MCKASKLE "A"
MCKASKLE "A" is a Texas oil lease in Martin County, Railroad Commission district 08, operated by JM Cox Resources, L.P. It has 3 wellbores on file with the Commission. Reported production runs from October 2009 to August 2026, totalling 230,088 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 $6.2M, with roughly $1.3M 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 1,809 barrels a month, about 603 per wellbore. Its strongest month on the record we hold was November 2025, at 4,360 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 MCKASKLE "A"
- Who operates MCKASKLE "A"?
- MCKASKLE "A" is operated by JM Cox Resources, L.P., Railroad Commission of Texas operator number 433075.
- Where is MCKASKLE "A"?
- MCKASKLE "A" is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 39818.
- Is MCKASKLE "A" still producing?
- MCKASKLE "A" is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MCKASKLE "A" is August 2026.
- How much has MCKASKLE "A" produced?
- MCKASKLE "A" has reported 230,088 barrels of oil (bbl) to the Railroad Commission of Texas between October 2009 and August 2026, from 3 wellbores.
- How much is MCKASKLE "A" worth?
- The remaining production from MCKASKLE "A" is estimated to be worth about $6.2M in total as of 26 August 2026, within a range of $5.1M to $7.2M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MCKASKLE "A" is a fraction of it. The estimate fits an Arps decline curve to the production MCKASKLE "A" has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MCKASKLE "A" is an estimate of value, not an offer and not an appraisal.
- How much income does MCKASKLE "A" generate in a year?
- MCKASKLE "A" is forecast to net about $1.3M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in MCKASKLE "A" receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | JM Cox Resources, L.P. |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Martin County, Texas |
| RRC district | 08 |
| Lease number | 39818 |
| Wellbores | 3 |
| Reported production | 230,088 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $6.2M |
Where MCKASKLE "A" 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.