Petrora

WATER · STARR COUNTY

Produced water and disposal in Starr 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 →

Starr County has 49 active injection and disposal wells, 43 of them permitted for disposal, with 193,150 barrels a day of permitted capacity.

Operators reported 4.2 million barrels injected on H-10 filings in the twelve months to June 2025, up 4% on the year before, about 6% of what the permits allow.

Merit Energy Company is the largest injector in the county, with 2.9 million barrels reported across 10 active wells.

49
active injection wells, 43 for disposal
193K
bbl/d permitted capacity
4.16M
bbl reported, H-10 year to Jun 2025 +4%
6%
of permitted capacity used
424
UIC permits on file, all time

Reported injection, by month

H-10 FILINGS · TEN YEARS TO JUN 2025

Last 12 months 4,158,379 · prior 12 3,984,548(+4%)

01M2M3M2016201720182019202020212022202320242025

Who injects here

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

OperatorReported, bblActive wellsCapacity bbl/d
Merit Energy Company2.85M1048K
Southern Tejas Asset Group LLC486K417.8K
Killam Oil Co., Ltd.226K38.5K
R360 Env Solutions of TX, LLC148K110K
Petrovybe Opco LLC146K16K
Hilcorp Energy Company75.3K721.2K
Dewbre Petroleum Corporation40.6K15K
Trap Rock Oil, Ltd.40.5K312K
Mountain V Texas, LLC32.4K724.6K
Mortimer Production Company31.9K15K
Starr Operating, LLC25.8K1500
Faulconer Energy, LLC25.1K1750
Escudo Oil & Gas, LLC24.1K12K
L & B Oil and Gas Equipment, LLC3.34K1300
Orx Resources, L.L.C.1.89K23.5K
Vac Stop SWD, LLC—317K
Alpha Oil & Gas LLC—110K
Wagner Oil Company—11K

Injection permits

424 UIC PERMITS · 49 ACTIVE · PAGE 3 OF 5

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

WellOperatorStatusPurposeReported, bblbbl/d permittedZone, ftPermitted
Slick, T. B. -B- Est. #59Continental Oil CompanyPluggedEnhanced recovery—8003,960–3,998Dec 28, 1964
Slick, T. B. -B- Est. #69Continental Oil CompanyCanceledEnhanced recovery—8004,000–4,012Dec 28, 1964
Slick, T. B. -B- Est. #62Continental Oil CompanyCanceledEnhanced recovery—8004,019–4,052Dec 28, 1964
Slick, T. B. -B- Est. #107Continental Oil CompanyPluggedEnhanced recovery—8003,845–3,870Dec 28, 1964
Villarreal #19WEnergy Development Corp.CanceledEnhanced recovery—7506,475–6,488Jun 17, 1980
Martinez -A- #1Goldking Prod. Co.CanceledDisposal—7503,950–4,022Apr 2, 1986
McGill Bros. #131 CHumble Oil & Refining Co.PluggedEnhanced recovery—7255,941–5,952Feb 26, 1970
McGill Bros. #102Humble Oil & Refining Co.PluggedEnhanced recovery—7255,982–5,991Jan 9, 1969
McGill Bros. #125Humble Oil & Refining Co.PluggedEnhanced recovery—7255,961–5,971Jan 9, 1969
Frio D-5 Unit #60Continental Oil CompanyCanceledEnhanced recovery—7003,874–3,878Jan 17, 1973
Frio D-5 Unit #64Consolidated Oil & Gas, Inc.CanceledEnhanced recovery—7003,872–3,923Oct 24, 1972
Frio D-5 Unit #37Conoco Inc.CanceledEnhanced recovery—7003,793–3,829Jan 17, 1973
Frio D-5 Unit #40Conoco Inc.CanceledEnhanced recovery—7003,896–3,930Jan 17, 1973
First National Bank of Mission #8Energy Development Corp.CanceledDisposal—7006,405–6,438Mar 11, 1981
Frio E-3 Unit #73Conoco Inc.CanceledEnhanced recovery—7003,924–3,940Jun 12, 1973
Frio D-5 Unit #38Continental Oil CompanyCanceledEnhanced recovery—7003,795–3,805Jan 17, 1973
Frio D-5 Unit #11Continental Oil CompanyPluggedEnhanced recovery—7003,870–3,903Oct 24, 1972
Frio D-5 Unit #25Continental Oil CompanyPluggedEnhanced recovery—7003,859–3,867Oct 24, 1972
Slick-State #2 CCTR Petroleum, Inc.CanceledDisposal—6334,744–4,754Dec 6, 1985
Zachry, H. B., Etal #4Dugger, GlennCanceledEnhanced recovery—600670–674Sep 24, 1970
Hinojosa, Medardo -B- Roy. A/C#1 #19BOrphan Wells, LLCCanceledEnhanced recovery—6001,375–1,384Oct 26, 1978
Hinojosa, Medardo -B- Roy. A/C#1 #20BWhite Oak Operating Company LLCCanceledEnhanced recovery—6001,370–1,380Oct 26, 1978
Hinojosa, Medardo -B- Roy. A/C#1 #25BWhite Oak Operating Company LLCCanceledEnhanced recovery—6001,381–1,389Oct 26, 1978
Hinojosa, Medardo -B- Roy. A/C#2 #12White Oak Operating Company LLCCanceledEnhanced recovery—6001,367–1,385Oct 26, 1978
Frio E-3 Unit #81Conoco Inc.CanceledEnhanced recovery—6003,860–3,879Dec 9, 1975
Coates Minerals #3Samson Lone Star LPPluggedDisposal—6003,508–3,550Apr 13, 1978
Yturria L&L -A- #3Oryx Energy CompanyCanceledDisposal—6004,207–4,215Jun 30, 1993
Coates Estate #3Harkins & CompanyCanceledDisposal—6003,508–3,550Apr 13, 1978
Cameron #14Cameron, Paul E., Jr., Inc.CanceledEnhanced recovery—6004,554–4,570Feb 16, 1989
Slick, T. B., Estate -A- #3Conoco Inc.CanceledEnhanced recovery—6004,040–4,072Dec 28, 1964
Slick, T. B., Estate -A- #4Conoco Inc.CanceledEnhanced recovery—6004,050–4,075Dec 28, 1964
Slick, T. B., Estate -A- #14Conoco Inc.CanceledEnhanced recovery—6004,095–4,108Dec 28, 1964
Slick, T. B., Estate -A- #66Conoco Inc.CanceledEnhanced recovery—6004,102–4,148Dec 28, 1964
Slick, T. B., Estate -A- #104Conoco Inc.CanceledEnhanced recovery—6004,066–4,082Dec 28, 1964
Slick, T. B., Estate -A- #106Conoco Inc.CanceledEnhanced recovery—6004,128–4,141Dec 28, 1964
Slick, T. B., Estate -A- #108Conoco Inc.CanceledEnhanced recovery—6003,654–4,116Dec 28, 1964
Slick, T. B., Estate -A- #110Conoco Inc.CanceledEnhanced recovery—6004,195–4,209Dec 28, 1964
Slick, T. B. -B- Est. #22Conoco Inc.CanceledEnhanced recovery—6004,042–4,090Dec 28, 1964
Slick, T. B. -B- Est. #23Conoco Inc.CanceledEnhanced recovery—6004,030–4,081Dec 28, 1964
Slick, T. B. -B- Est. #27Conoco Inc.CanceledEnhanced recovery—6004,073–4,088Dec 28, 1964
Slick, T. B. -B- Est. #28Conoco Inc.CanceledEnhanced recovery—6004,044–4,099Dec 28, 1964
Slick, T. B. -B- Est. #32Conoco Inc.CanceledEnhanced recovery—6004,090–4,115Dec 28, 1964
Slick, T. B. -B- Est. #34Conoco Inc.CanceledEnhanced recovery—6004,080–4,450Dec 28, 1964
Slick, T. B. -B- Est. #46Conoco Inc.CanceledEnhanced recovery—6004,042–4,090Dec 28, 1964
Slick, T. B. -B- Est. #60Conoco Inc.CanceledEnhanced recovery—6004,196–4,208Dec 28, 1964
Slick, T. B. -B- Est. #113Conoco Inc.CanceledEnhanced recovery—6004,140–4,172Dec 28, 1964
Slick, T. B. -B- Est. #133Conoco Inc.CanceledEnhanced recovery—6004,095–4,114Dec 28, 1964
Davenport, F. D. -A- #1 UContinental Oil CompanyCanceledEnhanced recovery—6004,026–4,077Dec 28, 1964
Davenport, F. D. -A- #2Continental Oil CompanyCanceledEnhanced recovery—6004,070–4,091Dec 28, 1964
Slick, T. B. -B- Est. #1Conoco Inc.CanceledEnhanced recovery—6004,026–4,077Nov 4, 1965
Frio E Unit -A- #9Continental Oil CompanyCanceledEnhanced recovery—6003,980–4,022Jul 6, 1972
Frio E Unit -A- #13Continental Oil CompanyCanceledEnhanced recovery—6003,928–3,926Jul 6, 1972
Frio E Unit -A- #109 MContinental Oil CompanyCanceledEnhanced recovery—6003,924–3,934Jul 6, 1972
Frio E Unit -B- #45Continental Oil CompanyPluggedEnhanced recovery—6003,784–3,800Jul 6, 1972
Frio E Unit -B- #600 UContinental Oil CompanyCanceledEnhanced recovery—6003,957–3,972Jul 6, 1972
Frio E Unit -B- #157 UConoco Inc.CanceledEnhanced recovery—5003,836–3,866—
Frio D-5 Unit #10Conoco Inc.CanceledEnhanced recovery—5003,809–3,855Feb 14, 1977
Frio D-5 Unit #20Conoco Inc.CanceledEnhanced recovery—5003,808–3,818Feb 14, 1977
Frio D-5 Unit #29Conoco Inc.CanceledEnhanced recovery—5003,716–3,772Feb 14, 1977
Frio D-5 Unit #33Conoco Inc.CanceledEnhanced recovery—5003,748–3,805Feb 14, 1977
Frio D-5 Unit #41Conoco Inc.CanceledEnhanced recovery—5003,768–3,781Feb 14, 1977
Frio D-5 Unit #48Conoco Inc.CanceledEnhanced recovery—5003,808–3,828Feb 14, 1977
Frio D-5 Unit #49Conoco Inc.CanceledEnhanced recovery—5003,840–3,850Feb 14, 1977
Frio D-5 Unit #50Conoco Inc.CanceledEnhanced recovery—5003,846–3,858Feb 14, 1977
Frio D-5 Unit #52Conoco Inc.CanceledEnhanced recovery—5003,837–3,852Feb 14, 1977
Slick, T.B., Estate -A- #1Tenneco Oil Co.CanceledDisposal—5002,320–2,400Mar 12, 1986
Alvarez, Cornelio #13Alvarez & AlvarezCanceledEnhanced recovery—500670–674Dec 16, 1968
Alvarez, Cornelio #18Dugger, GlennCanceledDisposal—500714–720Jan 22, 1970
Alvarez, Cornelio #10Alvarez & AlvarezCanceledEnhanced recovery—500649–653Dec 16, 1968
Alvarez, Cornelio #12Alvarez & AlvarezCanceledEnhanced recovery—500662–665Dec 16, 1968
Guerra, H.P. Gas Unit #1 #1McRae, Nathan D.CanceledDisposal—5002,200–2,210Nov 14, 1978
Guerra, H.P. Gas Unit #1 #1McRae, Nathan D.CanceledDisposal—5002,200–2,210Nov 14, 1978
Villarreal #5Wagner Oil CompanyCanceledEnhanced recovery—5006,050–6,064Jun 28, 1988
Alvarez, Cornelio #16Alvarez & AlvarezCanceledDisposal—500714–717Jan 22, 1970
Wood, D. G., Sr., -C- #6Poor Boy Oilfield ServiceCanceledDisposal—5001,420–1,430Feb 16, 1990
Urschel, C.F. #5Merit Energy CompanyPluggedDisposal—5003,780–3,910Mar 31, 1993
Sun Field Waterflood Unit No. 1 #1WReh Energy, Inc.CanceledEnhanced recovery—5004,856–4,868Aug 17, 1994
De Garza, J. M. #7Reserve Operating Corp.PluggedDisposal—5004,637–4,706Apr 9, 1997
Camilo-Garza Etal #1Dugger, GlennPluggedEnhanced recovery—500762Nov 10, 1969
Camilo-Garza Etal #2Dugger, GlennPluggedEnhanced recovery—500760Nov 10, 1969
Camilo-Garza Etal #3Dugger, GlennPluggedEnhanced recovery—500760Nov 10, 1969
Camilo-Garza Etal #8Dugger, GlennPluggedEnhanced recovery—500744–750Dec 6, 1968
B. G. de Garcia #21Sunoco Operations, Inc.CanceledEnhanced recovery—5004,280–4,287Oct 5, 1964
McKim-Alvarez #1Hope, Alvin C. Estate OfPluggedEnhanced recovery—5004,147–4,152Mar 29, 1971
Garcia, M. M. -B- #10Continental Oil CompanyCanceledEnhanced recovery—5003,679–3,684Mar 26, 1970
Frio D-5 Unit #51Continental Oil CompanyCanceledEnhanced recovery—5003,840–3,878Feb 14, 1977
Orive, A. -A- #2Starco Exploration, Inc.CanceledDisposal—4004,145–4,147Nov 7, 1968
Cardenas #2KTX Management Co.CanceledDisposal—4002,650–3,103May 12, 1977
Villarreal #1Osborn, W. B. OperatorCanceledEnhanced recovery—4005,080–5,118Jun 18, 1980
East, Alice K., Mrs. #6Exxon Corp.CanceledDisposal—3503,088–3,150Jun 26, 1984
Heard, J. F. B. #8Rincon Gas, Inc.CanceledDisposal—3004,350–4,364Jul 2, 1993
Sun Field Waterflood Unit No. 1 #16Reh Energy, Inc.PluggedEnhanced recovery—3004,856–4,868Dec 28, 2000
Cameron #2Osborn,w.b. Oil & Gas OperationsCanceledDisposal—3002,240–2,270Jul 11, 1984
Marrs-McLean #13 UContinental Operating Co.PluggedDisposal—3002,760–2,820Jun 4, 1992
Slick, T. B. -B- Est. #90Conoco Inc.CanceledEnhanced recovery—3003,660–3,670Oct 13, 1969
Cameron 137 #1SE USA Operating, Inc.CanceledDisposal—3004,440–4,444Mar 8, 2005
Slick, T. B. -B- Est. #102Conoco Inc.CanceledEnhanced recovery—2753,704–3,860Feb 15, 1984
Frio D-5 Unit #8Continental Oil CompanyPluggedEnhanced recovery—2733,747–3,777Jul 28, 1981
Slick, T. B. Estate #1DTrue Oil CompanyCanceledDisposal—2501,630–1,670Apr 22, 1991
Cook, Vannie, Trusts #43RNS Oil Co.PluggedEnhanced recovery—250440–455Nov 29, 1984

Latest disposal drilling permits

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

IssuedPermitOperatorLease / well
May 5, 2008660120J & R ContractorsArgentina SWD #1D 42701556
Jun 20, 2003533353El Paso Production Oil & Gas Co.Zamora SWD #1 42733626
Jan 25, 1996444111Nopal Gathering CorporationIzaguirre SWD #1 42732827
May 18, 1993411413Coastal Oil & Gas CorporationGuerra "a" SWD #1 42732571
Jan 29, 198071087Sun Expl. & Prod. Co.-CorpusMontalvo, I. V. "C" #12D 42700580
Jan 17, 198070013Sun Expl. & Prod. Co.-CorpusSaenz, M. St. #20 D 42704529
Jan 17, 198070006Sun Expl. & Prod. Co.-CorpusSaenz, M. St. #14 D 42701111
Aug 30, 197956744Shell Oil CompanyBentsen Bros. "B" #1D 42701336
Oct 26, 197710650Shell Oil CompanyGarza, A. M. - State #11 42701301

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/starr, documented in the API reference.