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
2018-12-31	847148	42-507-33342	HOWETT ZAV #F 1H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2018-12-31	846949	42-507-33341	HOWETT ZAV #E 2H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2018-12-31	846649	42-507-33339	MARY ELLEN HOLDSWORTH #4	INLAND OCEAN, INC.	DRILL	4,200
2018-12-31	846216	42-507-33338	ANNA LOUISA #1	CML EXPLORATION, LLC	DRILL	7,300	Y
2018-12-18	847818	42-507-33191	WINTERBOTHAM ZAV #E 1H	EXCO OPERATING COMPANY, LP	DRILL	9,000	Y
2018-12-18	847818	42-507-33191	WINTERBOTHAM ZAV #E 1H	EXCO OPERATING COMPANY, LP	DRILL	9,000	Y
2018-11-20	846949	42-507-33341	HOWETT ZAV #E 2H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2018-09-30	844700	42-507-33337	KAY #1	CML EXPLORATION, LLC	DRILL	7,900	Y
2018-09-25	844700	42-507-33337	KLEIMANN #2	CML EXPLORATION, LLC	DRILL	7,900	Y
2018-09-07	844225	42-507-33335	J. BEELER #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2018-09-05	844049	42-507-33336	HOWETT ZAV #C 2H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2018-09-05	844049	42-507-33336	HOWETT ZAV #C 2H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2018-07-18	842306	42-507-33333	PICKENS-WEAVER #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2018-07-18	842306	42-507-33333	PICKENS-WEAVER #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2018-07-18	842306	42-507-33333	PICKENS-WEAVER #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2018-06-06	840104	42-507-33332	BUCK #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2018-05-29	840022	42-507-30935	B K JOHNSON #9	PATTERSON ENERGY CORPORATION	RECOMP	2,000
2018-05-25	840373	42-507-33331	PALM #1	CML EXPLORATION, LLC	DRILL	7,500	Y
2018-05-03	839541	42-507-33328	N BAUERLE A UNIT #3H	AGERON ENERGY, LLC	DRILL	6,350	Y
2018-05-03	839523	42-507-33329	N BAUERLE A UNIT #2H	AGERON ENERGY, LLC	DRILL	6,350	Y
2018-05-03	839521	42-507-33327	N BAUERLE A UNIT #1H	AGERON ENERGY, LLC	DRILL	6,350	Y
2018-04-26	839181	42-507-33326	WHITTINGTON #1	CML EXPLORATION, LLC	DRILL	7,100	Y
2018-04-11	836741	42-507-33322	NORMA JEANNE #01HX	SN OPERATING, LLC	DRILL	7,000	Y
2018-03-27	837904	42-507-33325	JANIE #1	CML EXPLORATION, LLC	DRILL	7,600	Y
2018-03-05	836743	42-507-33324	NORMA JEANNE #01HZ	SN OPERATING, LLC	DRILL	7,000	Y
2018-03-05	836742	42-507-33323	NORMA JEANNE #01HY	SN OPERATING, LLC	DRILL	7,000	Y
2018-02-13	836264	42-507-32660	ADA HAMMOND HEIRS #1	CARIBBEAN ENERGY, L.L.C.	RECOMP	3,150
2018-02-01	835772	42-507-33321	JOSEPH #1	CML EXPLORATION, LLC	DRILL	7,600	Y
2018-02-01	835772	42-507-33321	JOSEPH #1	CML EXPLORATION, LLC	DRILL	7,600	Y
2018-01-24	834937	42-507-33320	LLM NORTH #A 2EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2018-01-24	834935	42-507-33319	LLM NORTH #A 1EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2018-01-23	835054	42-507-33318	HEITZ #1	CML EXPLORATION, LLC	DRILL	7,600	Y
2018-01-10	834806	42-507-33317	KILEY #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2018-01-10	834806	42-507-33317	KILEY #1	CML EXPLORATION, LLC	DRILL	7,400	Y
2017-12-27	834555	42-507-33316	FERGUSON-MCKNIGHT #2812H	EL TORO RESOURCES LLC	DRILL	5,450	Y
2017-12-15	833940	42-507-33315	LLM SOUTH B UNIT #2EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-14	833929	42-507-33314	LLM SOUTH B UNIT #1EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-14	833928	42-507-33313	LLM SOUTH #C 2EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-14	833927	42-507-33312	LLM SOUTH #C 1EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-13	833757	42-507-33311	WINTERBOTHAM ZAV #M 2H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2017-12-13	833757	42-507-33311	WINTERBOTHAM ZAV #M 2H	EXCO OPERATING COMPANY, LP	DRILL	7,000	Y
2017-12-07	833701	42-507-33310	SOLA VACA NORTE #A 4EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-07	833701	42-507-33310	SOLA VACA NORTE #A 4EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-07	833701	42-507-33310	SOLA VACA NORTE #A 4EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	6,000	Y
2017-12-07	833701	42-507-33310	SOLA VACA NORTE #A 4EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	5,416	Y
2017-12-07	833700	42-507-33309	SOLA VACA NORTE #A 3EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-07	833700	42-507-33309	SOLA VACA NORTE #A 3EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y
2017-12-07	833700	42-507-33309	SOLA VACA NORTE #A 3EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	6,000	Y
2017-12-07	833700	42-507-33309	SOLA VACA NORTE #A 3EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	5,360	Y
2017-12-07	833698	42-507-33308	SOLA VACA NORTE #A 2EF	U.S. ENERGY DEVELOPMENT CORP	DRILL	9,000	Y

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