CAL-MEX
CAL-MEX is a Texas gas lease in Webb County, Railroad Commission district 04, operated by Columbus Energy Corp. It has 1 wellbore on file with the Commission. Reported production runs from May 2001 to August 2026, totalling 2,391,419 thousand cubic feet. 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 $188K, with roughly $31K 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 1,532 thousand cubic feet a month. Its strongest month on the record we hold was October 2018, at 3,950 thousand cubic feet. 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 CAL-MEX
- Who operates CAL-MEX?
- CAL-MEX is operated by Columbus Energy Corp., Railroad Commission of Texas operator number 169309.
- Where is CAL-MEX?
- CAL-MEX is a Texas gas lease in Webb County, Texas, in Railroad Commission district 04. Its Railroad Commission lease number is 185567.
- Is CAL-MEX still producing?
- CAL-MEX is currently producing. The most recent month of production reported to the Railroad Commission of Texas for CAL-MEX is August 2026.
- How much has CAL-MEX produced?
- CAL-MEX has reported 2,391,419 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between May 2001 and August 2026, from 1 wellbore.
- How much is CAL-MEX worth?
- The remaining production from CAL-MEX is estimated to be worth about $188K in total as of 26 August 2026, within a range of $156K to $220K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in CAL-MEX is a fraction of it. The estimate fits an Arps decline curve to the production CAL-MEX has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for CAL-MEX is an estimate of value, not an offer and not an appraisal.
- How much income does CAL-MEX generate in a year?
- CAL-MEX is forecast to net about $31K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in CAL-MEX receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Columbus Energy Corp. |
|---|---|
| Field | Clark Ranch (Lobo) |
| County | Webb County, Texas |
| RRC district | 04 |
| Lease number | 185567 |
| Wellbores | 1 |
| Reported production | 2,391,419 mcf |
| First reported | |
| Last reported | |
| Estimated royalty value | $188K |
Where CAL-MEX 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.