Oil and gas leases in San Patricio County — page 2

San Patricio County, Texas has 1,284 oil and gas leases with production on file at the Railroad Commission. 440 of them are oil leases and 844 are gas leases. Between them they carry 1,899 wellbores. Reported volumes run from January 1993 to August 2026 and come to 16.0 million barrels of oil and 417.5 million Mcf of gas. 251 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 San Patricio County

How many oil and gas leases are in San Patricio County?: San Patricio County has 1,284 oil and gas leases with production reported to the Railroad Commission of Texas, as of August 2026.
How much oil and gas has San Patricio County produced?: Leases in San Patricio County have reported 16,042,912 barrels of oil (bbl) and 417,529,419 thousand cubic feet of gas (Mcf) to the Railroad Commission of Texas between January 1993 and August 2026.
How many operators are active in San Patricio County?: 251 operators file production returns for leases in San Patricio County.
How much are mineral rights in San Patricio County worth?: There is no single figure: what a mineral or royalty interest in San Patricio County is worth depends on the individual lease, its decline, and the share the owner holds. Each of the 1,284 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 2 of 7

WELDER, J. F. UNIT — gas, Energen Resources Corporation, San Patricio County, 448 thousand reported
HEDRICK — gas, Rincon Petroleum Corporation, San Patricio County, 445 thousand reported
MAYO-OWEN GU — gas, Mobil Producing TX. & N.M. Inc., San Patricio County, 442 thousand reported
MCKAMEY — gas, Dominion Oklahoma Texas E&P, Inc, San Patricio County, 440 thousand reported
MAYO KOONCE GU — gas, Peoples Energy Prod.-TX, L.P., San Patricio County, 434 thousand reported
BAYLOR WHATLEY UNIT — gas, Kebo Oil & Gas, Inc., San Patricio County, 429 thousand reported
WELDER WILDLIFE FOUNDATION — gas, Sandalwood Exploration, L.P., San Patricio County, 428 thousand reported
BALDWIN, J.C. — gas, Fina Oil & Chemical Company, San Patricio County, 427 thousand reported
MOC-WELDER "C" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 420 thousand reported
MAYO OWENS GU — gas, Peoples Energy Prod.-TX, L.P., San Patricio County, 419 thousand reported
COLE GU — gas, Marathon Oil Company, San Patricio County, 417 thousand reported
MCCANN, OLA GAS UNIT — gas, Magnum Producing, LP, San Patricio County, 413 thousand reported
COMPTON, L. A. — gas, Texaco E & P Inc., San Patricio County, 412 thousand reported
SCHNEIDER-KRONKE — gas, Legacy Oil & Gas, Inc., San Patricio County, 409 thousand reported
HAISLEY — gas, Bargo Energy Company, San Patricio County, 409 thousand reported
LANE, S. L. — gas, Smith Production Inc., San Patricio County, 408 thousand reported
MAYO-KOONCE GU — gas, Marathon Oil Company, San Patricio County, 404 thousand reported
MARYLAND TRUST — oil, Kaler Energy Corp., San Patricio County, 404 thousand reported
BALDWIN -A- — gas, Olsen Energy Inc., San Patricio County, 396 thousand reported
MAYO, J. W., A/C 1 — oil, Exxon Corp., San Patricio County, 395 thousand reported
WELDER, E.H. "C" — gas, Marathon Oil Company, San Patricio County, 381 thousand reported
CRITES 'A' — gas, Eog Resources, Inc., San Patricio County, 381 thousand reported
WELDER RANCH — gas, Smith Production Inc., San Patricio County, 380 thousand reported
WELDER "A" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 380 thousand reported
SMITH, N. R. — gas, Texaco E & P Inc., San Patricio County, 378 thousand reported
STATE TRACT 976 — gas, Eog Resources, Inc., San Patricio County, 377 thousand reported
HAY DAY UNIT — gas, Sandalwood Exploration, L.P., San Patricio County, 374 thousand reported
STATE TRACT NO. 26 — gas, Grace Petroleum Corp., San Patricio County, 368 thousand reported
HUNTSINGER — gas, Legacy Oil & Gas, Inc., San Patricio County, 368 thousand reported
HAY DAY UNIT — gas, Sandalwood Exploration, L.P., San Patricio County, 368 thousand reported
WELDER, MINNIE S. — gas, Abraxas Petroleum Corporation, San Patricio County, 367 thousand reported
MAYFIELD — gas, Ceniza Petroleum, Inc., San Patricio County, 359 thousand reported
WELDER SHOUSE — gas, Sandalwood Exploration, L.P., San Patricio County, 358 thousand reported
CITY OF PORTLAND G.U. -B- — gas, Bell, Kelly Inc., San Patricio County, 355 thousand reported
J. F. WELDER UNIT — gas, Smith Production Inc., San Patricio County, 354 thousand reported
ARETO-SOLAR — gas, American Shoreline, Inc., San Patricio County, 354 thousand reported
TAFT PROP. SYNDICATE — gas, Killam Oil Company, San Patricio County, 353 thousand reported
WELDER "A" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 352 thousand reported
BALDWIN, A — gas, Olsen Energy Inc., San Patricio County, 347 thousand reported
WELDER "A" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 347 thousand reported
COMPTON — gas, Marquee Corporation, San Patricio County, 345 thousand reported
VANECEK GAS UNIT — gas, Magnum Producing & Operating Co., San Patricio County, 344 thousand reported
WELDER, J. F. HEIRS — gas, Southern Bay Operating, L.L.C., San Patricio County, 342 thousand reported
COLE GAS UNIT — gas, Marathon Oil Company, San Patricio County, 342 thousand reported
WELDER, R. H. — gas, Smith Production Inc., San Patricio County, 337 thousand reported
BOMER, E. T. — gas, Smith Production Inc., San Patricio County, 337 thousand reported
WELDER, J. F. UNIT — gas, Energen Resources Corporation, San Patricio County, 336 thousand reported
WELDER, MINNIE S. — gas, Abraxas Production Corporation, San Patricio County, 331 thousand reported
ANDERSON FRENCH — gas, Dreyfus, Louis Natural Gas Corp, San Patricio County, 328 thousand reported
CITY OF ARANSAS PASS — gas, Tema Oil And Gas Company, San Patricio County, 326 thousand reported
VIBORA ROSSON — gas, Slawson Exploration Company, Inc, San Patricio County, 324 thousand reported
SOUTHWEST TEXAS CORP — gas, Wapiti Operating, LLC, San Patricio County, 324 thousand reported
WELDER E.H."C" — gas, Marathon Oil Company, San Patricio County, 323 thousand reported
COLE GAS UNIT — gas, Marathon Oil Company, San Patricio County, 322 thousand reported
JACKSON RANCH — gas, Cimarron Engineering Corp., San Patricio County, 319 thousand reported
OELSCHLEGEL, FRANK JR. ET AL — gas, Hughes, Dan A. Company, L.P., San Patricio County, 318 thousand reported
ROSSON, VIBORA — gas, Slawson Exploration Company, Inc, San Patricio County, 317 thousand reported
HARVEY, J.H. UNIT — gas, Magnum Producing, LP, San Patricio County, 317 thousand reported
WELDER "A" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 316 thousand reported
MAYO, BLASCHKE — gas, Cox Resources Corp., San Patricio County, 314 thousand reported
LANE — gas, Marquee Corporation, San Patricio County, 313 thousand reported
WELDER, J. F. UNIT — gas, Smith Production Inc., San Patricio County, 312 thousand reported
PRUETT — gas, DML Exploration, Inc., San Patricio County, 307 thousand reported
COLE G.U. — gas, Eog Resources, Inc., San Patricio County, 304 thousand reported
NUECES BAY STATE TRACT 688 — gas, Eog Resources, Inc., San Patricio County, 301 thousand reported
THOMAS — gas, American Shoreline, Inc., San Patricio County, 299 thousand reported
WELDER, MINNIE S. — oil, Mobil Producing TX. & N.M. Inc., San Patricio County, 299 thousand reported
FISCHER, NELLIE I. — gas, Mo-Jon, Inc., San Patricio County, 297 thousand reported
DYCAS, LOUNA — gas, Averill, W. M. Inc., San Patricio County, 297 thousand reported
SHELL E — gas, Eog Resources, Inc., San Patricio County, 293 thousand reported
WELDER, MINNIE S. — gas, Abraxas Production Corporation, San Patricio County, 293 thousand reported
GRIFFITH & ASSOC. -A- — gas, Texas Western Energy Corporation, San Patricio County, 291 thousand reported
SCHUSTER — gas, Slawson Exploration Company, Inc, San Patricio County, 289 thousand reported
HOSKINSON UNIT — gas, Michael Petroleum Corporation, San Patricio County, 289 thousand reported
HAISLEY — gas, Mission Resources Corporation, San Patricio County, 289 thousand reported
STATE TRACT 324 — gas, Cabot Oil & Gas Corporation, San Patricio County, 289 thousand reported
BAPTIST FOUNDATION OF TX ET AL — gas, Anderson Oil Ltd., San Patricio County, 286 thousand reported
AMER. NAT'L. BANK OF AUSTIN G.U. — gas, Virtex Petroleum Company, Inc., San Patricio County, 286 thousand reported
WELDER "D" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 283 thousand reported
DIMMICK — oil, Dinero Oil Corporation, San Patricio County, 276 thousand reported
BLACKMAN-HUTTO — gas, Slawson Exploration Company, Inc, San Patricio County, 275 thousand reported
WELDER, MINNIE S. — gas, Abraxas Petroleum Corporation, San Patricio County, 274 thousand reported
HUTTO — oil, Goodrich Petroleum Company, San Patricio County, 270 thousand reported
STATE TRACT 975 — gas, Mego Resources, LLC, San Patricio County, 267 thousand reported
JACKSON RANCH — gas, Ampak Oil Company, San Patricio County, 266 thousand reported
WELDER, J. F. HEIRS — gas, Southern Bay Operating, L.L.C., San Patricio County, 262 thousand reported
MAYO OWENS GAS UNIT — gas, Abraxas Petroleum Corporation, San Patricio County, 262 thousand reported
BOYKIN — gas, Midpar L.P., San Patricio County, 256 thousand reported
HARVEY — gas, Langham Petroleum Expl. Corp., San Patricio County, 254 thousand reported
FLOERKE, PAPAGAYO — gas, Slawson Exploration Company, Inc, San Patricio County, 254 thousand reported
WELDER, J. F. HEIRS — gas, Southern Bay Operating, L.L.C., San Patricio County, 253 thousand reported
WELDER HEIRS — gas, Everest Resource Company, San Patricio County, 251 thousand reported
RITCHIE FARMS, LTD — gas, Sandalwood Exploration, L.P., San Patricio County, 244 thousand reported
LANE, E.H. "A" — gas, Marquee Corporation, San Patricio County, 240 thousand reported
LANE — gas, Marquee Corporation, San Patricio County, 239 thousand reported
WELDER SHOUSE — gas, Sandalwood Exploration, L.P., San Patricio County, 238 thousand reported
WELDER, J.F. UNIT — gas, Texaco E & P Inc., San Patricio County, 237 thousand reported
BURROWS, J.C. & J.S. — gas, Smith Production Inc., San Patricio County, 232 thousand reported
WELDER RANCH — gas, Smith Production Inc., San Patricio County, 231 thousand reported
WELDER, J.F. — gas, Kebo Oil & Gas, Inc., San Patricio County, 230 thousand reported
MCCANN, OLA "A" — gas, Memorial Exploration Company, San Patricio County, 230 thousand reported
THOMAS-BROWN — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 229 thousand reported
CURLEE GAS UNIT — gas, Anaqua Oil & Gas, Inc., San Patricio County, 228 thousand reported
WELDER, E. H. — gas, Cummins & Walker Oil Co., Inc., San Patricio County, 226 thousand reported
CARMODY TRUST "A" — gas, Rincon Petroleum Corporation, San Patricio County, 225 thousand reported
MAYO-OWEN GAS UNIT — gas, Mobil Producing TX. & N.M. Inc., San Patricio County, 224 thousand reported
HARVEY — gas, Langham Petroleum Expl. Corp., San Patricio County, 224 thousand reported
PORTLAND GAS UNIT -A- — gas, Bass Enterprises Production Co., San Patricio County, 224 thousand reported
COFFIN, PHYLLIS — gas, Mcguffin, Joe S. Inc., San Patricio County, 221 thousand reported
CORPUS CHRISTI BANK & TRUST — gas, Magnum Producing & Operating Co., San Patricio County, 220 thousand reported
MAYO-KOONCE GU — gas, Marathon Oil Company, San Patricio County, 220 thousand reported
WELDER, E.H. "C" — gas, Marathon Oil Company, San Patricio County, 220 thousand reported
WELDER, J. F. UNIT — gas, Smith Production Inc., San Patricio County, 219 thousand reported
WOMACK, J. Y. — gas, Tierra Mineral Development, L.C., San Patricio County, 217 thousand reported
WINSAUER — gas, Mortimer Exploration Company, San Patricio County, 217 thousand reported
WELDER, E. H., -C- — oil, Marathon Oil Company, San Patricio County, 217 thousand reported
WELDER, J. F. UNIT — gas, Energen Resources Corporation, San Patricio County, 216 thousand reported
MOORE, W. H. — gas, Dreyfus, Louis Natural Gas Corp, San Patricio County, 216 thousand reported
CITY OF PORTLAND G.U. -B- — gas, Cox Exploration, Inc., San Patricio County, 215 thousand reported
FITE, L.E. — gas, Null, W.M. Operations, Inc., San Patricio County, 215 thousand reported
MOORE, S. — gas, Double Play Oil & Gas, Inc, San Patricio County, 214 thousand reported
USHER — oil, A-G-B, Inc., San Patricio County, 213 thousand reported
DIX — gas, Ellsworth, H. P. O&G Properties, San Patricio County, 210 thousand reported
WELDER RANCH — gas, Smith Production Inc., San Patricio County, 208 thousand reported
TIMON, W. F. — gas, Lytle Creek Operating, Inc., San Patricio County, 208 thousand reported
HAMON-HARVEY — gas, Magnum Producing & Operating Co., San Patricio County, 207 thousand reported
BOMER, E. T. — gas, Smith Production Inc., San Patricio County, 206 thousand reported
WELDER RANCH — gas, Smith Production Inc., San Patricio County, 204 thousand reported
WELDER "C" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 203 thousand reported
BAYLOR WHATLEY UNIT — gas, Kebo Oil & Gas, Inc., San Patricio County, 202 thousand reported
HAISLEY, WALDO E. — gas, Torch Operating Company, San Patricio County, 200 thousand reported
JONES, FRED B.UNIT — gas, Abraxas Production Corporation, San Patricio County, 200 thousand reported
MAUCH, W. F. — gas, Esenjay Petroleum Corp., San Patricio County, 199 thousand reported
PICHA OIL UNIT — gas, Kebo Oil & Gas, Inc., San Patricio County, 198 thousand reported
CITY CORPUS CHRISTI — gas, Allegro Investments, Inc., San Patricio County, 197 thousand reported
BURROWS, J. C. & J. S. — gas, Texaco E & P Inc., San Patricio County, 194 thousand reported
DONEY, L. C., JR., GAS UNIT — gas, Marwell Petroleum, Inc., San Patricio County, 192 thousand reported
BAINES, W. M. — oil, Dreyfus, Louis Natural Gas Corp, San Patricio County, 191 thousand reported
WELDER, E. H. "E" — gas, Marathon Oil Company, San Patricio County, 191 thousand reported
PRINCESS PEACH UNIT NO. 1 — gas, Sandalwood Exploration, L.P., San Patricio County, 189 thousand reported
BURROWS, J.C. & J.S. — gas, Texaco E & P Inc., San Patricio County, 189 thousand reported
GARZA — gas, ML Resources, Inc., San Patricio County, 186 thousand reported
MCKAMEY — gas, Dominion Oklahoma Texas E&P, Inc, San Patricio County, 186 thousand reported
BAKER, KATHERINE K. — gas, Richman Petroleum Corp., San Patricio County, 185 thousand reported
KELLOGG GAS UNIT — gas, Marathon Oil Company, San Patricio County, 184 thousand reported
DUGAT UNIT — gas, National Energy Group, Inc., San Patricio County, 181 thousand reported
BRITTAIN-MAYO GAS UNIT — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 181 thousand reported
MOORE "E" — gas, Flow Production Company, San Patricio County, 181 thousand reported
WELDER, E.H. "C" — gas, Marathon Oil Company, San Patricio County, 180 thousand reported
STATE TRACT 25 — gas, Bopco, L.P., San Patricio County, 178 thousand reported
PORTLAND GAS UNIT "A" — gas, Bass Enterprises Production Co., San Patricio County, 177 thousand reported
MARYLAND TRUST — oil, Kaler Energy Corp., San Patricio County, 174 thousand reported
WELDER, MINNIE S. — gas, Abraxas Production Corporation, San Patricio County, 173 thousand reported
WELDER, E. H. "C" — gas, Marathon Oil Company, San Patricio County, 172 thousand reported
WELDER "C" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 171 thousand reported
WELDER, R. H. — gas, Marathon Oil Company, San Patricio County, 170 thousand reported
WELDER "A" — oil, Sandalwood Oil & Gas, Inc., San Patricio County, 168 thousand reported
BOMER, E. T. — gas, Texaco E & P Inc., San Patricio County, 166 thousand reported
WELDER, MINNIE S. — gas, Abraxas Petroleum Corporation, San Patricio County, 164 thousand reported
HUNT, J. M. — oil, Harvey, Mike W. Oil & Gas, San Patricio County, 163 thousand reported
TEX. MED. PROF. BLDG. CORP. — gas, Grace Petroleum Corp., San Patricio County, 162 thousand reported
WELDER, J. F. UNIT — gas, Texaco E & P Inc., San Patricio County, 161 thousand reported
SMITH, H. A. — gas, Texaco E & P Inc., San Patricio County, 160 thousand reported
FLOERKE, MAX M., JR. — gas, Magnum Producing & Operating Co., San Patricio County, 159 thousand reported
PHILLIPS ET AL UNIT — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 159 thousand reported
DUPRIE-FRENCH GU — gas, Eog Resources, Inc., San Patricio County, 156 thousand reported
WELDER, R. H. — oil, Smith Production Inc., San Patricio County, 155 thousand reported
SCHMIDT-HUNT GU — gas, Eland Energy, Inc., San Patricio County, 154 thousand reported
COUNTISS-MCCRACKEN GU — gas, Eog Resources, Inc., San Patricio County, 154 thousand reported
WELDER - FORD "C" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 153 thousand reported
LANE, E.H. "A" — gas, Marquee Corporation, San Patricio County, 151 thousand reported
WELDER RANCH — gas, Smith Production Inc., San Patricio County, 151 thousand reported
HARDWICK — gas, Kebo Oil & Gas, Inc., San Patricio County, 150 thousand reported
WELDER "D" — gas, Scana Petroleum Resources, Inc., San Patricio County, 149 thousand reported
COUNTISS, H.D. — gas, Exxon Corp., San Patricio County, 149 thousand reported
WILLIAMS — gas, Kebo Oil & Gas, Inc., San Patricio County, 146 thousand reported
WELDER "A" — gas, Sandalwood Oil & Gas, Inc., San Patricio County, 146 thousand reported
WELDER RANCH — gas, Smith Production Inc., San Patricio County, 146 thousand reported
MAYO-BLASCHKE UNIT NO. 1 — gas, Sandalwood Exploration, L.P., San Patricio County, 146 thousand reported
HAMON-HARVEY — oil, Magnum Producing & Operating Co., San Patricio County, 145 thousand reported
WELDER, J. F. UNIT — gas, Energen Resources Corporation, San Patricio County, 144 thousand reported
WELDER, J.F. UNIT — gas, Southern Bay Operating, L.L.C., San Patricio County, 144 thousand reported
FISCHER, NELLIE I. — gas, Mo-Jon, Inc., San Patricio County, 144 thousand reported
WELDER, MINNIE S. — gas, Abraxas Production Corporation, San Patricio County, 143 thousand reported
COUNTISS, H. D. A/C 2 — gas, Reserve Operating Corp., San Patricio County, 143 thousand reported
HARVEY — gas, Langham Petroleum Expl. Corp., San Patricio County, 143 thousand reported
WELDER, J.F. UNIT — oil, Texaco E & P Inc., San Patricio County, 142 thousand reported
WELDER G — gas, Consolidated Petro Ptnrs I, LLC, San Patricio County, 140 thousand reported
ELLIS R. R. — gas, Smith Production Inc., San Patricio County, 140 thousand reported
WELDER, M. S. — gas, Abraxas Production Corporation, San Patricio County, 140 thousand reported
WELDER, MINNIE S. — oil, Mobil Producing TX. & N.M. Inc., San Patricio County, 139 thousand reported
WHATLEY — gas, Star Production, Inc., San Patricio County, 138 thousand reported
WELDER — gas, Suemaur Exploration, Inc., San Patricio County, 137 thousand reported
KELLOGG GAS UNIT — gas, Marathon Oil Company, San Patricio County, 137 thousand reported
WELDER "E" — gas, Scana Petroleum Resources, Inc., San Patricio County, 137 thousand reported
WELDER — gas, Union Crude Company, San Patricio County, 136 thousand reported
J H HARVEY UNIT — gas, Magnum Producing & Operating Co., San Patricio County, 130 thousand reported
WELDER, R. H. -A- A/C 1 — oil, Marathon Oil Company, San Patricio County, 130 thousand reported
STATE TRACT 786 — gas, Meridian Resource & Expl LLC,The, San Patricio County, 129 thousand reported
PORTLAND GAS UNIT "A" — gas, Bass Enterprises Production Co., San Patricio County, 129 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.