SWAIN, W. F. 36
SWAIN, W. F. 36 is a Texas oil lease in Van Zandt County, Railroad Commission district 05, operated by Union Oil Company Of California. It has 7 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 256,945 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 $1.8M, with roughly $399K 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 550 barrels a month, about 79 per wellbore. Its strongest month on the record we hold was June 2025, at 649 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 SWAIN, W. F. 36
- Who operates SWAIN, W. F. 36?
- SWAIN, W. F. 36 is operated by Union Oil Company Of California, Railroad Commission of Texas operator number 876520.
- Where is SWAIN, W. F. 36?
- SWAIN, W. F. 36 is a Texas oil lease in Van Zandt County, Texas, in Railroad Commission district 05. Its Railroad Commission lease number is 03168.
- Is SWAIN, W. F. 36 still producing?
- SWAIN, W. F. 36 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SWAIN, W. F. 36 is August 2026.
- How much has SWAIN, W. F. 36 produced?
- SWAIN, W. F. 36 has reported 256,945 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 7 wellbores.
- How much is SWAIN, W. F. 36 worth?
- The remaining production from SWAIN, W. F. 36 is estimated to be worth about $1.8M in total as of 27 August 2026, within a range of $1.4M to $2.2M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SWAIN, W. F. 36 is a fraction of it. The estimate fits an Arps decline curve to the production SWAIN, W. F. 36 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SWAIN, W. F. 36 is an estimate of value, not an offer and not an appraisal.
- How much income does SWAIN, W. F. 36 generate in a year?
- SWAIN, W. F. 36 is forecast to net about $399K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SWAIN, W. F. 36 receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Union Oil Company Of California |
|---|---|
| Field | Van (Austin Chalk) |
| County | Van Zandt County, Texas |
| RRC district | 05 |
| Lease number | 03168 |
| Wellbores | 7 |
| Reported production | 256,945 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $1.8M |
Where SWAIN, W. F. 36 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.