Petrora

WATER · NOLAN COUNTY

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%)

01M2M2016201720182019202020212022202320242025

Who injects here

Operators with active permits in the county, by reported H-10 volume over the settled year.

OperatorReported, bblActive wellsCapacity bbl/d
Grayrock Energy II, LLC4M7185.8K
Scout Energy Management LLC3.87M1771.8K
R2Q Operating LLC1.12M1059.5K
D.K.D.866K563.5K
Clear Fork, Incorporated714K724K
Citation Oil & Gas Corp.433K2961.2K
Daylight Petroleum LLC333K25.5K
Patton, E. N. Oil Company, Inc.322K15K
Double M Petroproperties, Inc.260K28K
Sojourner Drilling Corporation197K317K
Lone Star Operations LLC111K36K
Gungoll, Carl E. Exploration LLC71.3K226.4K
Goodrock Natural Resources, LLC53.9K739.7K
Chisholm Operating, Inc.50.4K11K
Golden Oil and Ranch, LLC47.6K1500
Williams Oil Company28.5K11K
DJ & T Services, LLC24.9K12K
Shaida, John H.16.7K1250
VX Operating, LLC15.2K1500
Nec Operating, LLC14.6K1300

Injection permits

851 UIC PERMITS · 193 ACTIVE · PAGE 7 OF 9

Active permits first, by reported volume, then canceled, plugged, and never-activated permits.

WellOperatorStatusPurposeReported, bblbbl/d permittedZone, ftPermitted
Lake Trammel Unit #10L.C.S. Production CompanyPluggedEnhanced recovery—6005,210–5,274May 20, 2004
Lake Trammel Unit #11L.C.S. Production CompanyCanceledEnhanced recovery—6005,176–5,336May 20, 2004
Lake Trammel Unit #24L.C.S. Production CompanyCanceledEnhanced recovery—6005,198–5,350May 20, 2004
Lake Trammel Unit #73L.C.S. Production CompanyPluggedEnhanced recovery—6005,079–5,255May 20, 2004
Lake Trammel Unit #93L.C.S. Production CompanyCanceledEnhanced recovery—6005,194–5,248May 20, 2004
Sweetwater /Canyon Sand/ Unit #34Pittencrieff America, Inc.CanceledEnhanced recovery—6005,171–5,186Apr 4, 1960
McRorey, Juanita Rogers #1Encore Energy, Inc.PluggedDisposal—6004,625–4,734Jul 2, 1981
Lake Trammel Unit #19L.C.S. Production CompanyCanceledEnhanced recovery—6005,294–5,354May 20, 2004
Group 4000 Unit #19D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,000–4,006—
Group 4000 Unit #23D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,036–4,045May 15, 1969
Group 4000 Unit #27D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,001–4,029May 15, 1969
Group 4000 Unit #41D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,186–4,192May 15, 1969
Group 4000 Unit #1D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,024–4,044—
Group 4000 Unit #2D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,091–4,095Sep 27, 1966
Group 4000 Unit #3D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,159–4,196Sep 27, 1966
Group 4000 Unit #8D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,011–4,029Sep 27, 1966
Group 4000 Unit #13D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,143–4,148Sep 27, 1966
Group 4000 Unit #28D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6003,994–4,000Sep 27, 1966
Group 4000 Unit #33D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,197–4,203Sep 27, 1966
Group 4000 Unit #42D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,101–4,122Sep 27, 1966
Frymire Waterflood Unit #3Cockrell Production Co., Inc.CanceledEnhanced recovery—6005,229–5,241May 13, 1994
Frymire Waterflood Unit #10Cockrell Production Co., Inc.CanceledEnhanced recovery—6005,218–5,232May 13, 1994
Frymire Waterflood Unit #11Cockrell Production Co., Inc.CanceledEnhanced recovery—6005,247–5,260May 13, 1994
Frymire Waterflood Unit #1Grayrock Energy II, LLCInactiveEnhanced recovery—6005,264–5,275May 13, 1994
Frymire Waterflood Unit #19APlantation Operating, LLCPluggedEnhanced recovery—6005,207–5,217Apr 25, 1997
Cochran Estate #2Roark, Hooker & RoarkPluggedEnhanced recovery—6004,114–4,123May 27, 1969
Cochran Est. #9Foree & GuffeyCanceledEnhanced recovery—6004,010–4,020May 8, 1969
Brooks #2Scout Energy Management LLCInactiveEnhanced recovery—6004,161–4,170Jan 7, 2019
Boyd #2Scout Energy Management LLCInactiveEnhanced recovery—6004,140–4,152Feb 26, 2019
Boyd #3Scout Energy Management LLCInactiveEnhanced recovery—6004,240–4,248Feb 26, 2019
Rowan & Hope Southwest Unit #23Texaco Inc.PluggedEnhanced recovery—6006,300–6,338Mar 29, 1976
Boyd,c.e., Etal Palo Pinto Unit #544Hunt Oil CompanyCanceledEnhanced recovery—5005,768–5,800Jan 30, 1967
Spires #1202Hawk Production CompanyCanceledDisposal—5003,970–4,000Mar 3, 1989
Davis #1 DCockrell Production Co., Inc.CanceledDisposal—5003,945–3,965Aug 15, 1990
Bridgford #2Adkins, R. L. Corp.CanceledDisposal—5003,994–4,008Apr 4, 1986
Antilley, Frank #1 AMercury Exploration Co.CanceledDisposal—5004,720–4,730Dec 9, 1987
Arledge Ranch #2Finley Resources, Inc.PluggedEnhanced recovery—5006,760–6,766Dec 11, 1987
Brooks Unit #2Pride Energy CompanyCanceledEnhanced recovery—5005,364–5,550Feb 1, 1993
Petty, R. R. #2Atlas Operating LLCPluggedDisposal—5005,605–6,128Feb 21, 1989
Suggs-Hickman (Jennings) Unit #16IAtasca Resources, Inc.CanceledEnhanced recovery—5005,540–5,547Aug 23, 1990
Brooks Unit #5Clear Fork, IncorporatedCanceledEnhanced recovery—5005,334–5,525Feb 12, 1993
Suggs-Hickman (Jennings) Unit #15IAtasca Resources, Inc.CanceledEnhanced recovery—5005,590–5,600Aug 23, 1990
Group 4000 Unit #31Robertson Resources, Inc.CanceledEnhanced recovery—5004,126–4,147Apr 7, 1994
Trog-Nabers JL #4Atasca Resources, Inc.PluggedEnhanced recovery—5005,594–5,604Aug 23, 1990
Bunyard, J.B. #2Ohlhausen Oil CompanyCanceledDisposal—5006,426–6,592Mar 8, 1999
Boyd, (Caddo Conglomerate) Unit #4044RClear Fork, IncorporatedCanceledEnhanced recovery—5004,840–6,600Aug 21, 2001
Frymire Waterflood Unit #15Rover Petroleum Operating, LLCPluggedEnhanced recovery—5005,225–5,237Oct 7, 2003
Frymire Waterflood Unit #22Rover Petroleum Operating, LLCPluggedEnhanced recovery—5005,252–5,264Oct 7, 2003
TXL #3Trek Resources, Inc.PluggedDisposal—5004,050–4,090May 17, 2004
TXL #1Trek Resources, Inc.PluggedDisposal—5004,040–4,080May 17, 2004
Rojean -A- #2Mid-Con Energy Operating, LLCPluggedEnhanced recovery—5002,791–2,800Apr 19, 2007
Joe Young #6Scout Energy Management LLCInactiveEnhanced recovery—5005,756–5,764Feb 19, 2009
Joe Young #15Scout Energy Management LLCPluggedEnhanced recovery—5005,617–5,727Nov 13, 2009
Williamson, Wanda #1Telesis Operating Co., Inc.CanceledDisposal—5002,834–2,935May 12, 2009
Evb (Canyon Sand) Unit #1459Clear Fork, IncorporatedPluggedEnhanced recovery—5004,828–4,878Sep 12, 2012
Craig, Floyd Estate #1Cholla Petroleum, Inc.PluggedEnhanced recovery—5005,474–5,480Apr 10, 2013
Billie Hanks #2Texaco Inc.CanceledEnhanced recovery—5005,330–5,347Nov 18, 1969
Roscoe (Strawn) Unit #305Newmont Oil CompanyCanceledEnhanced recovery—5006,722–6,741Sep 1, 1971
W. D. Rayburn #1Sun Exploration & Production Co.CanceledEnhanced recovery—5005,972–5,990Apr 18, 1968
Rowan & Hope Unit #71Texaco Inc.PluggedEnhanced recovery—5006,140–6,310Feb 4, 1975
Rowan & Hope Unit #101Texaco Inc.PluggedEnhanced recovery—5006,144–6,348Jul 24, 1974
Freeman, J. M. #1Atlantic Richfield CompanyPluggedEnhanced recovery—5005,403–5,546Nov 30, 1972
Group 4000 Unit "A" #21 BWinchester Energy, LLCInactiveEnhanced recovery—5003,950–4,050May 6, 2021
Group 4000 Unit "A" #23AWinchester Energy, LLCInactiveEnhanced recovery—5003,950–4,050May 6, 2021
Group 4000 Unit "A" #16 AWinchester Energy, LLCInactiveEnhanced recovery—5003,950–4,050May 20, 2021
Lake Trammel Unit #1Eldorado Operating Co.CanceledEnhanced recovery—4885,278–5,299Apr 23, 1962
Lake Trammel Unit #4Brothers Operating Company Inc.CanceledEnhanced recovery—4885,201–5,325Sep 6, 1961
Lake Trammel Unit #6Brothers Operating Company Inc.CanceledEnhanced recovery—4885,302–5,458Sep 6, 1961
Lake Trammel Unit #21Brothers Operating Company Inc.CanceledEnhanced recovery—4885,326–5,440Sep 6, 1961
Lake Trammel Unit #32U.S. Capital Corp.of America,incPluggedEnhanced recovery—4885,330–5,449Sep 6, 1961
Lake Trammel Unit #50Brothers Operating Company Inc.CanceledEnhanced recovery—4885,300–5,455Sep 6, 1961
Lake Trammel Unit #60U.S. Capital Corp.of America,incCanceledEnhanced recovery—4885,018–5,098Jul 17, 1961
Lake Trammel Unit #64Brothers Operating Company Inc.CanceledEnhanced recovery—4885,160–5,371Sep 6, 1961
Lake Trammel Unit #71Brothers Operating Company Inc.CanceledEnhanced recovery—4885,030–5,213Apr 7, 1966
Lake Trammel Unit #75Brothers Operating Company Inc.CanceledEnhanced recovery—4885,242–5,320Sep 6, 1961
Lake Trammel Unit #84U.S. Capital Corp.of America,incPluggedEnhanced recovery—4885,178–5,234Aug 8, 1963
Arledge, J.W. Est "A" #2 ALeclair Operating Co., Inc.CanceledEnhanced recovery—4506,758–6,764Aug 2, 1976
Lister, Wayne #3Whitehall Operating Inc.CanceledEnhanced recovery—4503,594–3,609Aug 22, 1990
Barton #2B & F Operating Company, Inc.CanceledEnhanced recovery—4503,604–3,620Aug 30, 1990
Rowan & Hope Unit #35Williams Oil CompanyCanceledEnhanced recovery—4006,118–6,222Aug 14, 1972
Rowan & Hope Unit #41Williams Oil CompanyCanceledEnhanced recovery—4006,087–6,314Apr 20, 1972
Rowan & Hope Unit #51Williams Oil CompanyPluggedEnhanced recovery—4006,237–6,410Jun 25, 1956
Rowan & Hope Unit #93Williams Oil CompanyPluggedEnhanced recovery—4006,232–6,380Jun 25, 1956
Rowan & Hope Unit #112Williams Oil CompanyCanceledEnhanced recovery—4006,228–6,347Jun 25, 1966
Morris, J. C. Est. #2Rio Operating CompanyCanceledDisposal—4004,178–4,366Jun 16, 1983
Frymire Waterflood Unit #2Cockrell Production Co., Inc.CanceledEnhanced recovery—4005,237–5,252Nov 23, 1994
Lake Sweetwater Strawnodom) Unit #4DMid-Con Energy Operating, LLCPluggedDisposal—4003,684–3,728Jun 11, 1993
Pace, Elgie #3Walter Exploration Inc.CanceledDisposal—4003,770–3,840Sep 8, 1995
Rowan & Hope Southwest Unit #22Texaco Inc.CanceledEnhanced recovery—4006,230–6,334Apr 29, 1974
Boyd, Ethel et Al #1Adkins, R. L. Corp.CanceledDisposal—3503,550–3,890Apr 14, 1982
Duncan K #1Dunigan Petroleum, Inc.CanceledEnhanced recovery—3502,891–2,896Apr 12, 1991
Doris (Cook,upper) Unit #1453NCockrell Production Co., Inc.CanceledEnhanced recovery—3503,971–3,976May 14, 1993
Doris (Cook,upper) Unit #1451SCockrell Production Co., Inc.PluggedEnhanced recovery—3503,939–3,946Oct 27, 1995
Doris (Cook,upper) Unit #1642Cockrell Production Co., Inc.CanceledEnhanced recovery—3503,967–3,972Oct 27, 1995
Cochran Est. #14Robertson Resources, Inc.CanceledDisposal—3004,115–4,120Apr 20, 1972
Frymire #12Enexco, Inc.CanceledDisposal—3003,806–3,816Sep 8, 1978
Rowan & Hope Unit #13Williams Oil CompanyCanceledEnhanced recovery—3006,042–6,085May 25, 1973
Rowan & Hope Southwest Unit #33Williams Oil CompanyCanceledEnhanced recovery—3006,310–6,330Jul 21, 1965
South Lake Trammel Unit #7Betwell Oil & Gas CompanyCanceledEnhanced recovery—3005,208–5,264Aug 11, 1983
South Lake Trammel Unit #10L.C.S. Production CompanyCanceledEnhanced recovery—3005,242–5,329Nov 29, 1983

Latest disposal drilling permits

W-1 drilling permits in the county tagged as produced-water disposal.

IssuedPermitOperatorLease / well
Apr 18, 2023889364D.K.D.Roscoe SWD #1 35333746
Dec 15, 2015812533Cinnabar Operating, LLCBrooks Ranch SWD #1D 35332304
Jul 28, 2015808692Santa Rita Holdings, LLCCox SWD #1 35333575
Jun 1, 1981119677A & a Transports, Inc.Sears, Lance "A" #1 D 35330140
Oct 17, 197960929Price, 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.