ROCK, A.J.
ROCK, A.J. is a Texas oil lease in Taylor County, Railroad Commission district 7B, operated by Shamrock Minerals Corporation. It has 1 wellbore on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 44,687 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 $367K, with roughly $70K 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 94 barrels a month. Its strongest month on the record we hold was November 2023, at 173 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 ROCK, A.J.
- Who operates ROCK, A.J.?
- ROCK, A.J. is operated by Shamrock Minerals Corporation, Railroad Commission of Texas operator number 768893.
- Where is ROCK, A.J.?
- ROCK, A.J. is a Texas oil lease in Taylor County, Texas, in Railroad Commission district 7B. Its Railroad Commission lease number is 23404.
- Is ROCK, A.J. still producing?
- ROCK, A.J. is currently producing. The most recent month of production reported to the Railroad Commission of Texas for ROCK, A.J. is August 2026.
- How much has ROCK, A.J. produced?
- ROCK, A.J. has reported 44,687 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 1 wellbore.
- How much is ROCK, A.J. worth?
- The remaining production from ROCK, A.J. is estimated to be worth about $367K in total as of 26 August 2026, within a range of $202K to $533K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in ROCK, A.J. is a fraction of it. The estimate fits an Arps decline curve to the production ROCK, A.J. has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for ROCK, A.J. is an estimate of value, not an offer and not an appraisal.
- How much income does ROCK, A.J. generate in a year?
- ROCK, A.J. is forecast to net about $70K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in ROCK, A.J. receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Shamrock Minerals Corporation |
|---|---|
| Field | Audas-Graham (Capps Lime) |
| County | Taylor County, Texas |
| RRC district | 7B |
| Lease number | 23404 |
| Wellbores | 1 |
| Reported production | 44,687 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $367K |
Where ROCK, A.J. 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.