GRANTHAM
GRANTHAM is a Texas oil lease in Martin County, Railroad Commission district 8A, operated by Maguire Oil Company. It has 4 wellbores on file with the Commission. Reported production runs from January 1993 to August 2026, totalling 41,389 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 $118K, with roughly $23K 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 17 barrels a month, about 4 per wellbore. Its strongest month on the record we hold was September 2016, at 184 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 GRANTHAM
- Who operates GRANTHAM?
- GRANTHAM is operated by Maguire Oil Company, Railroad Commission of Texas operator number 521980.
- Where is GRANTHAM?
- GRANTHAM is a Texas oil lease in Martin County, Texas, in Railroad Commission district 8A. Its Railroad Commission lease number is 60133.
- Is GRANTHAM still producing?
- GRANTHAM is currently producing. The most recent month of production reported to the Railroad Commission of Texas for GRANTHAM is August 2026.
- How much has GRANTHAM produced?
- GRANTHAM has reported 41,389 barrels of oil (bbl) to the Railroad Commission of Texas between January 1993 and August 2026, from 4 wellbores.
- How much is GRANTHAM worth?
- The remaining production from GRANTHAM is estimated to be worth about $118K in total as of 27 August 2026, within a range of $65K to $171K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in GRANTHAM is a fraction of it. The estimate fits an Arps decline curve to the production GRANTHAM has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for GRANTHAM is an estimate of value, not an offer and not an appraisal.
- How much income does GRANTHAM generate in a year?
- GRANTHAM is forecast to net about $23K across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in GRANTHAM receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Maguire Oil Company |
|---|---|
| Field | Ackerly (Dean Sand) |
| County | Martin County, Texas |
| RRC district | 8A |
| Lease number | 60133 |
| Wellbores | 4 |
| Reported production | 41,389 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $118K |
Where GRANTHAM 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.