MARCELINA CREEK (AUSTIN CHALK), District 01, 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
93
with a page here
Operators
48
Value, all time
$102.0 M
57% of the register's 164
Discovered
1980-10-09
Oil
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 93 leases in this field that have a page here — 57% of the register's 164 — 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
35
21
69,312 bbl
12,827 mcfcasinghead
5,391,947 bblsince discovery
The discovery well's oil measured 42.0° API gravity, perforated at 8,060 ft.
Hydrogen sulphide
Spacing rule
What the Commission requires of a well on this field.
Field number 57367500, from the Railroad Commission's field register. The register's own index resolves 164 leases and 198 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.