CASSELMAN4
CASSELMAN4 is a Texas oil lease in Midland County, Railroad Commission district 08, operated by Henry Petroleum LP. It has 34 wellbores on file with the Commission. Reported production runs from February 2008 to August 2026, totalling 2,666,400 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 $5.1M, with roughly $4.9M 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 41,080 barrels a month, about 1,208 per wellbore. Its strongest month on the record we hold was November 2018, at 99,150 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 CASSELMAN4
- Who operates CASSELMAN4?
- CASSELMAN4 is operated by Henry Petroleum LP, Railroad Commission of Texas operator number 378642.
- Where is CASSELMAN4?
- CASSELMAN4 is a Texas oil lease in Midland County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 38675.
- Is CASSELMAN4 still producing?
- CASSELMAN4 is currently producing. The most recent month of production reported to the Railroad Commission of Texas for CASSELMAN4 is August 2026.
- How much has CASSELMAN4 produced?
- CASSELMAN4 has reported 2,666,400 barrels of oil (bbl) to the Railroad Commission of Texas between February 2008 and August 2026, from 34 wellbores.
- How much is CASSELMAN4 worth?
- The remaining production from CASSELMAN4 is estimated to be worth about $5.1M in total as of 27 August 2026, within a range of $4.2M to $6.0M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in CASSELMAN4 is a fraction of it. The estimate fits an Arps decline curve to the production CASSELMAN4 has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for CASSELMAN4 is an estimate of value, not an offer and not an appraisal.
- How much income does CASSELMAN4 generate in a year?
- CASSELMAN4 is forecast to net about $4.9M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in CASSELMAN4 receives a fraction of that, set by the decimal interest printed on their check stub.
Lease record
| Operator | Henry Petroleum LP |
|---|---|
| Field | Spraberry (Trend Area) |
| County | Midland County, Texas |
| RRC district | 08 |
| Lease number | 38675 |
| Wellbores | 34 |
| Reported production | 2,666,400 bbl |
| First reported | |
| Last reported | |
| Estimated royalty value | $5.1M |
Where CASSELMAN4 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.