ZONA, MARY UNIT
ZONA, MARY UNIT is a Texas oil lease in Lee County, Railroad Commission district 03, operated by Union Pacific Resources Company. It has 1 wellbore on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 60,707 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 $101K, with roughly $19K 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 46 barrels a month. Its strongest month on the record we hold was September 2019, at 291 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 ZONA, MARY UNIT
- Who operates ZONA, MARY UNIT?
- ZONA, MARY UNIT is operated by Union Pacific Resources Company, Railroad Commission of Texas operator number 876645.
- Where is ZONA, MARY UNIT?
- ZONA, MARY UNIT is a Texas oil lease in Lee County, Texas, in Railroad Commission district 03. Its Railroad Commission lease number is 12987.
- Is ZONA, MARY UNIT still producing?
- ZONA, MARY UNIT is currently producing. The most recent month of production reported to the Railroad Commission of Texas for ZONA, MARY UNIT is August 2026.
- How much has ZONA, MARY UNIT produced?
- ZONA, MARY UNIT has reported 60,707 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 1 wellbore.
- How much is ZONA, MARY UNIT worth?
- The remaining production from ZONA, MARY UNIT is estimated to be worth about $101K in total as of 26 August 2026, within a range of $56K to $147K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in ZONA, MARY UNIT is a fraction of it. The estimate fits an Arps decline curve to the production ZONA, MARY UNIT has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for ZONA, MARY UNIT is an estimate of value, not an offer and not an appraisal.
- How much income does ZONA, MARY UNIT generate in a year?
- ZONA, MARY UNIT is forecast to net about $19K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in ZONA, MARY UNIT receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Union Pacific Resources Company |
|---|---|
| Field | Giddings (Austin Chalk-3) |
| County | Lee County, Texas |
| RRC district | 03 |
| Lease number | 12987 |
| Wellbores | 1 |
| Reported production | 60,707 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $101K |
Where ZONA, MARY UNIT 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.