FRASS (TONKAWA), District 10, 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.

Leases
19
with a page here
Operators
11
Value, all time
$23.9 M
68% of the register's 28
Discovered
1959-05-26
Oil and gas

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 19 leases in this field that have a page here — 68% of the register's 28 — 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.

WellsIn the fieldProducingProduced in 2025Also producedCumulative
Oil2114473 bbl495 mcfcasinghead3,504,104 bblsince discovery
Gas000 mcf0 bblcondensate1,055,572 mcfsince 1970

The discovery well's oil measured 42.0° API gravity, perforated at 6,130 ft.

Spacing rule

What the Commission requires of a well on this field.

WellsRuleEffectiveFrom the lease lineBetween wellsAcres per unitMax diagonal
GasB660 ft1,320 ft6406,000 ft
OilB660 ft1,320 ft803,250 ft

Commission remarks: GAS ALL 8 X 6/B/

County

Leases in this field

Every lease here files this field's number with the Commission and has a page on this site.

Field number 32773875, from the Railroad Commission's field register. The register's own index resolves 28 leases and 61 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.