LA SARA (NO. 40 SAND), 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 4 leases in this field that have a page here — 80% of the register's 5 — 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 | 1 | 10 bbl | 0 mcfcasinghead | 116,104 bblsince discovery |
| Gas | 1 | 1 | 2,323 mcf | 0 bblcondensate | 172,715 mcfsince 1970 |
The discovery well's oil measured 42.0° API gravity, perforated at 6,532 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 | 933 ft | 20 | 1,500 ft |
Commission remarks: 01/06/11, FIELD DESIGNATION CHANGED FROM 49B TO ONE WELL.
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 |
|---|---|---|
| YTURRIA | TEXAS OIL AND GAS OPERATING, LLC | $1.6 M |
| YTURRIA | LA SARA OPERATING COMPANY, LLC | $1.3 M |
| YTURRIA | BLAKENERGY OPERATING, LLC | $1.1 M |
| YTURRIA | TEXAS OIL AND GAS OPERATING, LLC | $67 k |
Field number 51046696, from the Railroad Commission's field register. The register's own index resolves 5 leases and 6 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.