Produced water and disposal in Nolan 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 →
Nolan County has 196 active injection and disposal wells, 67 of them permitted for disposal, with 549,689 barrels a day of permitted capacity.
Operators reported 13 million barrels injected on H-10 filings in the twelve months to June 2025, up 6% on the year before, about 6% of what the permits allow.
Grayrock Energy II, LLC is the largest injector in the county, with 4.2 million barrels reported across 71 active wells.
- 196
- active injection wells, 67 for disposal
- 550K
- bbl/d permitted capacity
- 13M
- bbl reported, H-10 year to Jun 2025 +6%
- 6%
- of permitted capacity used
- 851
- UIC permits on file, all time
Reported injection, by month
H-10 FILINGS · TEN YEARS TO JUN 2025
Last 12 months 12,985,687 · prior 12 12,262,123(+6%)
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 |
|---|---|---|---|
| Grayrock Energy II, LLC | 4.19M | 71 | 85.8K |
| Scout Energy Management LLC | 3.79M | 20 | 73.3K |
| Extex Operating Company | 1.25M | 11 | 61K |
| D.K.D. | 937K | 5 | 63.5K |
| Clear Fork, Incorporated | 757K | 7 | 24K |
| Citation Oil & Gas Corp. | 488K | 29 | 61.2K |
| Daylight Petroleum LLC | 336K | 2 | 5.5K |
| Patton, E. N. Oil Company, Inc. | 330K | 1 | 5K |
| Double M Petroproperties, Inc. | 259K | 2 | 8K |
| Sojourner Drilling Corporation | 194K | 3 | 17K |
| Lone Star Operations LLC | 117K | 3 | 6K |
| Gungoll, Carl E. Exploration LLC | 62K | 2 | 26.4K |
| Goodrock Natural Resources, LLC | 47.4K | 7 | 39.7K |
| Golden Oil and Ranch, LLC | 41.3K | 1 | 500 |
| DJ & T Services, LLC | 34.3K | 1 | 2K |
| Chisholm Operating, Inc. | 33.1K | 1 | 1K |
| Williams Oil Company | 28.9K | 1 | 1K |
| Flat Top Operating, LLC | 24.1K | 1 | 10K |
| VX Operating, LLC | 15K | 1 | 500 |
| Nec Operating, LLC | 13.8K | 1 | 300 |
Injection permits
851 UIC PERMITS · 196 ACTIVE · PAGE 2 OF 9
Active permits first, by reported volume, then canceled, plugged, and never-activated permits.
| Well | Operator | Status | Purpose | Reported, bbl | bbl/d permitted | Zone, ft | Permitted |
|---|---|---|---|---|---|---|---|
| Dickson #1092 | RMB Operating LLC | Active | Disposal | 1.48K | 3,000 | 4,754–4,850 | Mar 25, 1999 |
| McElmurray, A. H. #6 | Cedar Oil Company | Active | Disposal | 1.33K | 1,500 | 3,100–3,600 | Apr 9, 1986 |
| Lister, Wayne #2 | Gallo Petroleum, LLC | Active | Disposal | 1.25K | 120 | 3,514–3,524 | May 23, 1995 |
| McElmurray, A. H. #5 W | Cedar Oil Company | Active | Disposal | 649 | 1,000 | 5,200–5,600 | Nov 30, 2012 |
| McElmurray, C.L. -A- #2 | Cedar Oil Company | Active | Disposal | 191 | 1,000 | 3,150–3,220 | Apr 4, 2012 |
| Boyd 'B' #13 | O'Ryan Oil and Gas | Active | Disposal | 150 | 1,000 | 5,989–6,045 | Nov 5, 1980 |
| County Line South #1 | Extex Operating Company | Active | Disposal | 21 | 2,000 | 5,208–5,222 | May 3, 2019 |
| Pete Frymire A #1 | Gungoll, Carl E. Exploration LLC | Active | Disposal | — | 20,000 | 6,748–7,100 | Aug 29, 2022 |
| Sears Streater #W 1 | Presley Prod Investments, LLC | Active | Disposal | — | 15,000 | 3,450–3,620 | Mar 17, 2017 |
| TXL #1SW | O'Ryan Oil and Gas | Active | Disposal | — | 12,000 | 2,500–6,150 | Oct 13, 2014 |
| Jordan, R. H. -A- #20 | Goodrock Natural Resources, LLC | Active | Disposal | — | 10,000 | 4,540–5,070 | Nov 10, 2004 |
| Hanks, Billie -A- #39 | Goodrock Natural Resources, LLC | Active | Disposal | — | 7,500 | 4,260–5,090 | Aug 31, 2001 |
| Hyde #1D | Clear Fork, Incorporated | Active | Disposal | — | 4,000 | 2,854–2,950 | Sep 27, 2011 |
| TXL #10 | O'Ryan Oil and Gas | Active | Disposal | — | 3,500 | 3,455–3,798 | Jun 1, 1987 |
| Southwest Nena Lucia Unit #4618 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 3,000 | 6,940–7,150 | Jan 31, 2020 |
| Group 4000 Unit "A" #14 | Winchester Energy, LLC | Active | Enhanced recovery | — | 2,600 | 4,042–4,046 | Jan 20, 1993 |
| Southwest Nena Lucia Unit #3510 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,696–6,957 | Apr 24, 1996 |
| Southwest Nena Lucia Unit #1604W | Citation Oil & Gas Corp. | Active | Disposal | — | 2,500 | 6,991–7,133 | Apr 24, 1996 |
| Boyd 'B' #20 | O'Ryan Oil and Gas | Active | Disposal | — | 2,500 | 5,989–6,086 | Mar 8, 1983 |
| Southwest Nena Lucia Unit #3802A | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,944–7,040 | Feb 9, 2011 |
| Southwest Nena Lucia Unit #1402W | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,800–6,924 | Apr 24, 1996 |
| Southwest Nena Lucia Unit #4502 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,980–7,048 | May 1, 2009 |
| Southwest Nena Lucia Unit #2206 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,850–7,100 | Apr 24, 1996 |
| Southwest Nena Lucia Unit #3123 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,850–7,100 | Apr 24, 1996 |
| Southwest Nena Lucia Unit #3827 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,850–7,050 | Apr 24, 1996 |
| Southwest Nena Lucia Unit #4005 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,850–7,050 | Apr 24, 1996 |
| Southwest Nena Lucia Unit #2322 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,850–7,100 | Jun 28, 1996 |
| Southwest Nena Lucia Unit #3828 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,850–7,092 | Aug 6, 2021 |
| Southwest Nena Lucia Unit #4822 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,500 | 6,900–7,100 | Jun 28, 1996 |
| Jordan, R. H. #13 | Goodrock Natural Resources, LLC | Active | Disposal | — | 2,281 | 4,562–5,005 | Jun 14, 2005 |
| TXL #9 | O'Ryan Oil and Gas | Active | Disposal | — | 2,000 | 3,500–3,725 | Nov 21, 1979 |
| Southwest Nena Lucia Unit #1201 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,000 | 6,830–7,040 | Mar 28, 1997 |
| Southwest Nena Lucia Unit #1213 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,000 | 6,700–7,350 | Mar 7, 2017 |
| Southwest Nena Lucia Unit #2107 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,000 | 6,900–7,030 | Mar 28, 1997 |
| Southwest Nena Lucia Unit #3517 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,000 | 6,700–7,100 | Nov 28, 2011 |
| Southwest Nena Lucia Unit #3829 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,000 | 6,850–7,030 | Mar 28, 1997 |
| Southwest Nena Lucia Unit #4821 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 2,000 | 6,900–7,000 | Mar 28, 1997 |
| Boyd 'B' #28 | O'Ryan Oil and Gas | Active | Disposal | — | 1,700 | 4,055–4,185 | Nov 5, 1981 |
| Lake Trammel Unit #20 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,353–5,385 | Jun 4, 2014 |
| Lake Trammel Unit #38 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,048–5,262 | Jan 24, 2011 |
| Lake Trammel Unit #44 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 4,900–5,600 | Sep 12, 2013 |
| Lake Trammel Unit #48 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,275–5,445 | Oct 16, 2013 |
| North Nena Lucia Unit #37 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 1,500 | 6,860–6,942 | May 27, 1969 |
| Lake Trammel Unit #21W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 4,900–5,600 | Sep 12, 2013 |
| Lake Trammel Unit #32W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,330–5,440 | May 14, 2012 |
| Lake Trammel Unit #33 W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,240–5,453 | Jul 19, 2012 |
| Lake Trammel Unit #43 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,036–5,277 | May 14, 2012 |
| Lake Trammel Unit #64W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,210–5,430 | Jan 24, 2011 |
| Lake Trammel Unit #53 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,232–5,434 | May 14, 2012 |
| Lake Trammel Unit #400 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,323–5,551 | Jul 24, 2012 |
| Lake Trammel Unit #27 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,070–5,314 | May 14, 2012 |
| Lake Trammel Unit #31 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,200–5,500 | Jul 24, 2012 |
| Lake Trammel Unit #51W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 4,900–5,600 | Jan 7, 2015 |
| Lake Trammel Unit #126 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,209–5,339 | Jul 17, 2014 |
| North Nena Lucia Unit #3 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 1,200 | 6,924–7,019 | Jul 31, 1972 |
| North Nena Lucia Unit #63 | Citation Oil & Gas Corp. | Active | Enhanced recovery | — | 1,200 | 6,500–7,080 | Nov 19, 2015 |
| Lake Trammel Unit #8 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,235–5,285 | Mar 23, 2019 |
| Lake Trammel Unit #23 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,200–5,206 | Feb 25, 2015 |
| Lake Trammel Unit #42 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,168–5,221 | Jan 13, 2014 |
| Lake Trammel Unit #54 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,206–5,358 | May 29, 2012 |
| Lake Trammel Unit #58 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,075–5,236 | May 14, 2012 |
| Lake Trammel Unit #62 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,102–5,187 | May 29, 2012 |
| Lake Trammel Unit #77 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,350–5,402 | Feb 25, 2015 |
| Lake Trammel Unit #79 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,216–5,336 | Jul 24, 2012 |
| Killgore #1 | Rigged UP, LLC | Active | Disposal | — | 1,000 | 6,142–6,150 | Feb 15, 2002 |
| Frymire Waterflood Unit #7 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 4,967–5,262 | Oct 20, 2013 |
| Lake Trammel Unit #103 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,150–5,350 | Jul 24, 2012 |
| Lake Trammel Unit #3 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,200–5,300 | Jul 19, 2012 |
| Hill-Jordan B-5 #1 | Mag Exploration LLC | Active | Disposal | — | 1,000 | 4,066–4,086 | Jun 21, 2006 |
| Lake Trammel Unit #92W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,140–5,188 | Apr 4, 2019 |
| Lake Trammel Unit #94 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,264–5,296 | May 29, 2012 |
| Lake Trammel Unit #7 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,200–5,314 | May 14, 2012 |
| Lake Trammel Unit #9 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,210–5,290 | Sep 5, 2012 |
| Lake Trammel Unit #74 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,109–5,300 | May 30, 2012 |
| Lake Trammel Unit #80 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,165–5,320 | May 30, 2012 |
| Lake Trammel Unit #39W | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,068–5,224 | Aug 24, 2012 |
| Lake Trammel Unit #108 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,000 | 5,207–5,435 | May 30, 2012 |
| Kegans #1A | RHB Exploration & Production,llc | Active | Disposal | — | 1,000 | 2,900–3,300 | Apr 16, 2012 |
| Bridgford #3 | Rigged UP, LLC | Active | Disposal | — | 1,000 | 6,041–6,058 | Nov 14, 2016 |
| Victoria #2 | Alumni Oil LLC | Active | Disposal | — | 800 | 5,062–5,132 | Mar 15, 2005 |
| Joe Young #16 | Scout Energy Management LLC | Active | Enhanced recovery | — | 750 | 5,600–5,700 | Jan 7, 2025 |
| Frymire Waterflood Unit #5 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 600 | 5,224–5,274 | May 13, 1994 |
| TXL -K- #4 | Rigged UP, LLC | Active | Disposal | — | 500 | 4,570–4,580 | Apr 4, 1966 |
| Joe Young #3 | Scout Energy Management LLC | Active | Enhanced recovery | — | 500 | 5,651–5,661 | Feb 19, 2009 |
| Joe Young #9 | Scout Energy Management LLC | Active | Enhanced recovery | — | 500 | 5,614–5,622 | Feb 19, 2009 |
| Joe Young #11 | Scout Energy Management LLC | Active | Enhanced recovery | — | 500 | 5,630–5,638 | Feb 19, 2009 |
| Joe Young #14 | Scout Energy Management LLC | Active | Enhanced recovery | — | 500 | 5,617–5,727 | Nov 13, 2009 |
| Sims #2 | Scout Energy Management LLC | Active | Enhanced recovery | — | 500 | 5,600–5,700 | Aug 26, 2010 |
| Jordan SWD #2SW | Older Than Dirt LLC | Active | Disposal | — | 500 | 3,662–3,664 | Aug 27, 2020 |
| Lake Trammel Unit #29 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 488 | 5,136–5,247 | Jul 17, 1961 |
| Frymire Waterflood Unit #18 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 400 | 5,170–5,211 | Jul 15, 2002 |
| South Lake Trammel Unit #30 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 300 | 5,100–5,262 | May 3, 2011 |
| Joe Young #12 | Scout Energy Management LLC | Active | Enhanced recovery | — | 2,000 | 4,104–4,114 | Aug 30, 2017 |
| Lake Trammel Unit #88 | Grayrock Energy II, LLC | Active | Enhanced recovery | — | 1,500 | 5,150–5,400 | Oct 16, 2013 |
| Reed #1 | Viejo Services, LLC | Active | Disposal | — | 1,000 | 3,700–3,746 | Nov 1, 2011 |
| Group 4000 Unit "A" #15 A | Winchester Energy, LLC | Active | Disposal | — | 900 | 3,981–3,991 | Oct 29, 2008 |
| Lake Trammel Unit #63 | Grayrock Energy II, LLC | Plugged | Enhanced recovery | 57.4K | 1,000 | 5,150–5,310 | May 30, 2012 |
| Lain #1 | Clear Fork, Incorporated | Plugged | Disposal | 2.76K | 10,000 | 4,277–6,100 | Jun 14, 2017 |
| Jordan, R. H. -A- #9 | Goodrock Natural Resources, LLC | Inactive | Disposal | — | 10,250 | 4,474–5,110 | Mar 10, 2009 |
| Hanks, Billie -A- #37 | Goodrock Natural Resources, LLC | Inactive | Disposal | — | 7,500 | 4,576–5,572 | Sep 14, 2005 |
Latest disposal drilling permits
W-1 drilling permits in the county tagged as produced-water disposal.
| Issued | Permit | Operator | Lease / well |
|---|---|---|---|
| Apr 18, 2023 | 889364 | D.K.D. | Roscoe SWD #1 35333746 |
| Dec 15, 2015 | 812533 | Cinnabar Operating, LLC | Brooks Ranch SWD #1D 35332304 |
| Jul 28, 2015 | 808692 | Santa Rita Holdings, LLC | Cox SWD #1 35333575 |
| Jun 1, 1981 | 119677 | A & a Transports, Inc. | Sears, Lance "A" #1 D 35330140 |
| Oct 17, 1979 | 60929 | Price, W. H. | Whiteside #2D 35330739 |
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/nolan, documented in the API reference.