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 6 OF 9

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

WellOperatorStatusPurposeReported, bblbbl/d permittedZone, ftPermitted
North Nena Lucia Unit #13Oryx Energy CompanyCanceledEnhanced recovery—1,2006,915–6,925Jul 31, 1972
North Nena Lucia Unit #20Oryx Energy CompanyCanceledEnhanced recovery—1,2006,926–7,007Jul 31, 1972
North Nena Lucia Unit #22Kerr-McGee Oil & Gas Onshore LLCCanceledEnhanced recovery—1,2006,842–6,940Jul 31, 1972
North Nena Lucia Unit #26Aethon I LPCanceledEnhanced recovery—1,2006,930–6,950Jul 31, 1972
North Nena Lucia Unit #32Oryx Energy CompanyCanceledEnhanced recovery—1,2006,858–6,924Jul 31, 1972
North Nena Lucia Unit #33Oryx Energy CompanyCanceledEnhanced recovery—1,2006,896–6,933Jul 31, 1972
North Nena Lucia Unit #57Oryx Energy CompanyCanceledEnhanced recovery—1,2006,801–6,845Jul 31, 1972
North Nena Lucia Unit #62Oryx Energy CompanyCanceledEnhanced recovery—1,2006,787–6,805Jul 31, 1972
North Nena Lucia Unit #78Oryx Energy CompanyCanceledEnhanced recovery—1,2006,804–6,896Jul 31, 1972
North Nena Lucia Unit #92Oryx Energy CompanyCanceledEnhanced recovery—1,2006,834–6,870Apr 18, 1980
North Nena Lucia Unit #95Oryx Energy CompanyCanceledEnhanced recovery—1,2006,864–6,879Jul 31, 1972
North Nena Lucia Unit #99Wagner, Duer & Co.CanceledEnhanced recovery—1,2006,779–6,832Jul 31, 1972
South Neill Unit-South #1Veneto Exploration, LLCPluggedEnhanced recovery—1,2005,716–5,724Feb 9, 1989
South Neill Unit-South #2Veneto Exploration, LLCPluggedEnhanced recovery—1,2005,731–5,747Feb 9, 1989
South Neill Unit-South #3Veneto Exploration, LLCCanceledEnhanced recovery—1,2005,788–5,796Jun 1, 1989
South Neill Unit-South #7Feagan Energy, Inc.CanceledEnhanced recovery—1,2005,742–5,752May 31, 1989
South Neill Unit-South #8Feagan Energy, Inc.CanceledEnhanced recovery—1,2005,684–5,696Jun 1, 1989
South Neill Unit-South #3WTexstar North America, Inc.CanceledEnhanced recovery—1,2005,788–5,796Jun 1, 1989
South Neill Unit-South #5Feagan Energy, Inc.CanceledEnhanced recovery—1,2005,735–5,741Jun 1, 1989
South Neill Unit-South #4 AFeagan Energy, Inc.CanceledEnhanced recovery—1,2005,762–5,777Jun 14, 1990
McReynolds #3Sojourner Drilling CorporationPluggedDisposal—1,2003,276–3,292Feb 19, 2002
TXL -L- #1Texaco Inc.PluggedEnhanced recovery—1,2006,048–6,050Nov 5, 1973
South Neill Unit-South #4Texstar Energy Operators, Inc.PluggedEnhanced recovery—1,2005,765–5,771Feb 9, 1989
North Nena Lucia Unit #112Getty Oil Co.PluggedEnhanced recovery—1,2006,904–6,939May 15, 1980
Smith, C.L. #1Unit Petroleum CompanyPluggedDisposal—1,1504,620–4,650Nov 17, 1997
Boyd,c.e., Etal Palo Pinto Unit #144Hunt Oil CompanyCanceledEnhanced recovery—1,0005,696–5,701Jul 10, 1972
Boyd, Wayne #1 DNueve Operating Co. of TexasCanceledDisposal—1,0003,684–3,728Apr 28, 1969
Lake Trammel Unit #15Merit Energy CompanyPluggedEnhanced recovery—1,0005,276–5,355May 29, 2012
Rowan & Hope Unit #33Williams Oil CompanyCanceledEnhanced recovery—1,0006,142–6,333Jun 25, 1956
McElmurray, A. H. #3AtapcoCanceledDisposal—1,0003,350–3,370Feb 22, 1972
Little, Jessie #2 THydrocarbon Services, Inc.CanceledDisposal—1,0003,250–3,400Aug 31, 1970
Bloodworth NE Canyon Unit #811J V A Operating Company, Inc.PluggedEnhanced recovery—1,0005,702–5,832Aug 17, 1981
Gibson R.H. #3Texfel Petroleum Corp.CanceledDisposal—1,0004,480–4,520Apr 29, 1982
Faver #1Galleria Oil Company, Inc.CanceledDisposal—1,0003,805–3,844Jan 30, 1984
Lake Sweetwater Strawnodom) Unit #2Encore Energy, Inc.CanceledEnhanced recovery—1,0005,810–5,824Sep 13, 1985
Lake Sweetwater Strawnodom) Unit #26Kelt Oil & Gas, Inc.CanceledEnhanced recovery—1,0005,872–5,896Sep 13, 1985
Alderman, Mary L. #1United Operating, LLC ***CanceledDisposal—1,0004,695–5,500Jul 21, 1986
Rowan & Hope Unit #17Williams Oil CompanyPluggedDisposal—1,0006,200Jun 25, 1966
Rowan & Hope Unit #34Williams Oil CompanyPluggedDisposal—1,0006,200—
Rowan & Hope Unit #92Williams Oil CompanyPluggedDisposal—1,0006,200Jun 25, 1956
Petty "B" #1Pioneer Exploration, Ltd.CanceledDisposal—1,0003,926–3,980Jul 26, 1993
Michaels #1Adkins, R. L. Corp.CanceledDisposal—1,0003,517–3,523Jan 29, 1991
Lamkin, C.W. #1Blake Resources, Inc.CanceledDisposal—1,0004,494–4,550Dec 17, 1992
Cochran, J. H. #8ARobertson Resources, Inc.CanceledDisposal—1,0004,118–4,125Apr 29, 1996
Howard #4CTrilogy Operating, Inc.CanceledDisposal—1,0003,175–3,728Nov 15, 1999
Nolan D Fee #2Pioneer Exploration, Ltd.PluggedDisposal—1,0004,636–4,644Apr 23, 2003
Lake Sweetwater Strawnodom) Unit #40Mid-Con Energy Operating, LLCPluggedEnhanced recovery—1,0005,850–5,900Apr 11, 2007
Lake Sweetwater Strawnodom) Unit #41Mid-Con Energy Operating, LLCPluggedEnhanced recovery—1,0005,830–5,890Apr 11, 2007
Lake Sweetwater Strawnodom) Unit #44Mid-Con Energy Operating, LLCPluggedEnhanced recovery—1,0005,836–5,900Apr 11, 2007
Frymire Waterflood Unit #23Grayrock Energy II, LLCInactiveEnhanced recovery—1,0005,200–5,300Aug 6, 2007
Frymire Waterflood Unit #24Grayrock Energy II, LLCInactiveEnhanced recovery—1,0005,200–5,300Aug 6, 2007
Lake Trammel Unit #82Grayrock Energy II, LLCInactiveEnhanced recovery—1,0004,990–5,200Jul 19, 2012
Wells, Francis #1WIMerit Energy CompanyPluggedDisposal—1,0005,300–5,600Feb 7, 2008
South Lake Trammel Unit #51Grayrock Energy II, LLCCanceledEnhanced recovery—1,0005,200–5,400Apr 30, 2008
South Lake Trammel Unit #52Grayrock Energy II, LLCInactiveEnhanced recovery—1,0005,150–5,400Apr 30, 2008
South Lake Trammel Unit #53Grayrock Energy II, LLCInactiveEnhanced recovery—1,0005,100–5,300Apr 30, 2008
South Lake Trammel Unit #55Grayrock Energy II, LLCInactiveEnhanced recovery—1,0005,220–5,350Apr 30, 2008
Lake Trammel Unit #109Grayrock Energy II, LLCInactiveEnhanced recovery—1,0005,250–5,450Sep 16, 2008
Joe Young #7RScout Energy Management LLCInactiveEnhanced recovery—1,0004,127–4,135Aug 30, 2017
Paige #1Walter Exploration CompanyPluggedDisposal—1,0003,265–3,285Jul 23, 2009
Arledge, J.W. Est #1Finley Resources, Inc.PluggedDisposal—1,0003,850–6,740Sep 24, 2009
Joe Young #17Scout Energy Management LLCInactiveEnhanced recovery—1,0005,580–5,680May 10, 2010
Harrell, Bob "D" #2Boundary Ventures, Inc.CanceledDisposal—1,0006,374–6,426Jan 30, 2013
McElmurray, C.L. -A- #1Cedar Oil CompanyInactiveDisposal—1,0005,730–5,765Aug 22, 2012
McElmurray, C.L. -A- #3Cedar Oil CompanyInactiveDisposal—1,0005,710–5,740Aug 22, 2012
Capps #2Chisholm Operating, Inc.PluggedEnhanced recovery—1,0003,392–3,404Apr 1, 2015
Tema Little #7WIScout Energy Management LLCCanceledEnhanced recovery—1,0005,000–5,180Oct 24, 2017
McElmurray, W. W. -A- #6WIScout Energy Management LLCCanceledEnhanced recovery—1,0005,000–5,150May 19, 2017
McElmurray, W. W. -B- #5WIScout Energy Management LLCCanceledEnhanced recovery—1,0005,000–5,150May 19, 2017
R-H Penn Reef Unit #31Sun Exploration & Production Co.CanceledEnhanced recovery—1,0006,116–6,429Feb 4, 1969
R-H Penn Reef Unit #34Sun Exploration & Production Co.CanceledEnhanced recovery—1,0006,186–6,338Feb 4, 1969
R-H Penn Reef Unit #71Sun Exploration & Production Co.CanceledEnhanced recovery—1,0005,807–6,360Feb 4, 1969
Southwest Nena Lucia Unit #40 3Sun Expl. & Prod. Co.-MidlandCanceledEnhanced recovery—1,0006,962–6,992Jan 7, 1966
Southwest Nena Lucia Unit #43 4Sun Expl. & Prod. Co.-MidlandCanceledEnhanced recovery—1,0006,931–3,978Jan 7, 1966
Enexco #4Chisholm Operating, Inc.InactiveEnhanced recovery—1,0006,255–6,310May 31, 2022
Chitwood, Edward #1-A #1Four C Oil & Gas Corp.CanceledDisposal—9503,800–3,887Jun 24, 1977
Beckham, L.H. #2Bristol Resources CorporationCanceledDisposal—9003,721–3,790Oct 22, 1981
Rowan & Hope Southwest Unit #41Williams Oil CompanyPluggedEnhanced recovery—9006,264–6,354Nov 12, 1973
Good Hope Sand Unit #6Goodrock Natural Resources, LLCInactiveEnhanced recovery—9004,792–4,963Sep 22, 2025
Good Hope Sand Unit #7Goodrock Natural Resources, LLCInactiveEnhanced recovery—9005,014–5,054Sep 22, 2025
Witt, Percy #1Key Energy Services, Inc. PBDCanceledDisposal—8503,580–3,900Nov 30, 1998
Whiteside #2DCraruth Energy CorporationPluggedDisposal—8003,904–3,938Nov 8, 1982
Sears #1Richman Petroleum Corp.CanceledDisposal—8003,440–3,550Nov 12, 1980
Bloodworth NE Canyon Unit #304J V A Operating Company, Inc.CanceledEnhanced recovery—8005,694–5,716Jun 11, 1969
Bloodworth NE Canyon Unit #501WHyquest Energy, Inc.CanceledEnhanced recovery—8005,696–5,746Jun 11, 1969
Bloodworth NE Canyon Unit #804WJ V A Operating Company, Inc.CanceledEnhanced recovery—8005,676–5,740Sep 10, 1969
Bloodworth NE Canyon Unit #902WJ V A Operating Company, Inc.CanceledEnhanced recovery—8005,875–5,948Jun 11, 1969
George, W.M. #1DEnergex Inc.CanceledDisposal—8004,250–5,281Apr 29, 1981
Boothe "A" #1North American Drilling CorpCanceledDisposal—8003,713–3,724May 26, 1987
Duncan, Kenneth #1J.H. Oil, Inc. (A)CanceledDisposal—8003,530–3,570May 4, 1989
Nolan Fee #3Hawkins Oil, L.L.C.CanceledEnhanced recovery—7505,935–6,124Sep 28, 1981
Jordan Ranch #4Cockrell Production Co., Inc.PluggedDisposal—7504,970–5,000Nov 16, 1983
Carpenter, E.H. "A" #1Baron Energy Inc.CanceledEnhanced recovery—7502,820–2,826Jul 27, 2000
Cooper, J. B, #2WSharp Image Energy, Inc.CanceledDisposal—7504,214–4,352Oct 11, 2002
Sears, May -B- #1 DR. E. M. Drilling CompanyCanceledDisposal—7003,422–3,900Nov 19, 1986
Wallace "A" #1DSmith Pipe of AbileneCanceledDisposal—7006,957–7,100Sep 28, 1995
Group 4000 Unit #34D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,137–4,181May 15, 1969
Group 4000 Unit #38D. A. B. Oil Service, Inc.CanceledEnhanced recovery—6004,012–4,018Sep 27, 1966
NT-TXL #0004 HDelta Petroleum Inc.CanceledEnhanced recovery—6003,700–3,950Mar 13, 1967
Cox, E. S. #32L.C.S. Production CompanyCanceledEnhanced recovery—6005,300–5,600May 10, 2004

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.