STAR MAHAFFEY
STAR MAHAFFEY is a Texas oil lease in Sterling County, Railroad Commission district 08, operated by Grand Banks Energy Company. It has 3 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 15,554 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 $96K, with roughly $13K 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 3 barrels a month, about 1 per wellbore. Its strongest month on the record we hold was June 2016, at 30 barrels. In our own backtest, leases producing at this rate are forecast to within about 100% 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 STAR MAHAFFEY
- Who operates STAR MAHAFFEY?
- STAR MAHAFFEY is operated by Grand Banks Energy Company, Railroad Commission of Texas operator number 324700.
- Where is STAR MAHAFFEY?
- STAR MAHAFFEY is a Texas oil lease in Sterling County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 29961.
- Is STAR MAHAFFEY still producing?
- STAR MAHAFFEY is currently producing. The most recent month of production reported to the Railroad Commission of Texas for STAR MAHAFFEY is August 2026.
- How much has STAR MAHAFFEY produced?
- STAR MAHAFFEY has reported 15,554 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 3 wellbores.
- How much is STAR MAHAFFEY worth?
- The remaining production from STAR MAHAFFEY is estimated to be worth about $96K in total as of 27 August 2026, within a range of $0 to $192K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in STAR MAHAFFEY is a fraction of it. The estimate fits an Arps decline curve to the production STAR MAHAFFEY has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for STAR MAHAFFEY is an estimate of value, not an offer and not an appraisal.
- How much income does STAR MAHAFFEY generate in a year?
- STAR MAHAFFEY is forecast to net about $13K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in STAR MAHAFFEY receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Grand Banks Energy Company |
|---|---|
| Field | Conger (Penn) |
| County | Sterling County, Texas |
| RRC district | 08 |
| Lease number | 29961 |
| Wellbores | 3 |
| Reported production | 15,554 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $96K |
Where STAR MAHAFFEY 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.