| 5201 | DUFF | Tom Green County, TX | Oil & Gas Property | Mar 2025 |
| 5202 | DUFF 'O' 1 | Haskell County, KS | Oil Property | Mar 2015 |
| 5203 | DUFF 7 | Glasscock County, TX | Oil & Gas Property | Mar 2025 |
| 5204 | DUFF A. H. ESTATE | Schleicher County, TX | Oil & Gas Property | Mar 2025 |
| 5205 | DUFF B FEDERAL | Sandoval County, NM | Gas Property | Mar 2025 |
| 5206 | DUFF GAS COM | San Juan County, NM | Oil & Gas Property | Mar 2025 |
| 5207 | DUFF, DONALD 15 | Neosho County, KS | Gas Property | Feb 2025 |
| 5208 | DUFF-SHELL | Kern County, CA | Oil & Gas Property | Apr 2025 |
| 5209 | DUFFER | Eastland County, TX | Oil & Gas Property | Mar 2025 |
| 5210 | DUFFIELD | Eddy County, NM | Oil & Gas Property | Dec 2024 |
| 5211 | DUFFIELD | Bowman County, ND | Oil & Gas Property | Feb 2008 |
| 5212 | DUFFIELD | Clay County, WV | Oil & Gas Property | Dec 2021 |
| 5213 | DUFFIELD | Gilmer County, WV | Gas Property | Dec 2021 |
| 5214 | DUFFIELD | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 5215 | DUFFIELD | Bradford County, PA | Gas Property | Mar 2025 |
| 5216 | DUFFLEMEYER, MICHAEL B. ,. ET AL | Doddridge County, WV | Oil & Gas Property | Dec 2021 |
| 5217 | DUFFMAN 253 | Martin County, TX | Oil & Gas Property | Mar 2025 |
| 5218 | DUFFORD | Ford County, KS | Oil & Gas Property | Jan 2025 |
| 5219 | DUFFY | Wharton County, TX | Oil & Gas Property | Mar 2025 |
| 5220 | DUFFY | Jack County, TX | Oil & Gas Property | Mar 2025 |
| 5221 | DUFFY | Kingfisher County, OK | Oil & Gas Property | Jan 2025 |
| 5222 | DUFFY | Okmulgee County, OK | Gas Property | Feb 2024 |
| 5223 | DUFFY | Franklin County, KS | Oil Property | Feb 2025 |
| 5224 | DUFFY 15-34H | Williams County, ND | Oil & Gas Property | Apr 2025 |
| 5225 | DUFFY ESTATE D | McKean County, PA | Oil & Gas Property | Dec 2024 |
| 5226 | DUFORT | Stephens County, OK | Oil & Gas Property | Feb 2025 |
| 5227 | DUFORT | McClain County, OK | Oil & Gas Property | Feb 2025 |
| 5228 | DUFOUR 32-6 2 | La Plata County, CO | Gas Property | Mar 2025 |
| 5229 | DUGAN | De Soto Parish, LA | Gas Property | Dec 2024 |
| 5230 | DUGAN | Nowata County, OK | Gas Property | May 2016 |
| 5231 | DUGAN | Knox County, OH | Oil Property | Dec 2024 |
| 5232 | DUGAN | Jones County, TX | Oil & Gas Property | Feb 2025 |
| 5233 | DUGAN | Sedgwick County, KS | Oil Property | Sep 2024 |
| 5234 | DUGAN | Knox County, OH | Oil Property | Dec 2024 |
| 5235 | DUGAN | Rio Arriba County, NM | Oil & Gas Property | Mar 2025 |
| 5236 | DUGAN GUY | Knox County, OH | Oil Property | Dec 2024 |
| 5237 | DUGAN TR | Barber County, KS | Oil & Gas Property | Jul 2017 |
| 5238 | DUGAN, HOWARD & RUBY DUGAN | Barbour County, WV | Oil & Gas Property | Dec 2021 |
| 5239 | DUGAS-LEBLANC | Assumption Parish, LA | Oil & Gas Property | Nov 2024 |
| 5240 | DUGAT | Chambers County, TX | Oil & Gas Property | Mar 2025 |
| 5241 | DUGGA BOY 53-40 | Loving County, TX | Oil & Gas Property | Mar 2025 |
| 5242 | DUGGAN | Stafford County, KS | Oil Property | Jan 2025 |
| 5243 | DUGGAN 1-24H | Roger Mills County, OK | Oil & Gas Property | Feb 2025 |
| 5244 | DUGGAN 12 FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 5245 | DUGGAN RWF | Garfield County, CO | Oil & Gas Property | Mar 2025 |
| 5246 | DUGGAN SLAUGHTER | Cochran County, TX | Oil & Gas Property | Mar 2025 |
| 5247 | DUGGAN-HARRELL ( | Stephens County, TX | Oil & Gas Property | Mar 2025 |
| 5248 | DUGGER | Washita County, OK | Oil & Gas Property | Jan 2016 |
| 5249 | DUGGER | Nueces County, TX | Oil & Gas Property | Mar 2025 |
| 5250 | DUGGER | Nueces County, TX | Oil & Gas Property | Feb 2025 |
| 5251 | DUGGER | Roger Mills County, OK | Oil & Gas Property | Mar 2025 |
| 5252 | DUGGER | Dawson County, TX | Oil & Gas Property | Feb 2025 |
| 5253 | DUGGER | Caddo County, OK | Oil & Gas Property | Jan 2025 |
| 5254 | DUGGER | Ellis County, OK | Oil & Gas Property | Mar 2025 |
| 5255 | DUGGER | Caddo Parish, LA | Oil & Gas Property | Nov 2024 |
| 5256 | DUGGER -A | Upshur County, TX | Oil & Gas Property | Mar 2025 |
| 5257 | DUGGER HEWLETT | Somervell County, TX | Oil & Gas Property | Feb 2025 |
| 5258 | DUGGER-SMITH UNIT | Brazos County, TX | Oil & Gas Property | Oct 2021 |
| 5259 | DUGITE | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 5260 | DUGONG | Hughes County, OK | Oil & Gas Property | Feb 2025 |
| 5261 | DUGOUT DRAW FEDERAL | Campbell County, WY | Gas Property | Jun 2012 |
| 5262 | DUGOUT FEDERAL 1-15 | Richland County, MT | Oil & Gas Property | Mar 2025 |
| 5263 | DUHRING | Forest County, PA | Oil & Gas Property | Dec 2024 |
| 5264 | DUIKER STATE | Reeves County, TX | Oil & Gas Property | Feb 2025 |
| 5265 | DUINK | Chautauqua County, NY | Gas Property | Dec 2023 |
| 5266 | DUKE | Lipscomb County, TX | Oil & Gas Property | Mar 2025 |
| 5267 | DUKE | Ohio County, KY | Oil Property | Dec 2023 |
| 5268 | DUKE | Weld County, CO | Oil & Gas Property | Mar 2020 |
| 5269 | DUKE | Hill County, TX | Gas Property | Mar 2025 |
| 5270 | DUKE | Tarrant County, TX | Gas Property | Mar 2025 |
| 5271 | DUKE | Claiborne Parish, LA | Oil & Gas Property | Dec 2024 |
| 5272 | DUKE | Lipscomb County, TX | Oil & Gas Property | Mar 2025 |
| 5273 | DUKE | Grady County, OK | Oil & Gas Property | Feb 2025 |
| 5274 | DUKE | Fisher County, TX | Oil & Gas Property | Feb 2025 |
| 5275 | DUKE | Lipscomb County, TX | Oil & Gas Property | Mar 2025 |
| 5276 | DUKE | Gaines County, TX | Oil & Gas Property | Mar 2025 |
| 5277 | DUKE | Allegany County, NY | Oil & Gas Property | Dec 2023 |
| 5278 | DUKE | Caldwell County, TX | Oil & Gas Property | Mar 2025 |
| 5279 | DUKE | Union County, AR | Oil & Gas Property | Sep 2024 |
| 5280 | DUKE | Ochiltree County, TX | Oil & Gas Property | Mar 2025 |
| 5281 | DUKE | Madison County, TX | Oil & Gas Property | Feb 2025 |
| 5282 | DUKE | Howard County, TX | Oil & Gas Property | Mar 2025 |
| 5283 | DUKE | San Juan County, NM | Oil & Gas Property | Mar 2025 |
| 5284 | DUKE | Grady County, OK | Oil & Gas Property | Jan 2010 |
| 5285 | DUKE | Claiborne Parish, LA | Oil & Gas Property | Nov 2024 |
| 5286 | DUKE | Harrison County, TX | Oil & Gas Property | Feb 2025 |
| 5287 | DUKE | McIntosh County, OK | Gas Property | Feb 2025 |
| 5288 | DUKE 22-27 27 | Reagan County, TX | Oil & Gas Property | Mar 2025 |
| 5289 | DUKE 34X-31 | McKenzie County, ND | Oil & Gas Property | Apr 2025 |
| 5290 | DUKE 40 | Martin County, TX | Oil & Gas Property | Mar 2025 |
| 5291 | DUKE 8-8 | White County, AR | Gas Property | Jun 2024 |
| 5292 | DUKE BASIL | Lipscomb County, TX | Oil & Gas Property | Feb 2025 |
| 5293 | DUKE BASIL JR | Ochiltree County, TX | Oil & Gas Property | Mar 2025 |
| 5294 | DUKE E SHC HR 5H | Harrison County, OH | Gas Property | Mar 2025 |
| 5295 | DUKE ESTATE | Claiborne Parish, LA | Oil & Gas Property | Dec 2024 |
| 5296 | DUKE FLOYD | Limestone County, TX | Oil & Gas Property | Feb 2025 |
| 5297 | DUKE FRANC | Wise County, TX | Oil & Gas Property | Mar 2025 |
| 5298 | DUKE RANCH | Goliad County, TX | Oil & Gas Property | Mar 2025 |
| 5299 | DUKE RUDMAN GAS UNIT | Panola County, TX | Oil & Gas Property | Mar 2025 |
| 5300 | DUKE SHC HR 3H | Harrison County, OH | Gas Property | Mar 2025 |