SEFFEL
SEFFEL is a Texas oil lease in Bexar County, Railroad Commission district 01, operated by Seagull Operating Co., Inc. It has 12 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 12,103 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 $39K, with roughly $8K 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 9 barrels a month, about 1 per wellbore. Its strongest month on the record we hold was January 2025, at 43 barrels. In our own backtest, leases producing at this rate are forecast to within about 100% 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 SEFFEL
- Who operates SEFFEL?
- SEFFEL is operated by Seagull Operating Co., Inc., Railroad Commission of Texas operator number 761710.
- Where is SEFFEL?
- SEFFEL is a Texas oil lease in Bexar County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 11215.
- Is SEFFEL still producing?
- SEFFEL is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SEFFEL is August 2026.
- How much has SEFFEL produced?
- SEFFEL has reported 12,103 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 12 wellbores.
- How much is SEFFEL worth?
- The remaining production from SEFFEL is estimated to be worth about $39K in total as of 27 August 2026, within a range of $0 to $78K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SEFFEL is a fraction of it. The estimate fits an Arps decline curve to the production SEFFEL has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SEFFEL is an estimate of value, not an offer and not an appraisal.
- How much income does SEFFEL generate in a year?
- SEFFEL is forecast to net about $8K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SEFFEL receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Seagull Operating Co., Inc. |
|---|---|
| Field | Somerset |
| County | Bexar County, Texas |
| RRC district | 01 |
| Lease number | 11215 |
| Wellbores | 12 |
| Reported production | 12,103 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $39K |
Where SEFFEL 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.