JEFF
JEFF is a Texas oil lease in Pecos County, Railroad Commission district 08, operated by Cardwell Oil Corporation. It has 1 wellbore on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 2,792 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 $3K, with roughly $502 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 barrels a month. Its strongest month on the record we hold was July 2016, at 3 barrels. In our own backtest, leases producing at this rate are forecast to within about 100% 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 JEFF
- Who operates JEFF?
- JEFF is operated by Cardwell Oil Corporation, Railroad Commission of Texas operator number 130852.
- Where is JEFF?
- JEFF is a Texas oil lease in Pecos County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 26843.
- Is JEFF still producing?
- JEFF is intermittent. The most recent month of production reported to the Railroad Commission of Texas for JEFF is August 2026.
- How much has JEFF produced?
- JEFF has reported 2,792 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 1 wellbore.
- How much is JEFF worth?
- The remaining production from JEFF is estimated to be worth about $3K in total as of 26 August 2026, within a range of $0 to $5K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in JEFF is a fraction of it. The estimate fits an Arps decline curve to the production JEFF has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for JEFF is an estimate of value, not an offer and not an appraisal.
- How much income does JEFF generate in a year?
- JEFF is forecast to net about $502 across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in JEFF receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Cardwell Oil Corporation |
|---|---|
| Field | Abell (Clear Fork Upper) |
| County | Pecos County, Texas |
| RRC district | 08 |
| Lease number | 26843 |
| Wellbores | 1 |
| Reported production | 2,792 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $3K |
Where JEFF 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.