COX
COX is a Texas oil lease in Martin County, Railroad Commission district 08, operated by Piedra Operating, LLC. It has 1 wellbore on file with the Commission. Reported production runs from August 2012 to August 2026, totalling 40,197 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 $2K, with roughly $377 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 0 barrels a month. Its strongest month on the record we hold was May 2016, at 539 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 COX
- Who operates COX?
- COX is operated by Piedra Operating, LLC, Railroad Commission of Texas operator number 664930.
- Where is COX?
- COX is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 43078.
- Is COX still producing?
- COX is intermittent. The most recent month of production reported to the Railroad Commission of Texas for COX is August 2026.
- How much has COX produced?
- COX has reported 40,197 barrels of oil (bbl) to the Railroad Commission of Texas between August 2012 and August 2026, from 1 wellbore.
- How much is COX worth?
- The remaining production from COX is estimated to be worth about $2K in total as of 26 August 2026, within a range of $0 to $4K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in COX is a fraction of it. The estimate fits an Arps decline curve to the production COX has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for COX is an estimate of value, not an offer and not an appraisal.
- How much income does COX generate in a year?
- COX is forecast to net about $377 across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in COX receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Piedra Operating, LLC |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Martin County, Texas |
| RRC district | 08 |
| Lease number | 43078 |
| Wellbores | 1 |
| Reported production | 40,197 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $2K |
Where COX 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.