CALLAHAN
CALLAHAN is a Texas oil lease in Martin County, Railroad Commission district 08, operated by SM Energy Company. It has 9 wellbores on file with the Commission. Reported production runs from October 2020 to August 2026, totalling 1,575,968 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 $60.2M, with roughly $42.7M 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 77,229 barrels a month, about 8,581 per wellbore. Its strongest month on the record we hold was November 2025, at 203,658 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 CALLAHAN
- Who operates CALLAHAN?
- CALLAHAN is operated by SM Energy Company, Railroad Commission of Texas operator number 788997.
- Where is CALLAHAN?
- CALLAHAN is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 55372.
- Is CALLAHAN still producing?
- CALLAHAN is currently producing. The most recent month of production reported to the Railroad Commission of Texas for CALLAHAN is August 2026.
- How much has CALLAHAN produced?
- CALLAHAN has reported 1,575,968 barrels of oil (bbl) to the Railroad Commission of Texas between October 2020 and August 2026, from 9 wellbores.
- How much is CALLAHAN worth?
- The remaining production from CALLAHAN is estimated to be worth about $60.2M in total as of 26 August 2026, within a range of $49.4M to $71.1M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in CALLAHAN is a fraction of it. The estimate fits an Arps decline curve to the production CALLAHAN has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for CALLAHAN is an estimate of value, not an offer and not an appraisal.
- How much income does CALLAHAN generate in a year?
- CALLAHAN is forecast to net about $42.7M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in CALLAHAN receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | SM Energy Company |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Martin County, Texas |
| RRC district | 08 |
| Lease number | 55372 |
| Wellbores | 9 |
| Reported production | 1,575,968 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $60.2M |
Where CALLAHAN 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.