Saltwater Disposal Wells in Refugio County
Complete UIC injection & disposal well inventory from RRC permits, with reported H-10 volumes.
Active Wells
231
Permitted Capacity
2.1M bbl/d
Injected 12mo (thru 2025-06)
73.5M bbl
UIC Permits All Time
829
| STATUS | LEASE / WELL | API | OPERATOR | TYPE | PERMITTED BBL/D | INJECTED 12MO | ZONE (FT) |
|---|---|---|---|---|---|---|---|
| Active | T-C OIL CO.-O'CONNOR #63 | 42-391-31695 | T-C OIL CO, LLC | Disposal | 6,000 | 79,179 | 3,670–3,980 |
| Active | WILLIAMS, MAUDE, ETAL -A- #53A | 42-391-00482 | HILCORP ENGY CO | Disposal | 5,000 | 78,974 | 3,385–3,429 |
| Active | HEARD, A. W. J. #2 | 42-391-02353 | PALEO OIL CO LLC | Injection | 8,000 | 77,528 | 4,942–5,584 |
| Active | FAGAN #16 | 42-391-32901 | ALLEGIANT RES, LLC | Injection | 10,000 | 71,310 | 3,180–4,062 |
| Active | FAGAN #32 | 42-391-32893 | ALLEGIANT RES, LLC | Injection | 10,000 | 71,010 | 3,190–4,080 |
| Active | O'CONNOR, THOMAS "A" #5W | 42-391-01498 | HILCORP ENGY CO | Injection | 10,000 | 65,784 | 5,665–5,799 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q119E | 42-391-32501 | HILCORP ENGY CO | Injection | 10,000 | 62,405 | 5,860–5,990 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q243 | 42-391-01176 | HILCORP ENGY CO | Injection | 4,000 | 59,105 | 5,811–5,821 |
| Active | O'CONNOR #10 | 42-391-00242 | T-C OIL CO, LLC | Injection | 2,500 | 58,902 | 4,490–4,700 |
| Active | ROOKE. B.D. #32 | 42-391-03383 | RISING STAR ENGY PTRS II | Disposal | 10,000 | 53,467 | 4,530–4,750 |
| Active | T-C OIL CO.- O'CONNOR #72 | 42-391-31797 | T-C OIL CO, LLC | Disposal | 2,500 | 50,435 | 3,430–4,000 |
| Active | ROOKE. B.D. #48 | 42-391-03442 | RISING STAR ENGY PTRS II | Disposal | 10,000 | 47,333 | 4,530–4,760 |
| Active | O'CONNOR -H- #1 | 42-391-00025 | T-C OIL CO, LLC | Disposal | 3,000 | 37,893 | 3,907–3,911 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #H059 | 42-391-01337 | HILCORP ENGY CO | Injection | 10,000 | 32,075 | 5,769–5,812 |
| Active | SCANIO, M #25 | 42-391-32977 | DIGITAL OPERATING COMPANY LLC | Injection | 25,000 | 24,948 | 3,600–4,620 |
| Active | HEARD, CLAUDE E. ET AL #41 | 42-391-33018 | HILCORP ENGY CO | Injection | 10,000 | 21,967 | 4,350–4,420 |
| Active | FOX, W. J. -A- #18 | 42-391-01282 | HILCORP ENGY CO | Disposal | 10,000 | 20,291 | 3,570–3,900 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #N111 | 42-391-01717 | HILCORP ENGY CO | Injection | 5,000 | 15,726 | 5,725–5,825 |
| Active | WELDER FORD #8 | 42-391-33080 | DALLAS PETRO GROUP, LLC | Injection | 25,000 | 15,400 | 4,800–5,600 |
| Active | HEARD, CLEMENT #15 | 42-391-03795 | HILCORP ENGY CO | Disposal | 12,000 | 13,813 | 3,550–3,850 |
| Active | DENNIS O'CONNOR ET AL -L- #L 13 | 42-391-00321 | T-C OIL CO, LLC | Disposal | 5,000 | 3,260 | 3,630–3,900 |
| Active | TOM O'CONNOR (5730 FT. SD.) UNIT #C 4 | 42-391-31239 | HILCORP ENGY CO | Injection | 5,000 | 2,770 | 5,870–5,935 |
| Active | OCONNOR -H- #H 5 | 42-391-00040 | T-C OIL CO, LLC | Disposal | 0 | 2,715 | 4,435–4,780 |
| Active | OBRIEN,J.M.,-A- EAST 101 AC. 6 #9 | 42-391-00959 | DEWBRE PETRO CORP | Injection | 1,200 | 2,470 | 4,300–4,400 |
| Active | OBRIEN, J. J., -B- #5 D | 42-391-30227 | GRETA OPER CO LLC | Disposal | 10,000 | 2,120 | 3,450–3,850 |
| Active | JOHN MITCHELL #4 | 42-391-03819 | PALOMA OPER, LLC | Disposal | 1,000 | 1,904 | 4,330–4,610 |
| Active | WILLIAMS, MAUDE, ET AL -B- #6 | 42-391-00505 | HILCORP ENGY CO | Injection | 10,000 | 117 | 5,410–5,550 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #P072 | 42-391-01328 | HILCORP ENGY CO | Injection | 20,000 | -- | 4,400–4,480 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #P006G | 42-391-01496 | HILCORP ENGY CO | Disposal | 20,000 | -- | 2,650–3,943 |
| Active | LAMBERT, M.F. #40 | 42-391-01425 | HILCORP ENGY CO | Disposal | 20,000 | -- | 2,875–4,025 |
| Active | OCONNOR, THOMAS, -A- #102 | 42-391-01558 | HILCORP ENGY CO | Disposal | 20,000 | -- | 3,690–4,010 |
| Active | O'CONNOR, THOMAS -A- #42 | 42-391-01517 | HILCORP ENGY CO | Disposal | 20,000 | -- | 3,600–3,925 |
| Active | HEARD, FANNIE V. W. MRS. #70 | 42-391-00717 | HILCORP ENGY CO | Disposal | 15,000 | -- | 3,110–4,060 |
| Active | OCONNOR, THOMAS -A- #6 | 42-391-01499 | HILCORP ENGY CO | Disposal | 15,000 | -- | 3,475–3,800 |
| Active | HEARD, FANNIE V. W., MRS. #56 | 42-391-00573 | HILCORP ENGY CO | Disposal | 15,000 | -- | 3,100–3,790 |
| Active | HEARD, J. F. B.- TEX #1 | 42-391-00890 | GRETA OPER CO LLC | Injection | 15,000 | -- | 4,414–4,424 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q913 | 42-391-80645 | HILCORP ENGY CO | Injection | 15,000 | -- | 5,690–5,890 |
| Active | LAMBERT, M. F. #G 8 | 42-391-01402 | HILCORP ENGY CO | Disposal | 15,000 | -- | 2,900–3,847 |
| Active | O'CONNOR, THOMAS "A" #105 | 42-391-01528 | HILCORP ENGY CO | Disposal | 12,000 | -- | 3,650–4,050 |
| Active | OCONNOR, THOMAS -A- #2SD | 42-391-01580 | HILCORP ENGY CO | Disposal | 12,000 | -- | 3,455–3,480 |
| Active | REILLY, ANNIE ET VIR #3G | 42-391-00774 | HILCORP ENGY CO | Disposal | 12,000 | -- | 3,330–3,810 |
| Active | LAMBERT, M. F. #133 | 42-391-03914 | HILCORP ENGY CO | Disposal | 10,000 | -- | 3,615–3,950 |
| Active | HEARD, FANNIE V.W. #24 | 42-391-30390 | DORCHESTER OPERATING COMPANY LLC | Injection | 10,000 | -- | 3,600–4,440 |
| Active | WILLIAMS, MAUDE ET AL -A- #10 | 42-391-00495 | HILCORP ENGY CO | Disposal | 10,000 | -- | 3,040–3,795 |
| Active | O'CONNOR, M. E. #11D | 42-391-30503 | T-C OIL CO, LLC | Injection | 10,000 | -- | 3,550–4,313 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #C110 | 42-391-01588 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,795–5,813 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q612 | 42-391-30349 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,739–5,805 |
| Active | TOM O'CONNOR (4150 FT. SD.) UNIT #W924A | 42-391-00524 | HILCORP ENGY CO | Injection | 10,000 | -- | 4,130–4,177 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q118E | 42-391-32502 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,400–5,960 |
| Active | O'BRIEN, J.M. #312A | 42-391-31278 | DORCHESTER OPERATING COMPANY LLC | Injection | 10,000 | -- | 2,400–3,650 |
| Active | HEARD, FANNIE V.W. #30 | 42-391-31837 | DORCHESTER OPERATING COMPANY LLC | Injection | 10,000 | -- | 3,200–3,800 |
| Active | TOM O'CONNOR (4150 FT. SD.) UNIT #W431A | 42-391-00658 | HILCORP ENGY CO | Injection | 10,000 | -- | 4,126–4,180 |
| Active | FAGAN #15 | 42-391-32816 | ALLEGIANT RES, LLC | Disposal | 10,000 | -- | 3,190–4,080 |
| Active | TOM O'CONNOR(5600 FOOT SAND)UNIT #W719UB | 42-391-31900 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,525–5,555 |
| Active | HEARD, CLAUDE E. ET AL #42 | 42-391-33017 | HILCORP ENGY CO | Injection | 10,000 | -- | 4,380–4,430 |
| Active | O'CONNOR, TOM #4 | 42-391-00986 | DORCHESTER OPERATING COMPANY LLC | Injection | 10,000 | -- | 2,865–4,200 |
| Active | TOM O'CONNOR(5600 FOOT SAND)UNIT #W443B | 42-391-33136 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,670–5,750 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q443 | 42-391-33136 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,770–5,920 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #A019W | 42-391-32970 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,755–5,822 |
| Active | WILLIAMS, MAUDE, ET AL -A- #59W | 42-391-00455 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,430–5,560 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #P123 | 42-391-01401 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,750–5,810 |
| Active | LAMBERT, M. F. #60 | 42-391-01433 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,600–5,640 |
| Active | TOM O'CONNOR (4150 FT. SD.) UNIT #W103A | 42-391-00747 | HILCORP ENGY CO | Injection | 10,000 | -- | 4,130–4,185 |
| Active | OCONNOR, THOMAS -A- #101 | 42-391-01557 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,870–5,970 |
| Active | FAGAN #20 | 42-391-32994 | ALLEGIANT RES, LLC | Injection | 10,000 | -- | 3,180–4,060 |
| Active | FOX, W. J. -A- #51 | 42-391-33183 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,857–5,987 |
| Active | FOX, W. J. -A- #50 | 42-391-33075 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,825–5,954 |
| Active | LAMBERT, M. F. #159 | 42-391-32700 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,590–5,760 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q017E | 42-391-01537 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,798–5,893 |
| Active | LAMBERT E, M.F. #A 10 | 42-391-31923 | HILCORP ENGY CO | Injection | 10,000 | -- | 5,630–5,700 |
| Active | HEARD, J.F.B. #27 | 42-391-31756 | DORCHESTER OPERATING COMPANY LLC | Injection | 9,000 | -- | 2,800–3,175 |
| Active | HEARD, J.F.B. #9 | 42-391-00868 | DORCHESTER OPERATING COMPANY LLC | Injection | 9,000 | -- | 3,100–3,900 |
| Active | OBRIEN, J. M. #308 | 42-391-30209 | DORCHESTER OPERATING COMPANY LLC | Injection | 9,000 | -- | 3,100–3,200 |
| Active | T-C OIL CO.-OCONNOR #60 | 42-391-31260 | T-C OIL CO, LLC | Disposal | 8,000 | -- | 3,466–3,546 |
| Active | FOX, W. J. "B" #38 | 42-391-01304 | HILCORP ENGY CO | Disposal | 8,000 | -- | 3,700–4,250 |
| Active | HEARD, J. F. B. #8 | 42-391-00867 | DORCHESTER OPERATING COMPANY LLC | Injection | 8,000 | -- | 3,050–3,700 |
| Active | OBRIEN, J. J., -A- #5 | 42-391-00817 | GRETA OPER CO LLC | Injection | 7,500 | -- | 4,350–4,500 |
| Active | O'CONNOR #69 | 42-391-31972 | T-C OIL CO, LLC | Disposal | 7,500 | -- | 4,530–4,742 |
| Active | T-C OIL CO.-OCONNOR #44 | 42-391-00379 | T-C OIL CO, LLC | Injection | 7,200 | -- | 4,454–4,492 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #C414 | 42-391-01637 | HILCORP ENGY CO | Disposal | 7,000 | -- | 3,600–3,830 |
| Active | WILLIAMS, MAUDE ET AL -A- #D 60 | 42-391-30016 | HILCORP ENGY CO | Disposal | 6,000 | -- | 3,725–3,910 |
| Active | WILLIAMS, MAUDE, ETAL -A- #D 1SW | 42-391-80858 | HILCORP ENGY CO | Disposal | 6,000 | -- | 3,810–3,972 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #C114 | 42-391-03867 | HILCORP ENGY CO | Injection | 6,000 | -- | 5,770–5,820 |
| Active | WLP #3 | 42-391-32220 | T-C OIL CO, LLC | Injection | 6,000 | -- | 4,486–4,526 |
| Active | TOM O'CONNOR (5730 FT. SD.) UNIT #B 18 | 42-391-00520 | HILCORP ENGY CO | Injection | 5,000 | -- | 5,765–5,790 |
| Active | WLP #24 | 42-391-32344 | T-C OIL CO, LLC | Injection | 5,000 | -- | 4,514–4,562 |
| Active | TOM O'CONNOR(5800 SD) FIELD UNIT #Q004 | 42-391-01497 | HILCORP ENGY CO | Disposal | 5,000 | -- | 3,050–3,130 |
| Active | LAMBERT , M. F. #H130 | 42-391-31679 | HILCORP ENGY CO | Disposal | 5,000 | -- | 3,644–3,950 |
| Active | OCONNOR, THOMAS -A- #95 | 42-391-01555 | HILCORP ENGY CO | Disposal | 5,000 | -- | 3,002–3,040 |
| Active | TOM O'CONNOR (5730 FT. SD.) UNIT #A 5 | 42-391-00419 | HILCORP ENGY CO | Injection | 5,000 | -- | 5,690–5,730 |
| Active | O'CONNER -D- #D 47 | 42-391-32635 | T-C OIL CO, LLC | Injection | 5,000 | -- | 4,500–4,550 |
| Active | OCONNOR, THOMAS, -A- #18 | 42-391-01510 | HILCORP ENGY CO | Injection | 5,000 | -- | 5,770–5,830 |
| Active | O'CONNER -D- #D 45 | 42-391-32614 | T-C OIL CO, LLC | Injection | 5,000 | -- | 4,500–4,550 |
| Active | O'CONNER -D- #D 39 | 42-391-32338 | T-C OIL CO, LLC | Injection | 5,000 | -- | 4,500–4,550 |
| Active | SCHIRMER, ETAL #1 | 42-391-31761 | BENT WING ENERGY, LLC | Disposal | 5,000 | -- | 3,650–4,050 |
| Active | TOM O'CONNOR (4150 FT. SD.) UNIT #W035A | 42-391-01462 | HILCORP ENGY CO | Injection | 5,000 | -- | 4,050–4,200 |
| Active | TOM O'CONNOR (5730 FT. SD.) UNIT #A 8 | 42-391-00422 | HILCORP ENGY CO | Injection | 5,000 | -- | 5,690–5,730 |
| Active | HEARD, FANNIE V. W., MRS. #1 | 42-391-30165 | HILCORP ENGY CO | Disposal | 5,000 | -- | 3,204–3,234 |
| Active | LAMBERT #4 | 42-391-01451 | PENNZENERGY EXP. & PROD., L.L.C | Disposal | 4,000 | -- | 3,804–3,904 |
| Active | TOM OCONNOR (5800 SD) FLD. UNIT #Q054 | 42-391-01470 | HILCORP ENGY CO | Injection | 4,000 | -- | 5,774–5,792 |
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.