Oil and gas leases in Starr County — page 9

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 9 of 17

SLICK, T. B. ESTATE -H- — oil, Conoco Inc., Starr County, 271 thousand reported
BTLT — gas, Sheridan Production Company, LLC, Starr County, 271 thousand reported
SLICK, T.B. ESTATE B1 — gas, Conoco Inc., Starr County, 270 thousand reported
MCGILL BROS. — gas, Exxon Corp., Starr County, 269 thousand reported
REILLY HEIRS — gas, Hughes, Dan A. Company, L.P., Starr County, 268 thousand reported
WALKER, BILLY L. — gas, Mortimer Exploration Company, Starr County, 268 thousand reported
I.V. MONTALVO 'C' — gas, Killam Oil Co., Ltd., Starr County, 268 thousand reported
LAUREL, D. — gas, Oryx Energy Company, Starr County, 268 thousand reported
BENTSEN TRACT I — gas, Samson Lone Star LP, Starr County, 268 thousand reported
VILLARREAL — gas, Energy Development Corp., Starr County, 267 thousand reported
SLICK 539 — gas, Texas Independent Explor., Inc., Starr County, 266 thousand reported
MCCLURE NORTH — gas, Bluestone Natural Res. II, LLC, Starr County, 266 thousand reported
SAENZ, VICENTE STATE -C- — gas, Exxon Corp., Starr County, 265 thousand reported
SLICK, T. B. ESTATE "E" 537 — gas, Forest Oil Corporation, Starr County, 265 thousand reported
MARGO — gas, Newgulf Petroleum, LLC, Starr County, 265 thousand reported
MARTINEZ, FELIX — gas, Neuhaus, V. F. Properties, Inc., Starr County, 264 thousand reported
T.B. SLICK ESTATE — gas, Fina Oil & Chemical Company, Starr County, 263 thousand reported
YTURRIA L&L CO. -B- — gas, Oryx Energy Company, Starr County, 263 thousand reported
SLICK, T. B. ESTATE — gas, Shell Western E&P, Starr County, 263 thousand reported
NILO GAS UNIT — gas, Eog Resources, Inc., Starr County, 263 thousand reported
GARCIA L&L CO. — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 263 thousand reported
EDMUNDS, A. K. — gas, Starco Exploration, Inc., Starr County, 262 thousand reported
EIA PROPERTIES — gas, Bluestone Natural Res. II, LLC, Starr County, 262 thousand reported
RODRIGUEZ — gas, Opex Energy, LLC, Starr County, 262 thousand reported
EAST BLOCK HEIRS "B" — gas, Olsen Energy Inc., Starr County, 261 thousand reported
GUERRA SHARE 331-C — gas, Texaco E & P Inc., Starr County, 261 thousand reported
MARTINEZ -B- — gas, Samedan Oil Corporation, Starr County, 260 thousand reported
FLORES UNIT — gas, Merit Energy Company, Starr County, 260 thousand reported
FINA CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 259 thousand reported
DE GARCIA, B. G. — gas, Oryx Energy Company, Starr County, 259 thousand reported
MCGILL BROS. — gas, Coronado Energy E&P Company, LLC, Starr County, 259 thousand reported
STARRPRO MINERALS STATE B — gas, Legend Natural Gas III, LP, Starr County, 259 thousand reported
SLICK, T. B. EST. -C- — gas, Conoco Inc., Starr County, 258 thousand reported
VILLARREAL — gas, Energy Development Corp., Starr County, 258 thousand reported
GUERRA "D" — gas, Newfield Exploration Company, Starr County, 256 thousand reported
CAMERON — gas, Cameron, Paul E., JR., Inc., Starr County, 256 thousand reported
SLICK, T. B. ESTATE "B-222" — gas, Forest Oil Corporation, Starr County, 255 thousand reported
VILLARREAL — gas, Wagner Oil Company, Starr County, 255 thousand reported
SLICK, T.B. EST. A-265 — oil, Hilcorp Energy Company, Starr County, 254 thousand reported
SAMANO, M. "C" — gas, Coastal Oil & Gas Corporation, Starr County, 253 thousand reported
GARZA, C. L. DE — gas, Oryx Energy Company, Starr County, 251 thousand reported
HALL, C. M. — gas, Oryx Energy Company, Starr County, 251 thousand reported
MONTALVO, N. R. — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 250 thousand reported
ORIVE, A. — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 249 thousand reported
SLICK, T.B. EST -A- — gas, Conoco Inc., Starr County, 249 thousand reported
MCGILL BROS. — gas, Exxon Corp., Starr County, 248 thousand reported
BENTSEN BROS. "B" — gas, Oxy USA Inc., Starr County, 248 thousand reported
MARTINEZ B — gas, Samedan Oil Corporation, Starr County, 248 thousand reported
SOUTHWEST TEXAS CORP. — gas, Eog Resources, Inc., Starr County, 247 thousand reported
RICABY TRUST — gas, Opex Energy, LLC, Starr County, 247 thousand reported
C.M. HALL 'A' — gas, Killam Oil Co., Ltd., Starr County, 246 thousand reported
SHEERIN GAS UNIT — gas, Legend Natural Gas III, LP, Starr County, 246 thousand reported
MARGO R.E. ESTATE — gas, Newgulf Petroleum, LLC, Starr County, 246 thousand reported
FARIAS UNIT — gas, Neuhaus, V. F. Properties, Inc., Starr County, 245 thousand reported
GUTIERREZ NO. 1 — oil, Bommer Engineering Co., Starr County, 244 thousand reported
CHAPOTAL LAND CO. -B- — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 244 thousand reported
GARZA-RIVAS UNIT — gas, D.Y. Exploration, Inc., Starr County, 243 thousand reported
SLICK, T. B. ESTATE A — gas, Conoco Inc., Starr County, 242 thousand reported
DE FLORES, M. S. — gas, Tasca Exploration Company, Starr County, 242 thousand reported
MARGO — gas, Newgulf Petroleum, LLC, Starr County, 241 thousand reported
CAMERON, DON ET AL -A- — gas, Neuhaus, V. F. Properties, Inc., Starr County, 241 thousand reported
BLOOMBERG, SAMUEL D. — gas, Edge Petroleum Oper. Co., Inc., Starr County, 241 thousand reported
SAMANO — gas, El Paso Production Oil & Gas Co., Starr County, 241 thousand reported
SLICK, T. B. ESTATE — gas, Fina Oil & Chemical Company, Starr County, 241 thousand reported
GARCIA L&L CO. — gas, Smith Production Inc., Starr County, 240 thousand reported
SPEER, GEO. H. ST. 'B' — gas, Killam Oil Co., Ltd., Starr County, 240 thousand reported
THOMAS RIFE ET AL GAS UNIT — gas, Shell Western E&P Inc., Starr County, 239 thousand reported
SLICK, T.B. ESTATE — gas, Fina Oil & Chemical Company, Starr County, 239 thousand reported
MONTALVO, I.V. -C- — gas, Oryx Energy Company, Starr County, 239 thousand reported
GONZALES, OSBELIA SAENZ ET AL — gas, Prolithic Energy Company, L.P., Starr County, 239 thousand reported
SLICK, T.B. ESTATE B1 — gas, Conoco Inc., Starr County, 239 thousand reported
BTLT — gas, Smith Production Inc., Starr County, 239 thousand reported
FINA-CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 238 thousand reported
I.V. MONTALVO 'C' — gas, Killam Oil Co., Ltd., Starr County, 238 thousand reported
MARTINEZ STATE — gas, Shell Western E&P Inc., Starr County, 237 thousand reported
BTLT — gas, Sheridan Production Company, LLC, Starr County, 237 thousand reported
DAVENPORT, O. H. HEIRS — gas, Shell Western E&P, Starr County, 236 thousand reported
BENTSEN TRACT II — gas, TNT Petroleum Company, Inc., Starr County, 236 thousand reported
GARCIA HEIRS GAS UNIT — gas, Transtexas Gas Corporation, Starr County, 235 thousand reported
SLICK ESTATE -C- — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 234 thousand reported
SLICK, T. B. ESTATE "B" 536 — gas, Forest Oil Corporation, Starr County, 234 thousand reported
YTURRIA, L & L CO. -B- — gas, Oryx Energy Company, Starr County, 234 thousand reported
HALL, C. M. -A- — gas, Killam Oil Co., Ltd., Starr County, 233 thousand reported
MARGO/PENA — gas, Mortimer Production Company, Starr County, 233 thousand reported
CARDENAS, R. R. — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 232 thousand reported
GROOS NATIONAL BANK — gas, Wagner, Duer & Co., Starr County, 232 thousand reported
HEARD, J. F. B. — gas, Alpha Omega Petroleum, Inc., Starr County, 232 thousand reported
BLOOMBERG, SAMUEL D — gas, Smith Production Inc., Starr County, 232 thousand reported
I.V. MONTALVO 'C' — gas, Killam Oil Co., Ltd., Starr County, 231 thousand reported
LA BRISA RANCH 542 — gas, Glenn, Wayne E. & Assoc., Inc., Starr County, 231 thousand reported
LA BRISA RANCH PARTNERS 91 — oil, J. & M. Well Service, Inc., Starr County, 230 thousand reported
SLICK, T. B. ESTATE — gas, Totalfinaelf E&P USA Inc, Starr County, 230 thousand reported
SLICK, T.B. ESTATE — gas, Fina Oil & Chemical Company, Starr County, 229 thousand reported
GUERRA GAS UNIT "A" — gas, Coastal Oil & Gas Corporation, Starr County, 229 thousand reported
OLIVAREZ-VAN DRESAR UNIT — gas, M. J. G., Inc., Starr County, 229 thousand reported
RAMEY — gas, Eog Resources, Inc., Starr County, 229 thousand reported
FARIAS UNIT — gas, Neuhaus, V. F. Properties, Inc., Starr County, 229 thousand reported
DE GARCIA, B. G. — gas, Oryx Energy Company, Starr County, 228 thousand reported
MCGILL BROS. — gas, Exxon Mobil Corporation, Starr County, 228 thousand reported
GUERRA, ET AL. — gas, Epstein, Edwin A JR Oper Co Inc, Starr County, 228 thousand reported
FINA-CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 228 thousand reported
GARCIA, I. Y. — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 228 thousand reported
ALVARADO, FRANCISCO ET. UX — gas, Texas Independent Explor., Inc., Starr County, 227 thousand reported
ESCOBAR UNIT — gas, Linder Oil Company,A Partnership, Starr County, 227 thousand reported
CAMERON 487 — gas, Texas Independent Explor., Inc., Starr County, 226 thousand reported
SLICK, T. B. ESTATE "A" — gas, Houston Exploration Company, The, Starr County, 226 thousand reported
SLICK, T. B. ESTATE — gas, Oxy USA Inc., Starr County, 226 thousand reported
VILLAREAL — gas, Peoples Energy Prod.-TX, L.P., Starr County, 225 thousand reported
HALL, J. F. STATE -A — gas, Oryx Energy Company, Starr County, 225 thousand reported
BENTSEN TRACT I — gas, Merit Energy Company, Starr County, 224 thousand reported
STATE OF TEXAS SLICK #1 — gas, Star Of Texas Energy SRVS, Inc., Starr County, 224 thousand reported
REILLY HEIRS — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 224 thousand reported
FINA-CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 224 thousand reported
BOSTON TEXAS LAND TRUST — gas, Hanson Production Company, Starr County, 223 thousand reported
MCGILL BROS. — gas, Peoples Energy Prod.-TX, L.P., Starr County, 223 thousand reported
SAENZ, M - STATE — oil, Oryx Energy Company, Starr County, 223 thousand reported
JONES FAMILY — gas, Eog Resources, Inc., Starr County, 223 thousand reported
SLICK ESTATE — gas, Mueller Engineering Corp., Starr County, 223 thousand reported
SLICK, T. B. ESTATE "A" — gas, Conoco Inc., Starr County, 223 thousand reported
SEMMES TRUST , ET AL 906 — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 222 thousand reported
MARTINEZ B — gas, Samedan Oil Corporation, Starr County, 222 thousand reported
3 M SOUTH — gas, Newgulf Petroleum, LLC, Starr County, 222 thousand reported
FINA CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 222 thousand reported
CAMERON — gas, Osborn,W.B. Oil & Gas Operations, Starr County, 222 thousand reported
GARZA HEIRS UNIT 2 — gas, Rlu Operating, LLC, Starr County, 222 thousand reported
H. ACEVEDO GAS UNIT — gas, Suemaur Exploration, Inc., Starr County, 221 thousand reported
DIAZ — gas, Touchstone Resources USA, Inc., Starr County, 221 thousand reported
GARZA, ROMEO — gas, Eog Resources, Inc., Starr County, 221 thousand reported
BLOOMBERG, SAMUEL D. — gas, Edge Petroleum Oper. Co., Inc., Starr County, 219 thousand reported
SEMMES TRUST, ET AL "906" — gas, Conoco Inc., Starr County, 218 thousand reported
STATE-SLICK — gas, Fina Oil & Chemical Company, Starr County, 218 thousand reported
GARCIA, I. Y. — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 218 thousand reported
GUERRA, F.B. ESTATE -B- — gas, PG&E Resources Company, Starr County, 217 thousand reported
I.V. MONTALVO 'C' — gas, Killam Oil Co., Ltd., Starr County, 216 thousand reported
DON CAMERON ET AL G.U. — gas, Dewbre Petroleum Corporation, Starr County, 216 thousand reported
RINGGOLD FARMS — gas, Mortimer Exploration Company, Starr County, 216 thousand reported
LA BRISA 913 — gas, Texas Independent Explor., Inc., Starr County, 216 thousand reported
FINA CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 215 thousand reported
GUTIERREZ — gas, Thorp Petroleum Corporation, Starr County, 215 thousand reported
MONTALVO, E. A. GAS UNIT — gas, Oryx Energy Company, Starr County, 214 thousand reported
DAVENPORT, O. H. HEIRS — gas, Fina Oil & Chemical Company, Starr County, 213 thousand reported
SHELL CONOCO FEE — gas, Shell Western E&P, Starr County, 211 thousand reported
FINA-CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 211 thousand reported
DAVENPORT — gas, Texas Independent Explor., Inc., Starr County, 211 thousand reported
GARCIA L&L CO. — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 210 thousand reported
GARCIA L & L "C" — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 209 thousand reported
SLICK ESTATE — gas, Texas Independent Explor., Inc., Starr County, 208 thousand reported
SLICK, T. B. ESTATE "B-222" — gas, Houston Exploration Company, The, Starr County, 208 thousand reported
MARGO, R.E. ESTATE — gas, Newgulf Petroleum, LLC, Starr County, 208 thousand reported
BENTSEN TRACT IV — gas, Samson Lone Star LP, Starr County, 207 thousand reported
DELGADO, E.F. — gas, Amax Oil & Gas Inc., Starr County, 206 thousand reported
GUERRA, ET AL. — gas, Epstein, Edwin A JR Oper Co Inc, Starr County, 206 thousand reported
HERMANN, A.G. GAS UNIT — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 206 thousand reported
J. NEBLETT — gas, Carrizo Oil & Gas, Inc., Starr County, 206 thousand reported
GUERRA, F. B. "B" — gas, Milagro Exploration, LLC, Starr County, 205 thousand reported
ESCOBAR — gas, Samedan Oil Corporation, Starr County, 205 thousand reported
DE GARZA, J.M. — gas, C.C.O. & G. Company Inc., Starr County, 205 thousand reported
GARZA — gas, Hallwood Petroleum, Inc., Starr County, 205 thousand reported
MARTINEZ FEE — gas, Eog Resources, Inc., Starr County, 205 thousand reported
GUERRA BROS. — gas, Peoples Energy Prod.-TX, L.P., Starr County, 205 thousand reported
GUERRA UNIT — gas, San Patricio Corporation, Starr County, 204 thousand reported
GUERRA GU "D" — gas, Coastal Oil & Gas Corporation, Starr County, 204 thousand reported
REILLY HERIS — gas, Oryx Energy Company, Starr County, 204 thousand reported
H. ACEVEDO GAS UNIT — gas, Suemaur Exploration, Inc., Starr County, 204 thousand reported
HART ET AL — gas, Thorp Petroleum Corporation, Starr County, 203 thousand reported
STATE SLICK D — gas, Fina Oil & Chemical Company, Starr County, 203 thousand reported
LA BRISA R — gas, Texas Independent Explor., Inc., Starr County, 203 thousand reported
GARCIA L&L CO. -C- — gas, Kerr-Mcgee Oil & Gas Onshore LLC, Starr County, 202 thousand reported
MARTINEZ-STATE — gas, Shell Western E&P Inc., Starr County, 202 thousand reported
DE FLORES, M. S. — gas, Tasca Exploration Company, Starr County, 202 thousand reported
FNB MISSION — gas, Peoples Energy Prod.-TX, L.P., Starr County, 202 thousand reported
GARCIA L&L CO. — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 202 thousand reported
CHAMPION, A. A. — gas, Oryx Energy Company, Starr County, 202 thousand reported
DE GARCIA, B. G. — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 202 thousand reported
BENTSEN BROS. -A- — gas, Oryx Energy Company, Starr County, 201 thousand reported
FINA-CONOCO FEE — gas, Fina Oil & Chemical Company, Starr County, 201 thousand reported
MARGO, R.E. HEIRS — gas, Kebo Oil & Gas, Inc., Starr County, 201 thousand reported
GROOS NATIONAL BANK — gas, Mortimer Exploration Company, Starr County, 200 thousand reported
NATIONSBANK — gas, Transtexas Gas Corporation, Starr County, 200 thousand reported
LAGO — oil, Rlu Operating, LLC, Starr County, 199 thousand reported
LA LIEBRE — oil, Bommer Engineering Co., Starr County, 198 thousand reported
CELESTINO GARZA GAS UNIT — gas, Amax Oil & Gas Inc., Starr County, 198 thousand reported
MARGO — gas, Newgulf Petroleum, LLC, Starr County, 197 thousand reported
DE GARCIA, B. G. — gas, Oryx Energy Company, Starr County, 197 thousand reported
SLICK, T.B. ESTATE — gas, Fina Oil & Chemical Company, Starr County, 196 thousand reported
STARRPRO MINERALS B — gas, Legend Natural Gas III, LP, Starr County, 195 thousand reported
YTURRIA L & L -B- — gas, Oryx Energy Company, Starr County, 195 thousand reported
CARRUTH, E.B. JR. TRUST ET AL — gas, Cordele Development Corporation, Starr County, 195 thousand reported
MARTINEZ, F. F., -B- — gas, Samedan Oil Corporation, Starr County, 194 thousand reported
SLICK, T.B. A-535 — gas, Conoco Inc., Starr County, 194 thousand reported
GARZA, A. M., -STATE- — gas, Shell Western E&P Inc., Starr County, 194 thousand reported
TEXACO FEE- GUERRA "A" — oil, Linder Oil Company,A Partnership, Starr County, 194 thousand reported
GREINER — gas, Mueller Engineering Corp., Starr County, 194 thousand reported
COATES — gas, Tri-C Resources, Inc., Starr County, 194 thousand reported
SALINAS, FAUSTO ET AL — gas, Thorp Petroleum Corporation, Starr County, 193 thousand reported
FLORES UNIT — gas, Merit Energy Company, Starr County, 192 thousand reported
LA BRISA L&C — gas, Vastar Resources, Inc., Starr County, 191 thousand reported
EDMUNDS, A. K. — gas, Starco Exploration, Inc., Starr County, 191 thousand reported
HERMANN, E. — gas, Kerr-Mcgee Oil & Gas Onshore LP, Starr County, 191 thousand reported
T. B. SLICK ESTATE 537-222 UNIT — gas, Forest Oil Corporation, Starr County, 191 thousand 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.