SERIO (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 — 63% of the register's 8 — 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 | 29 | 16 | 45,496 bbl | 4,349 mcfcasinghead | 7,168,729 bblsince discovery |
The discovery well's oil measured 29.0° API gravity, perforated at 4,806 ft.
Spacing rule
What the Commission requires of a well on this field.
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 |
|---|---|---|
| SERIO (GRAYBURG)UNIT | FASKEN OIL AND RANCH, LTD. | $105.9 M |
| FEE -Y- | FASKEN OIL AND RANCH, LTD. | $41.6 M |
| FASKEN | FASKEN OIL AND RANCH, LTD. | $13.7 M |
| FASKEN, DAVID "28" | TEMA OIL AND GAS COMPANY | $2.7 M |
| FEE -S- | FASKEN OIL AND RANCH, LTD. | $7 k |
Field number 82275500, from the Railroad Commission's field register. The register's own index resolves 8 leases and 76 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.