SHIRLEY
SHIRLEY is a Texas oil lease in Midland County, Railroad Commission district 08, operated by Summit Petroleum LLC. It has 3 wellbores on file with the Commission. Reported production runs from June 2010 to August 2026, totalling 129,157 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 $617K, with roughly $154K 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 229 barrels a month, about 76 per wellbore. Its strongest month on the record we hold was April 2017, at 792 barrels. In our own backtest, leases producing at this rate are forecast to within about 22% 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 SHIRLEY
- Who operates SHIRLEY?
- SHIRLEY is operated by Summit Petroleum LLC, Railroad Commission of Texas operator number 829221.
- Where is SHIRLEY?
- SHIRLEY is a Texas oil lease in Midland County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 40349.
- Is SHIRLEY still producing?
- SHIRLEY is currently producing. The most recent month of production reported to the Railroad Commission of Texas for SHIRLEY is August 2026.
- How much has SHIRLEY produced?
- SHIRLEY has reported 129,157 barrels of oil (bbl) to the Railroad Commission of Texas between June 2010 and August 2026, from 3 wellbores.
- How much is SHIRLEY worth?
- The remaining production from SHIRLEY is estimated to be worth about $617K in total as of 26 August 2026, within a range of $482K to $753K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in SHIRLEY is a fraction of it. The estimate fits an Arps decline curve to the production SHIRLEY has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for SHIRLEY is an estimate of value, not an offer and not an appraisal.
- How much income does SHIRLEY generate in a year?
- SHIRLEY is forecast to net about $154K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in SHIRLEY receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Summit Petroleum LLC |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Midland County, Texas |
| RRC district | 08 |
| Lease number | 40349 |
| Wellbores | 3 |
| Reported production | 129,157 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $617K |
Where SHIRLEY 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.