Oil and gas leases in Starr County — page 16

Starr County, Texas has 3,285 oil and gas leases with production on file at the Railroad Commission, all of them in Commission district 04. 434 of them are oil leases and 2,851 are gas leases. Between them they carry 3,688 wellbores. Reported volumes run from January 1993 to August 2026 and come to 16.6 million barrels of oil and 3.1 billion Mcf of gas. 245 operators file returns here. Every lease below has its own page with a decline-curve forecast and an estimate of what the whole lease is worth.

Key facts about Starr County

How many oil and gas leases are in Starr County?: Starr County has 3,285 oil and gas leases with production reported to the Railroad Commission of Texas, as of August 2026.
How much oil and gas has Starr County produced?: Leases in Starr County have reported 16,596,226 barrels of oil (bbl) and 3,108,595,775 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between January 1993 and August 2026.
How many operators are active in Starr County?: 245 operators file production returns for leases in Starr County.
How much are mineral rights in Starr County worth?: There is no single figure: what a mineral or royalty interest in Starr County is worth depends on the individual lease, its decline, and the share the owner holds. Each of the 3,285 leases listed here has its own page with the full production history the operator reported, a decline-curve forecast, and an estimate of what a royalty interest in it is worth today.

Leases — page 16 of 17

GREEN & MANNING GAS UNIT #2 — gas, J. & M. Well Service, Inc., Starr County, 4 thousand reported
SLICK, T. B. STATE "H" 536 — oil, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 4 thousand reported
GUERRA, R. R. PARTNERSHIP, ET AL — gas, Epstein, Edwin A JR Oper Co Inc, Starr County, 4 thousand reported
T. B. SLICK EST. A-527 — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 4 thousand reported
GARCIA L&L -C- — gas, Oryx Energy Company, Starr County, 4 thousand reported
LA BRISA RANCH 907 — oil, Glenn, Wayne E. & Assoc., Inc., Starr County, 4 thousand reported
ZARSKY — oil, L & B Oil And Gas Equipment, LLC, Starr County, 4 thousand reported
MONTALVO, I. V. -C- — gas, Oryx Energy Company, Starr County, 3 thousand reported
LOPEZ, JUAN GARCIA — oil, M & S Production Company, Starr County, 3 thousand reported
SLICK, T. B. -B- EST. — oil, Conoco Inc., Starr County, 3 thousand reported
GREEN & MANNING GAS UNIT #2 — gas, J. & M. Well Service, Inc., Starr County, 3 thousand reported
BASS, VELMA — oil, Wagner, Duer & Co., Starr County, 3 thousand reported
FIRST NATIONAL BANK OF MISSION — oil, Oxy USA Inc., Starr County, 3 thousand reported
GUERRA GU "B" — gas, Coastal Oil & Gas Corporation, Starr County, 3 thousand reported
NATIONSBANK — gas, Transtexas Gas Corporation, Starr County, 3 thousand reported
BURTON, JOHN F. ET AL UNIT — oil, Kelley Oil Corporation, Starr County, 3 thousand reported
STATE OF TEXAS - SLICK #4 — oil, Star Of Texas Energy SRVS, Inc., Starr County, 3 thousand reported
GUERRA-GARCIA GAS UNIT — gas, Pogo Producing Company LLC, Starr County, 3 thousand reported
DEFLORES, M. S. — gas, Tasca Exploration Company, Starr County, 3 thousand reported
DEGARZA, J. M. — oil, Trans-Pecos Resources, Inc., Starr County, 3 thousand reported
VILLARREAL — gas, Energy Development Corp., Starr County, 3 thousand reported
GUERRA SHARE 20 OIL UNIT — oil, Texaco E & P Inc., Starr County, 3 thousand reported
BURTON, JOHN F. ET AL — oil, Kelley Oil Corporation, Starr County, 3 thousand reported
MCGILL BROS — oil, Exxon Corp., Starr County, 3 thousand reported
SUE FULLER — oil, Rlu Operating, LLC, Starr County, 3 thousand reported
HMC/TIE LA BRISA — gas, Hanson Production Company, Starr County, 3 thousand reported
DEGARCIA-CHAMPION UNIT — oil, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 3 thousand reported
GUERRA, A., JR. ET AL -A- — gas, Wynn-Crosby Energy, Inc., Starr County, 3 thousand reported
DE LOPEZ, C.V. -A- — gas, Omimex Petroleum, Inc., Starr County, 3 thousand reported
FINA CONOCO FEE — oil, Fina Oil & Chemical Company, Starr County, 3 thousand reported
EAST, ALICE K. MRS. "B" — gas, Exxon Corp., Starr County, 3 thousand reported
GUERRA — oil, Howard Exploration, Inc., Starr County, 3 thousand reported
HINOJOSA, MEDARDO -B- ROY. A/C#2 — oil, J. & M. Well Service, Inc., Starr County, 3 thousand reported
PARKS, W. S., ET AL — gas, J. & M. Well Service, Inc., Starr County, 3 thousand reported
WARDNER, G. P., TRUSTEE -E- — oil, Falcon Production Co., Starr County, 3 thousand reported
SPEER, GEORGE H. — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 3 thousand reported
HINOJOSA, M. -A- — oil, J. & M. Well Service, Inc., Starr County, 3 thousand reported
CHAPOTAL LAND CO. -B- — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 3 thousand reported
CAMERON, DON D. — gas, Conoco Inc., Starr County, 3 thousand reported
YZAGUIRRE — gas, Texas Independent Explor., Inc., Starr County, 3 thousand reported
FLORES UNIT — oil, Opex Energy, LLC, Starr County, 3 thousand reported
SAENZ, VICENTE — gas, Texas Fuel Company, Starr County, 3 thousand reported
MCGILL BROS. — oil, Exxon Corp., Starr County, 3 thousand reported
BREAKER — gas, Mortimer Exploration Company, Starr County, 3 thousand reported
HEARD, J. F. B. — oil, Integrated Operating Corporation, Starr County, 3 thousand reported
TEXACO FEE GU — oil, Metano Energy, LP, Starr County, 3 thousand reported
VILLARREAL — gas, Energy Development Corp., Starr County, 3 thousand reported
SPEER, GEO. H. STATE -D- — oil, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 3 thousand reported
MONTALVO, N. R. — oil, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 2 thousand reported
CNG ET AL UNIT — oil, BNP Petroleum Corporation, Starr County, 2 thousand reported
YTURRIA, L & L CO.-B- — oil, Oryx Energy Company, Starr County, 2 thousand reported
CHAPOTAL LAND CO. A — gas, Smith Production Inc., Starr County, 2 thousand reported
URSCHEL, C. F. — gas, Fina Oil & Chemical Company, Starr County, 2 thousand reported
MCGILL BROS. — gas, Exxon Corp., Starr County, 2 thousand reported
GREEN & MANNING GAS UNIT #2 — gas, J. & M. Well Service, Inc., Starr County, 2 thousand reported
MONTALVO, I. V. -C- — gas, Oryx Energy Company, Starr County, 2 thousand reported
SLICK, T. B. ESTATE "A" — gas, Forest Oil Corporation, Starr County, 2 thousand reported
MONTALVO, N. R. — oil, Triad O&G, LLC, Starr County, 2 thousand reported
MARGO — gas, Newgulf Petroleum, LLC, Starr County, 2 thousand reported
MCGILL BROS. — gas, Overton Park Oil & Gas LP, Starr County, 2 thousand reported
MAYFAIR-GUERRA — oil, Discovery Energy Corp. CC, Starr County, 2 thousand reported
LA BRISA RANCH 907 — gas, Trap Rock Oil, Ltd., Starr County, 2 thousand reported
I.V. MONTALVO 'C' — oil, Killam Oil Co., Ltd., Starr County, 2 thousand reported
MARTINEZ C — oil, Noble Energy Inc, Starr County, 2 thousand reported
WARDNER, G.P. "E" — oil, Falcon Production Co., Starr County, 2 thousand reported
MONTALVO, N. R. — oil, Triad O&G, LLC, Starr County, 2 thousand reported
GARZA HEIRS — oil, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 2 thousand reported
HEARD — gas, Noble Energy Inc, Starr County, 2 thousand reported
I.V. MONTALVO 'A' — oil, Killam Oil Co., Ltd., Starr County, 2 thousand reported
COATES 553 — gas, Samson Lone Star LP, Starr County, 2 thousand reported
LA BRISA RANCH BELMONT — gas, Trap Rock Oil, Ltd., Starr County, 2 thousand reported
LMB-STATE — gas, Cimarron Engineering Corp., Starr County, 2 thousand reported
SLICK — oil, Samson Lone Star LP, Starr County, 2 thousand reported
GUERRA MINERAL TRUST (NCT-II) — oil, Hughes, Dan A. Company, Starr County, 2 thousand reported
A. GUERRA "A" — gas, Wynn-Crosby Energy, Inc., Starr County, 2 thousand reported
LAUREL, C. — oil, Oryx Energy Company, Starr County, 2 thousand reported
LA BRISA RANCH / STATE 542 — gas, Trap Rock Oil, Ltd., Starr County, 2 thousand reported
SALAZAR UNIT — oil, Strata Operating, Inc., Starr County, 2 thousand reported
YTURRIA L & L — gas, Starr County, 2 thousand reported
FLORES-HENSLEY — oil, Oryx Energy Company, Starr County, 2 thousand reported
FLORES UNIT — gas, Trap Rock Oil, Ltd., Starr County, 2 thousand reported
MONTALVO, N.R. — oil, Reh Energy, Inc., Starr County, 2 thousand reported
GUERRA BROS. — oil, Peoples Energy Prod.-TX, L.P., Starr County, 2 thousand reported
SLICK, T.B. ESTATE H — gas, Forest Oil Corporation, Starr County, 2 thousand reported
FROST NATIONAL BANK -B- — gas, Smith Production Inc., Starr County, 2 thousand reported
OLIVAREZ, MIGUEL — gas, Energy Development Corp., Starr County, 2 thousand reported
HEARD, J.F.B. — oil, Alpha Omega Petroleum, Inc., Starr County, 2 thousand reported
STATE SLICK -D- — gas, Fina Oil & Chemical Company, Starr County, 2 thousand reported
GUERRA, A. "A" — oil, Wynn-Crosby Energy, Inc., Starr County, 2 thousand reported
MONTALVO, N. R. — gas, Exxon Corp., Starr County, 2 thousand reported
WALKER, W. E. — oil, Cameron, Paul E., JR., Inc., Starr County, 2 thousand reported
HALL, C. M. — gas, Killam Oil Co., Ltd., Starr County, 2 thousand reported
GUERRA, F. B. — oil, Corpus Christi Leaseholds, Inc., Starr County, 2 thousand reported
SLICK, T. B. ESTATE "B" 536 — gas, Houston Exploration Company, The, Starr County, 2 thousand reported
MCGILL BROS. — oil, Exxon Corp., Starr County, 2 thousand reported
MAYFAIR LA BRISA — oil, Samson Lone Star LP, Starr County, 2 thousand reported
SLICK, T. B. ESTATE C 221 — oil, Forest Oil Corporation, Starr County, 2 thousand reported
GUERRA, A.M. — oil, Pace Oil And Gas Company, Starr County, 2 thousand reported
TENNECO CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 2 thousand reported
LA BRISA RANCH 907 — oil, Trap Rock Oil Company, Starr County, 2 thousand reported
I.V. MONTALVO 'C' — oil, Killam Oil Co., Ltd., Starr County, 2 thousand reported
GUERRA SHARE 8-D — oil, Texaco E & P Inc., Starr County, 2 thousand reported
MARTINEZ, C. — oil, Samedan Oil Corporation, Starr County, 2 thousand reported
GARCIA L&L CO — oil, Smith Production Inc., Starr County, 2 thousand reported
COATES ENERGY TRUST, ETAL — oil, Denovo Oil & Gas, Inc., Starr County, 2 thousand reported
LA BRISA RANCH/STATE 542 — gas, Trap Rock Oil Company, Starr County, 2 thousand reported
GUERRA, F.B. ESTATE "B" — gas, PG&E Resources Company, Starr County, 2 thousand reported
STATE-SLICK "D" — gas, Fina Oil & Chemical Company, Starr County, 1 thousand reported
GARCIA, M. M., LAND TRUST — gas, Carl Oil & Gas Co., Starr County, 1 thousand reported
SLICK, T.B. ESTATE — oil, Fina Oil & Chemical Company, Starr County, 1 thousand reported
WOOD "A" — gas, Kaiser-Francis Oil Company, Starr County, 1 thousand reported
CAMERON GAS UNIT — oil, Dewbre Petroleum Corporation, Starr County, 1 thousand reported
AUSTIN, CARLOS A. — oil, L & B Operating Co., Inc., Starr County, 1 thousand reported
FROST NATIONAL BANK -B- — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 1 thousand reported
BLOCK, E. HEIRS "B" — oil, Osborn,W.B. Oil & Gas Operations, Starr County, 1 thousand reported
WARDNER — oil, Ress Production Co., Starr County, 1 thousand reported
ESTRELLA GAS UNIT — gas, Dynamic Production, Inc., Starr County, 1 thousand reported
RICABY, S. B. -A- — oil, J. & M. Well Service, Inc., Starr County, 1 thousand reported
SEMMES TRUST ET AL "906" — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 1 thousand reported
ELOY #3 — oil, Tepee Petroleum Co., Inc., Starr County, 1 thousand reported
MCGILL, J.C. JR. STATE — oil, Exxon Corp., Starr County, 1 thousand reported
FUENTES J.R. 1 — oil, Valley Petrochemicals, LLC, Starr County, 1 thousand reported
FLORES UNIT — oil, Merit Energy Company, Starr County, 1 thousand reported
PARKS, W. S., ETAL — oil, J. & M. Well Service, Inc., Starr County, 1 thousand reported
GREEN & MANNING GU 2 — gas, J. & M. Well Service, Inc., Starr County, 1 thousand reported
WARDNER, G. P. TRUSTEE -A- — oil, Falcon Production Co., Starr County, 1 thousand reported
WARDNER, G. P., TSE. -F- — oil, Falcon Production Co., Starr County, 1 thousand reported
LA BRISA R — oil, Trap Rock Oil, Ltd., Starr County, 1 thousand reported
DAVENPORT, O. H. HEIRS — gas, Shell Western E&P, Starr County, 1 thousand reported
MURCH, B. L. — gas, Headington Oil Company, L.P., Starr County, 1 thousand reported
RICHMOND — gas, El Paso Production Oil & Gas Co., Starr County, 1 thousand reported
GONZALES, L. SHARE 20 — oil, Linder Oil Company,A Partnership, Starr County, 1 thousand reported
CAMERON, W. I. 138 — oil, Houston Exploration Company, The, Starr County, 1 thousand reported
FUENTES, J. R. — gas, J. & M. Well Service, Inc., Starr County, 1 thousand reported
GREINER ESTATE — oil, Mueller Engineering Corp., Starr County, 1 thousand reported
GONZALEZ, ET AL — oil, Poor Boy Oilfield Service, Starr County, 1 thousand reported
A. SOLIS GAS UNIT — gas, Neuhaus, V. F. Properties, Inc., Starr County, 1 thousand reported
VILLAREAL — oil, Newman Operating Company, Starr County, 1 thousand reported
COATES 553 — gas, Texas Independent Explor., Inc., Starr County, 1 thousand reported
GARZA — oil, Killam Oil Co., Ltd., Starr County, 1 thousand reported
BLACK STONE MINERALS — oil, Luca Resources Group, LLC, Starr County, 1 thousand reported
KELSEY — gas, M & S Production Company, Starr County, 1 thousand reported
CLOPTON, JOHN H. — gas, Modern Exploration, Inc., Starr County, 977 reported
SOLIS HEIRS — oil, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 960 reported
SLICK — oil, Texas Independent Explor., Inc., Starr County, 943 reported
M. SAENZ STATE — oil, Killam Oil Co., Ltd., Starr County, 930 reported
OWEN & MOSS FEE — gas, J. & M. Well Service, Inc., Starr County, 908 reported
MARTINEZ B — oil, Samedan Oil Corporation, Starr County, 908 reported
WARDNER, G. P., TRUSTEE — oil, Falcon Production Co., Starr County, 901 reported
CHAPOTAL LAND CO. -A- — gas, Oryx Energy Company, Starr County, 896 reported
MONTALVO, N. R. — oil, Triad O&G, LLC, Starr County, 877 reported
NATIONS BANK — oil, Transtexas Gas Corporation, Starr County, 849 reported
WARDNER, G. P. -F- — oil, Falcon Production Co., Starr County, 825 reported
MONTALVO HEIRS 'B' — oil, Killam Oil Co., Ltd., Starr County, 817 reported
STATE OF TEXAS-SLICK # 3 — gas, Star Of Texas Energy SRVS, Inc., Starr County, 810 reported
CHAMPION, A.A. — oil, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 806 reported
HIDALGO-WILLACY — gas, L & F Drilling Co., Inc. (1), Starr County, 798 reported
BENTSEN -A- — gas, Phillips Petroleum Company, Starr County, 794 reported
GUERRA MINERAL TRUST (NCT-III) — gas, Hughes, Dan A. Company, Starr County, 779 reported
GUERRA, F.B. ESTATE "B" — gas, Wynn-Crosby Energy, Inc., Starr County, 778 reported
STATE/LMB PARTNERSHIP 220 — gas, Trap Rock Oil, Ltd., Starr County, 764 reported
SLICK, T. B. ESTATE "B" 222 — gas, Houston Exploration Company, The, Starr County, 758 reported
GEO. H. SPEER — oil, Killam Oil Co., Ltd., Starr County, 747 reported
BOSTON TEXAS LAND TRUST #8 — oil, Legacy Corporation, The, Starr County, 736 reported
STATE CHOWDARY - WATTS UNIT — oil, Lpes, Inc., Starr County, 732 reported
WARDNER, G. P., TRUSTEE — oil, Falcon Production Co., Starr County, 728 reported
SAENZ, G.F. — gas, Toma Oil & Gas, Inc., Starr County, 721 reported
MARGO — oil, Newgulf Petroleum, LLC, Starr County, 718 reported
HALL, J.F. STATE — oil, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 700 reported
BAIRD, LILLIE MAE — gas, J. & M. Well Service, Inc., Starr County, 699 reported
WARDNER, G. P., TRUSTEE — oil, Falcon Production Co., Starr County, 677 reported
HINOJOSA, MEDARDO -B- ROY. A/C#1 — oil, J. & M. Well Service, Inc., Starr County, 655 reported
HNOJOSA — gas, J. & M. Well Service, Inc., Starr County, 651 reported
GUERRA SHARE 305-C — gas, Texaco E & P Inc., Starr County, 648 reported
WATTS — oil, Lpes, Inc., Starr County, 647 reported
FEE — oil, Osborn Heirs Company, Starr County, 638 reported
DE GARCIA, B. G. — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 608 reported
DAVENPORT, D. STATE — gas, Texas Independent Explor., Inc., Starr County, 607 reported
BOSTON TEXAS LAND TRUST # 8 — oil, Legacy Corporation, The, Starr County, 607 reported
WARDNER, G. P. -A- — oil, Falcon Production Co., Starr County, 586 reported
EDGERTON — gas, Lighthouse Exploration, Inc., Starr County, 576 reported
PARKS, W. S. ET AL — gas, J. & M. Well Service, Inc., Starr County, 566 reported
SPEER, GEO. H. — oil, Exaro Energy II, LLC, Starr County, 534 reported
MARTINEZ C — oil, Samedan Oil Corporation, Starr County, 529 reported
YTURRIA-GARCIA — gas, Neuhaus, V. F. Properties, Inc., Starr County, 517 reported
ALVAREZ, CORNELIO — oil, Alvarez & Alvarez, Starr County, 516 reported
REILLY HEIRS — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 499 reported
MCGILL BROTHERS — oil, Exxon Corp., Starr County, 492 reported
HINOJOSA, M., -B- ROY. ACCT. #1 — gas, J. & M. Well Service, Inc., Starr County, 489 reported
SAENZ, M. -STATE — gas, Oryx Energy Company, Starr County, 470 reported
MARTINEZ — oil, Rincon Gas, Inc., Starr County, 453 reported
BENTSEN TR. I — oil, TNT Petroleum Company, Inc., Starr County, 452 reported
MONTALVO 'B' UNIT — gas, Killam Oil Co., Ltd., Starr County, 439 reported
HMC/TIE LA BRISA — oil, Hanson Production Company, Starr County, 433 reported
GUERRA, F.B. EST -B- — gas, PG&E Resources Company, Starr County, 422 reported
LMB CORP. STATE A — oil, Ceniza Petroleum, Inc., Starr County, 422 reported
GREINER — gas, Mueller Engineering Corp., Starr County, 420 reported
HERMANN, A.G. GAS UNIT — oil, Smith Production Inc., Starr County, 417 reported
GARCIA, DR. JOSE "B" — oil, Wagner Oil Company, Starr County, 392 reported
HINOJOSA, M., -B-ROY. ACCT. #2 — gas, J. & M. Well Service, Inc., Starr County, 386 reported

Production figures are as reported to the Railroad Commission of Texas. Values shown on lease pages are estimates produced by fitting a decline curve to that reported history; they are not offers or appraisals.