MCWILLIAMS-SOT-SARTAIN EF
MCWILLIAMS-SOT-SARTAIN EF is a Texas oil lease in Frio County, Railroad Commission district 01, operated by Virtex Operating Company, Inc. It has 1 wellbore on file with the Commission. Reported production runs from April 2019 to August 2026, totalling 109,488 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 $1.6M, with roughly $392K 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 497 barrels a month. Its strongest month on the record we hold was August 2019, at 8,672 barrels. In our own backtest, leases producing at this rate are forecast to within about 22% 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 MCWILLIAMS-SOT-SARTAIN EF
- Who operates MCWILLIAMS-SOT-SARTAIN EF?
- MCWILLIAMS-SOT-SARTAIN EF is operated by Virtex Operating Company, Inc., Railroad Commission of Texas operator number 886261.
- Where is MCWILLIAMS-SOT-SARTAIN EF?
- MCWILLIAMS-SOT-SARTAIN EF is a Texas oil lease in Frio County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 19731.
- Is MCWILLIAMS-SOT-SARTAIN EF still producing?
- MCWILLIAMS-SOT-SARTAIN EF is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MCWILLIAMS-SOT-SARTAIN EF is August 2026.
- How much has MCWILLIAMS-SOT-SARTAIN EF produced?
- MCWILLIAMS-SOT-SARTAIN EF has reported 109,488 barrels of oil (bbl) to the Railroad Commission of Texas between April 2019 and August 2026, from 1 wellbore.
- How much is MCWILLIAMS-SOT-SARTAIN EF worth?
- The remaining production from MCWILLIAMS-SOT-SARTAIN EF is estimated to be worth about $1.6M in total as of 27 August 2026, within a range of $1.3M to $2.0M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MCWILLIAMS-SOT-SARTAIN EF is a fraction of it. The estimate fits an Arps decline curve to the production MCWILLIAMS-SOT-SARTAIN EF has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MCWILLIAMS-SOT-SARTAIN EF is an estimate of value, not an offer and not an appraisal.
- How much income does MCWILLIAMS-SOT-SARTAIN EF generate in a year?
- MCWILLIAMS-SOT-SARTAIN EF is forecast to net about $392K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in MCWILLIAMS-SOT-SARTAIN EF receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Virtex Operating Company, Inc. |
|---|---|
| Field | Briscoe Ranch (Eagleford) |
| County | Frio County, Texas |
| RRC district | 01 |
| Lease number | 19731 |
| Wellbores | 1 |
| Reported production | 109,488 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $1.6M |
Where MCWILLIAMS-SOT-SARTAIN EF 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.