Zavala County Drilling Permits

Every permit issued by the Texas Railroad Commission in Zavala County — updated daily, data through 2026-07-10.

Zavala County permitting is running 3.3 permits a month over the trailing 90 days (10 total, versus 6 in the prior quarter). CML EXPLORATION, LLC leads with 7 permits in the past 12 months, one of 6 operators active in the county.

Last 30 Days

Operators (30d)

Latest Permit

2026-07-10

All Time

3,561

3,561 permits

ISSUED	PERMIT	API	LEASE	OPERATOR	TYPE	DEPTH	HZ
2011-02-04	709634	42-507-32779	FELPS #1H	STRAND ENERGY, L.C.	DRILL	6,000	Y
2011-02-04	709634	42-507-32779	FELPS #1H	STRAND ENERGY, L.C.	DRILL	6,000	Y
2011-01-31	709329	42-507-32778	ALPHA WARE #1	SANCHEZ OIL & GAS CORPORATION	DRILL	6,000	Y
2011-01-31	709329	42-507-32778	ALPHA WARE #1	SANCHEZ OIL & GAS CORPORATION	DRILL	6,000	Y
2011-01-31	709329	42-507-32778	ALPHA WARE #1	SANCHEZ OIL & GAS CORPORATION	DRILL	6,000	Y
2011-01-31	709329	42-507-32778	ALPHA WARE #1	SANCHEZ OIL & GAS CORPORATION	DRILL	6,000	Y
2011-01-27	708875	42-507-32777	VERHEUL C #1H	CHESAPEAKE OPERATING, INC.	DRILL	14,000	Y
2011-01-25	708555	42-507-32776	DAVID HOLDSWORTH #5	ALAMO OPERATING COMPANY, L. C.	DRILL	5,000
2011-01-21	708823	42-507-32775	PRYOR RANCH #2H	PETROHAWK OPERATING COMPANY	DRILL	5,500	Y
2011-01-21	708823	42-507-32775	PRYOR RANCH #2H	PETROHAWK OPERATING COMPANY	DRILL	5,500	Y
2011-01-20	708640	42-507-32172	WEST, G.W. #8	CRIMSON EXPLORATION OPER., INC.	RECOMP	4,700
2011-01-18	708507	42-507-32774	PRYOR RANCH #1H	PETROHAWK OPERATING COMPANY	DRILL	5,500	Y
2011-01-18	708507	42-507-32774	PRYOR RANCH #1H	PETROHAWK OPERATING COMPANY	DRILL	5,500	Y
2011-01-10	708008	42-507-32773	VERHEUL B #1H	CHESAPEAKE OPERATING, INC.	DRILL	14,000	Y
2010-12-28	707528	42-507-32772	WOODWARD A #1H	CHESAPEAKE OPERATING, INC.	DRILL	12,000	Y
2010-12-23	707424	42-507-32771	BYRD RANCH #1H	RILEY EXPLORATION, LLC	DRILL	7,500	Y
2010-12-23	707424	42-507-32771	BYRD RANCH #1H	RILEY EXPLORATION, LLC	DRILL	7,500	Y
2010-12-14	706828	42-507-32770	KIEFER, CHESTER #22	REGENCY ENERGY, INC.	DRILL	1,000
2010-12-01	705660	42-507-32769	K.M. RANCH #1H	CRIMSON EXPLORATION OPER., INC.	DRILL	6,300	Y
2010-12-01	705660	42-507-32769	K.M. RANCH #1H	CRIMSON EXPLORATION OPER., INC.	DRILL	6,550	Y
2010-11-29	705275	42-507-32767	CHITTIM #F 1H	SHELL WESTERN E&P	DRILL	5,200	Y
2010-11-29	705275	42-507-32767	CHITTIM #F 1H	SHELL WESTERN E&P	DRILL	10,250	Y
2010-11-24	705810	42-507-32768	VERHEUL UNIT A #1H	CHESAPEAKE OPERATING, INC.	DRILL	14,000	Y
2010-11-24	705810	42-507-32768	VERHEUL UNIT A #1H	CHESAPEAKE OPERATING, INC.	DRILL	14,000	Y
2010-11-16	705172	42-507-32766	JOE #1	CML EXPLORATION, LLC	DRILL	6,900	Y
2010-11-16	705172	42-507-32766	JOE #1	CML EXPLORATION, LLC	DRILL	6,900	Y
2010-10-14	703515	42-507-32765	PRYOR RANCH #1H	MCDAY ENERGY CORP.	DRILL	6,000	Y
2010-10-08	703304	42-507-32764	KIEFER, CHESTER #21	REGENCY ENERGY, INC.	DRILL	1,000
2010-10-01	702995	42-507-32763	CHAPARROSA 'D' #2H	PETROHAWK OPERATING COMPANY	DRILL	4,938	Y
2010-10-01	702995	42-507-32763	CHAPARROSA 'D' #2H	BPX OPERATING COMPANY	DRILL	5,149	Y
2010-10-01	702934	42-507-32762	FLORES 56 #101H	TEXAS AMERICAN RESOURCES COMPANY	DRILL	7,180	Y
2010-10-01	702907	42-507-32761	BUCHANAN, J. "A" 20 #101H	TEXAS AMERICAN RESOURCES COMPANY	DRILL	7,130	Y
2010-08-24	700938	42-507-32760	TRAYLOR NORTH #2H	CHESAPEAKE OPERATING, INC.	DRILL	15,000	Y
2010-07-28	698710	42-507-32759	MATTHEWS #1	DAWSEY OPERATING COMPANY	DRILL	7,000	Y
2010-07-28	698710	42-507-32759	MATTHEWS #1	DAWSEY OPERATING COMPANY	DRILL	6,500	Y
2010-07-28	698710	42-507-32759	MATTHEWS #1H	STRATEX OIL & GAS, INC.	DRILL	6,500	Y
2010-07-28	698710	42-507-32759	MATTHEWS #1H	STRATEX OIL & GAS HOLDINGS, INC.	DRILL	6,500	Y
2010-07-15	698843	42-507-32758	MURPHY #1	DAWSEY OPERATING COMPANY	DRILL	4,200	Y
2010-07-15	698843	42-507-32758	MURPHY #1	DAWSEY OPERATING COMPANY	DRILL	4,700	Y
2010-06-04	695501	42-507-31401	HOWETT #3	CIVRON PETROLEUM RES., LLC	RENTR	5,142
2010-04-21	694774	42-507-32757	ADDISON AVERY #1H	STRAND ENERGY, L.C.	DRILL	6,000	Y
2010-04-21	694774	42-507-32757	ADDISON AVERY #1H	STRAND ENERGY, L.C.	DRILL	6,000	Y
2010-04-21	694774	42-507-32757	ADDISON AVERY #1H	STRAND ENERGY, L.C.	DRILL	6,000	Y
2010-04-20	694687	42-507-32756	HOLDSWORTH - NELSON #1	STEPHENS PRODUCTION COMPANY	DRILL	6,500
2010-04-20	694687	42-507-32756	M. E. HOLDSWORTH NELSON TRUST #1	STEPHENS PRODUCTION COMPANY	DRILL	6,500	Y
2010-04-20	694687	42-507-32756	M. E. HOLDSWORTH NELSON TRUST #1	CHESAPEAKE OPERATING, INC.	DRILL	6,500	Y
2010-04-15	694336	42-507-32755	MUSTANG RANCH "C" #1H	PETROHAWK OPERATING COMPANY	DRILL	12,000	Y
2010-04-14	694268	42-507-31185	PRYOR RANCH #4	MCDAY ENERGY CORP.	RECOMP	9,000
2010-04-14	694068	42-507-32754	GLASSCOCK #1HE	WINN EXPLORATION CO., INC.	DRILL	12,000	Y
2010-04-13	694101	42-507-32753	GLASSCOCK #2HE	WINN EXPLORATION CO., INC.	DRILL	12,000	Y

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