| 201 | Gary-Williams Oi | | Oil & Gas Operator | Jun 1989 |
| 202 | Gary-Williams Production Company | Denver, CO 80202 | Oil & Gas Operator | May 2000 |
| 203 | Garza Oil & Gas LLC | Quemado, TX 78877 | Oil Operator | Apr 2025 |
| 204 | Garzaco Operating, LLC | Concepcion, TX 78349 | Oil & Gas Operator | Apr 2025 |
| 205 | Gas & Oil Co | Apollo, PA 15613-1108 | Oil & Gas Operator | Dec 2007 |
| 206 | Gas & Oil Management Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 1974 |
| 207 | Gas & Oil MGMT Assn Inc | Youngsville, PA 16371-1602 | Oil & Gas Operator | Dec 2024 |
| 208 | Gas & Oil Pipe Supply | Millersburg, OH 44654 | Oil & Gas Operator | Dec 2006 |
| 209 | Gas Acquisition Co LTD | Akron, OH 44308 | Oil & Gas Operator | Dec 2017 |
| 210 | Gas Acquisition Corp | | Oil & Gas Operator | Dec 2023 |
| 211 | Gas Chasers Inc. | Claflin, KS 67525 | Gas Operator | Dec 2009 |
| 212 | Gas Compression Services Inc | | Gas Operator | Apr 1994 |
| 213 | Gas Corporation Of America | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2025 |
| 214 | Gas Development Corp. | Broken Arrow, OK 74012 | Oil & Gas Operator | Mar 2015 |
| 215 | Gas Engine & Compressor Serv,Inc | Longview, TX 75615 | Oil & Gas Operator | Feb 2003 |
| 216 | Gas Enhancement Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2014 |
| 217 | Gas Enterprise Company Inc | Wingett Run, OH 45789 | Oil & Gas Operator | Dec 2024 |
| 218 | Gas Exploration | | Gas Operator | Feb 2005 |
| 219 | Gas Gathering Corp. | | Oil Operator | Oct 1997 |
| 220 | Gas Investments, Inc. | | Gas Operator | Dec 1982 |
| 221 | Gas Marketing, Inc. | Stafford, KS 67578 | Oil Operator | Mar 2007 |
| 222 | Gas Masters Of America | | Oil & Gas Operator | Oct 1993 |
| 223 | Gas Masters Of America, Inc. | | Oil & Gas Operator | Nov 2024 |
| 224 | Gas Processors, Inc. | Columbia, MS 39429 | Oil & Gas Operator | Apr 2019 |
| 225 | Gas Producing En | | Oil & Gas Operator | Nov 1983 |
| 226 | Gas Producing Enterprises | Houston, TX 77046 | Oil & Gas Operator | Dec 1983 |
| 227 | Gas Producing Enterprises Inc. | | Oil & Gas Operator | Oct 1985 |
| 228 | Gas Recovery Systems Inc | | Oil & Gas Operator | Aug 2013 |
| 229 | Gas Resources, Inc. | Southern Pine, NC 28387 | Oil & Gas Operator | Mar 2004 |
| 230 | Gas Resources, Limited | | Oil & Gas Operator | Dec 2024 |
| 231 | Gas Rock Corporation | | Oil Operator | Mar 1983 |
| 232 | Gas Supply Corp | | Oil & Gas Operator | Dec 2008 |
| 233 | Gas Tap Corp. | Plano, TX 75075 | Gas Operator | Apr 2025 |
| 234 | Gas Transportation Corporation | | Oil & Gas Operator | Aug 1995 |
| 235 | Gas Ventures LLC | Thermopolis, WY 82443 | Oil & Gas Operator | Oct 2020 |
| 236 | Gas Well Operators | Pampa, TX 79066 | Gas Operator | Nov 2002 |
| 237 | Gas Well Operators, Inc. | Pampa, TX 79066 | Gas Operator | Nov 1997 |
| 238 | Gas Wells, Inc. | Shinnston, WV 26431 | Oil & Gas Operator | Dec 2021 |
| 239 | Gasamat Oil Corp Of Colorado | Boulder, CO 80303 | Oil Operator | Feb 2025 |
| 240 | Gasanadarko LTD | Oklahoma City, OK 73116 | Gas Operator | May 1994 |
| 241 | Gasco Inc | | Oil & Gas Operator | Jun 1998 |
| 242 | Gasco Production Company | Denver, CO 80237 | Oil & Gas Operator | Dec 2015 |
| 243 | Gasearch Inc | Girard, OH 44420 | Oil & Gas Operator | Dec 1985 |
| 244 | Gashoma Inc | Dewey, OK 74029 | Oil & Gas Operator | Oct 2019 |
| 245 | Gaskins Glendell L | Slick, OK 74071 | Oil & Gas Operator | Feb 2025 |
| 246 | Gaskins Ronnie Oil Production | Lawton, OK 73501-4529 | Oil Operator | Jun 2014 |
| 247 | Gaskins William | Lincoln, NE 68516 | Oil Operator | Dec 1998 |
| 248 | Gasoco, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2005 |
| 249 | Gasoil, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Dec 2015 |
| 250 | Gasp Investment LLC | Cherry Tree, PA 15724-7704 | Oil & Gas Operator | Dec 2024 |
| 251 | Gasper Rice Resources, LTD. | Houston, TX 77068 | Oil & Gas Operator | Apr 2025 |
| 252 | Gass Energy LLC | Sugar Grove, PA 16350 | Gas Operator | Dec 2024 |
| 253 | Gassearch Corporation | | Oil & Gas Operator | Dec 2008 |
| 254 | Gassiot Holding Corporation | Coleman, TX 76834 | Oil & Gas Operator | Apr 2016 |
| 255 | Gastar Expl Inc | Houston, TX 77010-3131 | Oil & Gas Operator | Dec 2015 |
| 256 | Gastar Exploration LLC | Tulsa, OK 74136-1921 | Oil & Gas Operator | Jan 2025 |
| 257 | Gastar Exploration Texas, LP | Houston, TX 77010 | Oil & Gas Operator | Oct 2018 |
| 258 | Gastex, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 1995 |
| 259 | Gate King Properties LLC | | Oil & Gas Operator | Dec 2020 |
| 260 | Gate Oil And Gas LTD | Duncan, OK 73533 | Oil Operator | Jan 2004 |
| 261 | Gateway Pipeline Co | Houston, TX 77002 | Gas Operator | Oct 2003 |
| 262 | Gateway Resources U.S.A., Inc. | Bartlesville, OK 74006 | Oil & Gas Operator | Jan 2025 |
| 263 | Gateway Resources, LLC | Wichita, KS 67218 | Oil Operator | Dec 2024 |
| 264 | Gatewood Edward J "Bob" | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
| 265 | Gatoil (U.S.A.), Inc. | | Oil & Gas Operator | Jul 1988 |
| 266 | Gator Development, Inc. | Vernon, TX 76384 | Oil Operator | Dec 2004 |
| 267 | Gator Hawk Gas Co. | | Gas Operator | Dec 2024 |
| 268 | Gator Oil Co | Banner Elk, NC 28604 | Oil & Gas Operator | Dec 2020 |
| 269 | Gator Oil Compan | | Oil Operator | May 1992 |
| 270 | Gauge Oil Company | Luling, TX 78648 | Oil & Gas Operator | Apr 2025 |
| 271 | Gauntt, Inc. | San Marcos, TX 78666 | Oil & Gas Operator | Dec 2024 |
| 272 | Gavilan Petroleum Inc | Park City, UT 84060 | Oil & Gas Operator | Dec 2006 |
| 273 | Gay Drilling Contractors | Duncan, OK 73534-0457 | Oil & Gas Operator | Dec 2014 |
| 274 | Gaylan Hunt Enterprises Inc | Duncan, OK 73533 | Oil & Gas Operator | Feb 2025 |
| 275 | Gaylyn, Inc. | Comanche, TX 76442 | Oil & Gas Operator | Apr 2025 |
| 276 | Gaynor Oil Co. | Sherman, TX 75092 | Oil & Gas Operator | Jun 2002 |
| 277 | Gazalski Richard S Dba Ski Energy | Henryetta, OK 74437-1208 | Oil & Gas Operator | Dec 2020 |
| 278 | GBF Operating LLC | Morrison, CO 80465 | Oil & Gas Operator | Apr 2025 |
| 279 | GBG Operating Corp. | Wichita Falls, TX 76302 | Oil & Gas Operator | Sep 1998 |
| 280 | Gcea, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 281 | Gcer Onshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2015 |
| 282 | Gco Drilling Company | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 283 | Gcofer LLC | Hobbs, NM 88240 | Oil Operator | Apr 2025 |
| 284 | Gcows Operating LLC | Montgomery, TX 77356 | Oil Operator | Apr 2025 |
| 285 | Gda Investments Inc | Oklahoma City, OK 73123-0403 | Oil & Gas Operator | Feb 2025 |
| 286 | Gde Investments La, L.L.C. | | Oil & Gas Operator | Dec 2024 |
| 287 | Gde Tiger Petroleum, LLC | | Oil & Gas Operator | Dec 2024 |
| 288 | Ge Consumer & Industrial | Louisville, KY 40225-0001-0001 | Oil & Gas Operator | Dec 2006 |
| 289 | Ge Oil & Gas LLC | Hastings, OK 73548-4904 | Oil & Gas Operator | Jan 2025 |
| 290 | Gea Oil Drilling LLC | | Oil Operator | Dec 2016 |
| 291 | Gear Petroleum Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2009 |
| 292 | Geb Operating, LLC | | Oil & Gas Operator | Jan 2025 |
| 293 | Gebhard, Paul Robert | Randolph, NY 14772 | Gas Operator | Dec 2023 |
| 294 | Gec Operating, Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2025 |
| 295 | Gecko | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 296 | Gecko Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2006 |
| 297 | Gecko Oil & Gas | Brookesmith, TX 76827 | Oil & Gas Operator | Jun 2007 |
| 298 | Ged Oil Corporation | | Oil & Gas Operator | Aug 2012 |
| 299 | Gedco Oil & Gas, Inc. | | Gas Operator | May 1992 |
| 300 | Gee Oil Service LLC | Stafford, KS 67578 | Oil Operator | Feb 2013 |