| 12901 | Held By Producti | | Oil & Gas Operator | Feb 1995 |
| 12902 | Held By Production, Inc. | Houston, TX 77251 | Oil & Gas Operator | May 1996 |
| 12903 | Helemrich & Payne Inc | Iraan, TX 79744 | Oil & Gas Operator | Sep 2002 |
| 12904 | Helena Production Corp | | Oil & Gas Operator | Dec 1991 |
| 12905 | Helena Resources Inc | Lakewood, CO 80215 | Oil & Gas Operator | Jun 2025 |
| 12906 | Helena Resources LLC | Helena, OK 73741 | Oil & Gas Operator | Apr 2025 |
| 12907 | Helios Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2025 |
| 12908 | Helis Oil & Gas Company LLC Estate | New Orleans, LA 70130 | Oil & Gas Operator | Jul 2022 |
| 12909 | Helis Oil & Gas Company, L.L.C. | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2023 |
| 12910 | Helis, William G. Co., LLC, The | New Orleans, LA 70130 | Oil & Gas Operator | Oct 2003 |
| 12911 | Helis,WM.G.,Est., A Partnership | New Orleans, LA 70130 | Oil & Gas Operator | Aug 2003 |
| 12912 | Helke Exploration Company | Oklahoma City, OK 73112-7201 | Oil & Gas Operator | Feb 2000 |
| 12913 | Hell Creek Crude LLC | Winnett, MT 59087 | Oil Operator | May 2025 |
| 12914 | Hellar Drilling | | Oil & Gas Operator | Jan 1994 |
| 12915 | Hellar Drilling Company, Inc. | Wichita, KS 67208 | Oil & Gas Operator | Jan 2009 |
| 12916 | Hellard Elmer J | Sapulpa, OK 74066 | Oil & Gas Operator | May 2025 |
| 12917 | Heller, Phillip & Charlene | Columbia, MO 65201 | Oil & Gas Operator | Mar 2025 |
| 12918 | Hellifino Operating, LLC | San Antonio, TX 78212 | Oil Operator | Jul 2025 |
| 12919 | Hellman Properties LLC | | Oil & Gas Operator | May 2025 |
| 12920 | Hellums, Harold | Cedar Creek, TX 78612 | Oil & Gas Operator | Mar 2008 |
| 12921 | Helm Energy Company | Tulsa, OK 74133 | Oil Operator | Mar 2025 |
| 12922 | Helmcamp, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2002 |
| 12923 | Helmco LTD | Kiefer, OK 74041-0397 | Oil & Gas Operator | Jan 2007 |
| 12924 | Helmco Production Company | Pawhuska, OK 74056 | Oil Operator | Aug 2000 |
| 12925 | Helmer Oil Corporation | | Oil & Gas Operator | Apr 2025 |
| 12926 | Helmer, Bonnie J | | Oil Operator | Apr 2025 |
| 12927 | Helmerich & Payn | | Oil & Gas Operator | Aug 1995 |
| 12928 | Helmerich & Payne, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Mar 2025 |
| 12929 | Helmhold Oil Incorporated | Wellsville, NY 14895 | Oil Operator | Dec 2024 |
| 12930 | Helms Oil | Brinkhaven, OH 43006 | Oil Operator | Dec 2018 |
| 12931 | Helms Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Jul 2025 |
| 12932 | Helo Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2001 |
| 12933 | Helsel, Allan J | South Haven, KS 67140 | Oil Operator | Feb 2025 |
| 12934 | Helton Oil Company | Edmond, OK 73083-7283 | Oil & Gas Operator | Aug 2016 |
| 12935 | Helton Petroleum | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 12936 | Helton, Pat A. & Alberta | Allison, TX 79003 | Oil & Gas Operator | Jul 2025 |
| 12937 | Hembree Alva | Oklahoma City, OK 73151-9145 | Oil & Gas Operator | Jun 2016 |
| 12938 | Hembree Brit W | Shawnee, OK 74802-1725 | Oil & Gas Operator | Mar 2025 |
| 12939 | Hembree Oil Production, LLC | Great Bend, KS 67530 | Oil Operator | Mar 2025 |
| 12940 | Hembree Oilfield Services, LLC | Great Bend, KS 67530 | Oil Operator | Feb 2025 |
| 12941 | Hembree Robert F | | Oil Operator | Dec 2009 |
| 12942 | Hemco Development, LLC | Dallas, TX 75201 | Oil & Gas Operator | Nov 2020 |
| 12943 | Hemco Production, L. L. C. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2016 |
| 12944 | Hemstead Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2001 |
| 12945 | Hemus, Inc. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 1994 |
| 12946 | Henderson & Erickson, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2025 |
| 12947 | Henderson Don Inc | Oklahoma City, OK 73134-1753 | Oil & Gas Operator | Aug 2013 |
| 12948 | Henderson Exploration Company | Tulsa, OK 74120 | Oil & Gas Operator | May 2013 |
| 12949 | Henderson Fred J | Okmulgee, OK 74447 | Oil & Gas Operator | May 2025 |
| 12950 | Henderson Natural Res, L.L.C. | Crozet, VA 22932 | Oil & Gas Operator | Jul 2025 |
| 12951 | Henderson Oil & Gas | | Oil Operator | Sep 1990 |
| 12952 | Henderson Pet Corp Of Delaware | | Oil & Gas Operator | Oct 2019 |
| 12953 | Henderson Petroleum Corp | San Angelo, TX 76906 | Oil & Gas Operator | Jul 2013 |
| 12954 | Henderson, Bryan, Co. | Dallas, TX 75225 | Oil & Gas Operator | Jul 2025 |
| 12955 | Henderson, Chris | Pawhuska, OK 74056 | Oil Operator | Dec 2009 |
| 12956 | Henderson, David Malcolm & Georgina Hewlett | Hancock, MD 21750 | Oil Operator | Dec 2023 |
| 12957 | Henderson, Peter Oil Co. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2020 |
| 12958 | Henderson, Sam F. | Odessa, TX 79760 | Oil & Gas Operator | Nov 2002 |
| 12959 | Henderson, Sam W. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2019 |
| 12960 | Hendon WM E. Jr. Rev LVNG Trust | Everett, WA 98208 | Oil & Gas Operator | Jul 2025 |
| 12961 | Hendrickson Lester | Delaware, OK 74027-9715 | Oil Operator | Mar 2015 |
| 12962 | Hendrickson W R | Beggs, OK 74421-2936 | Oil & Gas Operator | Jun 2023 |
| 12963 | Hendrix, John H. Corporation | Midland, TX 79705 | Oil & Gas Operator | Sep 2018 |
| 12964 | Hendry Energy Services | | Oil Operator | Dec 2024 |
| 12965 | Henergy Oil & Gas LLC | | Oil Operator | Jan 2025 |
| 12966 | Henley Operating | Nocona, TX 76255 | Oil & Gas Operator | Jul 2025 |
| 12967 | Henley, VIola F | | Oil Operator | Apr 2025 |
| 12968 | Hennan Resources, Inc. | Great Neck, NY 11021 | Gas Operator | Nov 1997 |
| 12969 | Hennessey Oil & Gas LLC | Hennessey, OK 73742-0212 | Oil & Gas Operator | Sep 2024 |
| 12970 | Hennessy Oil Com | | Oil Operator | Mar 1991 |
| 12971 | Hennig Production Co., Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jul 2025 |
| 12972 | Henrich, Adam Gabriel | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 12973 | Henrich, John W. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 12974 | Henry And Jane Fong | | Oil Operator | Dec 1989 |
| 12975 | Henry Billy Or Connie | Okemah, OK 74859-6075 | Oil & Gas Operator | Jul 2021 |
| 12976 | Henry Gungoll Operating Inc | Enid, OK 73703 | Oil & Gas Operator | May 2025 |
| 12977 | Henry Oil & Gas Inc | Oklahoma City, OK 73127 | Oil & Gas Operator | Jul 2009 |
| 12978 | Henry Patrick K | Chicora, PA 16025-4502 | Oil & Gas Operator | Dec 2024 |
| 12979 | Henry Paul Petroleum, LLC | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 12980 | Henry Petroleum Corp. | Midland, TX 79703 | Oil & Gas Operator | Mar 2001 |
| 12981 | Henry Petroleum Inc | Oklahoma City, OK 73162-1757 | Oil & Gas Operator | Sep 2019 |
| 12982 | Henry Petroleum LLC | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2025 |
| 12983 | Henry Petroleum LP | Midland, TX 79701 | Oil & Gas Operator | Dec 2008 |
| 12984 | Henry Petroleum Of Oklahoma LP | Midland, TX 79703-5000 | Oil & Gas Operator | Feb 2017 |
| 12985 | Henry Production Company, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Oct 2019 |
| 12986 | Henry Rennick | | Oil Operator | Apr 2025 |
| 12987 | Henry Resources LLC | Midland, TX 79703 | Oil & Gas Operator | Jul 2025 |
| 12988 | Henry Sappington Machine & Tool Dba Henry Sappingt | | Oil Operator | Oct 2017 |
| 12989 | Henry W. Agle And Sons, Inc. | Eden, NY 14057 | Gas Operator | Dec 2024 |
| 12990 | Henry Wat Oil Company | Tulsa, OK 74101 | Oil Operator | Jan 2014 |
| 12991 | Henry, J.R. Inc | Brenham, TX 77833 | Oil & Gas Operator | Jul 2025 |
| 12992 | Henry, John Petroleum | Dallas, TX 75225 | Oil & Gas Operator | Dec 2001 |
| 12993 | Henscheid, Rufus | Muenster, TX 76252 | Oil Operator | Jan 2020 |
| 12994 | Hensley Oil Company LLC | Arkansas City, KS 67005 | Oil Operator | Mar 2025 |
| 12995 | Hensley, Cloide J. & Hazel M. | Arkansas City, KS 67005 | Oil Operator | Sep 2001 |
| 12996 | Henson Doyle | Okmulgee, OK 74447-4841 | Oil & Gas Operator | Jun 2020 |
| 12997 | Henson Exploration, L.P. | Abilene, TX 79608 | Oil & Gas Operator | Jul 2025 |
| 12998 | Henson Terry Dba Daycon Exploration | Tulsa, OK 74137-3546 | Oil & Gas Operator | Apr 2025 |
| 12999 | Hep Oil Company LTD | Gainesville, TX 76240 | Oil & Gas Operator | Mar 2012 |
| 13000 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |