SHIMANO 28-40 J
SHIMANO 28-40 J 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 October 2024 to August 2026, totalling 176,224 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 $10.3M, with roughly $4.0M 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 11,677 barrels a month. Its strongest month on the record we hold was May 2025, at 24,681 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 SHIMANO 28-40 J
- Who operates SHIMANO 28-40 J?
- SHIMANO 28-40 J is operated by Diamondback E&P LLC, Railroad Commission of Texas operator number 217012.
- Where is SHIMANO 28-40 J?
- SHIMANO 28-40 J is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 62446.
- Is SHIMANO 28-40 J still producing?
- SHIMANO 28-40 J is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SHIMANO 28-40 J is August 2026.
- How much has SHIMANO 28-40 J produced?
- SHIMANO 28-40 J has reported 176,224 barrels of oil (bbl) to the Railroad Commission of Texas between October 2024 and August 2026, from 1 wellbore.
- How much is SHIMANO 28-40 J worth?
- The remaining production from SHIMANO 28-40 J is estimated to be worth about $10.3M in total as of 27 August 2026, within a range of $8.4M to $12.1M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SHIMANO 28-40 J is a fraction of it. The estimate fits an Arps decline curve to the production SHIMANO 28-40 J has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SHIMANO 28-40 J is an estimate of value, not an offer and not an appraisal.
- How much income does SHIMANO 28-40 J generate in a year?
- SHIMANO 28-40 J is forecast to net about $4.0M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in SHIMANO 28-40 J 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 | 62446 |
| Wellbores | 1 |
| Reported production | 176,224 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $10.3M |
Where SHIMANO 28-40 J 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.