| 27001 | Smackco, LTD. | | Oil & Gas Operator | Oct 2002 |
| 27002 | Smackover Drilling Company Inc | Shreveport, LA 71104 | Oil & Gas Operator | Dec 2024 |
| 27003 | Smackover Producing Co | | Oil & Gas Operator | Dec 2024 |
| 27004 | Smackover Shell LTD. Partnership | Houston, TX 77001 | Gas Operator | Apr 2000 |
| 27005 | Smail Denny Lee | Harvey, LA 70058 | Oil & Gas Operator | Dec 2024 |
| 27006 | Smail, James R. | Big Prairie, OH 44611 | Oil & Gas Operator | Dec 1998 |
| 27007 | Smal Energy Corp | Tyler, TX 75710 | Oil & Gas Operator | Oct 1995 |
| 27008 | Small, Louis E. | Orchard Park, NY 14127 | Gas Operator | Dec 2024 |
| 27009 | Small, R.P. Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2025 |
| 27010 | Smalley, Bill | Albany, TX 76430 | Oil & Gas Operator | Jul 2001 |
| 27011 | Smart Jr T J | Ryan, OK 73565 | Oil Operator | Sep 1994 |
| 27012 | Smart Service & Equipment LLC | Muskogee, OK 74401-5262 | Oil Operator | Aug 2013 |
| 27013 | SMC Oil & Gas, Inc. | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 27014 | Sme Well SVC Inc | Herman, PA 16039-0156 | Oil & Gas Operator | Dec 2024 |
| 27015 | Smiley Drilling Co | Oklahoma City, OK 73156-0773 | Oil & Gas Operator | Apr 1999 |
| 27016 | Smith & Marrs Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2021 |
| 27017 | Smith & Smith Petroleum Corp | | Oil & Gas Operator | Apr 2025 |
| 27018 | Smith & Spragins | Wichita Falls, TX 76301 | Oil & Gas Operator | Jul 1995 |
| 27019 | Smith Al | Duncan, OK 73534-0037 | Oil Operator | Dec 1998 |
| 27020 | Smith Alfred Dba A-S Oil | Walters, OK 73572 | Oil Operator | May 2025 |
| 27021 | Smith Bart Oil & Gas Expl Inc | Council Hill, OK 74428-9603 | Oil & Gas Operator | Apr 2015 |
| 27022 | Smith Bob W | Ardmore, OK 73403-5214 | Oil & Gas Operator | Sep 2014 |
| 27023 | Smith Bradley D & Paul C | Pawhuska, OK 74056 | Oil Operator | Apr 2025 |
| 27024 | Smith Brothers Enterprises | Ardmore, OK 73402 | Oil Operator | Jul 1998 |
| 27025 | Smith Brothers Oil & Gas, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |
| 27026 | Smith C W & Associates Inc | Oklahoma City, OK 73178-0105 | Oil & Gas Operator | Aug 2013 |
| 27027 | Smith C/Dba Sandy Supply | North FT Myers, FL 33903 | Oil & Gas Operator | Dec 1988 |
| 27028 | Smith Cheryl A | Copan, OK 74022 | Oil Operator | Jul 2024 |
| 27029 | Smith Claude W | Henryetta, OK 74437-7553 | Oil Operator | May 2008 |
| 27030 | Smith Conley P Operating Co | Eglewood, CO 80112-3640 | Oil & Gas Operator | Jun 2000 |
| 27031 | Smith Connie M & Sheryle | Chelsea, OK 74016-1959 | Oil Operator | Feb 2017 |
| 27032 | Smith Doug | Tulsa, OK 74107 | Oil & Gas Operator | Feb 2016 |
| 27033 | Smith Edward F | Avant, OK 74001-0024 | Oil & Gas Operator | Nov 2014 |
| 27034 | Smith Energy 1986a Partnership | Alvin, TX 77511 | Oil & Gas Operator | Feb 2010 |
| 27035 | Smith Energy Company LLC | Purcell, OK 73080-4772 | Oil & Gas Operator | May 2015 |
| 27036 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
| 27037 | Smith Energy Limited Partnership 1988 | | Oil & Gas Operator | May 2012 |
| 27038 | Smith Energy LLC | | Oil & Gas Operator | Jun 2025 |
| 27039 | Smith Energy Operating Company | Lubbock, TX 79423 | Oil & Gas Operator | Jul 2025 |
| 27040 | Smith Family LTD Partnership | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2004 |
| 27041 | Smith Harmon K | Wewoka, OK 74884 | Oil & Gas Operator | Jan 2013 |
| 27042 | Smith J S Production | Seminole, OK 74868 | Oil & Gas Operator | Apr 2025 |
| 27043 | Smith Jack Boyd | Elkhart, IN 46515-1968 | Oil & Gas Operator | Oct 2011 |
| 27044 | Smith Joyce | Okmulgee, OK 74447-6074 | Oil Operator | Mar 2025 |
| 27045 | Smith Kevin | Thermopolis, WY 82443 | Oil Operator | Sep 2024 |
| 27046 | Smith Land Surveying, Inc. Dba SLS Land & Energy Development | | Gas Operator | Dec 2021 |
| 27047 | Smith Management Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 1992 |
| 27048 | Smith Manus L MFG Inc | Oklahoma City, OK 73147 | Oil & Gas Operator | Nov 1998 |
| 27049 | Smith Max Dean | Wewoka, OK 74884 | Oil & Gas Operator | Dec 2024 |
| 27050 | Smith Mike D | Stillwater, OK 74074 | Oil & Gas Operator | Apr 2015 |
| 27051 | Smith Oil & Gas Co., Inc. | Wichita Falls, TX 76310 | Oil Operator | Dec 2010 |
| 27052 | Smith Oil & Gas LLC | Livermore, CO 80536 | Gas Operator | Mar 2025 |
| 27053 | Smith Oil Compan | | Oil Operator | Sep 1994 |
| 27054 | Smith Oil Company | Smackover, AR 71762 | Oil Operator | Dec 2024 |
| 27055 | Smith Oil Operations | | Oil & Gas Operator | Mar 2025 |
| 27056 | Smith Oil Properties Inc | | Oil & Gas Operator | Nov 2022 |
| 27057 | Smith Operating & Management Co. | Shreveport, LA 71161 | Oil & Gas Operator | Feb 2005 |
| 27058 | Smith Operating And MGMT Co. | Shreveport, LA 71161 | Oil & Gas Operator | Jun 2023 |
| 27059 | Smith Operating-Germany Oil | | Oil & Gas Operator | Dec 1995 |
| 27060 | Smith Patrica\Judith Miller | Collinsville, OK 74021-6307 | Oil Operator | Jun 2010 |
| 27061 | Smith Petroleum Company | Spring, TX 77389 | Oil & Gas Operator | Jul 2025 |
| 27062 | Smith Petroleum LLC | Barnsdall, OK 74002-0134 | Oil Operator | Apr 2025 |
| 27063 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Jul 2025 |
| 27064 | Smith Production Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 27065 | Smith Production Inc. | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 27066 | Smith Ranch Company | Sharon Springs, KS 67758 | Gas Operator | May 2002 |
| 27067 | Smith Red Plains Production | | Oil & Gas Operator | Dec 2024 |
| 27068 | Smith Red Plains Production LLC | | Oil & Gas Operator | Jun 2025 |
| 27069 | Smith Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Jul 2025 |
| 27070 | Smith Resources, L.L.C. | Marshall, TX 75671 | Oil & Gas Operator | Jul 2025 |
| 27071 | Smith Richard F | | Oil Operator | Jun 1995 |
| 27072 | Smith Richard L | Catoosa, OK 74015 | Oil & Gas Operator | Dec 2019 |
| 27073 | Smith Ronald Dba Chipco | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2024 |
| 27074 | Smith Shirley C | Claremore, OK 74017-0060 | Oil & Gas Operator | Mar 2015 |
| 27075 | Smith T W | Jeromesville, OH 44840 | Oil Operator | Dec 2016 |
| 27076 | Smith Terry | Wewoka, OK 74884 | Oil & Gas Operator | Mar 2015 |
| 27077 | Smith Todd W Oil | | Oil Operator | Jan 1994 |
| 27078 | Smith Vacuum Service | Snyder, TX 79550 | Oil & Gas Operator | Jul 2025 |
| 27079 | Smith Vernon C | Tulsa, OK 74104 | Oil & Gas Operator | Jan 2025 |
| 27080 | Smith VIcki L Palmer | Lawton, OK 73505-1701 | Oil & Gas Operator | Dec 2014 |
| 27081 | Smith, Alan S | | Gas Operator | Dec 2022 |
| 27082 | Smith, Albert E. Jr. & Allan E. | Van Etten, NY 14889 | Gas Operator | Dec 2024 |
| 27083 | Smith, Carl E Petroleum Inc | Sandyville, WV 25275-0000 | Oil & Gas Operator | Dec 2021 |
| 27084 | Smith, Clyde H. Oper. Co., Inc. | | Oil & Gas Operator | Jun 1994 |
| 27085 | Smith, Darrin R | Wilson, KS 67490 | Oil Operator | Feb 2025 |
| 27086 | Smith, David | Wichita Falls, TX 76310 | Oil Operator | Jul 2025 |
| 27087 | Smith, Diman T. And Louann | Sinclairville, NY 14782 | Gas Operator | Dec 2024 |
| 27088 | Smith, Donald B | | Oil Operator | Dec 2020 |
| 27089 | Smith, Donald B (Deceased) | Calhoun, KY 42327 | Oil Operator | Dec 2023 |
| 27090 | Smith, Donnie D. | Coleman, TX 76834 | Gas Operator | Oct 2017 |
| 27091 | Smith, E. J. | Fort Worth, TX 76137 | Oil & Gas Operator | Jul 2025 |
| 27092 | Smith, E.N. III Energy Corp. | Marshall, TX 75671 | Oil & Gas Operator | Sep 2006 |
| 27093 | Smith, Edward J. | Clifton, NJ 07013 | Oil & Gas Operator | Dec 1995 |
| 27094 | Smith, Frederick H. | Auburn, NY 13021 | Gas Operator | Dec 2024 |
| 27095 | Smith, Gordon R. | Madison, KS 66860 | Oil Operator | Nov 1998 |
| 27096 | Smith, J.V. Oil Company | Dallas, TX 75248 | Gas Operator | Jul 2025 |
| 27097 | Smith, James E DRLG Co | | Oil Operator | Dec 2010 |
| 27098 | Smith, Joe H. | Argyle, TX 76226 | Oil & Gas Operator | Nov 1998 |
| 27099 | Smith, Joe T., Inc. | Hawley, TX 79525 | Oil & Gas Operator | Jul 2025 |
| 27100 | Smith, John A. | Midland, TX 79702 | Oil & Gas Operator | Jul 2025 |