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RRC field 54928500 · District 01

Lorenzo (Austin Chalk)

The Lorenzo (Austin Chalk) field reported 16 million barrels of oil and 122 million mcf of gas in the last 12 months.

Field dossier

16,379,992bbl oil, last 12 months+3% vs prior year
Producing leases
362of 440 on record
Operators
20
Counties
6
Biggest operator
SM Energy Company

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Where the field sits

fewermore

La Salle County: 3 producing leasesZavala County: 2 producing leasesDimmit County: 53 producing leasesWebb County: 301 producing leasesFrio County: 2 producing leasesMaverick County: 1 producing leaseLa SalleDimmitWebb
6 counties
Gas, last 12 months
121,501,363 mcf
Data through
Jul 2026

Five years of output in Lorenzo (Austin Chalk)

Oil output in the Lorenzo (Austin Chalk) field rose 3% over the last 12 months

16M bbl through Jul 2026, against 16M bbl a year earlier. Peak Oct 2025: 1.5M bbl.

Oil output in the Lorenzo (Austin Chalk) field rose 3% over the last 12 months16M bbl through Jul 2026, against 16M bbl a year earlier. Peak Oct 2025: 1.5M bbl.Oil, bbl per month0500k1M1.5MPeak 1.5M (Oct 25)1.3M20222023202420252026
Oil output in the Lorenzo (Austin Chalk) field rose 3% over the last 12 months16M bbl through Jul 2026, against 16M bbl a year earlier. Peak Oct 2025: 1.5M bbl.Oil, bbl per month0500k1M1.5MPeak 1.5M (Oct 25)1.3M'22'23'24'25'26

Gas output in the Lorenzo (Austin Chalk) field rose 6% over the last 12 months

121M mcf through Jul 2026, against 114M mcf a year earlier. Peak Nov 2025: 11M mcf.

Gas output in the Lorenzo (Austin Chalk) field rose 6% over the last 12 months121M mcf through Jul 2026, against 114M mcf a year earlier. Peak Nov 2025: 11M mcf.Gas, mcf per month02.5M5M7.5M10M13MPeak 11M (Nov 25)11M20222023202420252026
Gas output in the Lorenzo (Austin Chalk) field rose 6% over the last 12 months121M mcf through Jul 2026, against 114M mcf a year earlier. Peak Nov 2025: 11M mcf.Gas, mcf per month02.5M5M7.5M10M13MPeak 11M (Nov 25)11M'22'23'24'25'26

SourceTexas Railroad Commission Production Data Query, field 54928500, through Jul 2026, file dated Sep 18, 2026.

Leases in the Lorenzo (Austin Chalk) field

Under each volume: change on the year before.

Showing 25 of 150 (the 150 largest of 362), ranked by output value.

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SourceTexas Railroad Commission Production Data Query.

Who operates here, and where

Operators, by oil

SM Energy leads

  1. SM Energy Company194 leases7.7Mbbl
  2. Crescent Energy Operating, LLC54 leases2.8Mbbl
  3. Rosewood Resources, Inc.15 leases972kbbl
  4. Lewis Petro Properties, Inc.23 leases925kbbl
  5. Javelin Energy Partners Mgmt LLC16 leases903kbbl
  6. Rosetta Resources Operating LP11 leases799kbbl
  7. EOG Resources, Inc.14 leases723kbbl
  8. TBM Catarina, LLC4 leases373kbbl

Counties, by oil

Webb County leads

  1. Webb County301 leases14Mbbl
  2. Dimmit County53 leases2.1Mbbl
  3. La Salle County3 leases57.8kbbl
  4. Maverick County1 lease4,578bbl
  5. Zavala County2 leases2,597bbl
  6. Frio County2 leases1,444bbl

More operators

OperatorTBM Catarina, LLC4OperatorEl Toro Resources LLC3OperatorEndeavor Natural Gas, LP6OperatorMurphy Expl. & Prod. Co. - USA4

Recent drilling permits in the Lorenzo (Austin Chalk) field