← Zavala County

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

1

Operators (30d)

1

Latest Permit

2026-07-10

All Time

3,561

3,561 permits
ISSUEDPERMITAPILEASEOPERATORTYPEDEPTHHZ
1982-09-0917151942-507-31755MATTHEWS #1413BOMMER ENGINEERING CO.DRILL3,500
1982-09-0917134642-507-31743PRYOR-BRANSCOME "G" #1MATZINGER PETROLEUM CODRILL1,785
1982-09-0317090142-507-31742LYLES RANCH #12ROME EXPLORATION CO, INC.DRILL1,000
1982-09-0317089742-507-31752MATHEWS, R. #12-1SUNDOWN ENERGY CO. INCDRILL3,500
1982-09-0317089542-507-31751MATHEWS, R. #11-12SUNDOWN ENERGY CO. INCDRILL3,500
1982-09-0317089242-507-31750MATHEWS, R. #13-6SUNDOWN ENERGY COMPANY,INC.DRILL3,500
1982-09-0317089042-507-31749R. MATHEWS #10-16SUNDOWN ENERGY COMPANY,INC.DRILL4,000
1982-09-0317087742-507-31748PRYOR-BRANSCOME "H" #1MATZINGER PETROLEUM CODRILL1,700
1982-09-0317087442-507-31747PRYOR-BRANSCOME #1MATZINGER PETROLEUM CODRILL1,800
1982-09-0317086742-507-31746PRYOR-BRANSCOME "H" #2MATZINGER PETROLEUM CODRILL1,700
1982-09-0317086542-507-31745PRYOR-BRANSCOME "B" #1MATZINGER PETROLEUM CODRILL1,350
1982-09-0217082342-507-31744PRYOR RANCH #99WINN EXPLORATION/DULCE COMPANYDRILL3,185
1982-08-3117107142-507-31754MATHEWS, R. #10-16SUNDOWN ENERGY COMPANY,INC.DRILL4,000
1982-08-3017361642-507-31767BYRNE, J.A. #1TRIGG DRILLING CO., INC.DRILL4,900
1982-08-2617026742-507-31531HAMMOND, ADA E. 'A' #5-ARETAMA OIL CORPORATIONRECOMP3,460
1982-08-2517207842-507-31771PRYOR RANCH #97WINN EXPLORATION/DULCE COMPANYDRILL3,150
1982-08-2417207742-507-31770PRYOR RANCH #95WINN EXPLORATION/DULCE COMPANYDRILL3,500
1982-08-2416999842-507-31742LYLES RANCH #12ROME EXPLORATION CO, INC.DRILL1,000
1982-08-1716949142-507-31741THOREEN, GEORGE ET AL #5JENNINGS EXPLORATION CO.DRILL4,150
1982-08-1716946942-507-31740CARDWELL #03MINUTEMEN CONSULTANTS INC.DRILL5,000
1982-08-1016895342-507-31738PRYOR RANCH #93WINN EXPLORATION/DULCE COMPANYDRILL3,070
1982-08-0916971442-507-31739CROSS -S- RANCH SUBDIVISION #120-2HAJECATE OIL COMPANYDRILL4,500
1982-08-0616889842-507-31736ATWOOD, KIRBY "A" #1GLENCO OIL & GAS COMPANYDRILL3,456
1982-08-0616848742-507-31737MATHEWS, R. #5-20SUNDOWN ENERGY COMPANY,INC.DRILL3,500
1982-08-0416849242-507-31715CARTER WILTGEN #1COKER-EASTON ENTERPRISES, INC.DRILL4,400
1982-08-0416822942-507-31735KIEFER, CHESTER #1ROME EXPLORATION CO, INC.DRILL1,800
1982-08-0416822942-507-31735KIEFER, CHESTER #1ROME EXPLORATION CO, INC.DRILL1,800
1982-08-0416821742-507-31733MATHEWS, R. #7-10SUNDOWN ENERGY COMPANY,INC.DRILL3,500
1982-08-0416821542-507-31732MATHEWS, R. #8-9SUNDOWN ENERGY COMPANY,INC.DRILL3,500
1982-08-0216822042-507-31734MATHEWS, R. #9-16SUNDOWN ENERGY COMPANY,INC.DRILL3,500
1982-08-0216790542-507-31731PRYOR RANCH #87WINN EXPLORATION/DULCE COMPANYDRILL3,100
1982-08-0216790442-507-31730PRYOR RANCH #85WINN EXPLORATION/DULCE COMPANYDRILL3,500
1982-08-0216790342-507-31729PRYOR RANCH #91WINN EXPLORATION/DULCE COMPANYDRILL3,095
1982-07-2016674242-507-31727LAFFERRE #02MWJ PRODUCING COMPANYDRILL3,200
1982-07-2016673142-507-31726PRYOR RANCH #85WINN EXPLORATION/DULCE COMPANYDRILL3,163
1982-07-1616674842-507-31728PRYOR RANCH #90WINN EXPLORATION/DULCE COMPANYDRILL3,255
1982-07-1516664342-507-31725PRYOR RANCH #86WINN EXPLORATION/DULCE COMPANYDRILL3,230
1982-07-1516664242-507-31724PRYOR RANCH #89WINN EXPLORATION/DULCE COMPANYDRILL2,150
1982-07-1516664142-507-31723PRYOR RANCH #83WINN EXPLORATION/DULCE COMPANYDRILL3,260
1982-07-1516633042-507-31722PRYOR RANCH #88WINN EXPLORATION/DULCE COMPANYDRILL3,290
1982-07-1416621542-507-31011KIEFER, CHESTER -D- #1HUGHES & HUGHESRECOMP3,240
1982-07-1316624742-507-31721MATTHEWS #6013BOMMER ENGINEERING CO.DRILL4,500
1982-07-0716602742-507-31720PRYOR RANCH #81WINN EXPLORATION/DULCE COMPANYDRILL3,324
1982-07-0716580442-507-31719KRAWETZ 18 #1DRIVER INVESTMENTS, INC.DRILL7,500
1982-07-0616573342-507-31185PRYOR RANCH #4WINN EXPLORATION/DULCE COMPANYRECOMP3,122
1982-07-0216554842-507-31718WINSHIP GAS UNIT #1MUELLER ENGINEERING CORP.DRILL3,000
1982-07-0116529142-507-31717LYLES, G.W. #5EXXON CORP.DRILL1,650
1982-06-3016521542-507-31716PRYOR RANCH #79WINN EXPLORATION/DULCE COMPANYDRILL2,936
1982-06-1816420342-507-31714HAGAN #2SOTEX OIL & GAS CORP.DRILL6,000
1982-06-1616393842-507-31713MATHEWS, R. #4-13SUNDOWN ENERGY CO. INCDRILL3,500
page 53 of 72
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Source: Texas Railroad Commission drilling permit master (OGA049M), refreshed daily. See also operators in Zavala County.