GILLUM A
GILLUM A is a Texas oil lease in Stonewall County, Railroad Commission district 7B, operated by Brooks, E. B., JR. It has 17 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 482,723 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 $855K, with roughly $194K 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 327 barrels a month, about 19 per wellbore. Its strongest month on the record we hold was December 2017, at 583 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 GILLUM A
- Who operates GILLUM A?
- GILLUM A is operated by Brooks, E. B., JR., Railroad Commission of Texas operator number 097035.
- Where is GILLUM A?
- GILLUM A is a Texas oil lease in Stonewall County, Texas, in Railroad Commission district 7B. Its Railroad Commission lease number is 25140.
- Is GILLUM A still producing?
- GILLUM A is currently producing. The most recent month of production reported to the Railroad Commission of Texas for GILLUM A is August 2026.
- How much has GILLUM A produced?
- GILLUM A has reported 482,723 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 17 wellbores.
- How much is GILLUM A worth?
- The remaining production from GILLUM A is estimated to be worth about $855K in total as of 27 August 2026, within a range of $667K to $1.0M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in GILLUM A is a fraction of it. The estimate fits an Arps decline curve to the production GILLUM A has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for GILLUM A is an estimate of value, not an offer and not an appraisal.
- How much income does GILLUM A generate in a year?
- GILLUM A is forecast to net about $194K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in GILLUM A receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Brooks, E. B., JR. |
|---|---|
| Field | Mengel, E. (Canyon Sand) |
| County | Stonewall County, Texas |
| RRC district | 7B |
| Lease number | 25140 |
| Wellbores | 17 |
| Reported production | 482,723 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $855K |
Where GILLUM A 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.