LORENZO (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

370

with a page here

Operators

Value, all time

$6.18 bn

76% of the register's 484

Discovered

2009-10-26

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 370 leases in this field that have a page here — 76% of the register's 484 — 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	122	92	2,125,073 bbl	6,611,396 mcfcasinghead	13,695,910 bblsince discovery
Gas	324	264	109,712,893 mcf	12,040,758 bblcondensate	404,590,357 mcfsince 1970

The discovery well's oil measured 32.1° API gravity, perforated at 5,187 ft.

Hydrogen sulphide

Spacing rule

What the Commission requires of a well on this field.

Wells	Rule	Effective	From the lease line	Acres per unit	Max diagonal
Gas	B	2015-02-10	330 ft	80	0 ft
Gas	O	2015-02-10	330 ft	40	99,999 ft
Oil	B	2023-08-22	330 ft	80	0 ft
Oil	O	2023-08-22	330 ft	40	99,999 ft

Commission remarks: A UFT FIELD. FIELD GETS UFT ALLOWABLE, EFFECTIVE 08-22-2023

Counties

Webb County Zavala County

Leases in this field

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

Showing the 200 largest of 370 leases, by the value we compute. Every one of them is in the sitemap.

Lease	Operator	Value
BRISCOE C	SM ENERGY COMPANY	$132.2 M
COMANCHE	EL TORO RESOURCES LLC	$125.6 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$64.6 M
SAN AMBROSIA D (SA4)	SM ENERGY COMPANY	$59.1 M
BRISCOE C (SA4)	SM ENERGY COMPANY	$53.7 M
SAN AMBROSIA F (SA28) STATE	SM ENERGY COMPANY	$51.6 M
BRISCOE C (SA10) STATE	SM ENERGY COMPANY	$48.9 M
GALVAN RANCH	SM ENERGY COMPANY	$47.6 M
BRISCOE C (SA12) STATE	SM ENERGY COMPANY	$46.7 M
GALVAN RANCH	SM ENERGY COMPANY	$46.6 M
BRISCOE B (SA1)	SM ENERGY COMPANY	$43.8 M
SAN AMBROSIA F (SA30)	SM ENERGY COMPANY	$42.0 M
BRISCOE C (SA9)	SM ENERGY COMPANY	$41.5 M
BRISCOE C (SA14)	SM ENERGY COMPANY	$41.4 M
BRISCOE C (SA6)	SM ENERGY COMPANY	$40.1 M
BRISCOE C (SA7)	SM ENERGY COMPANY	$39.9 M
GATES 07-DR	LEWIS PETRO PROPERTIES, INC.	$39.7 M
BRISCOE-MCKNIGHT	MAGNOLIA OIL & GAS OPERATING LLC	$39.5 M
CODIGO	EOG RESOURCES, INC.	$38.3 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$37.9 M
SAN AMBROSIA F	SM ENERGY COMPANY	$37.3 M
BRISCOE C (SA13) STATE	SM ENERGY COMPANY	$37.2 M
BRISCOE C (SA8)	SM ENERGY COMPANY	$36.5 M
GALVAN RANCH	SM ENERGY COMPANY	$36.4 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$36.2 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$36.2 M
GALVAN RANCH	SM ENERGY COMPANY	$36.0 M
BRISCOE C (SA17) STATE	SM ENERGY COMPANY	$35.8 M
BRISCOE C (SA5)	SM ENERGY COMPANY	$35.7 M
GALVAN RANCH	SM ENERGY COMPANY	$35.1 M
GALVAN RANCH	SM ENERGY COMPANY	$34.7 M
BRISCOE C (SA21) STATE	SM ENERGY COMPANY	$33.7 M
SAN AMBROSIA F (SA29)	SM ENERGY COMPANY	$33.6 M
BRISCOE R (SA27) STATE	SM ENERGY COMPANY	$33.3 M
BRISCOE C (SA23)	SM ENERGY COMPANY	$33.3 M
BRISCOE B (SA14)	SM ENERGY COMPANY	$33.0 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$32.9 M
CODIGO	EOG RESOURCES, INC.	$32.8 M
GALVAN RANCH	SM ENERGY COMPANY	$32.4 M
GATES 09-ROSE B BB	ROSETTA RESOURCES OPERATING LP	$32.2 M
BRISCOE G	SM ENERGY COMPANY	$31.9 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$31.9 M
WATSON (SA2) STATE	SM ENERGY COMPANY	$30.9 M
GALVAN RANCH	SM ENERGY COMPANY	$30.6 M
SAN AMBROSIA F (SA32)	SM ENERGY COMPANY	$30.0 M
SAN AMBROSIA D (SA5)	SM ENERGY COMPANY	$29.9 M
GATES 07-DR	LEWIS PETRO PROPERTIES, INC.	$29.8 M
BRISCOE C	SM ENERGY COMPANY	$29.4 M
BRISCOE R (SA26) STATE	SM ENERGY COMPANY	$29.1 M
BRISCOE C (SA19) STATE	SM ENERGY COMPANY	$28.7 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$28.6 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$28.0 M
BRISCOE C (SA15) STATE	SM ENERGY COMPANY	$28.0 M
GALVAN RANCH	SM ENERGY COMPANY	$27.7 M
GALVAN RANCH	SM ENERGY COMPANY	$27.6 M
GATES 010 CHK-B TR1	CRESCENT ENERGY OPERATING, LLC	$27.6 M
GATES 11-DR	LEWIS PETRO PROPERTIES, INC.	$27.1 M
BRISCOE R	SM ENERGY COMPANY	$27.1 M
GALVAN RANCH	SM ENERGY COMPANY	$26.9 M
GALVAN RANCH	SM ENERGY COMPANY	$26.9 M
GATES 11-DR	LEWIS PETRO PROPERTIES, INC.	$26.8 M
GALVAN RANCH	SM ENERGY COMPANY	$26.5 M
BRISCOE C (SA20) STATE	SM ENERGY COMPANY	$26.4 M
SAN AMBROSIA F (SA35)	SM ENERGY COMPANY	$26.3 M
MORGENSTERN-FASKEN STATE GU	LEWIS PETRO PROPERTIES, INC.	$26.0 M
GALVAN RANCH	SM ENERGY COMPANY	$25.8 M
GALVAN RANCH	SM ENERGY COMPANY	$25.8 M
GALVAN RANCH	SM ENERGY COMPANY	$25.7 M
BRISCOE B (SA12)	SM ENERGY COMPANY	$25.7 M
BRISCOE CATARINA SOUTH	JAVELIN ENERGY PARTNERS MGMT LLC	$25.5 M
BRISCOE G (SA9)	SM ENERGY COMPANY	$25.4 M
GATES 010 CHK-B TR1	CRESCENT ENERGY OPERATING, LLC	$25.3 M
BRISCOE G (SA11)	SM ENERGY COMPANY	$24.8 M
GALVAN RANCH	SM ENERGY COMPANY	$24.8 M
GALVAN RANCH LP	SM ENERGY COMPANY	$24.8 M
BRISCOE R	SM ENERGY COMPANY	$24.6 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$24.6 M
BRISCOE G (SA15) STATE	SM ENERGY COMPANY	$24.4 M
BRIGGS A	MURPHY EXPL. & PROD. CO. - USA	$24.4 M
BRISCOE J (SA8)	SM ENERGY COMPANY	$24.4 M
GALVAN RANCH	SM ENERGY COMPANY	$24.3 M
BRISCOE G	SM ENERGY COMPANY	$24.2 M
STANLEY RANCH	JAVELIN ENERGY PARTNERS MGMT LLC	$23.8 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$23.6 M
BRISCOE J (SA7)	SM ENERGY COMPANY	$23.4 M
BRISCOE C (SA1) STATE	SM ENERGY COMPANY	$23.3 M
GALVAN STATE	SM ENERGY COMPANY	$23.1 M
GALVAN RANCH	SM ENERGY COMPANY	$23.1 M
SAN AMBROSIA C (SA3)	SM ENERGY COMPANY	$23.0 M
GALVAN RANCH	SM ENERGY COMPANY	$22.7 M
GALVAN RANCH	SM ENERGY COMPANY	$22.7 M
WORTHEY RANCH	JAVELIN ENERGY PARTNERS MGMT LLC	$22.6 M
GALVAN RANCH	SM ENERGY COMPANY	$22.6 M
CACTUS JACK	TROUBADOUR OPERATING, LLC	$22.4 M
GALVAN RANCH	SM ENERGY COMPANY	$22.4 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$22.4 M
BRISCOE G (SA12)	SM ENERGY COMPANY	$22.4 M
GALVAN RANCH	SM ENERGY COMPANY	$22.3 M
BRISCOE G (SA13) STATE	SM ENERGY COMPANY	$22.3 M
GALVAN RANCH	SM ENERGY COMPANY	$22.0 M
BRISCOE C (SA18) STATE	SM ENERGY COMPANY	$21.9 M
SAN AMBROSIA F (SA26) STATE	SM ENERGY COMPANY	$21.8 M
GALVAN RANCH	SM ENERGY COMPANY	$21.8 M
GALVAN RANCH	SM ENERGY COMPANY	$21.6 M
GALVAN RANCH	SM ENERGY COMPANY	$21.6 M
GALVAN RANCH	SM ENERGY COMPANY	$21.5 M
WORTHEY RANCH	JAVELIN ENERGY PARTNERS MGMT LLC	$21.2 M
SAN AMBROSIA F (SA31)	SM ENERGY COMPANY	$21.1 M
ANEJO B	EOG RESOURCES, INC.	$21.1 M
GALVAN RANCH	SM ENERGY COMPANY	$21.0 M
ANEJO A	EOG RESOURCES, INC.	$21.0 M
BRISCOE C (SA11) STATE	SM ENERGY COMPANY	$20.9 M
BRISCOE C (SA16) STATE	SM ENERGY COMPANY	$20.7 M
SAN AMBROSIA F (SA45) STATE	SM ENERGY COMPANY	$20.6 M
BRISCOE R (SA24)	SM ENERGY COMPANY	$20.6 M
GALVAN RANCH	SM ENERGY COMPANY	$20.6 M
COTULLA	LEWIS PETRO PROPERTIES, INC.	$20.5 M
GATES 010 CHK-A TR3	CRESCENT ENERGY OPERATING, LLC	$20.4 M
GALVAN RANCH	SM ENERGY COMPANY	$20.3 M
GATES 010 CHK-B TR1	CRESCENT ENERGY OPERATING, LLC	$19.6 M
BRISCOE R (SA22)	SM ENERGY COMPANY	$19.6 M
TRES RAMAS AC	ROSEWOOD RESOURCES, INC.	$19.5 M
BRISCOE C	SM ENERGY COMPANY	$19.5 M
BRISCOE RANCH	SM ENERGY COMPANY	$19.4 M
GALVAN RANCH	SM ENERGY COMPANY	$19.3 M
GALVAN RANCH	SM ENERGY COMPANY	$19.1 M
BRISCOE B (SA17)	SM ENERGY COMPANY	$19.1 M
GATES 09-ROSE B AA	ROSETTA RESOURCES OPERATING LP	$19.1 M
AGAVE A	EOG RESOURCES, INC.	$19.1 M
STANLEY RANCH	JAVELIN ENERGY PARTNERS MGMT LLC	$19.0 M
BRISCOE R	SM ENERGY COMPANY	$18.9 M
GALVAN RANCH	SM ENERGY COMPANY	$18.8 M
SAN AMBROSIA C (SA1)	SM ENERGY COMPANY	$18.7 M
SAN AMBROSIA F	SM ENERGY COMPANY	$18.5 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$18.4 M
GALVAN RANCH	SM ENERGY COMPANY	$18.3 M
BRISCOE R	SM ENERGY COMPANY	$18.2 M
BRISCOE G	SM ENERGY COMPANY	$18.2 M
GATES 010 CHK-B TR1	CRESCENT ENERGY OPERATING, LLC	$18.1 M
PGE DOS	CRESCENT ENERGY OPERATING, LLC	$18.1 M
GATES 010 CHK-A TR3	CRESCENT ENERGY OPERATING, LLC	$18.0 M
BRISCOE B (SA23)	SM ENERGY COMPANY	$18.0 M
BRISCOE C (SA24)	SM ENERGY COMPANY	$17.9 M
GALVAN RANCH	SM ENERGY COMPANY	$17.8 M
JOHN GARNER RANCH	TROUBADOUR OPERATING, LLC	$17.8 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$17.5 M
GALVAN RANCH	SM ENERGY COMPANY	$17.0 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$17.0 M
BRISCOE FRIDAY AC	ROSEWOOD RESOURCES, INC.	$16.9 M
SAN AMBROSIA D (SA11)	SM ENERGY COMPANY	$16.9 M
BRISCOE G	SM ENERGY COMPANY	$16.9 M
AGAVE B	EOG RESOURCES, INC.	$16.8 M
GALVAN RANCH	SM ENERGY COMPANY	$16.7 M
JOHN GARNER RANCH	TROUBADOUR OPERATING, LLC	$16.6 M
TRES RAMAS AC	ROSEWOOD RESOURCES, INC.	$16.4 M
PGE BROWNE	CRESCENT ENERGY OPERATING, LLC	$16.4 M
SAN AMBROSIA F (SA34)	SM ENERGY COMPANY	$16.3 M
COTULLA	LEWIS PETRO PROPERTIES, INC.	$16.2 M
CACTUS JACK	TROUBADOUR OPERATING, LLC	$16.2 M
BRISCOE A	SM ENERGY COMPANY	$16.1 M
GATES 07-DR	LEWIS PETRO PROPERTIES, INC.	$16.1 M
CACTUS JACK	TROUBADOUR OPERATING, LLC	$16.1 M
GALVAN RANCH	SM ENERGY COMPANY	$16.0 M
PGE BROWNE C	CRESCENT ENERGY OPERATING, LLC	$16.0 M
WORTHEY RANCH	JAVELIN ENERGY PARTNERS MGMT LLC	$15.9 M
GALVAN RANCH	SM ENERGY COMPANY	$15.5 M
BRISCOE RANCH	ENDEAVOR NATURAL GAS, LP	$15.5 M
GALVAN RANCH	SM ENERGY COMPANY	$15.5 M
GALVAN RANCH	SM ENERGY COMPANY	$15.4 M
GATES 05-D	ROSETTA RESOURCES OPERATING LP	$15.1 M
BRISCOE B (SA24)	SM ENERGY COMPANY	$15.1 M
CODIGO	EOG RESOURCES, INC.	$15.0 M
KLEIMANN	CML EXPLORATION, LLC	$15.0 M
GALVAN RANCH	SM ENERGY COMPANY	$14.9 M
GALVAN RANCH	SM ENERGY COMPANY	$14.7 M
GALVAN RANCH	SM ENERGY COMPANY	$14.6 M
BRISCOE B (SA15)	SM ENERGY COMPANY	$14.6 M
GALVAN RANCH	SM ENERGY COMPANY	$14.5 M
BRISCOE G (SA14) STATE	SM ENERGY COMPANY	$14.4 M
SAN AMBROSIA F (SA38)	SM ENERGY COMPANY	$14.4 M
GATES 07-DR	LEWIS PETRO PROPERTIES, INC.	$14.3 M
LLOYD HURT AC-C	JAVELIN ENERGY PARTNERS MGMT LLC	$14.3 M
CODIGO	EOG RESOURCES, INC.	$14.3 M
BRISCOE J (SA5)	SM ENERGY COMPANY	$14.3 M
FAITH-YANA	CRESCENT ENERGY OPERATING, LLC	$14.3 M
BRISCOE B (SA21)	SM ENERGY COMPANY	$14.1 M
SAN AMBROSIA F (SA43) STATE	SM ENERGY COMPANY	$14.1 M
GATES 07-DR	LEWIS PETRO PROPERTIES, INC.	$14.1 M
GALVAN RANCH	SM ENERGY COMPANY	$13.9 M
BRISCOE B (SA18)	SM ENERGY COMPANY	$13.8 M
WORTHEY RANCH	JAVELIN ENERGY PARTNERS MGMT LLC	$13.7 M
BRISCOE CATARINA AC	BLACK MOUNTAIN STX I LLC	$13.3 M
SAN AMBROSIA F (SA36)	SM ENERGY COMPANY	$13.3 M
SAN AMBROSIA D	SM ENERGY COMPANY	$13.3 M
BRISCOE RANCH	ENDEAVOR NATURAL GAS, LP	$13.2 M
GALVAN RANCH	SM ENERGY COMPANY	$13.2 M
GATES 010 CHK-A TR3	CRESCENT ENERGY OPERATING, LLC	$13.1 M
BRISCOE G (SA10)	SM ENERGY COMPANY	$13.1 M
CODIGO	EOG RESOURCES, INC.	$13.0 M
GALVAN RANCH	SM ENERGY COMPANY	$13.0 M

Field number 54928500, from the Railroad Commission's field register. The register's own index resolves 484 leases and 599 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.