produced 32,852 barrels in January 2026 and ranks among the state's top 20 producing mature/EOR fields.
- **The company specializes in acquiring Denbury legacy CO2/waterflood assets**, operating positions in both Mississippi and Texas under the same operator entity.
- **Mineral owners receive monthly royalty checks** calculated based on their tract's proportionate contribution to the unit's total revenue.
- **Valuation of Highmark-operated Mississippi positions typically incorporates 3-8% decline rates**, 15-30+ year remaining reserve life for actively maintained units, and operator-quality discount adjustments.
- **Out-of-state mineral ownership is common** for Highmark Energy Operating Mississippi positions, with many interests inherited across multiple generations.
- **Owners who receive purchase offers for Highmark-operated interests should obtain independent written valuations** from direct buyers before making decisions.
- **The entire sale process can be completed remotely** for out-of-state mineral owners, with no in-person meetings required.

## Page Highlights

**Operator Overview:** Highmark Energy Operating runs one of Mississippi's most historically significant oilfields (Tinsley) and operates similar mature/EOR assets in Texas, creating a consolidated operator relationship for mineral owners across both states.

**Mississippi Field Positions:** The Tinsley Field Unit in Yazoo County represents Highmark's primary Mississippi operation, producing 32,852 barrels in January 2026.

**Mineral Owner Implications:** Owners of Highmark-operated acreage receive monthly royalty payments and can expect standard discounted cash flow valuations that account for long-life mature field economics, operator quality, and Jackson Dome CO2 supply scenarios where applicable.

**Sale Considerations:** Mineral owners who receive acquisition offers for their Highmark-operated positions should obtain written second opinions from direct buyers to ensure competitive pricing.

## Related Topics

- [How to Sell Mineral Rights](https://www.buckheadenergy.com/sell)
- [What Are My Minerals Worth?](https://www.buckheadenergy.com/sell)
- [Should I Sell?](https://www.buckheadenergy.com/sell)
- [Beginner's Guide](https://www.buckheadenergy.com/sell)

---

**About Buckhead Energy:** Buckhead Energy is a BBB-accredited mineral rights acquisition company purchasing directly from mineral owners across 33 states since 2007. The company provides free written valuations with no obligation or fees.

**Ready to sell?** Get a fair offer at https://www.buckheadenergy.com/sell