WILEY "4"
WILEY "4" is a Texas oil lease in Martin County, Railroad Commission district 08, operated by Endeavor Energy Resources L.P. It has 2 wellbores on file with the Commission. Reported production runs from January 2010 to August 2026, totalling 136,606 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 $732K, with roughly $125K 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 101 barrels a month, about 51 per wellbore. Its strongest month on the record we hold was July 2022, at 861 barrels. In our own backtest, leases producing at this rate are forecast to within about 22% 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 WILEY "4"
- Who operates WILEY "4"?
- WILEY "4" is operated by Endeavor Energy Resources L.P., Railroad Commission of Texas operator number 251726.
- Where is WILEY "4"?
- WILEY "4" is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 40285.
- Is WILEY "4" still producing?
- WILEY "4" is currently producing. The most recent month of production reported to the Railroad Commission of Texas for WILEY "4" is August 2026.
- How much has WILEY "4" produced?
- WILEY "4" has reported 136,606 barrels of oil (bbl) to the Railroad Commission of Texas between January 2010 and August 2026, from 2 wellbores.
- How much is WILEY "4" worth?
- The remaining production from WILEY "4" is estimated to be worth about $732K in total as of 26 August 2026, within a range of $571K to $893K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in WILEY "4" is a fraction of it. The estimate fits an Arps decline curve to the production WILEY "4" has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for WILEY "4" is an estimate of value, not an offer and not an appraisal.
- How much income does WILEY "4" generate in a year?
- WILEY "4" is forecast to net about $125K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in WILEY "4" receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Endeavor Energy Resources L.P. |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Martin County, Texas |
| RRC district | 08 |
| Lease number | 40285 |
| Wellbores | 2 |
| Reported production | 136,606 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $732K |
Where WILEY "4" 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.