Saltwater Disposal Wells in Cochran County
Complete UIC injection & disposal well inventory from RRC permits, with reported H-10 volumes.
Active Wells
956
Permitted Capacity
1.2M bbl/d
Injected 12mo (thru 2025-06)
30.7M bbl
UIC Permits All Time
2,112
| STATUS | LEASE / WELL | API | OPERATOR | TYPE | PERMITTED BBL/D | INJECTED 12MO | ZONE (FT) |
|---|---|---|---|---|---|---|---|
| Active | MASTEN, F. O. "B" #7 | 42-079-32721 | EXTEX OPER CO | Injection | 300 | -- | 4,800–5,200 |
| Active | WEST LEVELLAND UNIT #121AW | 42-079-32537 | HILCORP ENGY CO | Injection | 300 | -- | 4,700–5,000 |
| Active | WEST LEVELLAND UNIT #21W | 42-079-01209 | HILCORP ENGY CO | Injection | 300 | -- | 4,300–4,879 |
| Active | MASTEN "C" #6 | 42-079-32902 | EXTEX OPER CO | Injection | 300 | -- | 4,800–5,200 |
| Active | WEST LEVELLAND UNIT #295W | 42-079-32388 | HILCORP ENGY CO | Injection | 300 | -- | 4,750–5,000 |
| Active | SOUTHWEST LEVELLAND UNIT #21W | 42-079-30102 | HILCORP ENGY CO | Injection | 300 | -- | 4,863–5,000 |
| Active | MASTEN, F. O. #5 | 42-079-30823 | CROSS TIMBERS ENGY, LLC | Injection | 300 | -- | 4,974–5,066 |
| Active | NORTH-WRIGHT #B 17 | 42-079-31724 | WALKABOUT OPER, LLC | Injection | 300 | -- | 4,844–4,874 |
| Active | MASTEN, F. O "H" #13 | 42-079-32705 | EXTEX OPER CO | Injection | 300 | -- | 4,800–5,200 |
| Active | WEST LEVELLAND UNIT #349W | 42-079-32408 | HILCORP ENGY CO | Injection | 300 | -- | 4,750–5,000 |
| Active | WEST LEVELLAND UNIT #151W | 42-079-00452 | HILCORP ENGY CO | Injection | 300 | -- | 4,650–5,000 |
| Active | STANTON, JOE L. TRUSTEE #2 | 42-079-02145 | EXTEX OPER CO | Injection | 300 | -- | 4,800–5,200 |
| Active | MASTEN, F. O. #4 | 42-079-30816 | CROSS TIMBERS ENGY, LLC | Injection | 300 | -- | 4,952–5,052 |
| Active | WEST LEVELLAND UNIT #287W | 42-079-32418 | HILCORP ENGY CO | Injection | 300 | -- | 4,750–5,000 |
| Active | WEST LEVELLAND UNIT #242W | 42-079-32360 | HILCORP ENGY CO | Injection | 300 | -- | 4,750–5,000 |
| Active | WEST LEVELLAND UNIT #334W | 42-079-32411 | HILCORP ENGY CO | Injection | 300 | -- | 4,750–5,000 |
| Active | STARNES UNIT #1105 | 42-079-00346 | AVIATOR ENERGY, LLC | Injection | 250 | -- | 4,945–5,027 |
| Active | STARNES UNIT #1103 | 42-079-00352 | AVIATOR ENERGY, LLC | Injection | 250 | -- | 4,940–5,017 |
| Active | MORTON UNIT #0605W | 42-079-31695 | A.C.T. OPER CO | Injection | 250 | -- | 4,821–4,857 |
| Active | WHITEFACE UNIT #71W | 42-079-01640 | DOUBLE BARREL OIL LLC | Injection | 250 | -- | 4,911–4,965 |
| Active | WEST LEVELLAND UNIT #135W | 42-079-00905 | HILCORP ENGY CO | Injection | 250 | -- | 4,782–4,908 |
| Active | WHITEFACE UNIT #31W | 42-079-00548 | DOUBLE BARREL OIL LLC | Injection | 250 | -- | 4,884–4,906 |
| Active | WEST LEVELLAND UNIT #95W | 42-079-01571 | HILCORP ENGY CO | Injection | 250 | -- | 4,780–4,905 |
| Active | SOUTHWEST LEVELLAND UNIT #11W | 42-079-30101 | HILCORP ENGY CO | Injection | 250 | -- | 4,900–5,000 |
| Active | STARNES UNIT #1707 | 42-079-01692 | AVIATOR ENERGY, LLC | Injection | 250 | -- | 4,948–5,035 |
| Active | STARNES UNIT #1709 | 42-079-00344 | AVIATOR ENERGY, LLC | Injection | 250 | -- | 4,955–5,033 |
| Active | SOUTHWEST LEVELLAND UNIT #49W | 42-079-02557 | HILCORP ENGY CO | Injection | 250 | -- | 4,890–5,020 |
| Active | DEAN UNIT "B" #62W | 42-079-10023 | VISION OIL AND GAS LLC | Injection | 200 | -- | 5,059–5,069 |
| Active | STARNES UNIT #1106W | 42-079-00349 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 4,988–5,018 |
| Active | STARNES UNIT #2206W | 42-079-00944 | AVIATOR ENERGY, LLC | UIC | 200 | -- | 5,043–5,064 |
| Active | STARNES UNIT #1116W | 42-079-02561 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 4,999–5,040 |
| Active | STARNES UNIT #506W | 42-079-00964 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 5,015–5,065 |
| Active | STARNES UNIT #1114W | 42-079-30072 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 5,015–5,043 |
| Active | STARNES UNIT #1714W | 42-079-00920 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 5,008–5,043 |
| Active | STARNES UNIT #512W | 42-079-02485 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 4,927–5,074 |
| Active | LEAGUE 91 PROJECT #4013 | 42-079-31499 | VISION OIL AND GAS LLC | Injection | 200 | -- | 5,070–5,100 |
| Active | STARNES UNIT #1006W | 42-079-00938 | AVIATOR ENERGY, LLC | UIC | 200 | -- | 5,037–5,073 |
| Active | STARNES UNIT #1102W | 42-079-00355 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 5,000–5,045 |
| Active | STARNES UNIT #1604W | 42-079-00917 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 5,007–5,045 |
| Active | STARNES UNIT #504W | 42-079-00959 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 4,988–5,030 |
| Active | STARNES UNIT #516W | 42-079-02480 | AVIATOR ENERGY, LLC | Injection | 200 | -- | 5,018–5,060 |
| Active | STARNES UNIT #2312W | 42-079-00928 | AVIATOR ENERGY, LLC | UIC | 200 | -- | 5,022–5,060 |
| Active | STARNES UNIT #2802W | 42-079-02164 | AVIATOR ENERGY, LLC | UIC | 200 | -- | 5,026–5,080 |
| Active | WEST LEVELLAND UNIT #28W | 42-079-01557 | HILCORP ENGY CO | Injection | 175 | -- | 4,844–4,891 |
| Active | DUGGAN SLAUGHTER UNIT #491BW | 42-079-00690 | CROSS TIMBERS ENGY, LLC | Injection | 0 | -- | -- |
| Active | WRIGHT UNIT #720AW | 42-079-31965 | EXTEX OPER CO | Injection | 0 | -- | 4,900 |
| Active | SOUTHWEST LEVELLAND UNIT #89 | 42-079-00882 | HILCORP ENGY CO | Injection | 0 | -- | -- |
| Active | WRIGHT, J.M. UNIT #45 | 42-079-30820 | A.C.T. OPER CO | Injection | 0 | -- | -- |
| Active | NORTH-WRIGHT #E 3 | 42-079-01236 | WALKABOUT OPER, LLC | Injection | 0 | -- | 4,845–4,893 |
| Active | DUGGAN SLAUGHTER UNIT #192BW | 42-079-32051 | CROSS TIMBERS ENGY, LLC | Injection | 0 | -- | 5,044 |
| Active | WALKER OIL UNIT "C" #1W | 42-079-30433 | LOS HIJOS DE SANCHEZ J LLC | Injection | 10,000 | -- | 4,673–11,900 |
| Active | WALKER #1 | 42-079-32032 | LOS HIJOS DE SANCHEZ J LLC | Injection | 10,000 | -- | 5,213–11,935 |
| Active | CONOCO-DEAN UNIT #24 | 42-079-00483 | EXTEX OPER CO | Injection | 1,000 | -- | 4,930–4,992 |
| Active | DUGGAN SLAUGHTER UNIT #608NW | 42-079-32827 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,000–5,050 |
| Active | CONOCO-DEAN UNIT #20 | 42-079-00468 | EXTEX OPER CO | Injection | 1,000 | -- | 4,921–4,995 |
| Active | MASTEN, F. O. #67R | 42-079-31870 | VISION OIL AND GAS LLC | Injection | 500 | -- | 4,990–5,082 |
| Plugged | MALLET UNIT #1104R | 42-079-30204 | HILCORP ENGY CO | Injection | 2,500 | 71,530 | 4,400–5,064 |
| Plugged | MALLET UNIT #176W | 42-079-01457 | HILCORP ENGY CO | Injection | 2,000 | 35,114 | 4,400–5,415 |
| Plugged | DEAN, C. S. "A" #260W | 42-079-33068 | HILCORP ENGY CO | Injection | 500 | 29,172 | 4,966–5,060 |
| Plugged | STARNES UNIT #1710W | 42-079-00347 | AVIATOR ENERGY, LLC | Injection | 200 | 16,370 | 5,016–5,031 |
| Plugged | NORTH CENTRAL LEVELLAND UNIT #360 | 42-079-31571 | HILCORP ENGY CO | Injection | 500 | 14,202 | 4,814–4,855 |
| Plugged | DUGGAN SLAUGHTER UNIT #781AW | 42-079-30187 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | 9,844 | 5,000–5,050 |
| Plugged | WEST LEVELLAND UNIT #144W | 42-079-00155 | HILCORP ENGY CO | Injection | 300 | 6,666 | 4,650–5,000 |
| Plugged | MAGNUM LEVELLAND UNIT #406 | 42-079-32910 | NEW HORIZON RESOURCES LLC | Injection | 1,500 | 759 | 4,750–5,050 |
| Plugged | WEST LEVELLAND UNIT #26W | 42-079-01924 | HILCORP ENGY CO | Injection | 175 | 362 | 4,828–4,889 |
| Inactive | SHERMAN SWD #1 | 42-079-33409 | MANZANO, LLC | Disposal | 20,000 | -- | 5,280–11,400 |
| Plugged | IGOE-SMITH OPER. AREA #19W | 42-079-01112 | OCCIDENTAL PERMIAN LTD | Injection | 5,150 | -- | 4,700–5,400 |
| Plugged | BONANZA (SAN ANDRES) UNIT #1303 | 42-079-31361 | MANZANO, LLC | Injection | 1,500 | -- | 4,764–4,960 |
| Plugged | CONOCO-DEAN UNIT #110W | 42-079-30550 | EXTEX OPER CO | Injection | 1,000 | -- | 4,950–5,000 |
| Plugged | DUGGAN SLAUGHTER UNIT #127AW | 42-079-01167 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,041–5,076 |
| Inactive | DEAN UNIT #E 5W | 42-079-33258 | ROYAL ORYX OG LLC | Injection | 1,000 | -- | 5,000–5,100 |
| Plugged | DUGGAN SLAUGHTER UNIT #77AW | 42-079-01162 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,073–5,086 |
| Plugged | DUGGAN SLAUGHTER UNIT #21BW | 42-079-00572 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,034–5,077 |
| Inactive | DEAN UNIT #C 5W | 42-079-33264 | ROYAL ORYX OG LLC | Injection | 1,000 | -- | 5,000–5,100 |
| Plugged | DUGGAN SLAUGHTER UNIT #521AW | 42-079-00695 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 4,971–5,049 |
| Plugged | BONANZA (SAN ANDRES) UNIT #902 | 42-079-31633 | MANZANO, LLC | Injection | 600 | -- | 4,722–4,919 |
| Inactive | SOUTHWEST LEVELLAND UNIT #27X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,835–5,200 |
| Plugged | SOUTHWEST LEVELLAND UNIT #113W | 42-079-32880 | APC OPER PARTNERSHIP | Injection | 500 | -- | 4,800–5,000 |
| Inactive | DEAN, C. S. "A" #86XA | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Plugged | VEAL #27W | 42-079-00108 | NEW HORIZON RESOURCES LLC | UIC | 500 | -- | 4,919–5,020 |
| Inactive | DEAN, C. S. "A" #87W | 42-079-20032 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Inactive | DEAN, C. S. "A" #82X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Inactive | SOUTHWEST LEVELLAND UNIT #1X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,835–5,200 |
| Plugged | DEAN UNIT #A 1W | 42-079-00362 | ENGAS XP, LLC | UIC | 500 | -- | 5,021–5,091 |
| Inactive | DEAN, C. S. "A" #89X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Inactive | DEAN, C. S. "A" #26X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Plugged | VEAL #47 | 42-079-32642 | NEW HORIZON RESOURCES LLC | Injection | 500 | -- | 4,854–5,000 |
| Inactive | DEAN, C. S. "A" #42X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Plugged | MILLER-WRIGHT UNIT #302W | 42-079-01285 | KIMBELL OPER CO | Injection | 500 | -- | 4,750–5,050 |
| Plugged | SOUTHWEST LEVELLAND UNIT #67W | 42-079-00871 | HILCORP ENGY CO | Injection | 500 | -- | 4,835–5,200 |
| Plugged | VEAL #48W | 42-079-32639 | NEW HORIZON RESOURCES LLC | Injection | 500 | -- | 4,860–5,000 |
| Inactive | DEAN, C. S. "A" #73X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Inactive | DEAN, C. S. "A" #232W | 42-079-32848 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Inactive | DEAN, C. S. "A" #83X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Plugged | DEAN, C. S. "A" #126W | 42-079-02032 | APC OPER PARTNERSHIP | Injection | 500 | -- | 4,835–5,200 |
| Plugged | LANDON (SAN ANDRES) UNIT #11W | 42-079-00210 | PRASAD, HARI PROD CO | Injection | 500 | -- | 5,025–5,067 |
| Inactive | SOUTHWEST LEVELLAND UNIT #19W | 42-079-02370 | HILCORP ENGY CO | Injection | 500 | -- | 4,835–5,200 |
| Inactive | SOUTHWEST LEVELLAND UNIT #41W | 42-079-02369 | HILCORP ENGY CO | Injection | 500 | -- | 4,835–5,200 |
| Inactive | DEAN, C. S. "A" #22X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
| Inactive | DEAN, C. S. "A" #80X | 42-079-00000 | HILCORP ENGY CO | Injection | 500 | -- | 4,850–5,200 |
Source: RRC UIC well master and H-10 injection filings. H-10s are annual filings on staggered anniversaries — injected volumes shown through 2025-06, the newest month with complete reporting; recent months are never estimated.