SAN MARCOS UNIT
SAN MARCOS UNIT is a Texas oil lease in Atascosa County, Railroad Commission district 01, operated by Cabot Oil & Gas Corporation. It has 2 wellbores on file with the Commission. Reported production runs from March 2015 to August 2026, totalling 210,098 barrels. The lease is intermittent. 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 $522K, with roughly $100K 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 96 barrels a month, about 48 per wellbore. Its strongest month on the record we hold was May 2016, at 3,510 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 SAN MARCOS UNIT
- Who operates SAN MARCOS UNIT?
- SAN MARCOS UNIT is operated by Cabot Oil & Gas Corporation, Railroad Commission of Texas operator number 121700.
- Where is SAN MARCOS UNIT?
- SAN MARCOS UNIT is a Texas oil lease in Atascosa County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 18430.
- Is SAN MARCOS UNIT still producing?
- SAN MARCOS UNIT is intermittent. The most recent month of production reported to the Railroad Commission of Texas for SAN MARCOS UNIT is August 2026.
- How much has SAN MARCOS UNIT produced?
- SAN MARCOS UNIT has reported 210,098 barrels of oil (bbl) to the Railroad Commission of Texas between March 2015 and August 2026, from 2 wellbores.
- How much is SAN MARCOS UNIT worth?
- The remaining production from SAN MARCOS UNIT is estimated to be worth about $522K in total as of 27 August 2026, within a range of $287K to $758K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SAN MARCOS UNIT is a fraction of it. The estimate fits an Arps decline curve to the production SAN MARCOS UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SAN MARCOS UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does SAN MARCOS UNIT generate in a year?
- SAN MARCOS UNIT is forecast to net about $100K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SAN MARCOS UNIT receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Cabot Oil & Gas Corporation |
|---|---|
| Field | Briscoe Ranch (Eagleford) |
| County | Atascosa County, Texas |
| RRC district | 01 |
| Lease number | 18430 |
| Wellbores | 2 |
| Reported production | 210,098 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $522K |
Where SAN MARCOS UNIT 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.