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 193 active injection and disposal wells, 67 of them permitted for disposal, with 548,189 barrels a day of permitted capacity.
Operators reported 13 million barrels injected on H-10 filings in the twelve months to September 2025, up 1% on the year before, about 6% of what the permits allow.
Grayrock Energy II, LLC is the largest injector in the county, with 4.0 million barrels reported across 71 active wells.
- 193
- active injection wells, 67 for disposal
- 548K
- bbl/d permitted capacity
- 12.6M
- bbl reported, H-10 year to Sep 2025 +1%
- 6%
- of permitted capacity used
- 851
- UIC permits on file, all time
Reported injection, by month
H-10 FILINGS · TEN YEARS TO SEP 2025
Last 12 months 12,583,804 · prior 12 12,505,979(+1%)
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 | 4M | 71 | 85.8K |
| Scout Energy Management LLC | 3.87M | 17 | 71.8K |
| R2Q Operating LLC | 1.12M | 10 | 59.5K |
| D.K.D. | 866K | 5 | 63.5K |
| Clear Fork, Incorporated | 714K | 7 | 24K |
| Citation Oil & Gas Corp. | 433K | 29 | 61.2K |
| Daylight Petroleum LLC | 333K | 2 | 5.5K |
| Patton, E. N. Oil Company, Inc. | 322K | 1 | 5K |
| Double M Petroproperties, Inc. | 260K | 2 | 8K |
| Sojourner Drilling Corporation | 197K | 3 | 17K |
| Lone Star Operations LLC | 111K | 3 | 6K |
| Gungoll, Carl E. Exploration LLC | 71.3K | 2 | 26.4K |
| Goodrock Natural Resources, LLC | 53.9K | 7 | 39.7K |
| Chisholm Operating, Inc. | 50.4K | 1 | 1K |
| Golden Oil and Ranch, LLC | 47.6K | 1 | 500 |
| Williams Oil Company | 28.5K | 1 | 1K |
| DJ & T Services, LLC | 24.9K | 1 | 2K |
| Shaida, John H. | 16.7K | 1 | 250 |
| VX Operating, LLC | 15.2K | 1 | 500 |
| Nec Operating, LLC | 14.6K | 1 | 300 |
Injection permits
851 UIC PERMITS · 193 ACTIVE · PAGE 5 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 |
|---|---|---|---|---|---|---|---|
| Sisters #3W | Scout Energy Management LLC | Canceled | Enhanced recovery | — | 2,000 | 4,314–4,324 | Aug 16, 2017 |
| Blackstone #5 | Cholla Petroleum, Inc. | Canceled | Enhanced recovery | — | 2,000 | 5,490–5,576 | Sep 8, 2017 |
| Rojean #4 | Scout Energy Management LLC | Inactive | Enhanced recovery | — | 2,000 | 5,050–5,110 | Sep 18, 2017 |
| Southwest Nena Lucia Unit #38 3 | Sun Expl. & Prod. Co.-Midland | Canceled | Enhanced recovery | — | 2,000 | 6,968–7,022 | Dec 2, 1963 |
| Kegans 'A' #1 | RHB Exploration & Production,llc | Inactive | Disposal | — | 2,000 | 3,260–3,400 | Mar 10, 2025 |
| North Nena Lucia Unit #23 | FDL Operating, LLC | Plugged | Enhanced recovery | — | 1,800 | 6,750–6,973 | May 13, 2009 |
| Jordan, R.H. #4 | Pioneer Exploration, Ltd. | Plugged | Disposal | — | 1,500 | 4,820–4,840 | Feb 8, 1960 |
| South Lake Trammel Unit #1 | Lavanco Energy, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,086–5,144 | Apr 27, 1970 |
| South Lake Trammel Unit #2 | Betwell Oil & Gas Company | Canceled | Enhanced recovery | — | 1,500 | 5,239–5,252 | Apr 27, 1970 |
| South Lake Trammel Unit #4 | Betwell Oil & Gas Company | Canceled | Enhanced recovery | — | 1,500 | 5,248–5,268 | Apr 27, 1970 |
| South Lake Trammel Unit #6 | Allegro Operating, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,242–5,296 | Apr 27, 1970 |
| South Lake Trammel Unit #9 | Betwell Oil & Gas Company | Canceled | Enhanced recovery | — | 1,500 | 5,243–5,267 | Apr 27, 1970 |
| South Lake Trammel Unit #11 | Betwell Oil & Gas Company | Canceled | Enhanced recovery | — | 1,500 | 5,270–5,369 | Apr 27, 1970 |
| South Lake Trammel Unit #18 | Merit Energy Company | Plugged | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #20 | Betwell Oil & Gas Company | Canceled | Enhanced recovery | — | 1,500 | 5,185–5,266 | Apr 27, 1970 |
| South Lake Trammel Unit #40 | Betwell Oil & Gas Company | Canceled | Enhanced recovery | — | 1,500 | 5,174–5,216 | Apr 27, 1970 |
| North Nena Lucia Unit #19 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,918–6,966 | Jul 19, 1969 |
| North Nena Lucia Unit #40 | FDL Operating, LLC | Plugged | Enhanced recovery | — | 1,500 | 6,800–6,990 | Jul 13, 2010 |
| North Nena Lucia Unit #60 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,890–6,942 | Sep 24, 1969 |
| North Nena Lucia Unit #65 | Citation Oil & Gas Corp. | Canceled | Enhanced recovery | — | 1,500 | 6,700–7,000 | Feb 25, 2000 |
| North Nena Lucia Unit #93 | Oryx Energy Company | Canceled | Enhanced recovery | — | 1,500 | 6,825–6,866 | Sep 20, 1969 |
| Rowan & Hope Southwest Unit #31 | Williams Oil Company | Canceled | Disposal | — | 1,500 | 4,050–4,570 | Jan 27, 1989 |
| Whitaker, E. G. #2 D | Mid-Con Energy Operating, LLC | Plugged | Disposal | — | 1,500 | 3,050–3,360 | Aug 3, 1970 |
| TXL #2 | Union Pacific Resources Company | Canceled | Disposal | — | 1,500 | 3,550–3,785 | Feb 6, 1987 |
| Lake Sweetwater Strawnodom) Unit #1SW | Kelt Oil & Gas, Inc. | Canceled | Disposal | — | 1,500 | 3,712–3,788 | May 22, 1972 |
| South Lake Trammel Unit #31W | Grayrock Energy II, LLC | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Jan 3, 2012 |
| Southwest Nena Lucia Unit #2505W | Oryx Energy Company | Canceled | Enhanced recovery | — | 1,500 | 6,942–7,020 | Sep 7, 1990 |
| Lake Sweetwater Strawnodom) Unit #37 | L.C.S. Production Company | Plugged | Enhanced recovery | — | 1,500 | 5,970–6,007 | Jun 27, 1986 |
| Lake Sweetwater Strawnodom) Unit #22 | Encore Energy, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,891–5,923 | Jun 27, 1986 |
| Lake Sweetwater Strawnodom) Unit #32 | Kelt Oil & Gas, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,886–5,904 | Jun 27, 1986 |
| Lake Sweetwater Strawnodom) Unit #30 | Kelt Oil & Gas, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,950–5,962 | Jun 27, 1986 |
| Witt, Percy #2 | Encore Energy, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,904–5,914 | Dec 30, 1987 |
| Suggs-Hickman (Jennings) Unit #1 | Atasca Resources, Inc. | Plugged | Enhanced recovery | — | 1,500 | 5,580–5,630 | May 1, 1992 |
| Suggs-Hickman (Jennings) Unit #8 | Atasca Resources, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,580–5,620 | May 1, 1992 |
| Suggs-Hickman (Jennings) Unit #9 | Atasca Resources, Inc. | Plugged | Enhanced recovery | — | 1,500 | 5,557–5,575 | May 1, 1992 |
| Suggs-Hickman (Jennings) Unit #14 | Atasca Resources, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,560–5,590 | May 1, 1992 |
| Suggs-Hickman (Jennings) Unit #2 | Atasca Resources, Inc. | Plugged | Enhanced recovery | — | 1,500 | 5,600–5,625 | May 1, 1992 |
| Suggs-Hickman (Jennings) Unit #18I | Atasca Resources, Inc. | Canceled | Enhanced recovery | — | 1,500 | 5,600–5,625 | May 1, 1992 |
| Petty -A- #3 | Atlas Operating LLC | Plugged | Disposal | — | 1,500 | 6,108–6,118 | Jul 29, 1994 |
| North Nena Lucia Unit #201 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,700–7,000 | Apr 22, 1998 |
| North Nena Lucia Unit #203 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,700–7,000 | Apr 22, 1998 |
| North Nena Lucia Unit #208 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,700–7,000 | Apr 22, 1998 |
| North Nena Lucia Unit #212 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,700–7,000 | Apr 22, 1998 |
| North Nena Lucia Unit #207 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,650–6,950 | Apr 22, 1998 |
| Mink #1 | Lytle Creek Operating, Inc. | Canceled | Disposal | — | 1,500 | 4,250–4,550 | Jul 27, 1998 |
| North Nena Lucia Unit #206 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,730–7,030 | Feb 25, 2000 |
| North Nena Lucia Unit #210 | Kerr-McGee Oil & Gas Onshore LLC | Canceled | Enhanced recovery | — | 1,500 | 6,730–7,050 | Feb 25, 2000 |
| Lake Trammel Unit #140R | Grayrock Energy II, LLC | Inactive | Enhanced recovery | — | 1,500 | 5,334–5,480 | Sep 16, 2008 |
| Lake Trammel Unit #135 | Grayrock Energy II, LLC | Inactive | Enhanced recovery | — | 1,500 | 5,400–6,600 | Sep 16, 2008 |
| Lake Trammel Unit #1W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 4,900–5,600 | Sep 12, 2013 |
| Lake Trammel Unit #12W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,073–5,288 | Jan 24, 2011 |
| Lake Trammel Unit #25W | Merit Energy Company | Plugged | Enhanced recovery | — | 1,500 | 5,120–5,172 | Aug 4, 2014 |
| Lake Trammel Unit #26W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,101–5,302 | Jan 24, 2011 |
| Lake Trammel Unit #36W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,161–5,371 | Jan 24, 2011 |
| Lake Trammel Unit #37 | Merit Energy Company | Plugged | Enhanced recovery | — | 1,500 | 5,041–5,269 | Jan 24, 2011 |
| Lake Trammel Unit #60W | Grayrock Energy II, LLC | Canceled | Enhanced recovery | — | 1,500 | 5,021–5,094 | Jul 28, 2014 |
| Lake Trammel Unit #61W | Grayrock Energy II, LLC | Canceled | Enhanced recovery | — | 1,500 | 5,070–5,198 | Jul 28, 2014 |
| Lake Trammel Unit #75W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,238–5,432 | Jan 24, 2011 |
| Lake Trammel Unit #89W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,285–5,528 | Jan 24, 2011 |
| Lake Trammel Unit #91W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 4,900–5,600 | Sep 12, 2013 |
| Lake Trammel Unit #401 | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,362–5,569 | Feb 14, 2011 |
| Lake Trammel Unit #18 | Plantation Operating, LLC | Plugged | Enhanced recovery | — | 1,500 | 5,285–5,512 | Sep 24, 2010 |
| Lake Trammel Unit #90 | Merit Energy Company | Plugged | Enhanced recovery | — | 1,500 | 5,210–5,411 | Sep 24, 2010 |
| Lake Trammel Unit #13 | Merit Energy Company | Plugged | Enhanced recovery | — | 1,500 | 5,174–5,400 | Dec 6, 2010 |
| Lake Trammel Unit #40 | Grayrock Energy II, LLC | Inactive | Enhanced recovery | — | 1,500 | 5,075–5,316 | Dec 6, 2010 |
| Lake Trammel Unit #67W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,008–5,237 | Dec 6, 2010 |
| South Lake Trammel Unit #1W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Sep 20, 2011 |
| South Lake Trammel Unit #3W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Sep 20, 2011 |
| South Lake Trammel Unit #25W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Sep 29, 2011 |
| South Lake Trammel Unit #58 | Grayrock Energy II, LLC | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Sep 29, 2011 |
| South Lake Trammel Unit #35W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Sep 29, 2011 |
| South Lake Trammel Unit #59W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Sep 29, 2011 |
| South Lake Trammel Unit #14W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #15W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #16W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #22W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #23W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #24W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #33W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #34 | Grayrock Energy II, LLC | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #43W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #9W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #11W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #17W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #20W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #21W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #28 | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #37W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #38W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| South Lake Trammel Unit #64 | Grayrock Energy II, LLC | Inactive | Enhanced recovery | — | 1,500 | 5,000–5,400 | Oct 4, 2011 |
| Lake Trammel Unit #13W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 4,900–5,600 | Sep 9, 2013 |
| Lake Trammel Unit #4W | Merit Energy Company | Canceled | Enhanced recovery | — | 1,500 | 4,900–5,600 | Sep 12, 2013 |
| Lake Trammel Unit #225 | Grayrock Energy II, LLC | Inactive | Enhanced recovery | — | 1,500 | 5,175–5,285 | Sep 9, 2014 |
| Tema Little #2 | Scout Energy Management LLC | Inactive | Enhanced recovery | — | 1,500 | 5,066–5,114 | Apr 28, 2016 |
| Tema Little #3 | Scout Energy Management LLC | Inactive | Enhanced recovery | — | 1,500 | 5,110–5,180 | Apr 28, 2016 |
| Louie "A" #2 | Heights Energy Corporation | Plugged | Disposal | — | 1,440 | 5,310–5,366 | Jul 19, 2006 |
| Hanks, Billie -A- #8 | Coda Energy, Inc. | Canceled | Disposal | — | 1,400 | 4,630–4,680 | Mar 2, 1965 |
| North Nena Lucia Unit #1 | Oryx Energy Company | Canceled | Enhanced recovery | — | 1,200 | 6,932–6,987 | Jul 31, 1972 |
| North Nena Lucia Unit #9 | Patterson Petroleum, Inc. | Canceled | Enhanced recovery | — | 1,200 | 6,896–6,994 | Nov 22, 1961 |
| North Nena Lucia Unit #10 | Sheridan Production Company, LLC | Plugged | Enhanced recovery | — | 1,200 | 6,873–6,965 | Jul 31, 1972 |
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 Sep 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.