EAGLE PASS B4
EAGLE PASS B4 is a Texas oil lease in Upton County, Railroad Commission district 7C, operated by Cog Operating LLC. It has 1 wellbore on file with the Commission. Reported production runs from February 2025 to August 2026, totalling 179,848 barrels. The lease is intermittent. 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 $67.7M, with roughly $15.2M 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 13,607 barrels a month. Its strongest month on the record we hold was January 2026, at 33,109 barrels. In our own backtest, leases producing at this rate are forecast to within about 18% 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 EAGLE PASS B4
- Who operates EAGLE PASS B4?
- EAGLE PASS B4 is operated by Cog Operating LLC, Railroad Commission of Texas operator number 166150.
- Where is EAGLE PASS B4?
- EAGLE PASS B4 is a Texas oil lease in Upton County, Texas, in Railroad Commission district 7C. Its Railroad Commission lease number is 23149.
- Is EAGLE PASS B4 still producing?
- EAGLE PASS B4 is intermittent. The most recent month of production reported to the Railroad Commission of Texas for EAGLE PASS B4 is August 2026.
- How much has EAGLE PASS B4 produced?
- EAGLE PASS B4 has reported 179,848 barrels of oil (bbl) to the Railroad Commission of Texas between February 2025 and August 2026, from 1 wellbore.
- How much is EAGLE PASS B4 worth?
- The remaining production from EAGLE PASS B4 is estimated to be worth about $67.7M in total as of 26 August 2026, within a range of $55.5M to $79.9M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in EAGLE PASS B4 is a fraction of it. The estimate fits an Arps decline curve to the production EAGLE PASS B4 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for EAGLE PASS B4 is an estimate of value, not an offer and not an appraisal.
- How much income does EAGLE PASS B4 generate in a year?
- EAGLE PASS B4 is forecast to net about $15.2M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in EAGLE PASS B4 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 | 23149 |
| Wellbores | 1 |
| Reported production | 179,848 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $67.7M |
Where EAGLE PASS B4 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.