SHERMINATOR 12-13 A
SHERMINATOR 12-13 A is a Texas oil lease in Glasscock County, Railroad Commission district 08, operated by Black Swan Opco, LLC. It has 2 wellbores on file with the Commission. Reported production runs from October 2024 to August 2026, totalling 255,256 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 $9.9M, with roughly $3.7M 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 7,984 barrels a month, about 3,992 per wellbore. Its strongest month on the record we hold was November 2024, at 39,973 barrels. In our own backtest, leases producing at this rate are forecast to within about 17% 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 SHERMINATOR 12-13 A
- Who operates SHERMINATOR 12-13 A?
- SHERMINATOR 12-13 A is operated by Black Swan Opco, LLC, Railroad Commission of Texas operator number 101935.
- Where is SHERMINATOR 12-13 A?
- SHERMINATOR 12-13 A is a Texas oil lease in Glasscock County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 62439.
- Is SHERMINATOR 12-13 A still producing?
- SHERMINATOR 12-13 A is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SHERMINATOR 12-13 A is August 2026.
- How much has SHERMINATOR 12-13 A produced?
- SHERMINATOR 12-13 A has reported 255,256 barrels of oil (bbl) to the Railroad Commission of Texas between October 2024 and August 2026, from 2 wellbores.
- How much is SHERMINATOR 12-13 A worth?
- The remaining production from SHERMINATOR 12-13 A is estimated to be worth about $9.9M in total as of 27 August 2026, within a range of $8.2M to $11.6M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SHERMINATOR 12-13 A is a fraction of it. The estimate fits an Arps decline curve to the production SHERMINATOR 12-13 A has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SHERMINATOR 12-13 A is an estimate of value, not an offer and not an appraisal.
- How much income does SHERMINATOR 12-13 A generate in a year?
- SHERMINATOR 12-13 A is forecast to net about $3.7M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SHERMINATOR 12-13 A receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Black Swan Opco, LLC |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Glasscock County, Texas |
| RRC district | 08 |
| Lease number | 62439 |
| Wellbores | 2 |
| Reported production | 255,256 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $9.9M |
Where SHERMINATOR 12-13 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.