MASSIE 7-8 E
MASSIE 7-8 E is a Texas oil lease in Upton County, Railroad Commission district 7C, operated by Endeavor Energy Resources L.P. It has 1 wellbore on file with the Commission. Reported production runs from October 2022 to August 2026, totalling 109,584 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 $5.3M, with roughly $1.1M 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 1,729 barrels a month. Its strongest month on the record we hold was December 2022, at 9,459 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 MASSIE 7-8 E
- Who operates MASSIE 7-8 E?
- MASSIE 7-8 E is operated by Endeavor Energy Resources L.P., Railroad Commission of Texas operator number 251726.
- Where is MASSIE 7-8 E?
- MASSIE 7-8 E is a Texas oil lease in Upton County, Texas, in Railroad Commission district 7C. Its Railroad Commission lease number is 21909.
- Is MASSIE 7-8 E still producing?
- MASSIE 7-8 E is currently producing. The most recent month of production reported to the Railroad Commission of Texas for MASSIE 7-8 E is August 2026.
- How much has MASSIE 7-8 E produced?
- MASSIE 7-8 E has reported 109,584 barrels of oil (bbl) to the Railroad Commission of Texas between October 2022 and August 2026, from 1 wellbore.
- How much is MASSIE 7-8 E worth?
- The remaining production from MASSIE 7-8 E is estimated to be worth about $5.3M in total as of 26 August 2026, within a range of $4.4M to $6.2M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in MASSIE 7-8 E is a fraction of it. The estimate fits an Arps decline curve to the production MASSIE 7-8 E has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for MASSIE 7-8 E is an estimate of value, not an offer and not an appraisal.
- How much income does MASSIE 7-8 E generate in a year?
- MASSIE 7-8 E is forecast to net about $1.1M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in MASSIE 7-8 E receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Endeavor Energy Resources L.P. |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Upton County, Texas |
| RRC district | 7C |
| Lease number | 21909 |
| Wellbores | 1 |
| Reported production | 109,584 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $5.3M |
Where MASSIE 7-8 E 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.