CHAPMAN RANCH (MID. FRIO CONS.), District 04, 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 3 leases in this field that have a page here — 50% of the register's 6 — 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 | 1 | 0 | 0 bbl | 0 mcfcasinghead | 858 bblsince discovery |
| Gas | 2 | 0 | 0 mcf | 0 bblcondensate | 69,404 mcfsince 1970 |
This field filed no production for 2025. It remains on the Commission's schedules.
The discovery well's oil measured 30.8° API gravity, perforated at 9,670 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 |
|---|---|---|---|---|---|---|
| Gas | B | 2003-10-23 | 330 ft | 0 ft | 40 | 0 ft |
| Oil | B | 2006-11-01 | 330 ft | 0 ft | 40 | 0 ft |
Commission remarks: FIELD CHANGED FROM A ONE WELL FIELD TO PRORATED FIELD EFF 2/1/17;
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 |
|---|---|---|
| CHAPMAN | WESTERN GULF OIL & GAS, LLC | $234 k |
| LEHMAN | XOG OPERATING LLC | $71 k |
| CHAPMAN, J. O. | DECKER OPERATING CO., L.L.C. | $55 k |
Field number 17075370, from the Railroad Commission's field register. The register's own index resolves 6 leases and 13 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.