MAG (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

with a page here

Operators

Value, all time

$31.3 M

32% of the register's 62

Discovered

1976-03-14

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 20 leases in this field that have a page here — 32% of the register's 62 — 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	10	6	8,322 bbl	3,080 mcfcasinghead	2,953,363 bblsince discovery

The discovery well's oil measured 28.2° API gravity, perforated at 7,484 ft.

Hydrogen sulphide

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	—	467 ft	1,867 ft	160	5,000 ft

Commission remarks: 80 ACRE OPTION W/4000' MAX DIAG.

County

Gonzales 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
ORTS, H.P. -B-	LACY 03, LLC	$10.5 M
MERCER, WILLIAM P. UNIT	LACY 03, LLC	$5.1 M
COOK, L.D.	SHIDLER, MARK L., INC.	$5.0 M
KING, RUFUS	LACY 03, LLC	$4.2 M
MUENZLER	FIRST ROCK, INC.	$2.3 M
SCHAUER, MONROE UNIT	FIRST ROCK, INC.	$2.1 M
FREEMAN	EOG RESOURCES, INC.	$1.2 M
ILEY, GEORGE R. ET AL	CRYSTAL RESOURCES, INC	$199 k
ORTS, H. P. A-4 UNIT	LACY 03, LLC	$165 k
ORTS, H. P. B	LACY 03, LLC	$157 k
COOK, JOHN D. UNIT	DREYFUS, LOUIS NATURAL GAS CORP	$157 k
WELLS, J.B. JR.	TDC ENGINEERING, INC.	$105 k
ILEY, G.R. ET AL	J.W. SERVICE COMPANY	$89 k
GESCHEIDLE	SANTA FE ENERGY OPER. PART., LP	$5 k
BOOTHE FARMS	OFFSPRING WELL SALVAGE	$4 k
COOK, ELVIN	SANTA FE ENERGY OPER. PART., LP	$4 k
CARNES, JAMES L.	LINDA PRODUCTION COMPANY	$3 k
ORTS, H.P. "A"	LACY, J. W., JR.	$2 k
RONNIE	UNION PACIFIC RESOURCES COMPANY	$2 k
MCMANUS, D.C.	DELAWARE LAND CO.	$2 k

Field number 56653200, from the Railroad Commission's field register. The register's own index resolves 62 leases and 73 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.