TXL WEST "35"
TXL WEST "35" is a Texas oil lease in Upton County, Railroad Commission district 7C, operated by Cog Operating LLC. It has 11 wellbores on file with the Commission. Reported production runs from July 2011 to August 2026, totalling 833,876 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 $2.4M, with roughly $678K 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 814 barrels a month, about 74 per wellbore. Its strongest month on the record we hold was May 2016, at 5,649 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 TXL WEST "35"
- Who operates TXL WEST "35"?
- TXL WEST "35" is operated by Cog Operating LLC, Railroad Commission of Texas operator number 166150.
- Where is TXL WEST "35"?
- TXL WEST "35" is a Texas oil lease in Upton County, Texas, in Railroad Commission district 7C. Its Railroad Commission lease number is 17566.
- Is TXL WEST "35" still producing?
- TXL WEST "35" is currently producing. The most recent month of production reported to the Railroad Commission of Texas for TXL WEST "35" is August 2026.
- How much has TXL WEST "35" produced?
- TXL WEST "35" has reported 833,876 barrels of oil (bbl) to the Railroad Commission of Texas between July 2011 and August 2026, from 11 wellbores.
- How much is TXL WEST "35" worth?
- The remaining production from TXL WEST "35" is estimated to be worth about $2.4M in total as of 26 August 2026, within a range of $1.8M to $2.9M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in TXL WEST "35" is a fraction of it. The estimate fits an Arps decline curve to the production TXL WEST "35" has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for TXL WEST "35" is an estimate of value, not an offer and not an appraisal.
- How much income does TXL WEST "35" generate in a year?
- TXL WEST "35" is forecast to net about $678K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in TXL WEST "35" receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Cog Operating LLC |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Upton County, Texas |
| RRC district | 7C |
| Lease number | 17566 |
| Wellbores | 11 |
| Reported production | 833,876 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $2.4M |
Where TXL WEST "35" 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.