MAMMOTH B
MAMMOTH B is a Texas oil lease in Brazos County, Railroad Commission district 05, operated by Wildfire Energy Operating LLC. It has 2 wellbores on file with the Commission. Reported production runs from March 2022 to August 2026, totalling 536,602 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 $11.0M, with roughly $3.2M 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 5,197 barrels a month, about 2,598 per wellbore. Its strongest month on the record we hold was August 2022, at 42,372 barrels. In our own backtest, leases producing at this rate are forecast to within about 17% 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 MAMMOTH B
- Who operates MAMMOTH B?
- MAMMOTH B is operated by Wildfire Energy Operating LLC, Railroad Commission of Texas operator number 923444.
- Where is MAMMOTH B?
- MAMMOTH B is a Texas oil lease in Brazos County, Texas, in Railroad Commission district 05. Its Railroad Commission lease number is 04442.
- Is MAMMOTH B still producing?
- MAMMOTH B is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MAMMOTH B is August 2026.
- How much has MAMMOTH B produced?
- MAMMOTH B has reported 536,602 barrels of oil (bbl) to the Railroad Commission of Texas between March 2022 and August 2026, from 2 wellbores.
- How much is MAMMOTH B worth?
- The remaining production from MAMMOTH B is estimated to be worth about $11.0M in total as of 26 August 2026, within a range of $9.1M to $12.9M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MAMMOTH B is a fraction of it. The estimate fits an Arps decline curve to the production MAMMOTH B has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MAMMOTH B is an estimate of value, not an offer and not an appraisal.
- How much income does MAMMOTH B generate in a year?
- MAMMOTH B is forecast to net about $3.2M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in MAMMOTH B receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Wildfire Energy Operating LLC |
|---|---|
| Field | Aguila Vado (Eagleford) |
| County | Brazos County, Texas |
| RRC district | 05 |
| Lease number | 04442 |
| Wellbores | 2 |
| Reported production | 536,602 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $11.0M |
Where MAMMOTH B 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.