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
2012-06-29	743259	42-507-32917	PRYOR RANCH #6A	MCDAY ENERGY CORP.	DRILL	6,000
2012-06-27	743150	42-507-32915	TRAYLOR UNIT ZAV K #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-06-25	743055	42-507-32914	HOLDSWORTH NELSON TRUST ZAV #A 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-06-22	742854	42-507-32913	HOWETT UNIT B ZAV #G 4H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-06-13	741352	42-507-32910	ROSS C. WATKINS #1	NAILS OPERATING COMPANY LLC	DRILL	4,000
2012-06-12	741965	42-507-32911	PRYOR RANCH #5A	MCDAY ENERGY CORP.	DRILL	6,000
2012-06-11	741810	42-507-32908	WINTERBOTHAM ZAV #B 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-06-09	741855	42-507-32909	TRAYLOR SOUTH ZAV #B 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-06-09	741855	42-507-32909	TRAYLOR SOUTH ZAV #B 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-05-31	741161	42-507-32906	HOLDSWORTH, DAVID #7	ALAMO OPERATING COMPANY, L. C.	DRILL	5,000
2012-05-25	741160	42-507-32907	GRISSOM #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2012-05-25	741160	42-507-32907	GRISSOM #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2012-05-25	740888	42-507-32905	BAYOU ROUGE UNIT G ZAV #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-05-21	740470	42-507-32904	TRAYLOR SOUTH ZAV #B 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-05-21	740470	42-507-32904	TRAYLOR SOUTH ZAV #B 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-05-21	740470	42-507-32904	TRAYLOR SOUTH ZAV #B 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-05-18	740247	42-507-32903	GLASSCOCK RANCH #3H	MATADOR PRODUCTION COMPANY	DRILL	10,000	Y
2012-05-18	738738	42-507-32902	KIEFER, CHESTER #24	REGENCY ENERGY, INC.	DRILL	1,000
2012-05-17	740064	42-507-32901	FLOWER #1	CML EXPLORATION, LLC	DRILL	6,700	Y
2012-05-17	740064	42-507-32901	FLOWER #1	CML EXPLORATION, LLC	DRILL	6,700	Y
2012-05-08	739714	42-507-32900	MARK & SANDRA UNIT #2H	SANCHEZ OIL & GAS CORPORATION	DRILL	6,800	Y
2012-05-02	738669	42-507-32899	GOODWIN #1V	SANCHEZ OIL & GAS CORPORATION	DRILL	8,000
2012-05-02	738669	42-507-32899	GOODWIN #1V	SANCHEZ OIL & GAS CORPORATION	DRILL	8,000
2012-04-21	737896	42-507-32898	HEITZ 302 #5H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-04-21	737896	42-507-32898	HEITZ 302 #5H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-04-21	737896	42-507-32898	HEITZ 302 #5H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-04-21	737766	42-507-32897	PETRO PARDS #2H	SANCHEZ OIL & GAS CORPORATION	DRILL	6,500	Y
2012-04-18	737449	42-507-32896	MATTHEWS #4H	DAWSEY OPERATING COMPANY	DRILL	5,100	Y
2012-04-18	737376	42-507-32895	WINTERBOTHAM ZAV #O 5H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-18	737372	42-507-32894	WINTERBOTHAM ZAV #O 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-18	737368	42-507-32893	WINTERBOTHAM ZAV #D 4H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-18	737368	42-507-32893	WINTERBOTHAM ZAV #D 4H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-18	737364	42-507-32892	WINTERBOTHAM ZAV #D 2H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-18	737364	42-507-32892	WINTERBOTHAM ZAV #D 2H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-13	737172	42-507-32891	HOLDSWORTH HOMESTEAD ZAV #A 4H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-12	737035	42-507-32890	GLASSCOCK RANCH #2H	MATADOR PRODUCTION COMPANY	DRILL	12,000	Y
2012-04-05	736749	42-507-32889	HOLDSWORTH HOMESTEAD ZAV A #A 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-04-04	736360	42-507-32886	KRAWETZ RANCH A UNIT #A 1H	HESS CORPORATION	DRILL	6,810	Y
2012-04-04	735728	42-507-32788	CHAPARROSA E #1	PETROHAWK OPERATING COMPANY	RECOMP	6,000
2012-04-03	736515	42-507-32888	HEITZ 302 #3H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-04-03	736515	42-507-32888	HEITZ 302 #3H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-04-03	736515	42-507-32888	HEITZ 302 #3H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-04-03	736515	42-507-32888	HEITZ 302 #3H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-03-28	736378	42-507-32887	GLASSCOCK RANCH #1H	MATADOR PRODUCTION COMPANY	DRILL	10,000	Y
2012-03-28	736192	42-507-32885	HOWETT ZAV #F 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-24	735849	42-507-32883	RICHTER UNIT B ZAV #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-24	735849	42-507-32883	RICHTER UNIT B ZAV #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-23	735639	42-507-32884	PRYOR RANCH #4A	MCDAY ENERGY CORP.	DRILL	6,000
2012-03-22	735683	42-507-32882	HOWETT ZAV #C 4H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-22	735682	42-507-32881	HOWETT ZAV #C 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y

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