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
2012-03-22	735679	42-507-32880	HOWETT ZAV #D 1H	CHESAPEAKE OPERATING, INC.	DRILL	12,000	Y
2012-03-22	735634	42-507-32879	WINTERBOTHAM ZAV #M 5H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-20	735587	42-507-32877	CROSS S #1	CML EXPLORATION, LLC	DRILL	6,500	Y
2012-03-20	735587	42-507-32877	CROSS S #1	CML EXPLORATION, LLC	DRILL	6,500	Y
2012-03-20	735587	42-507-32877	CROSS S #1	CML EXPLORATION, LLC	DRILL	6,500	Y
2012-03-20	735560	42-507-32878	RANCHO RINCON #1	STRAND ENERGY, L.C.	DRILL	5,900
2012-03-16	735177	42-507-32876	PETERS UNIT B ZAV #A 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-14	735170	42-507-32875	LANG #1H	HUGHES, DAN A. COMPANY, L.P.	DRILL	13,200	Y
2012-03-14	735170	42-507-32875	LANG #1H	U.S. ENERCORP, LTD.	DRILL	7,202	Y
2012-03-06	734473	42-507-32874	HOWETT ZAV #E 4H	CHESAPEAKE OPERATING, INC.	DRILL	12,000	Y
2012-03-06	734473	42-507-32874	HOWETT ZAV #E 4H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-06	734449	42-507-32873	HOWETT ZAV #E 1H	CHESAPEAKE OPERATING, INC.	DRILL	12,000	Y
2012-03-06	734449	42-507-32873	HOWETT ZAV #E 1H	CHESAPEAKE OPERATING, INC.	DRILL	12,000	Y
2012-03-02	734310	42-507-32872	PETRO PARDS #1H	SANCHEZ OIL & GAS CORPORATION	DRILL	6,500	Y
2012-03-02	734310	42-507-32872	PETRO PARDS #1H	SANCHEZ OIL & GAS CORPORATION	DRILL	6,500	Y
2012-03-02	734247	42-507-32871	KM NORTH ZAV #A 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-03-01	734144	42-507-32870	PETERS UNIT ZAV #A 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-02-28	734030	42-507-32869	KM NORTH ZAV #A 5H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-02-16	733196	42-507-32867	WINTERBOTHAM ZAV #M 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-02-16	732605	42-507-32868	MURPHY #3	DAWSEY OPERATING COMPANY	DRILL	4,100
2012-02-10	733181	42-507-32866	RAY #1H	SANCHEZ OIL & GAS CORPORATION	DRILL	7,190	Y
2012-02-10	733181	42-507-32866	RAY #1H	SANCHEZ OIL & GAS CORPORATION	DRILL	7,190	Y
2012-02-10	732913	42-507-32865	PICKENS ZAV #F 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-02-10	732900	42-507-32864	HEITZ #2H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-02-10	732900	42-507-32864	HEITZ 303 #2H	HUGHES, DAN A. COMPANY, L.P.	DRILL	12,500	Y
2012-02-07	732606	42-507-32863	MARGUERITE #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2012-02-07	732606	42-507-32863	MARGUERITE #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2012-02-07	732606	42-507-32863	MARGUERITE #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2012-02-01	732119	42-507-32862	HOWETT #5	TEXRON OPERATING, LLC	DRILL	5,200
2012-02-01	732119	42-507-32862	TEXRON - HOWETT #5	TEXRON OPERATING, LLC	DRILL	5,200
2012-01-12	731136	42-507-32861	TEAGUE UNIT B ZAV #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-01-12	731136	42-507-32861	TEAGUE UNIT B ZAV #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-01-12	731136	42-507-32861	TEAGUE UNIT B ZAV #1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2012-01-06	730910	42-507-32860	TRAYLOR SOUTH ZAV #J 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-12-28	730519	42-507-32859	TRAYLOR NORTH #I 5H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-12-27	730499	42-507-32858	TRAYLOR NORTH #I 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-12-27	730499	42-507-32858	TRAYLOR NORTH #I 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-12-23	730218	42-507-32857	PRYOR RANCH #3A	MCDAY ENERGY CORP.	DRILL	6,000
2011-12-23	730218	42-507-32857	PRYOR RANCH #3A	MCDAY ENERGY CORP.	DRILL	6,000
2011-12-20	730122	42-507-32856	CHAPARROSA F #1V	ESPADA OPERATING LLC	DRILL	8,500
2011-12-19	729941	42-507-32855	TRAYLOR SOUTH ZAV #A 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-12-19	729941	42-507-32855	TRAYLOR SOUTH ZAV #A 3H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-12-14	729692	42-507-32854	KEIFER, CHESTER -A- #36	BOLLINGER DRILLING CO.	DRILL	1,000
2011-11-19	728436	42-507-32853	WOODWARD #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2011-11-19	728436	42-507-32853	WOODWARD #1	CML EXPLORATION, LLC	DRILL	7,000	Y
2011-11-18	728381	42-507-32852	TRAYLOR SOUTH ZAV #C 5H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-11-17	728190	42-507-32851	TRAYLOR SOUTH ZAV #I 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-11-15	728080	42-507-32850	TRAYLOR SOUTH ZAV #H 1H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-11-10	727966	42-507-32849	TRAYLOR NORTH #D 2H	CHESAPEAKE OPERATING, INC.	DRILL	9,000	Y
2011-11-10	727964	42-507-32848	TRAYLOR NORTH #D 5H	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.