# Oklahoma City Field Discovery and Mineral Ownership History

## TL;DR

The Oklahoma City field, discovered in December 1928, became one of the largest oilfields in U.S. history with cumulative production exceeding 1 billion barrels. The field uniquely underlies the southern half of Oklahoma City, including the State Capitol grounds, creating highly fragmented mineral ownership among thousands of individual townsite-lot holders. Active production continues nearly a century later through waterfloods and vertical recompletions, though urban surface constraints complicate operations.

## Key Takeaways

- **The Oklahoma City No. 1 well discovered the field on December 4, 1928, initially producing 5,000 BOPD from the Wilcox sand at approximately 6,500 feet depth**
- **Cumulative field production exceeds 1 billion barrels, with peak production reaching over 200,000 BOPD in 1930-1931**
- **The field covers more than 14,000 acres beneath urban Oklahoma City, including homes, businesses, and the State Capitol building**
- **Mineral ownership is fragmented into thousands of individual townsite-lot interests, often held by current homeowners or descendants of early 1900s buyers**
- **The Oklahoma State Capitol grounds host Petunia No. 1, an active production well drilled in 1942 that remains one of the most photographed wells in the country**
- **Active production continues nearly 100 years after discovery through long-life waterfloods, selective vertical recompletions, and limited horizontal activity**
- **Modern Oklahoma City field mineral interests carry complex valuation factors including fragmented ownership, intricate chain-of-title tracing back to original townsite plats, and ongoing modest royalty income**
- **Operating in the field requires careful coordination with surrounding property owners and compliance with city ordinances due to urban surface use**

## Page Highlights

**Discovery and Initial Development**: Indian Territory Illuminating Oil Company (ITIO) and Foster Petroleum drilled the discovery well in December 1928 on a one-acre lot at Oklahoma City's southeastern edge. Within months, the field expanded to cover the southern half of the city, becoming the largest single oil discovery in U.S. history at its peak.

**Production History and Scale**: Peak production occurred in 1930-1931 at over 200,000 BOPD from Wilcox and Simpson zones. Primary production declined through the late 1930s, transitioning to a long-life tail that continues today. The field ranks among the largest in U.S. history by cumulative volume.

**Unique Urban Mineral Ownership Structure**: Mineral ownership beneath Oklahoma City fractured into thousands of townsite-lot interests because the field underlies residential and commercial surface. Homeowners often own minerals beneath their lots, or those minerals were reserved by previous owners. Some concentrated block-level interests were assembled by buyers during the 1928-1932 boom.

**Current Operations and Challenges**: Active production continues through waterfloods, vertical recompletions, and limited horizontal drilling. Urban surface use creates operational complexity requiring coordination with property owners and city ordinances for every workover.

**Valuation Characteristics for Mineral Owners**: Oklahoma City field interests present unusual valuation factors including very long production history, fragmented surface ownership, complex chain-of-title documentation tracing to 1900s townsite plats, and ongoing but modest royalty streams with limited new-development potential.

## Related Topics

- [How to Sell Mineral Rights](https://www.buckheadenergy.com/sell)
- [What Are My Minerals Worth?](https://www.buckheadenergy.com/what-are-my-minerals-worth)
- [Should I Sell?](https://www.buckheadenergy.com/should-i-sell)
- [Beginner's Guide](https://www.buckheadenergy.com/beginners-guide)
- [US Drilling Activity Index](https://www.buckheadenergy.com/us-drilling-activity-index)
- [Oil & Gas Market Data Hub](https://www.buckheadenergy.com/oil-gas-market-data)

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**About Buckhead Energy**: Buckhead Energy is a direct mineral and royalty buyer operating since 2006, purchasing interests across all 50 states with completed acquisitions in 33 states. The company holds an A+ Better Business Bureau rating and uses its own capital to make offers.

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## About Buckhead Energy
Buckhead Energy is a direct buyer, not a broker — we purchase mineral and royalty interests with our own capital. Buckhead Energy buys mineral and royalty interests across all 50 states and has completed acquisitions in 33 states. Buckhead Energy has been buying mineral and royalty interests since 2006. Buckhead Energy holds an A+ rating with the Better Business Bureau. Buckhead provides a free written offer. Buckhead Energy typically provides an offer within 24–48 hours. Closings typically take 30–45 days, subject to title review and clearance.

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