| 91601 | O W RIGGLE | Armstrong County, PA | Gas Property | Dec 2025 |
| 91602 | O W SEA | Jefferson County, OK | Oil Property | Feb 2026 |
| 91603 | O WAGNER | Washington County, OH | Oil & Gas Property | Dec 2025 |
| 91604 | O WILLIAMS | Major County, OK | Oil & Gas Property | Nov 2025 |
| 91605 | O'DWYER 10-09 | Cleburne County, AR | Gas Property | Jul 2024 |
| 91606 | O'NEILL 17-20 1-H | Williams County, ND | Oil & Gas Property | Apr 2026 |
| 91607 | O-V-W FLIPPEN SAND UNIT | Taylor County, TX | Oil & Gas Property | Mar 2026 |
| 91608 | O. A. REIMELT | Haskell County, KS | Oil & Gas Property | Jul 2019 |
| 91609 | O. BERGSTROM | Bottineau County, ND | Oil & Gas Property | Apr 2026 |
| 91610 | O. BORCHERS | Gonzales County, TX | Oil & Gas Property | Mar 2026 |
| 91611 | O. E. JOSSERAND | Stanton County, KS | Gas Property | Feb 2026 |
| 91612 | O. F. DOWDY | Seward County, KS | Gas Property | Feb 2026 |
| 91613 | O. G. CON | Finney County, KS | Oil Property | Jul 2018 |
| 91614 | O. H. MCALISTER | Wise County, TX | Oil & Gas Property | Mar 2026 |
| 91615 | O. J. BROWN | Finney County, KS | Oil & Gas Property | Apr 2020 |
| 91616 | O. L. LAUBER | Woodson County, KS | Oil Property | May 1998 |
| 91617 | O. LUEKING | Yuma County, CO | Gas Property | Apr 2026 |
| 91618 | O. M. AKERS UNIT | Kearny County, KS | Gas Property | Feb 2026 |
| 91619 | O. O. FULLER | Ellsworth County, KS | Oil Property | Feb 2026 |
| 91620 | O. P. DAVIS B | Colusa County, CA | Gas Property | Mar 2026 |
| 91621 | O. P. WILLIAMS | Grant County, KS | Gas Property | Feb 2026 |
| 91622 | O. R. WITHAM | Chautauqua County, KS | Oil Property | Feb 2026 |
| 91623 | O. S. RANCH A | Garza County, TX | Oil & Gas Property | Mar 2026 |
| 91624 | O. T. GILBERT | Stevens County, KS | Gas Property | Feb 2026 |
| 91625 | O. T. LONG | Noble County, OK | Oil & Gas Property | Mar 2026 |
| 91626 | O. V. RAY | Haskell County, KS | Gas Property | Feb 2026 |
| 91627 | O.A. LAMPLEY G | Lavaca County, TX | Oil & Gas Property | Mar 2026 |
| 91628 | O.B. BESS | Grimes County, TX | Oil & Gas Property | Sep 2001 |
| 91629 | O.B. HOLT | Ector County, TX | Oil & Gas Property | May 2017 |
| 91630 | O.B. RANCH | Wharton County, TX | Oil & Gas Property | Sep 2017 |
| 91631 | O.B.T.C | Crockett County, TX | Oil & Gas Property | Feb 2026 |
| 91632 | O.F.BARNES U | Grant County, KS | Gas Property | Feb 2026 |
| 91633 | O.G. ROGERS ESTATE | Anderson County, TX | Oil & Gas Property | Mar 2026 |
| 91634 | O.H.SHOWS | Jones County, MS | Oil Property | Feb 2025 |
| 91635 | O.L.WILSON | Adams County, MS | Oil & Gas Property | Apr 2026 |
| 91636 | O.LINDSAY | Caddo County, OK | Oil & Gas Property | Mar 2026 |
| 91637 | O.P. RATLIFF | Vinton County, OH | Oil & Gas Property | Dec 2025 |
| 91638 | O.T. (ALLOCATION) | Brazos County, TX | Oil & Gas Property | Feb 2026 |
| 91639 | O.W. ALEXANDER | Panola County, TX | Oil & Gas Property | Mar 2026 |
| 91640 | O.Z. SMITH | Alfalfa County, OK | Oil & Gas Property | Jan 2000 |
| 91641 | OA AO285 | Terrebonne Parish, LA | Oil & Gas Property | Feb 2019 |
| 91642 | OAK 1 | Kingman County, KS | Gas Property | Feb 2026 |
| 91643 | OAK 148-94 12C-01-1H | Dunn County, ND | Oil & Gas Property | Apr 2026 |
| 91644 | OAK 1819 | Campbell County, WY | Oil & Gas Property | Apr 2026 |
| 91645 | OAK 55-1-30 UNIT 1H | Loving County, TX | Oil & Gas Property | Mar 2026 |
| 91646 | OAK 55-1-31-30 | Loving County, TX | Oil & Gas Property | Mar 2026 |
| 91647 | OAK C | Kingman County, KS | Gas Property | Feb 2026 |
| 91648 | OAK FLAT | Ventura County, CA | Oil & Gas Property | Mar 2026 |
| 91649 | OAK FLAT | Fresno County, CA | Oil Property | Jan 1997 |
| 91650 | OAK GROVE | Jefferson County, AL | Gas Property | Jan 2004 |
| 91651 | OAK GROVE | Ventura County, CA | Oil & Gas Property | Mar 2026 |
| 91652 | OAK GROVE UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 91653 | OAK HILL | Cattaraugus County, NY | Oil & Gas Property | Dec 2023 |
| 91654 | OAK HILL GAS UNIT | Rusk County, TX | Oil & Gas Property | Mar 2026 |
| 91655 | OAK ISLAND A | Bexar County, TX | Oil & Gas Property | Mar 2026 |
| 91656 | OAK PARK | Ventura County, CA | Oil & Gas Property | Dec 2025 |
| 91657 | OAK RIDGE N | Susquehanna County, PA | Gas Property | Mar 2026 |
| 91658 | OAK STATE UNIT | Reeves County, TX | Gas Property | Feb 2026 |
| 91659 | OAK TREE | Kingfisher County, OK | Oil & Gas Property | Mar 2026 |
| 91660 | OAK TREE FAIRWAY UNIT | Mercer County, PA | Oil & Gas Property | Dec 2025 |
| 91661 | OAK VALLEY | Johnson County, TX | Gas Property | Mar 2026 |
| 91662 | OAK VALLEY 2 | Dawson County, TX | Oil & Gas Property | Mar 2026 |
| 91663 | OAKASON NV FEDERAL | Eddy County, NM | Oil & Gas Property | Jun 2022 |
| 91664 | OAKDALE | Dunn County, ND | Oil & Gas Property | Apr 2026 |
| 91665 | OAKES | Dewey County, OK | Oil & Gas Property | Mar 2026 |
| 91666 | OAKES | Dewey County, OK | Oil & Gas Property | Mar 2026 |
| 91667 | OAKES | Woodson County, KS | Oil Property | May 2012 |
| 91668 | OAKES | Warren County, PA | Oil & Gas Property | Dec 2024 |
| 91669 | OAKES | McKean County, PA | Oil Property | Dec 2007 |
| 91670 | OAKES | Barber County, KS | Oil & Gas Property | Feb 2026 |
| 91671 | OAKES | Woodson County, KS | Oil Property | Feb 2026 |
| 91672 | OAKES | Love County, OK | Oil & Gas Property | Mar 2026 |
| 91673 | OAKES 25 | Texas County, OK | Oil & Gas Property | Mar 2026 |
| 91674 | OAKES C.W. ESTATE | Limestone County, TX | Oil & Gas Property | Mar 2026 |
| 91675 | OAKES G B | Chautauqua County, KS | Oil Property | Jan 2026 |
| 91676 | OAKES PAT GAS UNIT | Limestone County, TX | Oil & Gas Property | Mar 2026 |
| 91677 | OAKES T.C. ESTATE GAS UNIT | Freestone County, TX | Oil & Gas Property | Mar 2026 |
| 91678 | OAKES, OLLIE | Metcalfe County, KY | Oil Property | Nov 2004 |
| 91679 | OAKES-TURNER GAS UNIT NO. 1 | Freestone County, TX | Oil & Gas Property | Mar 2026 |
| 91680 | OAKHURST F | Montgomery County, KS | Gas Property | Aug 2024 |
| 91681 | OAKLAND | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 91682 | OAKLAND | Lincoln County, OK | Oil & Gas Property | Mar 2026 |
| 91683 | OAKLAND | Mountrail County, ND | Oil & Gas Property | Apr 2026 |
| 91684 | OAKLAND | Adams County, MS | Oil Property | Jan 1997 |
| 91685 | OAKLAND | Kern County, CA | Oil & Gas Property | Feb 2026 |
| 91686 | OAKLAND 151-103-29B-32-1H | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 91687 | OAKLAND CEMET | Warren County, PA | Oil & Gas Property | Dec 2025 |
| 91688 | OAKLAND CORP | Cass County, TX | Oil & Gas Property | Nov 2022 |
| 91689 | OAKLAND CORP WATERFLOOD UNIT | Cass County, TX | Oil & Gas Property | Feb 2026 |
| 91690 | OAKLAND FEDERAL 1 | McKenzie County, ND | Oil & Gas Property | Apr 2026 |
| 91691 | OAKLEAF, LINN | Labette County, KS | Gas Property | Feb 2026 |
| 91692 | OAKLEY | Hopkins County, KY | Oil Property | Feb 2022 |
| 91693 | OAKLEY | Dewey County, OK | Oil & Gas Property | Mar 2026 |
| 91694 | OAKLEY 27-34-1TH | Campbell County, WY | Oil & Gas Property | Apr 2026 |
| 91695 | OAKLEY FED | Converse County, WY | Oil & Gas Property | Mar 2026 |
| 91696 | OAKLIEF-SHARROCK | Coshocton County, OH | Oil & Gas Property | Dec 2025 |
| 91697 | OAKMAN | Love County, OK | Oil & Gas Property | Mar 2026 |
| 91698 | OAKMONT | Dawson County, TX | Oil & Gas Property | Mar 2026 |
| 91699 | OAKMONT 11 10 STATE COM | Lea County, NM | Oil & Gas Property | Apr 2026 |
| 91700 | OAKMONT 1505 | Kingfisher County, OK | Oil & Gas Property | Mar 2026 |