| 201 | Bligh Petroleum, Inc. | | Oil & Gas Operator | Jun 2004 |
| 202 | Block "T" Petroleum, Inc. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2024 |
| 203 | Block T Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Dec 2023 |
| 204 | Blocker Exploration Company | | Oil & Gas Operator | Apr 1983 |
| 205 | Blue Creek Resources, Inc. | | Oil & Gas Operator | May 1990 |
| 206 | Blue Diamond Drilling, Inc. | | Oil Operator | Nov 1995 |
| 207 | Blue Dome Operating, LLC | Tulsa, OK 74103 | Gas Operator | Apr 2024 |
| 208 | Blue Mill Farms, Inc. | | Oil & Gas Operator | Apr 1992 |
| 209 | Blue Ridge Group, Inc. | Bowling Green, KY 42101 | Oil & Gas Operator | Dec 2021 |
| 210 | BMR Oil & Gas, Inc. | | Oil & Gas Operator | Dec 2023 |
| 211 | Bo Luvan | | Oil & Gas Operator | Oct 2003 |
| 212 | Bob Bertolet | | Oil & Gas Operator | Dec 2001 |
| 213 | Bob Bertolet, J Dale IV,Munoco | | Oil Operator | Sep 1991 |
| 214 | Bob L. Herd | | Oil & Gas Operator | Dec 1979 |
| 215 | Bob L. Herd & Petrofunds | | Oil & Gas Operator | Mar 1984 |
| 216 | Bob R. Hyde Co. | | Oil Operator | May 1986 |
| 217 | Bob Sibley | | Oil & Gas Operator | Jan 2024 |
| 218 | Bobby G. Martin Oil & Gas Co. | | Oil Operator | Nov 1990 |
| 219 | Bobby Jenny | | Gas Operator | Dec 2001 |
| 220 | Bobby Procell | | Oil & Gas Operator | Feb 2001 |
| 221 | Bobby R. Hale | | Oil Operator | Dec 1992 |
| 222 | Boca Production Inc | | Oil & Gas Operator | Jun 2002 |
| 223 | Bodcaw Company | | Oil & Gas Operator | Oct 1979 |
| 224 | Bodcaw Company Et Al | | Oil & Gas Operator | Oct 1979 |
| 225 | Bois D'Arc Offshore LTD. | Houston, TX 77002 | Oil & Gas Operator | Aug 2008 |
| 226 | Bois D'Arc Operating Corporation | Houston, TX 77040 | Oil & Gas Operator | Jan 2000 |
| 227 | Bolinger Oil L.L.C. | | Oil Operator | Nov 2023 |
| 228 | Bomar Oil & Gas, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2021 |
| 229 | Bon Oil Company, Inc. | | Oil & Gas Operator | Nov 1993 |
| 230 | Bonanza Salvage & Prod. Co Inc | | Oil & Gas Operator | Oct 2005 |
| 231 | Bonita Hydrocarbons Company | Dallas, TX 75229 | Oil & Gas Operator | Jun 2008 |
| 232 | Bonner & Carter | | Oil & Gas Operator | Sep 1988 |
| 233 | Booher Energy, LLC | | Oil Operator | Dec 2023 |
| 234 | Booher Engineering, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 235 | Bopco, L.P. | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 236 | Borden, Inc. | Columbus, OH 43215 | Oil & Gas Operator | Mar 1990 |
| 237 | Bottomland Energy, LLC | | Oil Operator | Jan 2024 |
| 238 | Bowie Operating Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2011 |
| 239 | Boyter Brothers | | Oil Operator | Jul 1995 |
| 240 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jan 2024 |
| 241 | BP Exploration Inc | | Oil & Gas Operator | May 1993 |
| 242 | BPR Energy, Inc. | | Oil & Gas Operator | Apr 2021 |
| 243 | BPX (KCS Resources), LLC | | Oil & Gas Operator | Feb 2022 |
| 244 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2024 |
| 245 | Brad Acree Pet. Consultants | | Oil & Gas Operator | Apr 1986 |
| 246 | Bradco Oil & Gas Company | | Oil & Gas Operator | Dec 1980 |
| 247 | Bradford Oil Company | Denver, CO 80249 | Oil & Gas Operator | Mar 2024 |
| 248 | Bradford Oil LLC | | Oil Operator | Dec 2023 |
| 249 | Bralorne International, Inc. | | Oil Operator | Jan 1987 |
| 250 | Brammer Engineering, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Apr 2024 |
| 251 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Apr 2024 |
| 252 | Brammer-Keystone Energy, L.L.C. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 253 | Branch Investment Corporation | | Oil & Gas Operator | Dec 2023 |
| 254 | Branta Production Company LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2024 |
| 255 | Brasseaux Oil Company | Wichita Falls, TX 76309 | Oil & Gas Operator | Mar 2008 |
| 256 | Bray Drilling Co., Inc. | | Oil Operator | Feb 1982 |
| 257 | Brazos River LLC | | Oil & Gas Operator | Apr 2002 |
| 258 | Brbco, LLC | | Oil & Gas Operator | Dec 2023 |
| 259 | Breakthrough Ventures, LLC | | Oil Operator | Jan 2024 |
| 260 | Brechtel Energy Corporation | | Oil & Gas Operator | Sep 2008 |
| 261 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2024 |
| 262 | Brehm Exploration, Inc. | | Oil & Gas Operator | Mar 1995 |
| 263 | Breitburn Operating, LP | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 264 | Brent Exploration Inc. | | Oil & Gas Operator | Apr 1983 |
| 265 | Breton Sound Holdings, LLC | | Oil & Gas Operator | Dec 2023 |
| 266 | Brewton And Martin | | Oil Operator | Dec 1997 |
| 267 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 268 | Brian C. Register | | Oil & Gas Operator | Jun 2011 |
| 269 | Bridas Energy USA, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Aug 2008 |
| 270 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 271 | Bridges Drilling | | Oil & Gas Operator | Jan 2024 |
| 272 | Bridges Oil Co Etal | | Oil Operator | Dec 1996 |
| 273 | Bridwell Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 274 | Bridwell Oil Management, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2024 |
| 275 | Bridwell Oil MGMT Of Al, LLC | | Oil & Gas Operator | Apr 2006 |
| 276 | Briggs Operating Company | | Oil & Gas Operator | Nov 1998 |
| 277 | Briggs Properties, L.L.C. | | Oil Operator | Mar 2015 |
| 278 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 279 | Bright & Company | The Colony, TX 75056 | Oil & Gas Operator | May 2015 |
| 280 | Bright & Schiff | | Oil & Gas Operator | Dec 1977 |
| 281 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 282 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 283 | British-Borneo Exploration Inc | | Oil & Gas Operator | Dec 1999 |
| 284 | Britlind Oil LLC | | Oil & Gas Operator | Dec 2020 |
| 285 | Brix Operating LLC | | Gas Operator | Apr 2021 |
| 286 | Broad Oak Energy, Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Jul 2011 |
| 287 | Broad Street Financial Co. | | Oil & Gas Operator | Nov 1998 |
| 288 | Brock Energy Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 1986 |
| 289 | Brock Exploration Corporation | New Orleans, LA 70112-1707 | Oil & Gas Operator | Jan 1999 |
| 290 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 291 | Brock Petroleum Corporation | | Oil & Gas Operator | Sep 1984 |
| 292 | Broco Oil, LP | | Oil Operator | Dec 2023 |
| 293 | Bronco Resources Inc. | | Oil Operator | Dec 1984 |
| 294 | Brooklyn Union Expl. Co., Inc. | | Oil & Gas Operator | Jul 1994 |
| 295 | Brooks And Lee | | Oil & Gas Operator | Dec 1994 |
| 296 | Brooks Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | Apr 2024 |
| 297 | Brookston Energy, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Apr 2024 |
| 298 | Brookwater Energy Services, LLC | | Oil & Gas Operator | Jan 2024 |
| 299 | Brown & McKenzie, Inc. | | Oil & Gas Operator | May 1984 |
| 300 | Brown Oil Properties | | Oil Operator | Nov 1983 |