| 3201 | Bloomfield Partners II LLC | | Oil & Gas Operator | Dec 2005 |
| 3202 | Bloomingdale Oil LLC | | Oil Operator | Dec 2024 |
| 3203 | Bloxom, John Tom | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2007 |
| 3204 | BLS Oil & Gas LLC | Dubois, PA 15801-0039 | Oil & Gas Operator | Dec 2024 |
| 3205 | BLS Production Co., Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 3206 | BLS Resources, Inc. | Rosharon, TX 77583 | Oil & Gas Operator | Feb 2001 |
| 3207 | Blu Oil Inc | Fairlawn, OH 44334 | Oil & Gas Operator | Dec 2024 |
| 3208 | Blubaugh Charles | | Oil Operator | Feb 1995 |
| 3209 | Blubaugh David | Danville, OH 43014 | Oil & Gas Operator | Dec 2007 |
| 3210 | Blubaugh Marvin C | Tonkawa, OK 74653-4739 | Oil & Gas Operator | Nov 2014 |
| 3211 | Blubaugh Ronald D | Tonkawa, OK 74653-0066 | Oil & Gas Operator | Sep 2014 |
| 3212 | Bluco Production Co., Inc. | Austin, TX 78716 | Oil & Gas Operator | Jul 2025 |
| 3213 | Blue & Gray Energy Inc | | Oil & Gas Operator | Jun 2011 |
| 3214 | Blue Bay Oil & Gas, L L C | | Gas Operator | Jan 2018 |
| 3215 | Blue Bear Energy LLC | Coalgate, OK 74538-3898 | Gas Operator | May 2025 |
| 3216 | Blue Bison Operating LLC | Chickasha, OK 73018 | Oil & Gas Operator | Apr 2025 |
| 3217 | Blue Cedar Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 3218 | Blue Chip Oil Inc | | Oil & Gas Operator | Jun 2025 |
| 3219 | Blue Creek Gas Co. | | Oil & Gas Operator | Jun 2014 |
| 3220 | Blue Creek Inc | Fort Worth, TX 76181 | Oil & Gas Operator | Dec 2002 |
| 3221 | Blue Creek Resources, Inc. | | Oil & Gas Operator | May 1990 |
| 3222 | Blue Devil Exploration LLC | Tulsa, OK 74103-4217 | Oil & Gas Operator | Jan 2024 |
| 3223 | Blue Diamond Drilling, Inc. | | Oil Operator | Nov 1995 |
| 3224 | Blue Diamond Holdings, LLC | Wellsville, KS 66092 | Oil Operator | Dec 2009 |
| 3225 | Blue Diamond Mountain, LLC | Marble Falls, TX 78654 | Oil Operator | Jul 2025 |
| 3226 | Blue Dolphin Production LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | May 2025 |
| 3227 | Blue Dome Operating, LLC | Tulsa, OK 74119 | Gas Operator | Jul 2025 |
| 3228 | Blue Duck Corporation | Mont Belvieu, TX 77580 | Oil & Gas Operator | Sep 2011 |
| 3229 | Blue Energy LLC | Scottsdale, AZ 85250 | Oil & Gas Operator | Dec 2020 |
| 3230 | Blue Flame Energy Corp | Pikeville, KY 41501 | Oil & Gas Operator | Dec 2023 |
| 3231 | Blue Goose Drill | | Oil Operator | Aug 1991 |
| 3232 | Blue Goose Drilling Company, Inc. | Great Bend, KS 67530 | Oil Operator | Mar 2025 |
| 3233 | Blue Grass Energy, Inc. | Houston, TX 77057 | Oil & Gas Operator | May 2025 |
| 3234 | Blue Group Operating, Inc. | Spencer, WV 25276 | Oil & Gas Operator | Nov 2021 |
| 3235 | Blue Jay Operating, LLC | Fort Worth, TX 76107 | Gas Operator | Dec 2009 |
| 3236 | Blue Lake Gas Storage Co | | Oil & Gas Operator | Oct 2016 |
| 3237 | Blue Marble Resources Op, LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2019 |
| 3238 | Blue Mill Farms, Inc. | | Oil & Gas Operator | Apr 1992 |
| 3239 | Blue Mountain Company, Inc. | Wichita, KS 67212 | Oil Operator | Feb 1999 |
| 3240 | Blue Oil, Inc. | Burnet, TX 78611 | Oil & Gas Operator | Jul 2025 |
| 3241 | Blue Owl Energy LLC | Canada, 00100 | Oil Operator | Jul 2025 |
| 3242 | Blue Quail Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Dec 2004 |
| 3243 | Blue Quail Oil Co. | Midland, TX 79706 | Oil & Gas Operator | Jul 2025 |
| 3244 | Blue Ridge Group, Inc. | Bowling Green, KY 42101 | Oil & Gas Operator | Dec 2023 |
| 3245 | Blue Ridge Oil & Gas Exp., Inc. | Belleville, MI 48111 | Gas Operator | Jul 1994 |
| 3246 | Blue Ridge Operating Company,Inc | Ashland, OR 97520 | Oil & Gas Operator | Oct 1998 |
| 3247 | Blue Ridge Operating LLC | Willis, TX 77378 | Oil Operator | Jul 2025 |
| 3248 | Blue Ridge Resources, LLC | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 3249 | Blue River Inc. | Abilene, TX 79608 | Oil Operator | Jul 2025 |
| 3250 | Blue Ruby Operating, LLC | Midland, TX 79706 | Oil & Gas Operator | Nov 2020 |
| 3251 | Blue Sky Investments LLC | Harper, KS 67058 | Oil Operator | Dec 2009 |
| 3252 | Blue Sky NM, Inc. | Houston, TX 77024 | Oil Operator | Oct 2017 |
| 3253 | Blue Spruce Operating LLC | Pinedale, WY 82941 | Oil & Gas Operator | Apr 2025 |
| 3254 | Blue Star Energy, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Jul 2025 |
| 3255 | Blue Star Natural Resources, LLC | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2025 |
| 3256 | Blue Star Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Jul 2025 |
| 3257 | Blue Steel Investments, LLC | Edmond, OK 73013 | Oil Operator | Oct 2024 |
| 3258 | Blue Tip Castlegate, Inc | Erie, KS 66733 | Gas Operator | Jun 2016 |
| 3259 | Blue Tip Energy Wyoming Inc | Houston, TX 77284 | Oil Operator | Jun 2016 |
| 3260 | Blue Top Crude Oil Co., Inc. | Farlington, KS 66734 | Oil Operator | Mar 2025 |
| 3261 | Blue Top Energy LLC | Westport, CT 06880 | Oil Operator | Dec 2019 |
| 3262 | Blue Valley Petroleum, LTD. | | Oil Operator | Jun 1991 |
| 3263 | Blue Water Resources LLC | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2025 |
| 3264 | Blue Water Solutions LLC | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | May 2025 |
| 3265 | Blue Wing Energy, Inc. | Portland, TX 78374 | Oil & Gas Operator | Jul 2025 |
| 3266 | Bluebird Energy, LLC | Billings, MT 59102 | Oil Operator | Jan 2025 |
| 3267 | Bluebird Production, Inc. | Great Bend, KS 67530 | Oil Operator | Nov 2011 |
| 3268 | Bluebonnet Energy Corporation | Englewood, CO 80112 | Oil & Gas Operator | Sep 2015 |
| 3269 | Bluebonnet Exploration Company | New Braunfels, TX 78130 | Oil & Gas Operator | Apr 2018 |
| 3270 | Bluebonnet Land & Cattle Co. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 3271 | Bluebonnet Oil & Gas | Three Rivers, TX 78071 | Oil & Gas Operator | Jul 2025 |
| 3272 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Apr 2025 |
| 3273 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | May 2025 |
| 3274 | Bluecrest Alaska Operating LLC | | Oil & Gas Operator | Jun 2025 |
| 3275 | Bluefin Resources LLC | Houston, TX 77079 | Oil & Gas Operator | Oct 2023 |
| 3276 | Bluegrass Exploration LLC | | Oil Operator | Dec 2023 |
| 3277 | Bluehawk Properties Inc | Riverside, CA 92517-1045 | Oil & Gas Operator | Dec 2016 |
| 3278 | Bluejacket Operating, LLC | | Oil Operator | Mar 2025 |
| 3279 | Bluejay Energy Corporation | Waxahachie, TX 75168 | Oil Operator | Feb 2008 |
| 3280 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2025 |
| 3281 | Blueridge Gas Partners, LLC | Spicewood, TX 78669 | Oil & Gas Operator | Dec 2021 |
| 3282 | Blueridge Petroleum Corporation | Edmond, OK 73003 | Oil & Gas Operator | Mar 2025 |
| 3283 | Bluestem Energy Holdings, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2015 |
| 3284 | Bluestem Natural Gas LLC | Bixby, OK 74008 | Oil & Gas Operator | Jul 2025 |
| 3285 | Bluestem Resources LLC | Kerrville, TX 78028 | Oil & Gas Operator | Jul 2025 |
| 3286 | Bluestem, Inc | Cedar Vale, KS 67024 | Oil Operator | Dec 2014 |
| 3287 | Bluestone Natural Res. II, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2019 |
| 3288 | Bluestone Natural Resources, LLC | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2015 |
| 3289 | Bluestone Production Company LP | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2007 |
| 3290 | Bluetop Oil Comp | | Oil Operator | Nov 1995 |
| 3291 | Bluewater Gas Storage LLC | | Oil Operator | Jun 2025 |
| 3292 | Bluff City Pipe & Supply Co. | | Oil Operator | Jan 1987 |
| 3293 | Bluff Creek Petroleum, LLC | Abilene, TX 79603 | Oil & Gas Operator | Jul 2025 |
| 3294 | Bluff Creek Ridge, Inc. | Anthony, KS 67003 | Oil & Gas Operator | Mar 2025 |
| 3295 | Bluff LTD (The) Partnership | Woodward, OK 73801-3160 | Oil Operator | Dec 1999 |
| 3296 | Bluff Oil Corporation | Newkirk, OK 74647 | Oil & Gas Operator | Jan 2013 |
| 3297 | BLX Inc | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 3298 | BM Oil Company, LLC | Olney, TX 76374 | Oil Operator | Nov 2021 |
| 3299 | BMB Oil Production | Coleman, TX 76834 | Oil & Gas Operator | Feb 2007 |
| 3300 | BMBD Enterprises, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2025 |