HARTFIELD, MILLIE
HARTFIELD, MILLIE is a Texas oil lease in Guadalupe County, Railroad Commission district 01, operated by Donoco Oil Company. It has 2 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 405 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 1 barrels a month. Its strongest month on the record we hold was August 2016, at 21 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 HARTFIELD, MILLIE
- Who operates HARTFIELD, MILLIE?
- HARTFIELD, MILLIE is operated by Donoco Oil Company, Railroad Commission of Texas operator number 222733.
- Where is HARTFIELD, MILLIE?
- HARTFIELD, MILLIE is a Texas oil lease in Guadalupe County, Texas, in Railroad Commission district 01. Its Railroad Commission lease number is 00838.
- Is HARTFIELD, MILLIE still producing?
- HARTFIELD, MILLIE is intermittent. The most recent month of production reported to the Railroad Commission of Texas for HARTFIELD, MILLIE is August 2026.
- How much has HARTFIELD, MILLIE produced?
- HARTFIELD, MILLIE has reported 405 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 2 wellbores.
- How much is HARTFIELD, MILLIE worth?
- The remaining production from HARTFIELD, MILLIE is estimated to be worth about $2K in total as of 27 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 HARTFIELD, MILLIE is a fraction of it. The estimate fits an Arps decline curve to the production HARTFIELD, MILLIE has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for HARTFIELD, MILLIE is an estimate of value, not an offer and not an appraisal.
- How much income does HARTFIELD, MILLIE generate in a year?
- HARTFIELD, MILLIE is forecast to net about $377 across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in HARTFIELD, MILLIE receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Donoco Oil Company |
|---|---|
| Field | La Vernia |
| County | Guadalupe County, Texas |
| RRC district | 01 |
| Lease number | 00838 |
| Wellbores | 2 |
| Reported production | 405 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $2K |
Where HARTFIELD, MILLIE 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.