| 4001 | ARCO-VICKERS | Hardin County, TX | Oil & Gas Property | Mar 2025 |
| 4002 | ARCOL | Crook County, WY | Oil & Gas Property | Jul 2015 |
| 4003 | ARCTIC | Gonzales County, TX | Oil & Gas Property | Mar 2025 |
| 4004 | ARCTIC | Loving County, TX | Oil & Gas Property | Mar 2025 |
| 4005 | ARCTIC 150-94-36BH | McKenzie County, ND | Oil & Gas Property | Apr 2025 |
| 4006 | ARCTURUS 18 FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 4007 | ARCUS | Toole County, MT | Oil Property | Feb 2025 |
| 4008 | ARD C | Weld County, CO | Oil & Gas Property | Jan 2017 |
| 4009 | ARD STATE | Chaves County, NM | Oil Property | Nov 2018 |
| 4010 | ARDANTZ | Santa Barbara County, CA | Oil & Gas Property | Apr 2025 |
| 4011 | ARDELLA USA 21-3TFH-2B | McKenzie County, ND | Oil & Gas Property | Apr 2025 |
| 4012 | ARDELLE | Richland County, MT | Oil & Gas Property | Mar 2025 |
| 4013 | ARDELLE-STACI | Richland County, MT | Oil & Gas Property | Mar 2025 |
| 4014 | ARDEN USA 14-9TFH | McKenzie County, ND | Oil & Gas Property | Apr 2025 |
| 4015 | ARDERY 1 | Haskell County, KS | Oil Property | Jan 2025 |
| 4016 | ARDINGER | Wise County, TX | Oil & Gas Property | Mar 2025 |
| 4017 | ARDIS | Bossier Parish, LA | Oil & Gas Property | May 1990 |
| 4018 | ARDIS | De Soto Parish, LA | Oil & Gas Property | Mar 1995 |
| 4019 | ARDIS & | Caddo Parish, LA | Oil Property | Nov 2024 |
| 4020 | ARDIS C | Bossier Parish, LA | Oil & Gas Property | Jan 2025 |
| 4021 | ARDITH 4-E | Seward County, KS | Oil & Gas Property | Jan 2024 |
| 4022 | ARDITI | Dewitt County, TX | Oil & Gas Property | Feb 2025 |
| 4023 | ARDMORE | Carter County, OK | Oil & Gas Property | Feb 2025 |
| 4024 | ARDMORE AIRPORT | Carter County, OK | Oil & Gas Property | Feb 2025 |
| 4025 | ARDMORE FOUNDRY 1-7H | Carter County, OK | Oil & Gas Property | Feb 2025 |
| 4026 | ARDOUREL 33081718 | La Plata County, CO | Gas Property | Mar 2025 |
| 4027 | ARDREY | Stafford County, KS | Oil Property | Dec 2024 |
| 4028 | ARDREY | Clark County, KS | Oil Property | Jun 2024 |
| 4029 | ARE W | Summit County, UT | Oil & Gas Property | Apr 2025 |
| 4030 | ARELLANES | Santa Barbara County, CA | Oil & Gas Property | Feb 2023 |
| 4031 | ARELLANO | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 4032 | ARENA A | Ward County, TX | Oil & Gas Property | Mar 2025 |
| 4033 | ARENA ROJA | Dimmit County, TX | Oil & Gas Property | Mar 2025 |
| 4034 | ARENA ROJA 15 10 FEDERAL UNIT | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 4035 | ARENA ROJA 28 33 FEDERAL COM | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 4036 | ARENA ROJA FEDERAL UNIT | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 4037 | ARENA, ANNETTE & G J | Knox County, KY | Gas Property | Dec 2022 |
| 4038 | ARENOSO 22 FEDERAL | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 4039 | ARENS | Weld County, CO | Oil & Gas Property | Feb 2025 |
| 4040 | ARENSMAN | Barton County, KS | Oil Property | Feb 2025 |
| 4041 | ARENSMAN | Rice County, KS | Oil Property | Dec 2024 |
| 4042 | ARENT | Ouachita Parish, LA | Gas Property | Nov 2024 |
| 4043 | AREQUIPA | Kern County, CA | Oil Property | Jul 1986 |
| 4044 | ARES 27-26 UNIT | Martin County, TX | Oil & Gas Property | Mar 2025 |
| 4045 | ARES 4 STATE | Lea County, NM | Oil & Gas Property | Mar 2025 |
| 4046 | ARES STATE | Lea County, NM | Oil & Gas Property | Apr 1999 |
| 4047 | ARESTIDE BROUSSARD | Vermilion Parish, LA | Oil & Gas Property | Oct 1997 |
| 4048 | ARFEDERAL 1591 | Carbon County, WY | Gas Property | Apr 2019 |
| 4049 | ARFEDERAL 1791 | Carbon County, WY | Gas Property | Mar 2025 |
| 4050 | ARFEE 1791 | Carbon County, WY | Gas Property | Mar 2025 |
| 4051 | ARGABRIGHT 1-4 | Rawlins County, KS | Oil Property | Feb 2025 |
| 4052 | ARGENT BARKSDALE 29-17 | Howard County, TX | Oil & Gas Property | Mar 2025 |
| 4053 | ARGENTA | La Plata County, CO | Gas Property | Mar 2025 |
| 4054 | ARGENTA 3 | La Plata County, CO | Gas Property | Mar 2025 |
| 4055 | ARGENTINE | Reeves County, TX | Oil & Gas Property | Mar 2025 |
| 4056 | ARGIE VAUGHN | Pittsburg County, OK | Gas Property | Jan 2025 |
| 4057 | ARGILLITE 147-93-08D-05H | Dunn County, ND | Oil & Gas Property | Apr 2025 |
| 4058 | ARGO | Lea County, NM | Oil & Gas Property | Feb 2025 |
| 4059 | ARGO | Andrews County, TX | Oil & Gas Property | Mar 2025 |
| 4060 | ARGO | Hughes County, OK | Gas Property | Oct 2018 |
| 4061 | ARGO | Andrews County, TX | Oil & Gas Property | Mar 2025 |
| 4062 | ARGO | Niobrara County, WY | Oil & Gas Property | Apr 2025 |
| 4063 | ARGO EVELEIGH | Barton County, KS | Oil Property | Feb 2025 |
| 4064 | ARGO KNIGHT | Andrews County, TX | Oil & Gas Property | Mar 2025 |
| 4065 | ARGO-MOSS | Ector County, TX | Oil & Gas Property | Feb 2025 |
| 4066 | ARGO-VEST | Winkler County, TX | Oil & Gas Property | Mar 2025 |
| 4067 | ARGONAUT | Noble County, OK | Oil & Gas Property | Feb 2025 |
| 4068 | ARGOS FE | Converse County, WY | Oil & Gas Property | Mar 2025 |
| 4069 | ARGUS ENERGY | Lincoln County, WV | Oil & Gas Property | Dec 2021 |
| 4070 | ARHOPULOS | Brazos County, TX | Oil & Gas Property | Mar 2025 |
| 4071 | ARIA | Morris County, TX | Oil & Gas Property | Mar 2025 |
| 4072 | ARIANA | Comanche County, KS | Oil & Gas Property | Feb 2025 |
| 4073 | ARICK | Noble County, OH | Oil & Gas Property | Mar 2025 |
| 4074 | ARICK | Midland County, TX | Oil & Gas Property | Mar 2025 |
| 4075 | ARICK-HOOPER UNIT | Midland County, TX | Oil & Gas Property | Mar 2025 |
| 4076 | ARICK-S | Midland County, TX | Oil & Gas Property | Mar 2025 |
| 4077 | ARIEL | Hughes County, OK | Oil & Gas Property | Feb 2025 |
| 4078 | ARIEL J 7 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 4079 | ARIES | Converse County, WY | Oil & Gas Property | Apr 2025 |
| 4080 | ARIES 19 IL FEDERAL COM | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 4081 | ARIES 20 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 4082 | ARIES 20 MP FEDERAL COM | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 4083 | ARIKARA | McKenzie County, ND | Oil & Gas Property | Apr 2025 |
| 4084 | ARIKARA 15-22H | Mountrail County, ND | Oil & Gas Property | Apr 2025 |
| 4085 | ARIO CORP | Knott County, KY | Oil & Gas Property | Dec 2023 |
| 4086 | ARISTIDES | Culberson County, TX | Oil & Gas Property | Mar 2025 |
| 4087 | ARISTOCRAT | Weld County, CO | Oil & Gas Property | Mar 2025 |
| 4088 | ARITHSON | Bowman County, ND | Oil & Gas Property | Apr 2025 |
| 4089 | ARIZOLA PETROLEUM CO | Lasalle Parish, LA | Oil Property | Nov 2024 |
| 4090 | ARIZOLA-LA PETRO AS | Lasalle Parish, LA | Oil Property | Jan 2025 |
| 4091 | ARIZONA JICARILLA | Rio Arriba County, NM | Oil & Gas Property | Mar 2025 |
| 4092 | ARIZONA JICARILLA B | Rio Arriba County, NM | Oil & Gas Property | Mar 2025 |
| 4093 | ARK 21-15 | Williams County, ND | Oil & Gas Property | Apr 2025 |
| 4094 | ARK 36 STATE | Eddy County, NM | Oil & Gas Property | Mar 2025 |
| 4095 | ARK FUE | Caddo Parish, LA | Oil & Gas Property | Jan 2025 |
| 4096 | ARK FUEL OIL-ROBINSON FEE | Caddo Parish, LA | Oil & Gas Property | Jan 2025 |
| 4097 | ARK LAND | Kanawha County, WV | Oil & Gas Property | Dec 2021 |
| 4098 | ARK LAND 02-114372 | Campbell County, WY | Oil & Gas Property | Apr 2025 |
| 4099 | ARK LAND AL | Kanawha County, WV | Oil & Gas Property | Dec 2021 |
| 4100 | ARK LAND CO | Harlan County, KY | Oil & Gas Property | Dec 2023 |