STS SOUTH
STS SOUTH is a Texas gas lease in Mcmullen County, Railroad Commission district 01, operated by Blackbrush O & G, LLC. It has 1 wellbore on file with the Commission. Reported production runs from December 2022 to August 2026, totalling 5,928,257 thousand cubic feet. 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 $6.2M, with roughly $1.3M 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 74,114 thousand cubic feet a month. Its strongest month on the record we hold was March 2023, at 367,008 thousand cubic feet. 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 STS SOUTH
- Who operates STS SOUTH?
- STS SOUTH is operated by Blackbrush O & G, LLC, Railroad Commission of Texas operator number 073059.
- Where is STS SOUTH?
- STS SOUTH is a Texas gas lease in Mcmullen County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 294784.
- Is STS SOUTH still producing?
- STS SOUTH is currently producing. The most recent month of production reported to the Railroad Commission of Texas for STS SOUTH is August 2026.
- How much has STS SOUTH produced?
- STS SOUTH has reported 5,928,257 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between December 2022 and August 2026, from 1 wellbore.
- How much is STS SOUTH worth?
- The remaining production from STS SOUTH is estimated to be worth about $6.2M in total as of 26 August 2026, within a range of $5.1M to $7.3M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in STS SOUTH is a fraction of it. The estimate fits an Arps decline curve to the production STS SOUTH has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for STS SOUTH is an estimate of value, not an offer and not an appraisal.
- How much income does STS SOUTH generate in a year?
- STS SOUTH is forecast to net about $1.3M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in STS SOUTH receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Blackbrush O & G, LLC |
|---|---|
| Field | Hawkville (Eagleford Shale) |
| County | Mcmullen County, Texas |
| RRC district | 01 |
| Lease number | 294784 |
| Wellbores | 1 |
| Reported production | 5,928,257 mcf |
| First reported | |
| Last reported | |
| Estimated royalty value | $6.2M |
Where STS SOUTH 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.