SAN MIGUEL RANCH EF
SAN MIGUEL RANCH EF is a Texas oil lease in Mcmullen County, Railroad Commission district 01, operated by Swift Energy Operating, LLC. It has 21 wellbores on file with the Commission. Reported production runs from April 2011 to August 2026, totalling 3,518,686 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 $11.9M, with roughly $3.2M 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 4,648 barrels a month, about 221 per wellbore. Its strongest month on the record we hold was September 2019, at 69,943 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 SAN MIGUEL RANCH EF
- Who operates SAN MIGUEL RANCH EF?
- SAN MIGUEL RANCH EF is operated by Swift Energy Operating, LLC, Railroad Commission of Texas operator number 833348.
- Where is SAN MIGUEL RANCH EF?
- SAN MIGUEL RANCH EF is a Texas oil lease in Mcmullen County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 15513.
- Is SAN MIGUEL RANCH EF still producing?
- SAN MIGUEL RANCH EF is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SAN MIGUEL RANCH EF is August 2026.
- How much has SAN MIGUEL RANCH EF produced?
- SAN MIGUEL RANCH EF has reported 3,518,686 barrels of oil (bbl) to the Railroad Commission of Texas between April 2011 and August 2026, from 21 wellbores.
- How much is SAN MIGUEL RANCH EF worth?
- The remaining production from SAN MIGUEL RANCH EF is estimated to be worth about $11.9M in total as of 27 August 2026, within a range of $9.9M to $14.0M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SAN MIGUEL RANCH EF is a fraction of it. The estimate fits an Arps decline curve to the production SAN MIGUEL RANCH EF has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SAN MIGUEL RANCH EF is an estimate of value, not an offer and not an appraisal.
- How much income does SAN MIGUEL RANCH EF generate in a year?
- SAN MIGUEL RANCH EF is forecast to net about $3.2M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SAN MIGUEL RANCH EF receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Swift Energy Operating, LLC |
|---|---|
| Field | Eagleville (Eagle Ford-1) |
| County | Mcmullen County, Texas |
| RRC district | 01 |
| Lease number | 15513 |
| Wellbores | 21 |
| Reported production | 3,518,686 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $11.9M |
Where SAN MIGUEL RANCH 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.