TANKERSLEY (WOLFCAMP), District 7C, 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 7 leases in this field that have a page here — 58% of the register's 12 — 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 | 5 | 3 | 3,059 bbl | 6,203 mcfcasinghead | 623,054 bblsince discovery |
The discovery well's oil measured 38.8° API gravity, perforated at 5,464 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 | — | 467 ft | 1,200 ft | 80 | 3,250 ft |
| Oil | O | — | 467 ft | 1,200 ft | 40 | 2,100 ft |
Commission remarks: 40 ACRE OPTIONAL PRORATION UNITS, MAXIMUM DIAGONAL 2100'
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 |
|---|---|---|
| WILLIAMS | ROBERTSON RESOURCES, INC. | $6.6 M |
| WILLIAMS "E" | SWARTZ OIL COMPANY | $1.6 M |
| WILLIAMS "D" | THP OPERATING LLC | $1.0 M |
| WILLIAMS "C" | THP OPERATING LLC | $852 k |
| WILLIAMS 42 | CLR SECONDARY RECOVERY, LLC | $359 k |
| WINTERBOTHAM B | SIANA OIL & GAS | $86 k |
| WILLIAMS "F" | LADD OIL & GAS CORPORATION | $30 k |
Field number 88309600, from the Railroad Commission's field register. The register's own index resolves 12 leases and 18 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.