| 1301 | Pier Oil Company Inc. | | Oil Operator | Sep 2025 |
| 1302 | Pieratt, Ralph | Burlington, KS 66839 | Oil Operator | Aug 1987 |
| 1303 | Pierce & Petersen | Warren, PA 16365 | Oil & Gas Operator | Dec 2024 |
| 1304 | Pierce G R Oil Properties Inc | Oklahoma City, OK 73106 | Oil Operator | Feb 1999 |
| 1305 | Pierce Investments | Weatherford, OK 73096 | Oil Operator | Jul 1994 |
| 1306 | Pierce James E | Warren, PA 16365-0627 | Oil & Gas Operator | Dec 2011 |
| 1307 | Pierce Junction Petroleum Inc. | Houston, TX 77002 | Oil & Gas Operator | May 2010 |
| 1308 | Pierce L H | Healdton, OK 73438-9530 | Oil Operator | Jan 1996 |
| 1309 | Pierce O M Operations | Duncan, OK 73533 | Oil & Gas Operator | Nov 1998 |
| 1310 | Pierce Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Nov 2017 |
| 1311 | Pierce Operating Company, L.L.C. | Bryan, TX 77808 | Oil & Gas Operator | Dec 2018 |
| 1312 | Pierce Patsey R The Estate Of | Duncan, OK 73533-4900 | Oil Operator | Mar 2007 |
| 1313 | Pierce Production Company | Eunice, NM 88231 | Oil & Gas Operator | Oct 2012 |
| 1314 | Pierce Production Company, LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 1315 | Pierce, Ray A. | Eunice, NM 88231 | Oil & Gas Operator | Nov 2004 |
| 1316 | Pierco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Dec 2025 |
| 1317 | Pierre Petroleum Corp. | Borger, TX 79007 | Oil & Gas Operator | Feb 1997 |
| 1318 | Piersol Oil & Gas Company | Belpre, OH 45714 | Oil & Gas Operator | Dec 2021 |
| 1319 | Pierson Max S | Bartlesville, OK 74003-5909 | Oil Operator | Sep 2020 |
| 1320 | Pike Oil & Gas Inc | Pittsfield, IL 62363 | Oil & Gas Operator | Oct 2020 |
| 1321 | Pikeco Inc | Whitesboro, TX 76273 | Oil & Gas Operator | Nov 2001 |
| 1322 | Piland Resources | | Oil & Gas Operator | Mar 2022 |
| 1323 | Pilgrim & Smith Inc | Tulsa, OK 74152 | Oil & Gas Operator | Apr 2015 |
| 1324 | Pilgrim Energy Partners L.L.C. | Fairfield, IL 62837 | Oil Operator | Dec 2025 |
| 1325 | Pillans, Benjamin P. | Abilene, TX 79605 | Gas Operator | Aug 2012 |
| 1326 | Pillar Efs, LLC | Dallas, TX 75204 | Oil & Gas Operator | Dec 2025 |
| 1327 | Pillar Energy Pa LLC | Charleston, WV 25312-5987 | Oil & Gas Operator | Dec 2024 |
| 1328 | Pillar Energy, LLC | Charleston, WV 25312-5987 | Oil & Gas Operator | Dec 2024 |
| 1329 | Pillers Chris | Skiatook, OK 74070-1811 | Oil Operator | Aug 2025 |
| 1330 | Pillows, Burl A. | Houston, TX 77062 | Oil & Gas Operator | Dec 2025 |
| 1331 | Pilot Energy LLC | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2013 |
| 1332 | Pilot Exploration Company | Okmulgee, OK 74447 | Oil & Gas Operator | Jan 2011 |
| 1333 | Pilot Oil & Gas Corporation | | Gas Operator | Dec 2008 |
| 1334 | Pilot Resources, Inc. | | Oil & Gas Operator | May 2013 |
| 1335 | Pima Energy, LLC | Knott, TX 79748 | Oil & Gas Operator | Dec 2025 |
| 1336 | Pin Oak Energy Partners LLC | Akron, OH 44311 | Oil & Gas Operator | Sep 2025 |
| 1337 | Pin Oak Operating, LLC | | Gas Operator | Dec 2021 |
| 1338 | Pin Oak Petroleum Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 1989 |
| 1339 | Pine City Gas LLC | Lucinda, PA 16235-0060 | Oil & Gas Operator | Dec 2024 |
| 1340 | Pine Creek Operating LLC | Colorado SPGS, CO 80903 | Oil & Gas Operator | Jul 2021 |
| 1341 | Pine Haven Resources LLC | Boulder, CO 80305 | Oil Operator | Oct 2025 |
| 1342 | Pine Island Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 1343 | Pine Island Production Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Apr 2012 |
| 1344 | Pine Island Production LLC | | Oil Operator | Jan 2025 |
| 1345 | Pine Meadows Ranch Incorporated | | Oil & Gas Operator | Dec 2001 |
| 1346 | Pine Pipeline, Inc. | | Oil Operator | Dec 1998 |
| 1347 | Pine Prairie Oil Co., Inc. | | Oil & Gas Operator | Nov 1983 |
| 1348 | Pine Ridge Energy | Sugar Grove, PA 16350-6934 | Oil & Gas Operator | Dec 2024 |
| 1349 | Pine Ridge Energy Inc | Cyril, OK 73029 | Oil & Gas Operator | Aug 2025 |
| 1350 | Pine Ridge Operating, L.P. | Waelder, TX 78959 | Oil & Gas Operator | Dec 2025 |
| 1351 | Pine Ridge Petroleum LLC | Moorcroft, WY 82721 | Oil Operator | Oct 2025 |
| 1352 | Pine Top Energy Inc. | | Oil & Gas Operator | May 1997 |
| 1353 | Pine Top Inc | Akron, OH 44313 | Oil & Gas Operator | Dec 2016 |
| 1354 | Pine Valley Central School District | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 1355 | Pine Valley Resources Inc | West Seneca, NY 14224-2244 | Oil & Gas Operator | Dec 1991 |
| 1356 | Pine Wave Energy Partners Op,LLC | Dallas, TX 75205 | Oil & Gas Operator | Dec 2025 |
| 1357 | Pine Wave Energy Partners Operating, LLC | | Gas Operator | Apr 2022 |
| 1358 | Pineco | Laurelville, OH 43135 | Oil & Gas Operator | Dec 2023 |
| 1359 | Pinedale Energy Partners Operating LLC | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2021 |
| 1360 | Pinedale Investment Inc | Pinedale, WY 82941 | Oil & Gas Operator | Oct 2025 |
| 1361 | Pineland Operating Company, LLC | Dallas, TX 75231 | Oil & Gas Operator | Oct 2025 |
| 1362 | Pinevue Farms | Chillicothe, OH 45601 | Oil & Gas Operator | Dec 1993 |
| 1363 | Pinewood Exploration Inc. | Arlington, TX 76096 | Oil & Gas Operator | Oct 2011 |
| 1364 | Pinkston Robert L | Beggs, OK 74421 | Oil Operator | Aug 2025 |
| 1365 | Pinnacle Corporation (The) | Broken Arrow, OK 74012 | Oil & Gas Operator | Nov 2014 |
| 1366 | Pinnacle Energy Group, LLC | Gillette, WY 82717 | Oil & Gas Operator | Nov 2017 |
| 1367 | Pinnacle Energy, LLC | | Oil & Gas Operator | Jan 2025 |
| 1368 | Pinnacle Exploration & Production Co | Kiefer, OK 74041 | Oil & Gas Operator | Aug 2025 |
| 1369 | Pinnacle Exploration Inc | Edmond, OK 73003 | Oil & Gas Operator | Mar 2024 |
| 1370 | Pinnacle Gas Resources, Inc. | Sheridan, WY 82801 | Gas Operator | Mar 2011 |
| 1371 | Pinnacle Mining Company, LLC | | Oil & Gas Operator | Dec 2017 |
| 1372 | Pinnacle Mining Corporation | Midland, TX 79708 | Oil & Gas Operator | Dec 2025 |
| 1373 | Pinnacle Operating Company LLC | Tulsa, OK 74137 | Oil & Gas Operator | Aug 2025 |
| 1374 | Pinnacle Operating Company, Inc. | Shreveport, LA 71135 | Oil & Gas Operator | Dec 2025 |
| 1375 | Pinon Corporation | San Antonio, TX 78266 | Oil & Gas Operator | Jul 2001 |
| 1376 | Pinon Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Sep 2023 |
| 1377 | Pinon Petroleum, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Apr 2004 |
| 1378 | Pintail Minerals Corp. | | Gas Operator | Jun 1992 |
| 1379 | Pintail Oil & Gas, LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2019 |
| 1380 | Pintail Petroleu | | Oil & Gas Operator | Dec 1995 |
| 1381 | Pintail Petroleum Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2010 |
| 1382 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 1383 | Pintail Production Co., Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Dec 2025 |
| 1384 | Pintex Operating Inc. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Feb 2005 |
| 1385 | Pinto Petroleum | Wichita, KS 67211 | Oil Operator | Nov 2001 |
| 1386 | Pinzok, Michael & Linda | Ripley, NY 14775 | Gas Operator | Dec 2024 |
| 1387 | Pioneer Drilling Co | Payne, OH 45880 | Oil & Gas Operator | Dec 1993 |
| 1388 | Pioneer Energy Corporation | Dallas, TX 75204 | Oil & Gas Operator | Dec 2025 |
| 1389 | Pioneer Exploration Company | Houston, TX 77090 | Oil & Gas Operator | Sep 2025 |
| 1390 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Oct 2025 |
| 1391 | Pioneer Exploration, LTD. | Houston, TX 77090 | Oil & Gas Operator | Sep 2008 |
| 1392 | Pioneer Feedyard, LLC | Oakley, KS 67748 | Oil Operator | Jun 2025 |
| 1393 | Pioneer Gas Pipeline, Inc. | San Angelo, TX 76903 | Oil & Gas Operator | Dec 2025 |
| 1394 | Pioneer Natural Res. (GPC), Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1998 |
| 1395 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 1396 | Pioneer Natural Resources Alaska Inc. | | Oil & Gas Operator | Jul 2014 |
| 1397 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Jun 2025 |
| 1398 | Pioneer Of Oklahoma LP | Houston, TX 77090-3655 | Oil & Gas Operator | Jul 2025 |
| 1399 | Pioneer Oil & Gas | South Jordan, UT 84095 | Oil & Gas Operator | Jan 2014 |
| 1400 | Pioneer Oil Company, Inc. | Vincennes, IN 47501 | Oil & Gas Operator | Jun 2025 |