| 4001 | ARCO-RICHARDSON 5 | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 4002 | ARCO-SELBY | Nowata County, OK | Oil Property | Jul 2008 |
| 4003 | ARCO-STATE 16 | Yuma County, CO | Gas Property | May 2026 |
| 4004 | ARCO-THOMERSON 5 | Schleicher County, TX | Oil & Gas Property | Jun 2026 |
| 4005 | ARCO-VICKERS | Hardin County, TX | Oil & Gas Property | Jun 2026 |
| 4006 | ARCO/BLACK STONE A-233 UNIT 1 | Jasper County, TX | Oil & Gas Property | Jun 2026 |
| 4007 | ARCOL | Crook County, WY | Oil & Gas Property | Jul 2015 |
| 4008 | ARCTIC | Gonzales County, TX | Oil & Gas Property | Jun 2026 |
| 4009 | ARCTIC | Loving County, TX | Oil & Gas Property | Jun 2026 |
| 4010 | ARCTIC 150-94-36BH | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 4011 | ARCTURUS 18 FEDERAL | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 4012 | ARCUS | Toole County, MT | Oil Property | Jun 2026 |
| 4013 | ARD #1 | Garvin County, OK | Oil & Gas Property | Jun 2026 |
| 4014 | ARD C | Weld County, CO | Oil & Gas Property | Jan 2017 |
| 4015 | ARD STATE | Chaves County, NM | Oil Property | Nov 2018 |
| 4016 | ARDANTZ | Santa Barbara County, CA | Oil & Gas Property | Jul 2026 |
| 4017 | ARDELLA USA 21-3TFH-2B | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 4018 | ARDELLE | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 4019 | ARDELLE-STACI | Richland County, MT | Oil & Gas Property | Jun 2026 |
| 4020 | ARDEN USA 14-9TFH | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 4021 | ARDERY 1 | Haskell County, KS | Oil Property | Mar 2026 |
| 4022 | ARDINGER | Wise County, TX | Oil & Gas Property | Jun 2026 |
| 4023 | ARDIS | Bossier Parish, LA | Oil & Gas Property | May 1990 |
| 4024 | ARDIS | De Soto Parish, LA | Oil & Gas Property | Mar 1995 |
| 4025 | ARDIS & | Caddo Parish, LA | Oil Property | Nov 2024 |
| 4026 | ARDIS C | Bossier Parish, LA | Oil & Gas Property | Jan 2025 |
| 4027 | ARDIS USA 21-4TFH | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 4028 | ARDITH 4-E | Seward County, KS | Oil & Gas Property | Nov 2025 |
| 4029 | ARDITI | Dewitt County, TX | Oil & Gas Property | Jun 2026 |
| 4030 | ARDMORE | Carter County, OK | Oil & Gas Property | Jun 2026 |
| 4031 | ARDMORE AIRPORT | Carter County, OK | Oil & Gas Property | Jun 2026 |
| 4032 | ARDMORE FOUNDRY 1-7H | Carter County, OK | Oil & Gas Property | Jun 2026 |
| 4033 | ARDOUREL 33081718 | La Plata County, CO | Gas Property | Apr 2026 |
| 4034 | ARDREY | Stafford County, KS | Oil Property | Mar 2026 |
| 4035 | ARDREY | Clark County, KS | Oil Property | Apr 2026 |
| 4036 | ARE W | Summit County, UT | Oil & Gas Property | Jul 2026 |
| 4037 | ARELLANES | Santa Barbara County, CA | Oil & Gas Property | Jul 2026 |
| 4038 | ARELLANO | Weld County, CO | Oil & Gas Property | May 2026 |
| 4039 | ARENA A | Ward County, TX | Oil & Gas Property | Jun 2026 |
| 4040 | ARENA ROJA | Dimmit County, TX | Oil & Gas Property | Jun 2026 |
| 4041 | ARENA ROJA 15 10 FEDERAL UNIT | Lea County, NM | Oil & Gas Property | Jul 2026 |
| 4042 | ARENA ROJA 28 33 FEDERAL COM | Lea County, NM | Oil & Gas Property | Jul 2026 |
| 4043 | ARENA ROJA FEDERAL UNIT | Lea County, NM | Oil & Gas Property | Jul 2026 |
| 4044 | ARENA, ANNETTE & G J | Knox County, KY | Gas Property | Dec 2022 |
| 4045 | ARENOSO 22 FEDERAL | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 4046 | ARENS | Weld County, CO | Oil & Gas Property | May 2026 |
| 4047 | ARENSMAN | Barton County, KS | Oil Property | May 2026 |
| 4048 | ARENSMAN | Rice County, KS | Oil Property | Mar 2026 |
| 4049 | ARENT | Ouachita Parish, LA | Gas Property | Nov 2024 |
| 4050 | AREQUIPA | Kern County, CA | Oil Property | Jul 1986 |
| 4051 | ARES 27-26 UNIT | Martin County, TX | Oil & Gas Property | Jun 2026 |
| 4052 | ARES 4 STATE | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 4053 | ARES STATE | Lea County, NM | Oil & Gas Property | Apr 1999 |
| 4054 | ARESTIDE BROUSSARD | Vermilion Parish, LA | Oil & Gas Property | Oct 1997 |
| 4055 | ARFEDERAL 1591 | Carbon County, WY | Gas Property | Apr 2019 |
| 4056 | ARFEDERAL 1791 | Carbon County, WY | Gas Property | Jun 2026 |
| 4057 | ARFEE 1791 | Carbon County, WY | Gas Property | Jun 2026 |
| 4058 | ARGALI 1610-27 | Blaine County, OK | Oil & Gas Property | Jun 2026 |
| 4059 | ARGENT BARKSDALE 29-17 | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 4060 | ARGENTA | La Plata County, CO | Gas Property | May 2026 |
| 4061 | ARGENTA 3 | La Plata County, CO | Gas Property | Apr 2026 |
| 4062 | ARGENTINE | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 4063 | ARGIE VAUGHN | Pittsburg County, OK | Gas Property | Jul 2026 |
| 4064 | ARGILLITE 147-93-08D-05H | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 4065 | ARGO | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 4066 | ARGO | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 4067 | ARGO | Hughes County, OK | Gas Property | Oct 2018 |
| 4068 | ARGO | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 4069 | ARGO | Niobrara County, WY | Oil & Gas Property | Jul 2026 |
| 4070 | ARGO EVELEIGH | Barton County, KS | Oil Property | Apr 2026 |
| 4071 | ARGO KNIGHT | Andrews County, TX | Oil & Gas Property | Jun 2026 |
| 4072 | ARGO-MOSS | Ector County, TX | Oil & Gas Property | Apr 2026 |
| 4073 | ARGO-VEST | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 4074 | ARGOS FE | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 4075 | ARGUS ENERGY | Lincoln County, WV | Oil & Gas Property | Dec 2021 |
| 4076 | ARHOPULOS | Brazos County, TX | Oil & Gas Property | Jun 2026 |
| 4077 | ARIA | Upton County, TX | Oil & Gas Property | Jun 2026 |
| 4078 | ARIA | Morris County, TX | Oil & Gas Property | Jun 2026 |
| 4079 | ARIANA | Comanche County, KS | Oil & Gas Property | May 2026 |
| 4080 | ARICK | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 4081 | ARICK-HOOPER UNIT | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 4082 | ARICK-S | Midland County, TX | Oil & Gas Property | Jun 2026 |
| 4083 | ARIEL | Hughes County, OK | Oil & Gas Property | Jun 2026 |
| 4084 | ARIEL FED 3571 | Converse County, WY | Oil & Gas Property | Nov 2025 |
| 4085 | ARIEL FED 3571-1301 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 4086 | ARIEL J 7 | Weld County, CO | Oil & Gas Property | Aug 2018 |
| 4087 | ARIES | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 4088 | ARIES 20 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 4089 | ARIKARA | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 4090 | ARIKARA 15-22H | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 4091 | ARIO CORP | Knott County, KY | Oil & Gas Property | Dec 2024 |
| 4092 | ARISTIDES | Culberson County, TX | Oil & Gas Property | Jun 2026 |
| 4093 | ARISTOCRAT | Weld County, CO | Oil & Gas Property | May 2026 |
| 4094 | ARITHSON | Bowman County, ND | Oil & Gas Property | Jun 2026 |
| 4095 | ARIZOLA PETROLEUM CO | Lasalle Parish, LA | Oil Property | Nov 2024 |
| 4096 | ARIZOLA-LA PETRO AS | Lasalle Parish, LA | Oil Property | Jan 2025 |
| 4097 | ARIZONA JICARILLA | Rio Arriba County, NM | Oil & Gas Property | Jun 2026 |
| 4098 | ARIZONA JICARILLA B | Rio Arriba County, NM | Oil & Gas Property | Jun 2026 |
| 4099 | ARK 21-15 | Williams County, ND | Oil & Gas Property | Jun 2026 |
| 4100 | ARK 36 STATE | Eddy County, NM | Oil & Gas Property | Jul 2026 |