Produced water and disposal in Refugio County
Every injection and disposal permit in the county, what each well is permitted to take, what its operator reported, and who is reporting daily. Earthquakes in the area →
Refugio County has 231 active injection and disposal wells, 90 of them permitted for disposal, with 2.1 million barrels a day of permitted capacity.
Operators reported 74 million barrels injected on H-10 filings in the twelve months to June 2025, down 11% on the year before, about 10% of what the permits allow.
Hilcorp Engy Co is the largest injector in the county, with 51 million barrels reported across 143 active wells.
- 231
- active injection wells, 90 for disposal
- 2.11M
- bbl/d permitted capacity
- 73.5M
- bbl reported, H-10 year to Jun 2025 -11%
- 10%
- of permitted capacity used
- 829
- UIC permits on file, all time
Reported injection, by month
H-10 FILINGS · TEN YEARS TO JUN 2025
Last 12 months 73,523,439 · prior 12 82,376,271(-11%)
Who injects here
Operators with active permits in the county, by reported H-10 volume over the settled year.
| Operator | Reported, bbl | Active wells | Capacity bbl/d |
|---|---|---|---|
| Hilcorp Engy Co | 51.4M | 143 | 1.5M |
| T-C Oil Co, LLC | 10.3M | 47 | 227K |
| Dorchester Operating Company LLC | 5.44M | 13 | 133K |
| Greta Oper Co LLC | 2.17M | 4 | 47.5K |
| South Texas Oper Co | 1.33M | 1 | 15K |
| Bent Wing Energy, LLC | 1.29M | 4 | 17K |
| Bes, Environmental Services,inc | 461K | 1 | 25K |
| San Isidro Dev Co, L. C | 350K | 1 | 10K |
| Dewbre Petro Corp | 333K | 2 | 2.4K |
| Allegiant Res, LLC | 142K | 4 | 40K |
| Rising Star Engy Ptrs II | 101K | 2 | 20K |
| Finaly Res LLC | 85.1K | 1 | 3K |
| Paleo Oil Co LLC | 77.5K | 1 | 8K |
| Digital Operating Company LLC | 24.9K | 1 | 25K |
| Dallas Petro Group, LLC | 15.4K | 1 | 25K |
| Paloma Oper, LLC | 1.9K | 1 | 1K |
| Pennzenergy Exp. & Prod., L.L.C | — | 1 | 4K |
| 2 D Oil & Gas LLC | — | 1 | 1K |
| Salida Expl, LLC | — | 1 | 800 |
| Magnum Producing & Oper Co | — | 1 | 750 |
Injection permits
829 UIC PERMITS · 231 ACTIVE · PAGE 1 OF 9
Active permits first, by reported volume, then cancelled, plugged, and never-activated permits.
| Well | Operator | Status | Purpose | Reported, bbl | bbl/d permitted | Zone, ft | Permitted |
|---|---|---|---|---|---|---|---|
| Heard, Fannie V. W., Mrs. #98 | Hilcorp Engy Co | Active | Enhanced recovery | 5.87M | 20,000 | 4,387–4,729 | Mar 25, 2021 |
| Heard, Clement #27 | Hilcorp Engy Co | Active | Disposal | 3.17M | 15,000 | 3,580–4,050 | Mar 16, 2009 |
| O'Connor, Thomas,-C- #98 | Hilcorp Engy Co | Active | Disposal | 2.95M | 25,000 | 3,585–3,930 | Feb 6, 2015 |
| O'Connor, Thomas -A- #33 | Hilcorp Engy Co | Active | Enhanced recovery | 2.54M | 15,000 | 4,400–4,850 | Jul 22, 2021 |
| Williams, Maude et al "A" #D136 | Hilcorp Engy Co | Active | Disposal | 2.11M | 15,000 | 3,130–4,050 | Oct 28, 2022 |
| Heard, Fannie V. W. #33 | Dorchester Operating Company LLC | Active | Enhanced recovery | 1.99M | 20,000 | 4,323–4,640 | Jun 25, 2024 |
| Heard, J. F. B. #26 | Dorchester Operating Company LLC | Active | Enhanced recovery | 1.97M | 10,000 | 2,815–4,100 | Jun 24, 2010 |
| Obrien, J. J., -A- #7 | Greta Oper Co LLC | Active | Enhanced recovery | 1.5M | 15,000 | 4,350–4,470 | Apr 13, 1993 |
| Williams, Maude, Etal -A- #D124 | Hilcorp Engy Co | Active | Disposal | 1.49M | 10,000 | 2,985–4,030 | Dec 28, 2021 |
| Lambert, M. F. #139 | Hilcorp Engy Co | Active | Disposal | 1.45M | 20,000 | 3,600–4,160 | May 1, 2006 |
| Oconnor, Thomas, -C- #90 | Hilcorp Engy Co | Active | Disposal | 1.42M | 25,000 | 3,530–4,070 | Jan 16, 2015 |
| Williams, Maude, Etal -A- #D 23 | Hilcorp Engy Co | Active | Disposal | 1.39M | 15,000 | 3,030–3,970 | Oct 28, 2022 |
| Williams, Maude et al -A- #D 25 | Hilcorp Engy Co | Active | Disposal | 1.36M | 12,000 | 3,726–3,756 | Mar 28, 2019 |
| Obrien, J. M. #9 | South Texas Oper Co | Active | Enhanced recovery | 1.33M | 15,000 | 3,475–4,395 | Feb 10, 2023 |
| Heard, Clement #11 | Hilcorp Engy Co | Active | Disposal | 1.31M | 8,000 | 2,830–3,870 | Mar 13, 2023 |
| Heard, Fannie V.W. Mrs. #62 | Hilcorp Engy Co | Active | Disposal | 1.15M | 20,000 | 3,100–4,050 | Jun 18, 2009 |
| Williams, Maude, Etal -A- #D144 | Hilcorp Engy Co | Active | Disposal | 1.12M | 15,000 | 2,840–3,970 | Jan 30, 2023 |
| Lambert, M. F. #90 | Hilcorp Engy Co | Active | Disposal | 1.08M | 20,000 | 3,600–4,100 | Jan 31, 2005 |
| Williams, Maude, Etal -A- #D 67 | Hilcorp Engy Co | Active | Disposal | 1.06M | 15,000 | 3,600–4,000 | Jan 13, 2006 |
| Maude Williams et al 'A' #D 21 | Hilcorp Engy Co | Active | Disposal | 1.05M | 15,000 | 3,130–4,050 | Nov 9, 2022 |
| WLP #28 | T-C Oil Co, LLC | Active | Enhanced recovery | 1.05M | 5,000 | 4,533–4,579 | Aug 19, 2004 |
| O'Connor, Thomas -C- #85 | Hilcorp Engy Co | Active | Enhanced recovery | 1M | 15,000 | 5,600–6,120 | Nov 19, 2021 |
| Lambert, M. F. #108 | Hilcorp Engy Co | Active | Disposal | 922K | 20,000 | 3,600–4,025 | Jun 30, 2006 |
| O'Connor, Dennis et al -N- #N 14 | T-C Oil Co, LLC | Active | Disposal | 918K | 5,000 | 3,740–4,740 | Apr 6, 2009 |
| Lambert, M.F. #69 | Hilcorp Engy Co | Active | Disposal | 900K | 10,000 | 3,670–4,130 | Feb 8, 2013 |
| Tom Oconnor (5800 SD) Fld. Unit #3115Q | Hilcorp Engy Co | Active | Enhanced recovery | 823K | 5,000 | 5,700–5,800 | Nov 6, 2001 |
| Tom Oconnor (5800 SD) Fld. Unit #Q404 | Hilcorp Engy Co | Active | Enhanced recovery | 813K | 10,000 | 5,819–5,862 | Jun 20, 2024 |
| Schirmer, Henry #1 | Bent Wing Energy, LLC | Active | Disposal | 795K | 5,000 | 3,552–3,938 | Oct 5, 2007 |
| Williams, Maude, Etal -A- #D 22 | Hilcorp Engy Co | Active | Disposal | 748K | 15,000 | 2,860–3,960 | Aug 30, 2023 |
| O'Connor #74 | T-C Oil Co, LLC | Active | Disposal | 743K | 7,500 | 4,530–4,748 | May 29, 2019 |
| Tom Oconnor (5800 SD) Fld. Unit #P145 | Hilcorp Engy Co | Active | Disposal | 712K | 20,000 | 3,000–4,075 | Feb 27, 2006 |
| WLP #32 | T-C Oil Co, LLC | Active | Enhanced recovery | 712K | 5,000 | 4,532–4,627 | May 15, 2002 |
| Obrien, J. M. #302 | Dorchester Operating Company LLC | Active | Enhanced recovery | 697K | 9,000 | 3,100–3,200 | Nov 12, 2003 |
| Thomas O'Connor "C" #3G | Hilcorp Engy Co | Active | Disposal | 694K | 10,000 | 3,000–4,050 | Feb 26, 2013 |
| Williams, Maude et al 'A' #D 20 | Hilcorp Engy Co | Active | Disposal | 654K | 15,000 | 3,000–4,060 | Jan 4, 2006 |
| Heard, Clement #17 | Hilcorp Engy Co | Active | Enhanced recovery | 648K | 7,000 | 3,157–3,233 | Aug 9, 2000 |
| Tom Oconnor (5800 SD) Fld. Unit #C104 | Hilcorp Engy Co | Active | Enhanced recovery | 626K | 4,000 | 5,780–5,820 | Apr 23, 1997 |
| Tom O'CONNOR(5600 Foot Sand)unit #W524B | Hilcorp Engy Co | Active | Enhanced recovery | 609K | 37,498 | 4,380–5,600 | Jun 2, 2023 |
| Tom O'CONNOR(5600 Foot Sand)unit #3111WB | Hilcorp Engy Co | Active | Enhanced recovery | 604K | 10,000 | 5,175–5,605 | Dec 13, 2012 |
| Heard, Fannie V. W., Mrs. #49 | Hilcorp Engy Co | Active | Disposal | 601K | 10,000 | 3,620–3,716 | Jun 2, 1999 |
| WLP #31 | T-C Oil Co, LLC | Active | Enhanced recovery | 597K | 5,000 | 4,536–4,631 | May 15, 2002 |
| Tom O'Connor (5730 Ft. Sd.) Unit #A 46 | Hilcorp Engy Co | Active | Enhanced recovery | 554K | 10,000 | 5,800–5,860 | Feb 5, 2018 |
| Williams, Maude, Etal -A- #D133 | Hilcorp Engy Co | Active | Disposal | 538K | 7,500 | 3,770–3,800 | Jun 15, 1987 |
| Tom O'Connor (4150 Ft. Sd.) Unit #W002GA | Hilcorp Engy Co | Active | Enhanced recovery | 525K | 5,000 | 4,050–4,200 | May 15, 2018 |
| O'Connor, Thomas "A" #103 | Hilcorp Engy Co | Active | Enhanced recovery | 514K | 10,000 | 5,835–5,848 | Apr 16, 2024 |
| T-C Oil Co. - O'Connor #87 | T-C Oil Co, LLC | Active | Enhanced recovery | 513K | 7,200 | 4,453–4,490 | Sep 27, 2001 |
| Heard, J.F.B. #16 | Dorchester Operating Company LLC | Active | Enhanced recovery | 512K | 10,000 | 3,100–3,190 | Jun 30, 1999 |
| Oconnor, Dennis, et al -N- #5 | T-C Oil Co, LLC | Active | Enhanced recovery | 495K | 5,000 | 3,430–3,790 | Apr 21, 2010 |
| Buck, I. G. W. #4 T | Bent Wing Energy, LLC | Active | Disposal | 494K | 5,000 | 3,650–4,060 | Mar 22, 1973 |
| Refugio SWD #2 | Bes, Environmental Services,inc | Active | Disposal | 461K | 25,000 | 4,200–4,700 | Oct 16, 2013 |
| Tom O'CONNOR(5600 Foot Sand)unit #3126WB | Hilcorp Engy Co | Active | Disposal | 457K | 10,000 | 5,500–5,660 | Apr 23, 2014 |
| Williams, Maude et al -C- #8 | Hilcorp Engy Co | Active | Enhanced recovery | 445K | 10,000 | 5,880–5,940 | Dec 19, 2017 |
| River Ranch -a-/Williams State U #5 | T-C Oil Co, LLC | Active | Disposal | 444K | 6,000 | 2,600–2,990 | Jan 5, 2012 |
| O'Connor, Thomas -C- #39 | Hilcorp Engy Co | Active | Enhanced recovery | 439K | 10,000 | 5,719–5,732 | Aug 8, 2023 |
| Williams, Maude et al "A" #D140 | Hilcorp Engy Co | Active | Disposal | 425K | 15,000 | 2,820–4,020 | Dec 16, 2022 |
| Tom O'CONNOR(5600 Foot Sand)unit #3107WB | Hilcorp Engy Co | Active | Enhanced recovery | 418K | 10,000 | 5,500–5,570 | Oct 19, 2017 |
| Tom O'CONNOR(5600 Foot Sand)unit #W101B | Hilcorp Engy Co | Active | Enhanced recovery | 412K | 10,000 | 5,150–5,630 | Aug 23, 2005 |
| Williams, Maude, Etal -A- #D132 | Hilcorp Engy Co | Active | Disposal | 405K | 15,000 | 3,000–4,050 | Jun 5, 2023 |
| Tom Oconnor (5800 SD) Fld. Unit #H117 | Hilcorp Engy Co | Active | Enhanced recovery | 390K | 6,000 | 5,760–5,810 | Apr 22, 2014 |
| Braman -F- #1 | T-C Oil Co, LLC | Active | Disposal | 389K | 3,000 | 6,300–7,500 | Mar 23, 2023 |
| T-C Oil Co. - O'Connor #88 | T-C Oil Co, LLC | Active | Enhanced recovery | 386K | 7,200 | 4,456–4,493 | Sep 27, 2001 |
| Tom Oconnor (5800 SD) Fld. Unit #Q283 | Hilcorp Engy Co | Active | Enhanced recovery | 386K | 10,000 | 5,600–5,814 | Sep 6, 2019 |
| Lambert, M. F. #43D | Hilcorp Engy Co | Active | Enhanced recovery | 386K | 15,000 | 2,250–4,120 | Jul 24, 2023 |
| Tom O'Connor (4150 Ft. Sd.) Unit #O111WA | Hilcorp Engy Co | Active | Enhanced recovery | 382K | 3,000 | 4,140–4,170 | Sep 16, 2005 |
| T-C Oil Co. - O'Connor #43 | T-C Oil Co, LLC | Active | Enhanced recovery | 375K | 7,200 | 4,455–4,494 | May 8, 2001 |
| Tom Oconnor (5800 SD) Fld. Unit #C103 | Hilcorp Engy Co | Active | Enhanced recovery | 367K | 7,500 | 5,784–5,799 | Jun 14, 1993 |
| Williams, Maude et al -A- #D 70 | Hilcorp Engy Co | Active | Disposal | 366K | 5,000 | 3,040–4,000 | Mar 2, 2023 |
| WLP #30 | T-C Oil Co, LLC | Active | Enhanced recovery | 361K | 5,000 | 4,539–4,634 | May 15, 2002 |
| Tom Oconnor (5800 SD) Fld. Unit #Q905 | Hilcorp Engy Co | Active | Enhanced recovery | 360K | 10,000 | 5,860–5,910 | Jul 19, 2024 |
| T-C Oil Co. - O'Connor #86 | T-C Oil Co, LLC | Active | Disposal | 351K | 5,000 | 3,790–4,060 | Oct 10, 2017 |
| Rooke, P.H. #66R | San Isidro Dev Co, L. C | Active | Disposal | 350K | 10,000 | 3,970–4,420 | Sep 14, 2022 |
| Lambert, M. F. #73 | Hilcorp Engy Co | Active | Enhanced recovery | 349K | 20,000 | 4,384–4,458 | Apr 25, 2023 |
| Obrien,j.m.,-A- East 101 Ac. 6 #8 | Dewbre Petro Corp | Active | Enhanced recovery | 330K | 1,200 | 4,300–4,400 | Mar 26, 2012 |
| River Ranch -B- State Unit #5 | T-C Oil Co, LLC | Active | Disposal | 314K | 6,000 | 2,600–3,020 | Apr 25, 2023 |
| Heard, J. F. B. #19 | Dorchester Operating Company LLC | Active | Enhanced recovery | 278K | 9,000 | 3,100–3,195 | Feb 28, 1994 |
| WLP #22 | T-C Oil Co, LLC | Active | Enhanced recovery | 276K | 5,000 | 4,529–4,570 | Apr 15, 2013 |
| T-C Oil Co. - O'Connor #17 | T-C Oil Co, LLC | Active | Enhanced recovery | 270K | 5,000 | 4,455–4,500 | Aug 4, 2004 |
| T-C Oil Co.-Oconnor #21 | T-C Oil Co, LLC | Active | Disposal | 266K | 6,000 | 3,705–4,008 | Aug 27, 2012 |
| Tom Oconnor (5800 SD) Fld. Unit #Q315 | Hilcorp Engy Co | Active | Enhanced recovery | 257K | 5,000 | 5,700–5,760 | Sep 24, 1999 |
| Tom O'Connor (5730 Ft. Sd.) Unit #A 19 | Hilcorp Engy Co | Active | Enhanced recovery | 247K | 6,000 | 5,659–5,676 | Jul 14, 2020 |
| Tom O'CONNOR(5600 Foot Sand)unit #3117WB | Hilcorp Engy Co | Active | Enhanced recovery | 241K | 8,000 | 5,550–5,597 | May 24, 2019 |
| Dennis O'Connor et al -N- #N 6 | T-C Oil Co, LLC | Active | Disposal | 237K | 3,000 | 3,178–3,402 | Dec 28, 2011 |
| Oconnor #38 | T-C Oil Co, LLC | Active | Disposal | 227K | 4,000 | 3,848–4,118 | Feb 10, 2009 |
| Tom Oconnor (5800 SD) Fld. Unit #N110 | Hilcorp Engy Co | Active | Enhanced recovery | 227K | 8,000 | 5,600–5,800 | Mar 5, 2010 |
| Tom O'CONNOR(5600 Foot Sand)unit #W907B | Hilcorp Engy Co | Active | Enhanced recovery | 208K | 10,000 | 5,634–5,670 | Feb 2, 2005 |
| WLP #16 | T-C Oil Co, LLC | Active | Enhanced recovery | 201K | 5,000 | 4,520–4,575 | Jan 11, 2013 |
| T-C Oil Co.- O'Connor #55 | T-C Oil Co, LLC | Active | Disposal | 187K | 6,000 | 3,766–4,055 | Sep 22, 2014 |
| Oconnor, Dennis, Etal -L- #L 77 | T-C Oil Co, LLC | Active | Enhanced recovery | 153K | 10,000 | 4,526–4,610 | Apr 30, 2009 |
| Oconnor, Dennis et al -L- #L 33 | T-C Oil Co, LLC | Active | Disposal | 152K | 3,000 | 3,742–4,040 | Jun 14, 2010 |
| Thomas O'Connor 'A' #71 | Hilcorp Engy Co | Active | Enhanced recovery | 150K | 5,000 | 5,450–5,850 | Sep 5, 1996 |
| WLP #29 | T-C Oil Co, LLC | Active | Enhanced recovery | 142K | 5,000 | 4,513–4,549 | Aug 19, 2004 |
| Oconnor, Dennis, Etal -L- #L 48 | T-C Oil Co, LLC | Active | Disposal | 140K | 3,500 | 3,400–3,600 | Mar 2, 2006 |
| Tom Oconnor (5800 SD) Fld. Unit #Q512 | Hilcorp Engy Co | Active | Enhanced recovery | 133K | 6,000 | 5,863–5,897 | May 4, 1984 |
| Tom Oconnor (5800 SD) Fld. Unit #H132 | Hilcorp Engy Co | Active | Enhanced recovery | 117K | 10,000 | 5,747–5,790 | Apr 23, 2013 |
| Lambert, M. F. #65 | Hilcorp Engy Co | Active | Enhanced recovery | 110K | 20,000 | 4,380–4,454 | Mar 3, 2023 |
| Tom Oconnor (5800) Field Unit #Q842W | Hilcorp Engy Co | Active | Enhanced recovery | 107K | 5,000 | 1,795–1,838 | Mar 22, 1979 |
| WLP #27 | T-C Oil Co, LLC | Active | Enhanced recovery | 90.5K | 5,000 | 4,510–4,560 | Apr 8, 2009 |
| Oconnor, Dennis, Etal -L- #L 87 | T-C Oil Co, LLC | Active | Enhanced recovery | 89K | 10,000 | 3,730–4,030 | Mar 2, 2012 |
| Roche "A" #9 | Finaly Res LLC | Active | Enhanced recovery | 85.1K | 3,000 | 5,050–6,050 | Oct 13, 2003 |
| Heard, Fannie V. W. Mrs. #112 | Hilcorp Engy Co | Active | Disposal | 81.1K | 30,000 | 3,600–4,110 | Oct 2, 2008 |
Latest disposal drilling permits
W-1 drilling permits in the county tagged as produced-water disposal.
| Issued | Permit | Operator | Lease / well |
|---|---|---|---|
| Oct 1, 2026 | 919005 | Rising Star Energy Partners II, | Rooke. B.D. SWD #3 39133360 |
| Oct 1, 2026 | 919003 | Rising Star Energy Partners II, | Rooke. B.D. SWD #2 39133359 |
| Oct 1, 2026 | 919001 | Rising Star Energy Partners II, | Rooke. B.D. SWD #1 39133358 |
| Oct 29, 2013 | 772290 | Basic Energy Services, L.P. | Refugio SWD #2 39133086 |
| Jan 15, 1982 | 147541 | Amoco Production Company | Heard, Ira "A" #5 D 39100740 |
| Nov 25, 1980 | 100377 | Texas Oil & Gas Corp. | Spikes, Myra "D" #1D 39181785 |
| Nov 21, 1980 | 100125 | Texas Oil & Gas Corp. | Fagan, P. H. Estate "L" #1D 39181782 |
| Mar 21, 1980 | 75934 | Exxon Corp. | Heard, J. F. B. #9D 39100868 |
| Mar 12, 1980 | 75030 | Conoco Inc. | Welder, J. F. Heirs-R #6 39131161 |
| Mar 3, 1980 | 73988 | Amoco Production Company | O'Brien, J. M. "A" #6 D 39130189 |
About this data
RRC UIC well master and H-10 injection reports, settled through Jun 2025; TexNet daily injection for the last settled month; disposal permit tags from Petrora's sector classifier.
Developers: this page as JSON is GET /v1/data/water/tx/refugio, documented in the API reference.