HERRELL (GRAYBURG), District 08, Texas
A field is the Railroad Commission's unit of geology and of regulation. Its spacing rule is what decides how many wells an acreage can hold.
Our estimate: volumes the operator filed with the Commission, valued at the EIA first-purchase price for that month. It is not a payment anyone received, and it is not a royalty. It sums the 5 leases in this field that have a page here — 71% of the register's 7 — so it understates the field.
Production, 2025
The Railroad Commission's Oil and Gas Annual Report for 2025, its most recent. These are the state's figures for the whole field, not ours.
| Wells | In the field | Producing | Produced in 2025 | Also produced | Cumulative |
|---|---|---|---|---|---|
| Oil | 4 | 3 | 2,074 bbl | 0 mcfcasinghead | 425,198 bblsince discovery |
The discovery well's oil measured 35.0° API gravity, perforated at 1,691 ft.
Spacing rule
What the Commission requires of a well on this field.
| Wells | Rule | Effective | From the lease line | Between wells | Acres per unit | Max diagonal |
|---|---|---|---|---|---|---|
| Oil | B | — | 330 ft | 660 ft | 20 | 1,750 ft |
| Oil | O | — | 330 ft | 660 ft | 10 | 1,250 ft |
Commission remarks: OP. 10 ACRE DIAG. 1250
County
Leases in this field
Every lease here files this field's number with the Commission and has a page on this site.
| Lease | Operator | Value |
|---|---|---|
| GLASS -A- | KING ENERGY RESOURCES | $2.9 M |
| GLASS -B- | KING ENERGY RESOURCES | $693 k |
| GLASS | KING ENERGY RESOURCES | $469 k |
| TXL -A- | APACHE CORPORATION | $37 k |
| REYNOLDS -A- | GREEN, ROY W. OIL & GAS | $581 |
Field number 40751500, from the Railroad Commission's field register. The register's own index resolves 7 leases and 10 wells to this field by name, over every lease in Texas rather than only those with a page here. It resolves a lease by NAME and refuses an ambiguous one, so it counts nothing for a field that shares its name with another — which is why the lease count above comes from the field number instead.