GREYSTOKE 1-5 E
GREYSTOKE 1-5 E is a Texas oil lease in Martin County, Railroad Commission district 08, operated by Diamondback E&P LLC. It has 1 wellbore on file with the Commission. Reported production runs from September 2025 to August 2026, totalling 171,169 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 $72.5M, with roughly $13.7M 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 13,275 barrels a month. Its strongest month on the record we hold was April 2026, at 66,863 barrels. In our own backtest, leases producing at this rate are forecast to within about 18% 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 GREYSTOKE 1-5 E
- Who operates GREYSTOKE 1-5 E?
- GREYSTOKE 1-5 E is operated by Diamondback E&P LLC, Railroad Commission of Texas operator number 217012.
- Where is GREYSTOKE 1-5 E?
- GREYSTOKE 1-5 E is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 64688.
- Is GREYSTOKE 1-5 E still producing?
- GREYSTOKE 1-5 E is intermittent. The most recent month of production reported to the Railroad Commission of Texas for GREYSTOKE 1-5 E is August 2026.
- How much has GREYSTOKE 1-5 E produced?
- GREYSTOKE 1-5 E has reported 171,169 barrels of oil (bbl) to the Railroad Commission of Texas between September 2025 and August 2026, from 1 wellbore.
- How much is GREYSTOKE 1-5 E worth?
- The remaining production from GREYSTOKE 1-5 E is estimated to be worth about $72.5M in total as of 26 August 2026, within a range of $59.4M to $85.5M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in GREYSTOKE 1-5 E is a fraction of it. The estimate fits an Arps decline curve to the production GREYSTOKE 1-5 E has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for GREYSTOKE 1-5 E is an estimate of value, not an offer and not an appraisal.
- How much income does GREYSTOKE 1-5 E generate in a year?
- GREYSTOKE 1-5 E is forecast to net about $13.7M across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in GREYSTOKE 1-5 E receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Diamondback E&P LLC |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Martin County, Texas |
| RRC district | 08 |
| Lease number | 64688 |
| Wellbores | 1 |
| Reported production | 171,169 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $72.5M |
Where GREYSTOKE 1-5 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.