AMACKER-TIPPETT, SW (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.
Leases
80
with a page here
Operators
16
Value, all time
$573.5 M
85% of the register's 94
Discovered
1977-05-29
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 80 leases in this field that have a page here — 85% of the register's 94 — 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
16
6
12,017 bbl
55,138 mcfcasinghead
32,149,585 bblsince discovery
Gas
5
2
13,807 mcf
64 bblcondensate
4,796,951 mcfsince 1970
The discovery well's oil measured 43.6° API gravity, perforated at 9,218 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
1996-05-01
660 ft
1,320 ft
160
4,200 ft
Gas
O
1996-05-01
660 ft
1,320 ft
80
3,200 ft
Oil
B
—
660 ft
1,320 ft
160
4,200 ft
Oil
O
—
660 ft
1,320 ft
80
3,200 ft
Commission remarks: AOF-1 AND AOF-2 EFFECTIVE 05/01/2002.
Field number 02220700, from the Railroad Commission's field register. The register's own index resolves 94 leases and 140 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.