# Loudon Field Mineral Rights in Fayette County, Illinois

**TL;DR:** The Loudon Field in Fayette County, Illinois is one of the state's largest cumulative oil producers with over 400 million barrels from deep Aux Vases Sandstone and McClosky Limestone reservoirs maintained through continuous waterflood operations. Many mineral interests date to early-1900s leases and have been inherited across multiple generations, creating complex ownership structures common throughout the Illinois Basin's mature producing fields.

## Key Takeaways

- **Loudon Field ranks among Illinois's top cumulative producers** with over 400 million barrels of oil extracted from Mississippian-age reservoirs in the Illinois Basin.
- **Production comes from deep Aux Vases Sandstone and McClosky Limestone** maintained through continuous waterflood operations managed by multiple long-tenured private operators.
- **Mineral interests typically span multiple generations** with many original leases dating to the early 1900s, resulting in heirs spread across multiple states.
- **Royalty cash flows follow the Illinois Basin's characteristic long-tail profile** — small monthly checks sustained over decades from mature waterflood operations with 3-7% annual decline rates.
- **Valuation drivers include 15-30+ year remaining reserve life**, operator quality, and potential CCS/45Q optionality where Mt. Simon Sandstone underlies producing zones.
- **Indiana's 20-year Dormant Mineral Act creates urgency** for absentee mineral owners on cross-border Illinois Basin fields.
- **Remote transactions are standard** for out-of-state owners selling Illinois Basin interests, with the entire process handled via email, notary, and county recording.

## Page Highlights

**Field Overview:** The Loudon Field operates in Fayette County within the Illinois Basin, utilizing continuous waterflood mechanisms to extract oil from deep reservoirs. Multiple private operators manage production from one of Illinois's largest cumulative oil fields.

**Illinois Basin Context:** The field sits within North America's longest-producing oil and gas regions, with continuous commercial production since the late 1800s. The basin is characterized by mature waterflood operations delivering predictable, long-duration cash flows.

**Producing Formations:** Production comes from Mississippian-age reservoirs including deep Aux Vases Sandstone and McClosky Limestone. The field's geology represents typical Illinois Basin stratigraphy with multiple stacked pay zones.

**Mineral Interest Types:** Ownership structures include producing royalty interests, non-producing mineral interests, overriding royalty interests (ORRI), and non-participating royalty interests (NPRI). Multi-generational inheritance creates complex title chains requiring professional handling.

**Valuation Framework:** Direct buyers apply discounted cash flow analysis using 3-7% decline rates, 15-30+ year reserve life, 9-13% discount rates for stable waterflood cash flows, and consideration of CCS sequestration potential in select areas near the Wabash Valley Resources hub.

**Sales Process:** Buckhead Energy handles remote transactions for out-of-state owners through written offers, notarized deeds, Fayette County recording, and same-day wire transfers upon recording completion.

**Top Illinois Basin Fields:** The page lists nine other major Illinois Basin producing fields including Clay City Consolidated, Salem Consolidated, New Harmony Consolidated, Mt. Carmel, Lawrence (historical CO2 pilot), Main Consolidated (Marathon steam project), Bridgeport, Olney Consolidated, and Westfield.

## Related Topics

- [Illinois Basin — The Definitive 2026 Guide](https://www.buckheadenergy.com/illinois-basin)
- [Aux Vases Sandstone](https://www.buckheadenergy.com/aux-vases-sandstone) formation page
- [Cypress Sandstone](https://www.buckheadenergy.com/cypress-sandstone) formation page
- [McClosky Limestone](https://www.buckheadenergy.com/mcclosky-limestone) formation page
- [Salem Limestone](https://www.buckheadenergy.com/salem-limestone) formation page
- [Tar Springs Sandstone](https://www.buckheadenergy.com/tar-springs-sandstone) formation page
- [How to Sell Mineral Rights](https://www.buckheadenergy.com/how-to-sell-mineral-rights)
- [What Are My Minerals Worth?](https://www.buckheadenergy.com/what-are-minerals-worth)

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**About Buckhead Energy**  
Buckhead Energy is a BBB-accredited mineral rights acquisition company that has purchased mineral and royalty interests with its own capital since 2007, serving mineral owners across 33 states.

**Ready to sell your Loudon Field mineral rights?** [Get your free valuation at Buckhead Energy](https://www.buckheadenergy.com/sell)