Frio County Drilling Permits

Every permit issued by the Texas Railroad Commission in Frio County — updated daily, data through 2026-09-11.

Frio County permitting is running 8.0 permits a month over the trailing 90 days (24 total, up 33% on the prior quarter). 2 were issued in the past week. FORMENTERA OPERATIONS LLC leads with 46 permits in the past 12 months, one of 7 operators active in the county.

Last 30 Days

Operators (30d)

Latest Permit

2026-09-11

All Time

4,301

4,301 permits

ISSUED	PERMIT	API	LEASE	OPERATOR	TYPE	DEPTH	HZ
2000-04-21	494311	42-163-33288	HITZFELDER #14	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	3,500
2000-04-21	494310	42-163-33287	HITZFELDER #13	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	3,500
2000-04-20	494299	42-163-31740	KEYSTONE #4	LIGHT RESOURCES	RECOMP	6,825
2000-04-10	493838	42-163-33286	CALAME #3	CALAME, JACK	DRILL	3,300
2000-03-28	493422	42-163-00045	HITZFELDER #2	PROPERTY DEVELOPMENT GROUP, INC.	RECOMP	1,000
2000-03-02	492665	42-163-33047	NORTEX/WILLIAMS #1	NORTEX EXPLORATION, INC.	RECOMP	9,800	Y
1999-12-22	490585	42-163-33285	ORNELAS, FILEMON #1	CALAME, JACK	DRILL	2,000
1999-12-17	489630	42-163-33284	FARMCO TRUST #1	TECH RESOURCES, INC.	DRILL	4,800
1999-10-13	488396	42-163-33283	HITZFELDER #10	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	3,500
1999-10-01	488044	42-163-33282	KOTHMANN TRUST, ET AL #1	SPILLER OPERATING CO., INC.	DRILL	5,700
1999-08-27	486866	42-163-33281	CALAME #4	HOUSTON PET. CO.	DRILL	4,000
1999-07-13	485820	42-163-30072	SMITH ET AL #1	CLIPPER OPERATING CO., INC.	RENTR	3,500
1999-04-22	484046	42-163-30188	CALVERT #3H	PEDECO, INC.	RECOMP	9,500	Y
1999-04-09	483692	42-163-33260	HITZFELDER #4	PROPERTY DEVELOPMENT GROUP, INC.	RECOMP	2,580
1999-04-06	483655	42-163-33280	BROWN #4	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1999-04-06	483655	42-163-33280	BROWN #4	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1999-03-04	483002	42-163-33279	BROWN #3	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1999-03-04	483002	42-163-33279	BROWN #3	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1999-02-25	482935	42-163-33278	BROWN #2	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	3,500
1998-12-28	481545	42-163-33277	BROWN #1	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1998-11-30	481189	42-163-01195	KELFER-LYNCH #2H	PEDECO, INC.	RENTR	7,000	Y
1998-10-20	480215	42-163-33276	CALAME #2	CALAME, JACK	DRILL	3,100
1998-09-15	479352	42-163-33242	BURLESON #1H	PEDECO, INC.	RECOMP	8,000	Y
1998-09-01	479181	42-163-32327	BURLESON "B" #2H	PEDECO, INC.	RENTR	8,000	Y
1998-07-22	478056	42-163-33275	HITZFELDER #9	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1998-07-21	478077	42-163-01354	BURLESON #3H	PEDECO, INC.	RENTR	7,000	Y
1998-07-16	478021	42-163-01191	KELFER-LYNCH #1H	PEDECO, INC.	RENTR	7,000	Y
1998-07-15	477971	42-163-30750	KELFER-MUDD #2H	PEDECO, INC.	RENTR	8,000	Y
1998-06-11	476876	42-163-33274	HITZFELDER #8	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1998-05-15	476235	42-163-01642	CALVERT #1H	PEDECO, INC.	RENTR	7,000	Y
1998-05-13	476153	42-163-33273	HALFF & OPPENHEIMER #2	PEDECO, INC.	DRILL	7,000
1998-04-06	475008	42-163-33272	HITZFELDER #7	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1998-04-01	474827	42-163-33271	CALAME #1	CALAME, JACK	DRILL	4,000
1998-02-19	473293	42-163-33270	HITZFELDER #6	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1998-02-19	473293	42-163-33270	HITZFELDER #6	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1998-01-23	472456	42-163-33269	HITZFELDER #5	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	4,000
1997-12-17	471348	42-163-33268	THOMPSON WEBB 'B' #36	HCM	DRILL	3,800
1997-12-17	471348	42-163-33268	THOMPSON, WEBB 'B' #36	HCM	DRILL	3,800
1997-12-04	469777	42-163-32594	BUCKLEY, CLIFFORD #1 #1	MEGA ENERGY & OPERATING INC.	RECOMP	7,500	Y
1997-12-01	470668	42-163-33266	MEADOR, G. E. #408	OILEX INT'L INVESTMENTS, INC.	DRILL	3,500
1997-11-21	470269	42-163-33265	NIXON-DILLARD #1A	INLAND OCEAN, INC.	DRILL	5,300
1997-11-19	470288	42-163-33264	BIG FOOT OLMOS 'B' SAND UNIT #305AC	HCM	DRILL	4,000
1997-11-19	470288	42-163-33264	BURNS, JANE #305AC	HCM	DRILL	4,000
1997-11-19	470287	42-163-33262	BIG FOOT OLMOS 'B' SAND UNIT #365AC	HCM	DRILL	4,000
1997-11-19	470287	42-163-33262	WEBB THOMPSON -B- #365AC	HCM	DRILL	4,000
1997-11-19	470286	42-163-33261	BIG FOOT OLMOS 'B' SAND UNIT #252AC	HCM	DRILL	4,000
1997-11-19	470286	42-163-33261	BURNS, JANE #252AC	HCM	DRILL	4,000
1997-11-19	470285	42-163-33263	BIG FOOT OLMOS 'B' SAND UNIT #210AC	HCM	DRILL	4,000
1997-11-14	469643	42-163-33260	HITZFELDER #4	PROPERTY DEVELOPMENT GROUP, INC.	DRILL	3,500
1997-10-28	469252	42-163-33259	BIEDIGER, FERDINAND #1020	OILEX INT'L INVESTMENTS, INC.	DRILL	3,500

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Source: Texas Railroad Commission drilling permit master (OGA049M), refreshed daily. See also operators in Frio County.