MAYO
MAYO is a Texas oil lease in San Patricio County, Railroad Commission district 04, operated by Harrigan Operating, LLC. It has 1 wellbore on file with the Commission. Reported production runs from November 2013 to August 2026, totalling 30,644 barrels. The lease is currently producing. Fitting a decline curve to that history and pricing the remaining production at today's forward curve values the whole lease — a 100% undivided interest — at about $250K, with roughly $48K expected over the next twelve months. An individual royalty owner receives their own decimal interest times that figure. Over the last twelve months on file it averaged 52 barrels a month. Its strongest month on the record we hold was January 2019, at 383 barrels. In our own backtest, leases producing at this rate are forecast to within about 45% of what they went on to produce, and that measured error is the range shown on the page rather than a confidence of our own devising.
Key facts about MAYO
- Who operates MAYO?
- MAYO is operated by Harrigan Operating, LLC, Railroad Commission of Texas operator number 359521.
- Where is MAYO?
- MAYO is a Texas oil lease in San Patricio County, Texas, in Railroad Commission district 04. Its Railroad Commission lease number is 13809.
- Is MAYO still producing?
- MAYO is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MAYO is August 2026.
- How much has MAYO produced?
- MAYO has reported 30,644 barrels of oil (bbl) to the Railroad Commission of Texas between November 2013 and August 2026, from 1 wellbore.
- How much is MAYO worth?
- The remaining production from MAYO is estimated to be worth about $250K in total as of 27 August 2026, within a range of $138K to $363K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MAYO is a fraction of it. The estimate fits an Arps decline curve to the production MAYO has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MAYO is an estimate of value, not an offer and not an appraisal.
- How much income does MAYO generate in a year?
- MAYO is forecast to net about $48K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in MAYO receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Harrigan Operating, LLC |
|---|---|
| Field | Taft (4000) |
| County | San Patricio County, Texas |
| RRC district | 04 |
| Lease number | 13809 |
| Wellbores | 1 |
| Reported production | 30,644 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $250K |
Where MAYO sits
Source: Railroad Commission of Texas lease production records, complete through . Figures on this page were computed on .
Production figures are as reported to the Railroad Commission of Texas. The value shown is an estimate produced by fitting a decline curve to that reported history; it is not an offer or an appraisal. How this estimate is calculated.