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
| ISSUED | PERMIT | API | LEASE | OPERATOR | TYPE | DEPTH | HZ |
|---|---|---|---|---|---|---|---|
| 1992-01-27 | 395550 | 42-507-32445 | DEL MONTE #1 | AV-TECH RESOURCES CORPORATION | DRILL | 6,400 | Y |
| 1992-01-24 | 396169 | 42-507-30928 | LASATER, M. L. #12 | ORYX ENERGY COMPANY | RECOMP | 8,243 | Y |
| 1992-01-24 | 396166 | 42-507-32444 | BRISCOE-PETTY #5 | UNION PACIFIC RESOURCES COMPANY | DRILL | 11,500 | Y |
| 1992-01-24 | 396166 | 42-507-32444 | BRISCOE-PETTY #5 | UNION PACIFIC RESOURCES COMPANY | DRILL | 11,500 | Y |
| 1992-01-23 | 396015 | 42-507-32443 | DAY, R.B. #2 | ORYX ENERGY COMPANY | DRILL | 9,309 | Y |
| 1992-01-23 | 396015 | 42-507-32443 | DAY, R.B. #2 | ORYX ENERGY COMPANY | DRILL | 9,309 | Y |
| 1992-01-17 | 395969 | 42-507-32442 | HALEY, C. R. #2 | ORYX ENERGY COMPANY | DRILL | 6,305 | Y |
| 1992-01-17 | 395969 | 42-507-32442 | HALEY, C. R. #2 | ORYX ENERGY COMPANY | DRILL | 6,300 | Y |
| 1992-01-07 | 395651 | 42-507-32441 | BOOTH, L. W. #3 | ORYX ENERGY COMPANY | DRILL | 6,670 | Y |
| 1992-01-03 | 395570 | 42-507-32440 | LEE RANCH #1 | TEXAS SOUTHERN RESOURCES, INC. | DRILL | 1,500 | |
| 1991-12-30 | 395502 | 42-507-32439 | PONDER-LASITER UNIT #1 | ORYX ENERGY COMPANY | DRILL | 6,540 | Y |
| 1991-12-30 | 395502 | 42-507-32439 | PONDER-LASITER UNIT #1 | ORYX ENERGY COMPANY | DRILL | 6,482 | Y |
| 1991-12-23 | 395337 | 42-507-32438 | BAGGETT, ET AL UNIT #1 | ORYX ENERGY COMPANY | DRILL | 6,552 | Y |
| 1991-12-20 | 393986 | 42-507-32432 | MATTHEWS MINERAL ACCOUNT #2011 | UVALDE ENERGY CO. | DRILL | 2,000 | |
| 1991-12-20 | 393899 | 42-507-32431 | MATTHEWS MINERAL ACCOUNT #1011 | UVALDE ENERGY CO. | DRILL | 2,000 | |
| 1991-12-19 | 395280 | 42-507-32437 | LASATER, M. L. #10 | ORYX ENERGY COMPANY | DRILL | 6,932 | Y |
| 1991-12-17 | 395179 | 42-507-32436 | MILBY #3 | GENESIS PRODUCING COMPANY | DRILL | 2,500 | |
| 1991-12-05 | 394657 | 42-507-32435 | MILBY #2 | GENESIS PRODUCING COMPANY | DRILL | 2,500 | |
| 1991-12-05 | 394657 | 42-507-32435 | MILBY #2 | GENESIS PRODUCING COMPANY | DRILL | 2,500 | |
| 1991-11-27 | 394547 | 42-507-32434 | MILBY #1 | GENESIS PRODUCING COMPANY | DRILL | 2,500 | |
| 1991-11-22 | 394358 | 42-507-32262 | HARDY #12 | CHRISTICO PETROLEUM COMPANY | RECOMP | 9,600 | Y |
| 1991-11-21 | 394135 | 42-507-32433 | ADA HAMMOND AB UNIT #1 | KILLAM OIL COMPANY | DRILL | 4,000 | |
| 1991-10-21 | 393109 | 42-507-32430 | GLASSCOCK, LETA #1D | WINN EXPLORATION CO., INC. | DRILL | 4,900 | |
| 1991-10-17 | 393002 | 42-507-32318 | GREGG, R. M. UNIT #1 | ORYX ENERGY COMPANY | RECOMP | 6,441 | Y |
| 1991-10-16 | 392904 | 42-507-32429 | BRISCOE RANCH #1030 | SPILLER, ROBERT S. | DRILL | 1,800 | |
| 1991-10-14 | 391869 | 42-507-32427 | RAINE, J.R. #6 #6 | BRIDGER OIL INC. | DRILL | 4,000 | |
| 1991-10-14 | 391869 | 42-507-32427 | RAINE, J.R. #6 #6 | BRIDGER OIL INC. | DRILL | 4,000 | |
| 1991-10-11 | 392834 | 42-507-32428 | BLALOCK ET AL UNIT #1 | ORYX ENERGY COMPANY | DRILL | 6,544 | Y |
| 1991-10-11 | 392834 | 42-507-32428 | BLALOCK ET AL UNIT #1 | ORYX ENERGY COMPANY | DRILL | 6,070 | Y |
| 1991-10-11 | 392834 | 42-507-32428 | BLALACK ET. AL. UNIT #1 | ORYX ENERGY COMPANY | DRILL | 6,560 | Y |
| 1991-09-25 | 392243 | 42-507-32426 | BARTLETT, E. C. ESTATE #1 | ESENJAY PETROLEUM CORP. | DRILL | 3,900 | |
| 1991-09-23 | 392103 | 42-507-32425 | LITTLE #1 | LANDRESS, ROGER D. | DRILL | 5,000 | |
| 1991-09-20 | 392103 | 42-507-32425 | LITTLE #1 | LANDRESS, ROGER D. | DRILL | 5,000 | |
| 1991-08-30 | 391487 | 42-507-30422 | LASATER, M.L. #11 | ORYX ENERGY COMPANY | RECOMP | 8,850 | Y |
| 1991-08-29 | 391330 | 42-507-32424 | LITTLE #1 | RIO-TEX, INC. | DRILL | 6,300 | Y |
| 1991-08-29 | 391330 | 42-507-32424 | LITTLE #1 | RIO-TEX, INC. | DRILL | 6,300 | Y |
| 1991-08-08 | 390679 | 42-507-32423 | JONSSON-PERLITZ "A" #4 | KEY PRODUCTION CO. | DRILL | 4,385 | Y |
| 1991-08-07 | 390546 | 42-507-00515 | NORTON, RICHARD W. JR. #6 | NORTON OIL COMPANY, INC. | RECOMP | 3,388 | |
| 1991-08-07 | 390546 | 42-507-00515 | NORTON, RICHARD W. JR. #6 | NORTON OIL COMPANY, INC. | RECOMP | 3,388 | |
| 1991-07-19 | 390104 | 42-507-32422 | JONES, E. B. #4 | ORYX ENERGY COMPANY | DRILL | 10,100 | Y |
| 1991-07-03 | 389571 | 42-507-32301 | FEHRENBACH #1 | DANTEX OIL & GAS, INC. | DRILL | 6,550 | Y |
| 1991-06-28 | 389196 | 42-507-32421 | ANDERSON RANCH #1 | QUATRO OIL AND GAS, INC. | DRILL | 1,300 | |
| 1991-06-28 | 389099 | 42-507-32420 | BRISCOE RANCH #2031 | SPILLER, ROBERT S. | DRILL | 1,800 | |
| 1991-06-19 | 389092 | 42-507-32419 | HEITZ, B. M. #3 | ORYX ENERGY COMPANY | DRILL | 10,000 | Y |
| 1991-06-07 | 388753 | 42-507-32418 | JONES, E. B. -A- #2 | ORYX ENERGY COMPANY | DRILL | 13,500 | Y |
| 1991-05-31 | 388508 | 42-507-32417 | LASATER, M. L. UNIT #1 | ORYX ENERGY COMPANY | DRILL | 10,650 | Y |
| 1991-05-30 | 388454 | 42-507-32416 | LASATER, M. L. #8 | ORYX ENERGY COMPANY | DRILL | 10,650 | Y |
| 1991-05-29 | 388386 | 42-507-30956 | EARNEST, W. A. #3004H | CITATION OIL & GAS CORP. | RECOMP | 6,750 | Y |
| 1991-05-23 | 388272 | 42-507-32415 | BARNHART CO.-HARRY F. THOMPSON #5021H | BERENERGY CORPORATION | DRILL | 12,000 | Y |
| 1991-05-23 | 388272 | 42-507-32415 | BARNHART CO.-HARRY F. THOMPSON #5021H | BERENERGY CORPORATION | DRILL | 6,600 | Y |
Source: Texas Railroad Commission drilling permit master (OGA049M), refreshed daily. See also operators in Zavala County.