CALVERLEY 4
CALVERLEY 4 is a Texas oil lease in Glasscock County, Railroad Commission district 08, operated by Laredo Petroleum, Inc. It has 5 wellbores on file with the Commission. Reported production runs from April 2010 to August 2026, totalling 321,632 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 $761K, with roughly $127K 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 141 barrels a month, about 28 per wellbore. Its strongest month on the record we hold was May 2016, at 1,354 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 CALVERLEY 4
- Who operates CALVERLEY 4?
- CALVERLEY 4 is operated by Laredo Petroleum, Inc., Railroad Commission of Texas operator number 486610.
- Where is CALVERLEY 4?
- CALVERLEY 4 is a Texas oil lease in Glasscock County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 40153.
- Is CALVERLEY 4 still producing?
- CALVERLEY 4 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for CALVERLEY 4 is August 2026.
- How much has CALVERLEY 4 produced?
- CALVERLEY 4 has reported 321,632 barrels of oil (bbl) to the Railroad Commission of Texas between April 2010 and August 2026, from 5 wellbores.
- How much is CALVERLEY 4 worth?
- The remaining production from CALVERLEY 4 is estimated to be worth about $761K in total as of 26 August 2026, within a range of $593K to $928K. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in CALVERLEY 4 is a fraction of it. The estimate fits an Arps decline curve to the production CALVERLEY 4 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for CALVERLEY 4 is an estimate of value, not an offer and not an appraisal.
- How much income does CALVERLEY 4 generate in a year?
- CALVERLEY 4 is forecast to net about $127K across the whole undivided lease over the twelve months following 26 August 2026, before income tax. A royalty owner in CALVERLEY 4 receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Laredo Petroleum, Inc. |
|---|---|
| Field | Garden City, S. (Wolfcamp) |
| County | Glasscock County, Texas |
| RRC district | 08 |
| Lease number | 40153 |
| Wellbores | 5 |
| Reported production | 321,632 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $761K |
Where CALVERLEY 4 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.