CALK, E. W.
CALK, E. W. is a Texas oil lease in Bexar County, Railroad Commission district 01, operated by Calk, J. M. Operating Co. It has 17 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 33,682 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 $242K, with roughly $46K 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 51 barrels a month, about 3 per wellbore. Its strongest month on the record we hold was September 2017, at 212 barrels. In our own backtest, leases producing at this rate are forecast to within about 45% 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 CALK, E. W.
- Who operates CALK, E. W.?
- CALK, E. W. is operated by Calk, J. M. Operating Co., Railroad Commission of Texas operator number 123874.
- Where is CALK, E. W.?
- CALK, E. W. is a Texas oil lease in Bexar County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 10893.
- Is CALK, E. W. still producing?
- CALK, E. W. is currently producing. The most recent month of production reported to the Railroad Commission of Texas for CALK, E. W. is August 2026.
- How much has CALK, E. W. produced?
- CALK, E. W. has reported 33,682 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 17 wellbores.
- How much is CALK, E. W. worth?
- The remaining production from CALK, E. W. is estimated to be worth about $242K in total as of 26 August 2026, within a range of $133K to $350K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in CALK, E. W. is a fraction of it. The estimate fits an Arps decline curve to the production CALK, E. W. has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for CALK, E. W. is an estimate of value, not an offer and not an appraisal.
- How much income does CALK, E. W. generate in a year?
- CALK, E. W. is forecast to net about $46K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in CALK, E. W. receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Calk, J. M. Operating Co. |
|---|---|
| Field | Somerset |
| County | Bexar County, Texas |
| RRC district | 01 |
| Lease number | 10893 |
| Wellbores | 17 |
| Reported production | 33,682 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $242K |
Where CALK, E. W. 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.