| 60301 | ISLAND CREEK COAL | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 60302 | ISLAND CREEK COAL C | McDowell County, WV | Gas Property | Dec 2021 |
| 60303 | ISLAND CREEK COAL CO | Hopkins County, KY | Oil & Gas Property | Dec 2021 |
| 60304 | ISLAND LAKE 6092 12-24H | Burke County, ND | Oil & Gas Property | Sep 2024 |
| 60305 | ISLAND PARK B | Garfield County, CO | Oil & Gas Property | Jan 2024 |
| 60306 | ISLAND RANCH | Garfield County, CO | Oil & Gas Property | Aug 2024 |
| 60307 | ISLAND U | Uintah County, UT | Oil & Gas Property | Dec 2015 |
| 60308 | ISLAND U | Uintah County, UT | Oil & Gas Property | Sep 2024 |
| 60309 | ISLAND UNIT | Uintah County, UT | Oil & Gas Property | Sep 2024 |
| 60310 | ISLE | Montgomery County, KS | Gas Property | Jul 2024 |
| 60311 | ISLE ROYAL 148-95-02A-11H-TF-LL | Dunn County, ND | Oil & Gas Property | Sep 2024 |
| 60312 | ISLER FE | Chaves County, NM | Gas Property | Aug 2024 |
| 60313 | ISLER FEDERAL | Chaves County, NM | Oil & Gas Property | Jun 2017 |
| 60314 | ISLER PENNZOIL FEDERAL | Chaves County, NM | Gas Property | Apr 2020 |
| 60315 | ISLES LANE | Caddo Parish, LA | Oil Property | Jul 2024 |
| 60316 | ISLEY I | Gregg County, TX | Oil & Gas Property | Aug 2024 |
| 60317 | ISMAY FLODINE | San Juan County, UT | Oil & Gas Property | Sep 2024 |
| 60318 | ISMERT 2 | Reno County, KS | Oil & Gas Property | Jun 2024 |
| 60319 | ISOM | Texas County, OK | Oil & Gas Property | Aug 2024 |
| 60320 | ISOM | Stevens County, KS | Gas Property | Jul 2024 |
| 60321 | ISOM | Hopkins County, TX | Oil & Gas Property | Aug 2024 |
| 60322 | ISON | Elliott County, KY | Oil Property | Oct 2022 |
| 60323 | ISON, ANDERSON | Elliott County, KY | Oil & Gas Property | Dec 2015 |
| 60324 | ISON, CALLIE | Letcher County, KY | Oil & Gas Property | Dec 2021 |
| 60325 | ISON, JAMES D | Letcher County, KY | Gas Property | Dec 2019 |
| 60326 | ISON, JEFFERSON | Letcher County, KY | Gas Property | Dec 2020 |
| 60327 | ISON, JESSE | Letcher County, KY | Oil & Gas Property | Dec 2021 |
| 60328 | ISON, MOSES 7 | Letcher County, KY | Gas Property | Dec 2020 |
| 60329 | ISON, O D | Elliott County, KY | Oil & Gas Property | Dec 2019 |
| 60330 | ISON, TIVIS & REEDA | Elliott County, KY | Oil & Gas Property | Dec 2018 |
| 60331 | ISPOCOGEE | Tulsa County, OK | Oil Property | Sep 2024 |
| 60332 | ISRAEL | Ford County, KS | Oil Property | Jul 2024 |
| 60333 | ISRAEL | Wise County, TX | Oil & Gas Property | Aug 2024 |
| 60334 | ISRAEL | Morton County, KS | Oil & Gas Property | Jul 2024 |
| 60335 | ISRAEL BARNETT | Jefferson County, OK | Oil Property | Aug 2024 |
| 60336 | ISRAEL GAS UNIT | Stanton County, KS | Gas Property | Jul 2024 |
| 60337 | ISSLER | Chautauqua County, NY | Gas Property | Dec 2023 |
| 60338 | ISZLEY-USA | McKenzie County, ND | Oil & Gas Property | Sep 2024 |
| 60339 | ITALIAN STALLION | Fayette County, TX | Oil & Gas Property | Aug 2024 |
| 60340 | ITCH STATE | Lea County, NM | Oil & Gas Property | Sep 2024 |
| 60341 | ITHACA 15 14 | Eddy County, NM | Oil & Gas Property | Sep 2024 |
| 60342 | ITHACA 42 | Glasscock County, TX | Oil & Gas Property | Aug 2024 |
| 60343 | ITHAMAR 41-13TFH | Dunn County, ND | Oil & Gas Property | Sep 2024 |
| 60344 | ITS HEDLEY UNIT 17-27 | Cochran County, TX | Oil & Gas Property | Aug 2024 |
| 60345 | ITTNER | Cheyenne County, NE | Oil Property | Dec 2023 |
| 60346 | IVA 1-19 | McClain County, OK | Oil & Gas Property | Sep 2024 |
| 60347 | IVA 1-6H | Williams County, ND | Oil & Gas Property | Sep 2024 |
| 60348 | IVA JO | Caddo County, OK | Oil & Gas Property | Aug 2024 |
| 60349 | IVA O MCCABE 1409 | Canadian County, OK | Oil & Gas Property | Aug 2024 |
| 60350 | IVA THOMSON | Clearfield County, PA | Gas Property | Dec 2023 |
| 60351 | IVAN | McKenzie County, ND | Oil & Gas Property | Sep 2024 |
| 60352 | IVAN C FETTERMAN | Indiana County, PA | Gas Property | Dec 2023 |
| 60353 | IVAN CS FED | Campbell County, WY | Gas Property | Aug 2018 |
| 60354 | IVAN FAIL | Wilson County, KS | Gas Property | Jul 2024 |
| 60355 | IVAN GEHRINGER | Bottineau County, ND | Oil Property | Sep 2024 |
| 60356 | IVAN HECKER USA 41-6H | Dunn County, ND | Oil & Gas Property | Sep 2024 |
| 60357 | IVAN RIVER UNIT | Tyonek Quadrangle, AK | Gas Property | Sep 2024 |
| 60358 | IVAN W LEAMER | Clearfield County, PA | Gas Property | Dec 2023 |
| 60359 | IVAR THE BONELESS FEDERAL | Lea County, NM | Oil & Gas Property | Aug 2024 |
| 60360 | IVAS SMITH 0 | Live Oak County, TX | Oil & Gas Property | Aug 2024 |
| 60361 | IVENS | Sherman County, TX | Gas Property | Aug 2024 |
| 60362 | IVENS | Sherman County, TX | Oil & Gas Property | Aug 2024 |
| 60363 | IVER & MINNIE | Stark County, ND | Oil & Gas Property | Sep 2024 |
| 60364 | IVER GRAVSETH | Bottineau County, ND | Oil Property | Sep 1960 |
| 60365 | IVERS | La Plata County, CO | Gas Property | Sep 2024 |
| 60366 | IVERSEN | Richland County, MT | Oil & Gas Property | Sep 2024 |
| 60367 | IVERSON | Richland County, MT | Oil & Gas Property | Sep 2024 |
| 60368 | IVERSON | Liberty County, MT | Oil & Gas Property | May 2024 |
| 60369 | IVERSON | Mountrail County, ND | Oil & Gas Property | Sep 2024 |
| 60370 | IVERSON | Roosevelt County, MT | Oil & Gas Property | Aug 2024 |
| 60371 | IVERSON | Andrews County, TX | Oil & Gas Property | Aug 2024 |
| 60372 | IVERSON | Richland County, MT | Oil & Gas Property | Aug 2024 |
| 60373 | IVERSON | Andrews County, TX | Oil & Gas Property | Aug 2024 |
| 60374 | IVERSON | McKenzie County, ND | Oil & Gas Property | Sep 2024 |
| 60375 | IVERSON | Pondera County, MT | Gas Property | Jun 2024 |
| 60376 | IVERSON 14-11H | Williams County, ND | Oil & Gas Property | Sep 2024 |
| 60377 | IVERSON 14-23H | Williams County, ND | Oil & Gas Property | Sep 2024 |
| 60378 | IVERSON 17 | Martin County, TX | Oil & Gas Property | Aug 2024 |
| 60379 | IVERSON USA 14-26TFH | McKenzie County, ND | Oil & Gas Property | Sep 2024 |
| 60380 | IVERSON-COWDEN | Winkler County, TX | Oil & Gas Property | Mar 2009 |
| 60381 | IVES | Seward County, KS | Gas Property | Jul 2024 |
| 60382 | IVESTOR | Wheeler County, TX | Oil & Gas Property | Aug 2024 |
| 60383 | IVEY | Eddy County, NM | Oil & Gas Property | Sep 2024 |
| 60384 | IVEY | Jack County, TX | Oil & Gas Property | Aug 2024 |
| 60385 | IVEY | Pittsburg County, OK | Gas Property | Aug 2024 |
| 60386 | IVEY | Adams County, CO | Oil & Gas Property | Aug 2024 |
| 60387 | IVEY | Hockley County, TX | Oil & Gas Property | Aug 2024 |
| 60388 | IVEY | Hockley County, TX | Oil & Gas Property | Aug 2024 |
| 60389 | IVEY LC 26-36 | Adams County, CO | Oil & Gas Property | Aug 2024 |
| 60390 | IVEY RANCH | Dimmit County, TX | Oil & Gas Property | Aug 2024 |
| 60391 | IVEY UNIT | Karnes County, TX | Oil & Gas Property | Aug 2024 |
| 60392 | IVEY, WILL | Madison County, TX | Oil & Gas Property | Aug 2024 |
| 60393 | IVINS 1 | Blaine County, OK | Oil & Gas Property | Aug 2024 |
| 60394 | IVINS 1-1 | Blaine County, OK | Oil & Gas Property | Nov 2015 |
| 60395 | IVORY | Rio Blanco County, CO | Gas Property | Dec 2022 |
| 60396 | IVORY | Grant Parish, LA | Oil Property | May 2024 |
| 60397 | IVORY | Carter County, OK | Oil & Gas Property | Aug 2024 |
| 60398 | IVORY | De Soto Parish, LA | Gas Property | Jun 2024 |
| 60399 | IVORY | Gonzales County, TX | Oil & Gas Property | Aug 2024 |
| 60400 | IVORY ACQ | Marion County, TX | Oil & Gas Property | Aug 2024 |