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 | CALVIN-STARNES UNIT #J 13 | 42-079-31386 | VISION OIL AND GAS LLC | Injection | 800 | 576 | 5,005–5,035 |
| Active | NORTH CENTRAL LEVELLAND UNIT #98 | 42-079-01657 | HILCORP ENGY CO | Injection | 1,000 | 564 | 4,560–5,000 |
| Active | CALVIN-STARNES UNIT #K 13 | 42-079-31380 | VISION OIL AND GAS LLC | Injection | 300 | 561 | 4,984–4,998 |
| Active | NORTH CENTRAL LEVELLAND UNIT #20W | 42-079-31557 | HILCORP ENGY CO | Injection | 3,000 | 556 | 4,600–4,900 |
| Active | NORTH CENTRAL LEVELLAND UNIT #64W | 42-079-30075 | HILCORP ENGY CO | Injection | 1,000 | 556 | 4,630–4,840 |
| Active | NORTH CENTRAL LEVELLAND UNIT #63W | 42-079-30496 | HILCORP ENGY CO | Injection | 650 | 556 | 4,560–5,000 |
| Active | NORTH CENTRAL LEVELLAND UNIT #216W | 42-079-01631 | HILCORP ENGY CO | Injection | 1,000 | 547 | 4,805–4,838 |
| Active | CALVIN-STARNES UNIT #K 16 | 42-079-31949 | VISION OIL AND GAS LLC | Injection | 800 | 527 | 5,034–5,076 |
| Active | NORTH CENTRAL LEVELLAND UNIT #188W | 42-079-30074 | HILCORP ENGY CO | Injection | 1,000 | 513 | 4,600–4,900 |
| Active | NORTHWEST MALLET UNIT #34W | 42-079-01016 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | 512 | 4,700–5,200 |
| Active | SEABOARD-WRIGHT #15A | 42-079-33226 | HEXP OPER, LLC | Injection | 1,000 | 487 | 4,700–4,900 |
| Active | WEST LEVELLAND UNIT #278W | 42-079-32367 | HILCORP ENGY CO | Injection | 300 | 412 | 4,750–5,000 |
| Active | CALVIN-STARNES UNIT #L 13 | 42-079-31388 | VISION OIL AND GAS LLC | Injection | 800 | 348 | 4,970–5,000 |
| Active | WHITEFACE UNIT #19W | 42-079-00529 | DOUBLE BARREL OIL LLC | Injection | 300 | 284 | 4,849–4,889 |
| Active | CALVIN-STARNES UNIT #L 16 | 42-079-31950 | VISION OIL AND GAS LLC | Injection | 800 | 283 | 4,975–5,072 |
| Active | WEST LEVELLAND UNIT #69W | 42-079-01922 | HILCORP ENGY CO | Injection | 300 | 263 | 4,650–5,000 |
| Active | NORTHWEST MALLET UNIT #87 | 42-079-01004 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | 181 | 4,700–5,200 |
| Active | STARNES RANCH "35" #2 | 42-079-32467 | VISION OIL AND GAS LLC | Injection | 500 | 172 | 5,033–5,066 |
| Active | WHITEFACE UNIT #131W | 42-079-31219 | DOUBLE BARREL OIL LLC | Injection | 1,000 | 128 | 4,650–4,944 |
| Active | NORTHWEST MALLET UNIT #168 | 42-079-33120 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | 9 | 4,700–5,200 |
| Active | CONOCO-DEAN UNIT #54W | 42-079-00495 | EXTEX OPER CO | Injection | 1,000 | 5 | 4,946–5,136 |
| Active | DEAN, C.S. "A-92" #1W | 42-079-32357 | HILCORP ENGY CO | Injection | 20,000 | -- | 11,000–11,784 |
| Active | MADDOX #1 | 42-079-32732 | DELRAY OIL, INC | Disposal | 15,000 | -- | 5,500–11,750 |
| Active | CR STARNES #1D | 42-079-32133 | DELRAY OIL, INC | Injection | 15,000 | -- | 11,750–12,400 |
| Active | NORTHWEST MALLET UNIT #180 | 42-079-33362 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,200 | -- | 4,700–5,200 |
| Active | IGOE-SMITH OPER. AREA #21W | 42-079-01114 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,150 | -- | 4,700–5,400 |
| Active | NORTHWEST MALLET UNIT #104W | 42-079-01001 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | -- | 4,700–5,200 |
| Active | IGOE-SMITH OPER. AREA #32W | 42-079-01125 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | -- | 4,700–5,200 |
| Active | NORTHWEST MALLET UNIT #102W | 42-079-00996 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | -- | 4,700–5,200 |
| Active | DEAN, CARRIE SLAUGHTER "C" #22 | 42-079-31083 | HILCORP ENGY CO | Injection | 5,000 | -- | 4,800–5,200 |
| Active | NORTHWEST MALLET UNIT #112 | 42-079-00999 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | -- | 4,700–5,200 |
| Active | NORTHWEST MALLET UNIT #93W | 42-079-01197 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 5,000 | -- | 4,700–5,200 |
| Active | DEAN, CARRIE SLAUGHTER "C" #21 | 42-079-31130 | HILCORP ENGY CO | Injection | 4,000 | -- | 4,800–5,200 |
| Active | LEAGUE 91 PROJECT #119W | 42-079-81045 | VISION OIL AND GAS LLC | Injection | 3,200 | -- | 4,994–5,037 |
| Active | WEST LEVELLAND UNIT #37W | 42-079-00973 | HILCORP ENGY CO | Injection | 3,000 | -- | 4,600–4,903 |
| Active | NORTH CENTRAL LEVELLAND UNIT #135 | 42-079-01383 | HILCORP ENGY CO | Injection | 3,000 | -- | 4,700–4,900 |
| Active | VEAL #13W | 42-079-00094 | EXTEX OPER CO | Injection | 2,500 | -- | 4,892–5,000 |
| Active | NORTH CENTRAL LEVELLAND UNIT #132W | 42-079-02319 | HILCORP ENGY CO | Injection | 2,500 | -- | 4,500–4,900 |
| Active | WEST LEVELLAND UNIT #62W | 42-079-01917 | HILCORP ENGY CO | Injection | 2,500 | -- | 4,600–4,910 |
| Active | MALLET UNIT #1524W | 42-079-33276 | HILCORP ENGY CO | Injection | 2,500 | -- | 4,400–5,170 |
| Active | DUGGAN SLAUGHTER UNIT #21AW | 42-079-01146 | CROSS TIMBERS ENGY, LLC | Injection | 2,500 | -- | 5,021–5,060 |
| Active | NORTH CENTRAL LEVELLAND UNIT #129W | 42-079-01664 | HILCORP ENGY CO | Injection | 2,500 | -- | 4,500–4,900 |
| Active | WEST LEVELLAND UNIT #38W | 42-079-00975 | HILCORP ENGY CO | Injection | 2,240 | -- | 4,500–5,000 |
| Active | BUCKSHOT UNIT #96W | 42-079-00848 | HUNT CIMARRON LTD. PARTNERSHIP | Injection | 2,000 | -- | 4,983–5,093 |
| Active | WHITEFACE UNIT #104W | 42-079-30797 | DOUBLE BARREL OIL LLC | Injection | 2,000 | -- | 4,622–4,940 |
| Active | MALLET UNIT #128W | 42-079-01467 | HILCORP ENGY CO | Injection | 2,000 | -- | 4,400–5,357 |
| Active | MALLET UNIT #1151W | 42-079-32631 | HILCORP ENGY CO | Injection | 2,000 | -- | 4,400–5,327 |
| Active | MALLET UNIT #139 | 42-079-01479 | HILCORP ENGY CO | Injection | 2,000 | -- | 4,400–5,365 |
| Active | MALLET UNIT #164W | 42-079-01504 | HILCORP ENGY CO | Injection | 2,000 | -- | 4,400–5,391 |
| Active | MALLET UNIT #103W | 42-079-01455 | HILCORP ENGY CO | Injection | 2,000 | -- | 4,400–5,329 |
| Active | IGOE-SMITH OPER. AREA #2W | 42-079-01096 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 1,500 | -- | 4,988–5,054 |
| Active | IGOE-SMITH OPER. AREA #58W | 42-079-00730 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 1,500 | -- | 4,964–5,078 |
| Active | IGOE-SMITH OPER. AREA #10W | 42-079-01103 | OCCIDENTAL PERMIAN EOR, LLC | Injection | 1,500 | -- | 4,985–5,048 |
| Active | WOODLEY, F. L. #88W | 42-079-33284 | HILCORP ENGY CO | Injection | 1,500 | -- | 4,850–5,500 |
| Active | WOODLEY, F. L. #98W | 42-079-33292 | HILCORP ENGY CO | Injection | 1,500 | -- | 4,850–5,500 |
| Active | MAGNUM LEVELLAND UNIT #205 | 42-079-32917 | EXTEX OPER CO | Injection | 1,500 | -- | 4,750–5,050 |
| Active | SOUTHWEST LEVELLAND UNIT #102W | 42-079-30107 | HILCORP ENGY CO | Injection | 1,500 | -- | 4,200–5,200 |
| Active | WOODLEY, F. L. #89W | 42-079-33285 | HILCORP ENGY CO | Injection | 1,500 | -- | 4,850–5,500 |
| Active | SOUTH MALLET UNIT #317 | 42-079-02267 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | SOUTH MALLET UNIT #316W | 42-079-02266 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | SOUTH MALLET UNIT #319 | 42-079-02269 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | SOUTH MALLET UNIT #301W | 42-079-02245 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | SOUTH MALLET UNIT #312W | 42-079-02262 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | SOUTH MALLET UNIT #307W | 42-079-02257 | WINN OPER, LLC | Injection | 1,200 | -- | 4,500–5,200 |
| Active | SOUTH MALLET UNIT #309W | 42-079-02259 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | SOUTH MALLET UNIT #318W | 42-079-31206 | WINN OPER, LLC | Injection | 1,200 | -- | 4,800–5,600 |
| Active | WHITEFACE UNIT #66W | 42-079-00801 | DOUBLE BARREL OIL LLC | Injection | 1,060 | -- | 4,635–4,942 |
| Active | DEAN, C. S. "A" #82W | 42-079-20030 | HILCORP ENGY CO | Injection | 1,035 | -- | 4,650–5,140 |
| Active | DUGGAN SLAUGHTER UNIT #291BW | 42-079-00650 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,022–5,086 |
| Active | WEST LEVELLAND UNIT #6W | 42-079-00328 | HILCORP ENGY CO | Injection | 1,000 | -- | 4,650–4,900 |
| Active | DUGGAN SLAUGHTER UNIT #1410NW | 42-079-32816 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 4,200–5,300 |
| Active | DUGGAN SLAUGHTER UNIT #1908N | 42-079-32803 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,022–5,060 |
| Active | NORTH CENTRAL LEVELLAND UNIT #542W | 42-079-32602 | HILCORP ENGY CO | Injection | 1,000 | -- | 4,600–5,000 |
| Active | DUGGAN SLAUGHTER UNIT #611BW | 42-079-00713 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,008–5,055 |
| Active | DUGGAN SLAUGHTER UNIT #591BW | 42-079-00710 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,044–5,076 |
| Active | DUGGAN SLAUGHTER UNIT #1610NW | 42-079-32829 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,000–5,050 |
| Active | DUGGAN SLAUGHTER UNIT #2009NW | 42-079-32833 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,000–5,050 |
| Active | DUGGAN SLAUGHTER UNIT #582W | 42-079-00708 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,044–5,076 |
| Active | DUGGAN SLAUGHTER UNIT #561BW | 42-079-00704 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,029–5,080 |
| Active | DUGGAN SLAUGHTER UNIT #781BW | 42-079-30194 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,000–5,050 |
| Active | CONOCO-DEAN UNIT #122 | 42-079-30804 | EXTEX OPER CO | Injection | 1,000 | -- | 4,900–5,100 |
| Active | DUGGAN SLAUGHTER UNIT #531BW | 42-079-00698 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,034–5,082 |
| Active | BUCKSHOT UNIT #92W | 42-079-01760 | HUNT CIMARRON LTD. PARTNERSHIP | Injection | 1,000 | -- | 4,946–5,069 |
| Active | DUGGAN SLAUGHTER UNIT #511BW | 42-079-00694 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,014–5,061 |
| Active | SEABOARD-WRIGHT #25 | 42-079-32433 | HEXP OPER, LLC | Injection | 1,000 | -- | 4,700–5,000 |
| Active | DUGGAN SLAUGHTER UNIT #1412NW | 42-079-32856 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,000–5,050 |
| Active | DUGGAN SLAUGHTER UNIT #481BW | 42-079-00688 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,004–5,100 |
| Active | DUGGAN SLAUGHTER UNIT #481AW | 42-079-00687 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 4,998–5,065 |
| Active | NORTH CENTRAL LEVELLAND UNIT #143 | 42-079-01662 | HILCORP ENGY CO | Injection | 1,000 | -- | 4,801–4,838 |
| Active | DUGGAN SLAUGHTER UNIT #461BW | 42-079-00684 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,036–5,076 |
| Active | DUGGAN SLAUGHTER UNIT #431BW | 42-079-00678 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,036–5,077 |
| Active | NORTH CENTRAL LEVELLAND UNIT #441AW | 42-079-32786 | HILCORP ENGY CO | Injection | 1,000 | -- | 4,600–5,000 |
| Active | SEABOARD-WRIGHT #2 | 42-079-32455 | HEXP OPER, LLC | Injection | 1,000 | -- | 4,727–5,000 |
| Active | DUGGAN SLAUGHTER UNIT #391BW | 42-079-00670 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,031–5,077 |
| Active | DUGGAN SLAUGHTER UNIT #361BW | 42-079-00664 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,007–5,096 |
| Active | DUGGAN SLAUGHTER UNIT #331BW | 42-079-00658 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,025–5,084 |
| Active | DUGGAN SLAUGHTER UNIT #321BW | 42-079-00656 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,002–5,054 |
| Active | DUGGAN SLAUGHTER UNIT #251BW | 42-079-00642 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 4,800–5,074 |
| Active | CONOCO-DEAN UNIT #130 | 42-079-30921 | EXTEX OPER CO | Injection | 1,000 | -- | 4,987–5,018 |
| Active | DUGGAN SLAUGHTER UNIT #201BW | 42-079-00626 | CROSS TIMBERS ENGY, LLC | Injection | 1,000 | -- | 5,041–5,078 |
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.