| 20501 | Newhaven Operating Inc | | Oil & Gas Operator | Dec 1998 |
| 20502 | Newkumet Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 20503 | Newland Farm | Freedom, NY 14065 | Gas Operator | Dec 2024 |
| 20504 | Newland Oil Comp | | Oil Operator | Sep 1996 |
| 20505 | Newman & Scott | Duncan, OK 73534 | Oil & Gas Operator | Mar 2024 |
| 20506 | Newman Bros Drilling | | Oil & Gas Operator | Apr 2004 |
| 20507 | Newman Corporation | Harleton, TX 75651 | Oil & Gas Operator | Aug 2024 |
| 20508 | Newman Cubed, Inc. | Fort Worth, TX 76147 | Oil & Gas Operator | Dec 2025 |
| 20509 | Newman Operating Company | Freer, TX 78357 | Oil & Gas Operator | Jun 2021 |
| 20510 | Newman, John A. | Joplin, MO 64804 | Oil & Gas Operator | Jan 2001 |
| 20511 | Newmo Company | | Oil & Gas Operator | Dec 2001 |
| 20512 | Newmont Oil Co. & Colorado | | Oil & Gas Operator | Mar 1978 |
| 20513 | Newmont Oil Company | | Oil & Gas Operator | Sep 1988 |
| 20514 | Newpark Drilling Fluids LLC | Clinton, OK 73601 | Oil Operator | Dec 2013 |
| 20515 | Newpark Environmental SVCS LLC | Lafayette, LA 70506 | Oil Operator | Jul 2014 |
| 20516 | Newpek, LLC | Irving, TX 75039 | Oil & Gas Operator | Sep 2016 |
| 20517 | Newport Gas Partners LLC | Gillette, WY 82716 | Oil & Gas Operator | Oct 2025 |
| 20518 | Newport Oil Corporation | Clearwater, FL 33755 | Oil & Gas Operator | Jul 2011 |
| 20519 | Newport Operating, LLC | Burkburnett, TX 76354 | Oil Operator | Dec 2025 |
| 20520 | Newport Operators, LLC | | Oil & Gas Operator | Jan 2019 |
| 20521 | Newstar Energy Of Texas L.L.C. | East Lansing, MI 48826 | Oil & Gas Operator | Mar 2008 |
| 20522 | Newstar Energy USA Inc | Thornville, OH 43076 | Oil & Gas Operator | Aug 2004 |
| 20523 | Newton Corp.,The | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 20524 | Newton Steve Drilling | Worland, WY 82401 | Oil Operator | Apr 2001 |
| 20525 | Newton Well Service | New Braunfels, TX 78132 | Oil & Gas Operator | May 2016 |
| 20526 | Newton, Richard R. | Wichita Falls, TX 76309 | Oil & Gas Operator | Nov 1996 |
| 20527 | Newton, W. F. | Conroe, TX 77305 | Oil & Gas Operator | Jun 1994 |
| 20528 | Newton, W. F. Estate Of | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 20529 | Newturn Oil Company | Houston, TX 77208 | Oil & Gas Operator | Jan 2004 |
| 20530 | Newwoods Petroleum LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2016 |
| 20531 | Nexco Inc | Oklahoma City, OK 73102-6801 | Oil & Gas Operator | Nov 2013 |
| 20532 | Nexen Oil And Gas U.S.A. Inc. | Calgary, AB T2P 5C1 | Oil & Gas Operator | Feb 2010 |
| 20533 | Nexen Petroleum U.S.A. Inc. | Houston, TX 77024 | Oil & Gas Operator | Jul 2012 |
| 20534 | Nexstreem Corporation | | Oil & Gas Operator | Dec 2020 |
| 20535 | Nextgen Petroleum LLC | Lubbock, TX 79407 | Oil Operator | Oct 2025 |
| 20536 | Nextraction Energy Us Inc | Las Vegas, NV 89169 | Oil & Gas Operator | Feb 2018 |
| 20537 | Nexus Resources Corporation | Drumright, OK 74030 | Oil & Gas Operator | Jan 2013 |
| 20538 | Ney Oil Operations | | Oil Operator | Apr 1998 |
| 20539 | Neyer Oil Inc | | Oil & Gas Operator | Nov 1997 |
| 20540 | Neyman, Robert L. & Maureen J. | Batavia, NY 14020 | Gas Operator | Dec 2024 |
| 20541 | Neymeiyer John Oil Co | | Oil Operator | Dec 1998 |
| 20542 | NFC Petroleum Corporation | Tulsa, OK 74121 | Oil & Gas Operator | Jun 1996 |
| 20543 | Nfcda Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | Oct 2025 |
| 20544 | NFR Bear Paw Basin, LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2013 |
| 20545 | NFR Energy, LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2017 |
| 20546 | NGC Energy Company | | Oil & Gas Operator | May 1989 |
| 20547 | Ngezi, LCC | Fort Worth, TX 76111 | Oil & Gas Operator | Dec 2025 |
| 20548 | NGL Processing, LLC | | Oil Operator | Jun 2000 |
| 20549 | NGM Noble LTD | Wooster, OH 44691 | Oil & Gas Operator | Dec 2024 |
| 20550 | Ngo Development Corp. | Newark, OH 43055 | Oil & Gas Operator | Dec 2024 |
| 20551 | NGX Company | Roswell, NM 88202 | Oil & Gas Operator | Jul 2008 |
| 20552 | NHH Inc | Oklahoma City, OK 73162-7418 | Oil & Gas Operator | Feb 2002 |
| 20553 | NHRG Inc | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 20554 | Nicco Operating Co. | | Oil & Gas Operator | May 1990 |
| 20555 | Nicholas Water Service, Inc. | Zenda, KS 67159 | Oil Operator | Mar 2006 |
| 20556 | Nichols Brothers | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 20557 | Nichols Fluid Service, Inc. | Liberal, KS 67901 | Oil Operator | Jun 2019 |
| 20558 | Nichols Oil & Gas Corporation | Shreveport, LA 71135 | Oil & Gas Operator | Aug 2003 |
| 20559 | Nichols Oil Co. | Holliday, TX 76366 | Oil & Gas Operator | Dec 2025 |
| 20560 | Nichols Oil Corp. | Holcomb, KS 67846 | Oil Operator | Dec 1994 |
| 20561 | Nichols Operating LLC | Fort Branch, IN 47648 | Oil & Gas Operator | Dec 2021 |
| 20562 | Nichols Water Service Inc | Forgan, OK 73938 | Oil & Gas Operator | May 2018 |
| 20563 | Nichols, Carl E. | Azle, TX 76098 | Oil & Gas Operator | Aug 2004 |
| 20564 | Nichols, Irl. A. Trust B | Duncan, OK 73534 | Oil & Gas Operator | Sep 2000 |
| 20565 | Nichols, John Wesley | Little Elm, TX 75068 | Oil & Gas Operator | Jul 2011 |
| 20566 | Nichols, Manford, A General Partnership | Sublette, KS 67877 | Gas Operator | Jun 2025 |
| 20567 | Nichols,Edwin S Explorations Inc | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 20568 | Nick Oil | Abilene, TX 79601 | Oil & Gas Operator | Dec 2025 |
| 20569 | Nickell & Son Oil & Salvage | Parker, KS 66072 | Oil Operator | Aug 2006 |
| 20570 | Nickell Drilling | | Oil Operator | Jun 2010 |
| 20571 | Nickell Oil Company | Walters, OK 73572 | Oil Operator | Apr 2018 |
| 20572 | Nickerson, Royal | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 20573 | Nicki T Oil & Gas LLC | Midland, TX 79711 | Oil Operator | Dec 2025 |
| 20574 | Nickle Audrey O | Okmulgee, OK 74447-2823 | Oil & Gas Operator | Apr 2020 |
| 20575 | Nicklos Oil & Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1986 |
| 20576 | Nicolaysen G G Jr | | Oil & Gas Operator | Dec 1995 |
| 20577 | Nicor Exploration | | Oil Operator | Jul 1993 |
| 20578 | Nicor Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 20579 | Nicor Production Company | Houston, TX 77002 | Oil & Gas Operator | May 1993 |
| 20580 | Nicor Supply Company | Golden, CO 80401 | Oil & Gas Operator | Jun 1993 |
| 20581 | Niedorf, Patrick Stephen | San Antonio, TX 78239 | Oil Operator | Jul 2001 |
| 20582 | Niefergold, Martin & Suzanne | Lawtons, NY 14091 | Gas Operator | Dec 2024 |
| 20583 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Apr 2025 |
| 20584 | Nielco, Inc. | Billings, MT 59103 | Oil & Gas Operator | Apr 2002 |
| 20585 | Nielson & Associates, Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 20586 | Nielson Capital Partners LLC | Cody, WY 82414 | Oil & Gas Operator | Dec 2014 |
| 20587 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 20588 | Nieset Lawrence & Christopher | Helena, OH 43435 | Oil Operator | Dec 2024 |
| 20589 | Night Owl Well Service | Cairo, WV 26337-0000 | Oil & Gas Operator | Dec 2021 |
| 20590 | Nightengale Henr | | Gas Operator | Nov 1996 |
| 20591 | Nighthawk Production LLC | | Oil & Gas Operator | May 2016 |
| 20592 | Nijean, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Feb 2012 |
| 20593 | Nimrod Petroleum Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2002 |
| 20594 | Nine Point Energy, LLC | | Oil & Gas Operator | Oct 2021 |
| 20595 | Nineveh Corp. | Dallas, TX 75208 | Oil & Gas Operator | Dec 2025 |
| 20596 | Nip-N-Tuck Minerals, Inc. | | Gas Operator | Feb 1988 |
| 20597 | Nippon Oil Exploration USA LTD | | Oil & Gas Operator | Dec 2010 |
| 20598 | Nisrol, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 20599 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 20600 | Nitro Energy, Inc. | | Gas Operator | Dec 2005 |