MARTIN (SECOND SIMPSON SD.), 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 4 leases in this field that have a page here — 100% of the register's 4 — 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 | 3 | 1 | 9,517 bbl | 1,272 mcfcasinghead | 714,999 bblsince discovery |
The discovery well's oil measured 42.8° API gravity, perforated at 8,788 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 |
|---|---|---|
| LOCKHART | WINN OPERATING, LLC | $16.0 M |
| PARKER, J. E. | HILCORP ENERGY COMPANY | $1.4 M |
| UNIVERSITY 11 SEC 1 | OXY USA EOR, LLC | $749 k |
| UNIV. -11-SEC.-1- | BP AMERICA PRODUCTION COMPANY | $561 k |
Field number 57774584, from the Railroad Commission's field register. The register's own index resolves 4 leases and 4 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.