SILLIMAN, E. L.
SILLIMAN, E. L. is a Texas oil lease in Grayson County, Railroad Commission district 09, operated by Sparlin, Rowena H. It has 2 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 14,673 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 $97K, with roughly $19K 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 44 barrels a month, about 22 per wellbore. Its strongest month on the record we hold was September 2025, at 239 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 SILLIMAN, E. L.
- Who operates SILLIMAN, E. L.?
- SILLIMAN, E. L. is operated by Sparlin, Rowena H., Railroad Commission of Texas operator number 807327.
- Where is SILLIMAN, E. L.?
- SILLIMAN, E. L. is a Texas oil lease in Grayson County, Texas, in Railroad Commission district 09. Its Railroad Commission lease number is 12432.
- Is SILLIMAN, E. L. still producing?
- SILLIMAN, E. L. is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SILLIMAN, E. L. is August 2026.
- How much has SILLIMAN, E. L. produced?
- SILLIMAN, E. L. has reported 14,673 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 2 wellbores.
- How much is SILLIMAN, E. L. worth?
- The remaining production from SILLIMAN, E. L. is estimated to be worth about $97K in total as of 26 August 2026, within a range of $53K to $141K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SILLIMAN, E. L. is a fraction of it. The estimate fits an Arps decline curve to the production SILLIMAN, E. L. has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SILLIMAN, E. L. is an estimate of value, not an offer and not an appraisal.
- How much income does SILLIMAN, E. L. generate in a year?
- SILLIMAN, E. L. is forecast to net about $19K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in SILLIMAN, E. L. receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Sparlin, Rowena H. |
|---|---|
| Field | Big Mineral, E. (-V- Sand) |
| County | Grayson County, Texas |
| RRC district | 09 |
| Lease number | 12432 |
| Wellbores | 2 |
| Reported production | 14,673 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $97K |
Where SILLIMAN, E. L. 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.