STUMBERG RANCH UNIT E
STUMBERG RANCH UNIT E is a Texas oil lease in Dimmit County, Railroad Commission district 01, operated by Javelin Energy Partners MGMT LLC. It has 3 wellbores on file with the Commission. Reported production runs from April 2025 to August 2026, totalling 744,300 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 $11.3M, with roughly $9.9M 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 56,846 barrels a month, about 18,949 per wellbore. Its strongest month on the record we hold was May 2025, at 96,728 barrels. In our own backtest, leases producing at this rate are forecast to within about 18% 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 STUMBERG RANCH UNIT E
- Who operates STUMBERG RANCH UNIT E?
- STUMBERG RANCH UNIT E is operated by Javelin Energy Partners MGMT LLC, Railroad Commission of Texas operator number 100351.
- Where is STUMBERG RANCH UNIT E?
- STUMBERG RANCH UNIT E is a Texas oil lease in Dimmit County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 21725.
- Is STUMBERG RANCH UNIT E still producing?
- STUMBERG RANCH UNIT E is currently producing. The most recent month of production reported to the Railroad Commission of Texas for STUMBERG RANCH UNIT E is August 2026.
- How much has STUMBERG RANCH UNIT E produced?
- STUMBERG RANCH UNIT E has reported 744,300 barrels of oil (bbl) to the Railroad Commission of Texas between April 2025 and August 2026, from 3 wellbores.
- How much is STUMBERG RANCH UNIT E worth?
- The remaining production from STUMBERG RANCH UNIT E is estimated to be worth about $11.3M in total as of 26 August 2026, within a range of $9.3M to $13.3M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in STUMBERG RANCH UNIT E is a fraction of it. The estimate fits an Arps decline curve to the production STUMBERG RANCH UNIT E has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for STUMBERG RANCH UNIT E is an estimate of value, not an offer and not an appraisal.
- How much income does STUMBERG RANCH UNIT E generate in a year?
- STUMBERG RANCH UNIT E is forecast to net about $9.9M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in STUMBERG RANCH UNIT E receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Javelin Energy Partners MGMT LLC |
|---|---|
| Field | Briscoe Ranch (Eagleford) |
| County | Dimmit County, Texas |
| RRC district | 01 |
| Lease number | 21725 |
| Wellbores | 3 |
| Reported production | 744,300 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $11.3M |
Where STUMBERG RANCH UNIT E 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.