| 20101 | Nichols,Edwin S Explorations Inc | Graham, TX 76450 | Oil & Gas Operator | Jul 2026 |
| 20102 | Nick Oil | Abilene, TX 79601 | Oil & Gas Operator | Jul 2026 |
| 20103 | Nickell & Son Oil & Salvage | Parker, KS 66072 | Oil Operator | Aug 2006 |
| 20104 | Nickell Drilling | | Oil Operator | Jun 2010 |
| 20105 | Nickell Oil Company | Walters, OK 73572 | Oil Operator | Apr 2018 |
| 20106 | Nickerson, Royal | Clymer, NY 14724 | Gas Operator | Dec 2025 |
| 20107 | Nicki T Oil & Gas LLC | Midland, TX 79711 | Oil Operator | Jul 2026 |
| 20108 | Nickle Audrey O | Okmulgee, OK 74447-2823 | Oil & Gas Operator | Apr 2020 |
| 20109 | Nicklos Oil & Gas Co. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1986 |
| 20110 | Nicolaysen G G Jr | | Oil & Gas Operator | Dec 1995 |
| 20111 | Nicor Exploration | | Oil Operator | Jul 1993 |
| 20112 | Nicor Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 20113 | Nicor Production Company | Houston, TX 77002 | Oil & Gas Operator | May 1993 |
| 20114 | Nicor Supply Company | Golden, CO 80401 | Oil & Gas Operator | Jun 1993 |
| 20115 | Niedorf, Patrick Stephen | San Antonio, TX 78239 | Oil Operator | Jul 2001 |
| 20116 | Niefergold, Martin & Suzanne | Lawtons, NY 14091 | Gas Operator | Dec 2025 |
| 20117 | Niehage Oil Company, LLC | McPherson, KS 67460 | Oil Operator | Mar 2026 |
| 20118 | Nielco, Inc. | Billings, MT 59103 | Oil & Gas Operator | Apr 2002 |
| 20119 | Nielson & Associates, Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 20120 | Nielson Capital Partners LLC | Cody, WY 82414 | Oil & Gas Operator | Dec 2014 |
| 20121 | Nielson Enterpri | | Oil & Gas Operator | Sep 1987 |
| 20122 | Nieset Lawrence & Christopher | Helena, OH 43435 | Oil Operator | Dec 2025 |
| 20123 | Night Owl Well Service | Cairo, WV 26337-0000 | Oil & Gas Operator | Dec 2021 |
| 20124 | Nightengale Henr | | Gas Operator | Nov 1996 |
| 20125 | Nighthawk Production LLC | | Oil & Gas Operator | May 2016 |
| 20126 | Nijean, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Feb 2012 |
| 20127 | Nimrod Petroleum Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2002 |
| 20128 | Nine Point Energy, LLC | | Oil & Gas Operator | Oct 2021 |
| 20129 | Nineveh Corp. | Dallas, TX 75208 | Oil & Gas Operator | Jul 2026 |
| 20130 | Nip-N-Tuck Minerals, Inc. | | Gas Operator | Feb 1988 |
| 20131 | Nippon Oil Exploration USA LTD | | Oil & Gas Operator | Dec 2010 |
| 20132 | Nisrol, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 20133 | Nitcher, Benton L. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 1995 |
| 20134 | Nitro Energy, Inc. | | Gas Operator | Dec 2005 |
| 20135 | Nitro Oil & Gas, LLC | Cuero, TX 77954 | Oil & Gas Operator | Jul 2026 |
| 20136 | Nitro Petroleum Inc | Phoenix, AZ 85016-4599 | Oil & Gas Operator | May 2020 |
| 20137 | Nitro-Lift/Oklahoma Manufacturing LLC | Mill Creek, OK 74856 | Oil Operator | Jul 2026 |
| 20138 | Nitschke, Dan E. | Henrietta, TX 76365 | Oil & Gas Operator | Jul 2026 |
| 20139 | Nivens Productions LLC | Coyle, OK 73027-9785 | Oil & Gas Operator | Aug 2024 |
| 20140 | Nix, Tommy | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 20141 | Nixon Properties Inc | Tulsa, OK 74104 | Oil & Gas Operator | Aug 2023 |
| 20142 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 20143 | Nizen, Stanley | FT Stockton, TX 79735 | Oil & Gas Operator | May 2002 |
| 20144 | Nja Operating LLC | Perryton, TX 79070 | Oil & Gas Operator | Jul 2026 |
| 20145 | Nject Disposal LLC | Houston, TX 77027 | Oil Operator | Mar 2017 |
| 20146 | NJL Oil Co. | Electra, TX 76360 | Oil & Gas Operator | Feb 2007 |
| 20147 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |
| 20148 | NKC Energy, LLC | Bruceville, TX 76630 | Oil Operator | Jul 2026 |
| 20149 | NLC Newstead Holdings LLC | Akron, NY 14001 | Gas Operator | Dec 2025 |
| 20150 | NM&O Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 20151 | NMR Energy LLC | Houston, TX 77063 | Oil & Gas Operator | Jul 2026 |
| 20152 | NMT Oil Company Inc. | | Oil & Gas Operator | May 2026 |
| 20153 | Nnogc Exploration & Production, LLC | Window Rock, AZ 86515 | Oil & Gas Operator | May 2026 |
| 20154 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 |
| 20155 | Noarko Resources | | Oil & Gas Operator | Mar 1990 |
| 20156 | Nobbs, Gary H. And Bosinski, Kathy | Eden, NY 14057 | Gas Operator | Dec 2025 |
| 20157 | Nobel Petroleum USA Inc. | League City, TX 77573 | Oil Operator | Jul 2026 |
| 20158 | Noble & Cantrell Expl. Co., Inc. | Winnsboro, TX 75494 | Oil & Gas Operator | Aug 2006 |
| 20159 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Jul 2026 |
| 20160 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Jul 2026 |
| 20161 | Noble Exploration, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Aug 2003 |
| 20162 | Noble Gas Co | Wooster, OH 44691 | Oil & Gas Operator | Dec 1997 |
| 20163 | Noble Oil Corp | Columbus, OH 43229 | Oil & Gas Operator | Dec 1996 |
| 20164 | Noble Operating Company Inc | Garden City, KS 67846 | Oil & Gas Operator | Sep 2014 |
| 20165 | Noble Operating, LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Sep 2013 |
| 20166 | Noble Petroleum LLC | Lower Salem, OH 45745-9648 | Oil & Gas Operator | Dec 2025 |
| 20167 | Noble Petroleum, Inc. | Wichita, KS 67205 | Oil Operator | Sep 2013 |
| 20168 | Noble Producing Company Inc. | Dallas, TX 75244 | Oil & Gas Operator | Mar 1996 |
| 20169 | Noble Resources Inc | Mannford, OK 74044 | Oil & Gas Operator | May 2026 |
| 20170 | Noble, Alton L | Westfield, NY 14787 | Gas Operator | Dec 2025 |
| 20171 | Nobleson Operating, Inc. | Dallas, TX 75244 | Oil & Gas Operator | Jun 1996 |
| 20172 | Noc | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2020 |
| 20173 | Noco Investment Company Inc | Tulsa, OK 74159-0470 | Oil & Gas Operator | Mar 2005 |
| 20174 | Nodding Donkey Production | Pampa, TX 79065 | Oil & Gas Operator | Jul 2026 |
| 20175 | Nodding Donkey Resources LLC | Oklahoma City, OK 73112 | Oil Operator | Apr 2026 |
| 20176 | Noe And Woods, Et Al | | Gas Operator | Jan 2008 |
| 20177 | Noe, T. C. Oil Acct. | Selman City, TX 75689 | Oil & Gas Operator | May 1996 |
| 20178 | Noel Operating, Inc. | Huntsville, TX 77340 | Oil & Gas Operator | Oct 2000 |
| 20179 | Noex, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Apr 1998 |
| 20180 | Nog Production & Operating LLC | Goliad, TX 77963 | Oil & Gas Operator | Jul 2026 |
| 20181 | Nogp Operating Company Inc | Tomball, TX 77377 | Oil & Gas Operator | May 2026 |
| 20182 | Noir-Blanc | Russell, KS 67665 | Oil Operator | May 1992 |
| 20183 | Nokota Energy Corporation | Bakersfield, CA 93313 | Oil Operator | Jul 2026 |
| 20184 | Nokusu, LTD. | Dallas, TX 75231 | Oil & Gas Operator | Sep 2008 |
| 20185 | Nolen Oil & Gas | Beeville, TX 78102 | Oil & Gas Operator | Jul 2026 |
| 20186 | Nolen, Charles R. | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2006 |
| 20187 | Nolin Rural Electric Coop | Elizabethtown, KY 42701 | Gas Operator | Dec 2024 |
| 20188 | Nolt, Leonard R. And Marian M. Nolt | Dundee, NY 14837 | Gas Operator | Dec 2025 |
| 20189 | Nolte, Mike E. | Longview, TX 75606 | Oil & Gas Operator | Jun 1995 |
| 20190 | Nolte, Mike E., Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2006 |
| 20191 | Nolteco, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2026 |
| 20192 | Nomeco Oil & Gas Co. | Jackson, MI 49204 | Oil & Gas Operator | Dec 1994 |
| 20193 | Nomoc Oil Company Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | May 2006 |
| 20194 | Nondorf Oil & Ga | | Oil Operator | Dec 1986 |
| 20195 | Nondorf Oil & Gas Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2008 |
| 20196 | Nonsuch Natural Gas Inc | Naples, FL 34108 | Oil & Gas Operator | Jun 2026 |
| 20197 | Noonday Exploration, LLC | Tyler, TX 75711 | Oil & Gas Operator | Apr 2024 |
| 20198 | Nooner Cynthia | Ratliff City, OK 73481 | Oil Operator | Mar 2026 |
| 20199 | Nor East Investment Corporation | N Richlnd HLS, TX 76182 | Oil Operator | Jul 2026 |
| 20200 | Nor-Am Exploration | | Oil Operator | Jun 1981 |