| 2501 | HICKMAN RICHARD W | Licking County, OH | Oil & Gas Property | Dec 1997 |
| 2502 | HICKORY CLAY | Carroll County, OH | Oil & Gas Property | Dec 2024 |
| 2503 | HICKORY LAKE | Holmes County, OH | Oil & Gas Property | Dec 2024 |
| 2504 | HICKS | Lake County, OH | Oil & Gas Property | Dec 1990 |
| 2505 | HIGGINS | Morrow County, OH | Oil & Gas Property | Dec 1995 |
| 2506 | HIGHLAND-SOM DEVELOPMENT CO | Summit County, OH | Oil & Gas Property | Dec 2004 |
| 2507 | HIGHMAN | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 2508 | HILL | Muskingum County, OH | Oil & Gas Property | Dec 2024 |
| 2509 | HILL | Guernsey County, OH | Oil & Gas Property | Dec 2023 |
| 2510 | HILL | Morgan County, OH | Oil & Gas Property | Dec 2019 |
| 2511 | HILL | Noble County, OH | Oil & Gas Property | Dec 2013 |
| 2512 | HILLBILLY | Muskingum County, OH | Oil & Gas Property | Dec 2024 |
| 2513 | HILLBILLY PARK MARSHLAND | Muskingum County, OH | Oil Property | Dec 2024 |
| 2514 | HILLEARY | Licking County, OH | Oil & Gas Property | Dec 2015 |
| 2515 | HILLEGAS | Portage County, OH | Oil & Gas Property | Dec 2023 |
| 2516 | HILLER E & S | Ashland County, OH | Oil Property | Dec 2004 |
| 2517 | HILLES | Mahoning County, OH | Oil & Gas Property | Dec 2024 |
| 2518 | HILLINGER | Geauga County, OH | Oil & Gas Property | Dec 2009 |
| 2519 | HILTY UNIT | Holmes County, OH | Oil Property | Dec 2024 |
| 2520 | HINDEL | Muskingum County, OH | Oil & Gas Property | Dec 2024 |
| 2521 | HINDERLONG | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 2522 | HINER | Wayne County, OH | Oil & Gas Property | Dec 2024 |
| 2523 | HINES | Athens County, OH | Oil & Gas Property | Dec 2023 |
| 2524 | HINES | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 2525 | HINES UNIT | Tuscarawas County, OH | Oil & Gas Property | Dec 2023 |
| 2526 | HINKLE | Medina County, OH | Oil & Gas Property | Dec 2000 |
| 2527 | HIPP | Knox County, OH | Oil & Gas Property | Dec 2024 |
| 2528 | HIPP | Holmes County, OH | Oil & Gas Property | Dec 2024 |
| 2529 | HIPP JOHN | Holmes County, OH | Oil & Gas Property | Dec 2001 |
| 2530 | HIPP LUMBER CO | Holmes County, OH | Oil & Gas Property | Dec 2024 |
| 2531 | HIPP MARY JO | Knox County, OH | Oil & Gas Property | Dec 2003 |
| 2532 | HIPPLEY | Mahoning County, OH | Oil & Gas Property | Dec 2024 |
| 2533 | HIRAM COLLEGE (VENTURE | Portage County, OH | Oil & Gas Property | Dec 2011 |
| 2534 | HITE | Hocking County, OH | Oil Property | Dec 2024 |
| 2535 | HITE | Licking County, OH | Oil & Gas Property | Dec 2024 |
| 2536 | HITZ | Stark County, OH | Oil & Gas Property | Dec 2023 |
| 2537 | HIVELY | Mahoning County, OH | Oil & Gas Property | Dec 2024 |
| 2538 | HM YODER 33-8-2 | Jefferson County, OH | Gas Property | Mar 2025 |
| 2539 | HN STO-26 HN NTG | Harrison County, OH | Oil & Gas Property | Mar 2025 |
| 2540 | HOBET MINING | Gallia County, OH | Oil & Gas Property | Dec 2024 |
| 2541 | HOCHSTETLER 7-11-5 | Harrison County, OH | Oil & Gas Property | Mar 2025 |
| 2542 | HOCHSTETLER LESTER | Holmes County, OH | Oil & Gas Property | Dec 2003 |
| 2543 | HOCK | Muskingum County, OH | Oil & Gas Property | Dec 2022 |
| 2544 | HOCKENBERRY | Fairfield County, OH | Oil & Gas Property | Dec 2024 |
| 2545 | HOCKING | Hocking County, OH | Oil & Gas Property | Dec 2023 |
| 2546 | HOCKING TECHNICAL COLLEGE | Athens County, OH | Oil & Gas Property | Dec 2020 |
| 2547 | HOCKING VALLE | Hocking County, OH | Oil & Gas Property | Dec 2024 |
| 2548 | HOCKING VALLEY PROD | Vinton County, OH | Oil & Gas Property | Dec 2023 |
| 2549 | HODGE | Wayne County, OH | Oil & Gas Property | Dec 2024 |
| 2550 | HODGES | Guernsey County, OH | Oil & Gas Property | Dec 2021 |
| 2551 | HOFACRE | Wayne County, OH | Oil & Gas Property | Dec 1997 |
| 2552 | HOFER | Columbiana County, OH | Oil & Gas Property | Dec 2024 |
| 2553 | HOFFERT E | Washington County, OH | Oil & Gas Property | Dec 2015 |
| 2554 | HOFFMAN | Holmes County, OH | Oil & Gas Property | Dec 2024 |
| 2555 | HOFFMAN | Coshocton County, OH | Oil & Gas Property | Dec 2024 |
| 2556 | HOFFMAN | Portage County, OH | Oil & Gas Property | Dec 2024 |
| 2557 | HOFFMAN | Wayne County, OH | Oil & Gas Property | Dec 2013 |
| 2558 | HOFFMAN UNIT | Tuscarawas County, OH | Oil & Gas Property | Dec 2023 |
| 2559 | HOFSTATTER | Geauga County, OH | Oil & Gas Property | Dec 2023 |
| 2560 | HOFSTETTER | Wayne County, OH | Oil & Gas Property | Dec 1997 |
| 2561 | HOGSTON 210 | Belmont County, OH | Gas Property | Mar 2025 |
| 2562 | HOGUE | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 2563 | HOGUE UNIT | Tuscarawas County, OH | Oil & Gas Property | Dec 2023 |
| 2564 | HOHMAN | Stark County, OH | Oil & Gas Property | Dec 2023 |
| 2565 | HOISINGTON | Wayne County, OH | Oil & Gas Property | Dec 2024 |
| 2566 | HOLCOMB | Perry County, OH | Oil & Gas Property | Dec 2024 |
| 2567 | HOLDERBAUM | Coshocton County, OH | Oil & Gas Property | Dec 2023 |
| 2568 | HOLDREN | Washington County, OH | Oil & Gas Property | Dec 2023 |
| 2569 | HOLESKI | Coshocton County, OH | Oil & Gas Property | Dec 2005 |
| 2570 | HOLESKO | Trumbull County, OH | Oil & Gas Property | Dec 2024 |
| 2571 | HOLIDAY | Monroe County, OH | Oil & Gas Property | Dec 2024 |
| 2572 | HOLLAND | Morrow County, OH | Oil Property | Dec 2024 |
| 2573 | HOLLAND | Washington County, OH | Oil & Gas Property | Dec 2024 |
| 2574 | HOLLENBACK ANDY | Licking County, OH | Gas Property | Dec 2024 |
| 2575 | HOLLEY | Ashtabula County, OH | Oil & Gas Property | Dec 2024 |
| 2576 | HOLLIDAY | Monroe County, OH | Gas Property | Dec 2024 |
| 2577 | HOLLIDAY | Fairfield County, OH | Oil & Gas Property | Dec 1999 |
| 2578 | HOLLINGSWORTH | Guernsey County, OH | Oil & Gas Property | Dec 2024 |
| 2579 | HOLLOPETER | Medina County, OH | Oil & Gas Property | Dec 1995 |
| 2580 | HOLLY HILLS | Medina County, OH | Oil & Gas Property | Dec 1992 |
| 2581 | HOLLYFIELD | Carroll County, OH | Oil & Gas Property | Dec 2024 |
| 2582 | HOLMAN | Muskingum County, OH | Oil Property | Dec 2024 |
| 2583 | HOLMES | Holmes County, OH | Oil & Gas Property | Dec 2024 |
| 2584 | HOLMES 26-13-5 | Carroll County, OH | Oil & Gas Property | Mar 2025 |
| 2585 | HOLMES CO INFIRMARY | Holmes County, OH | Oil & Gas Property | Dec 2023 |
| 2586 | HOLMES LIMESTONE | Tuscarawas County, OH | Oil & Gas Property | Dec 2022 |
| 2587 | HOLMES LIMESTONE | Tuscarawas County, OH | Oil & Gas Property | Dec 2024 |
| 2588 | HOLMES LIMESTONE | Stark County, OH | Oil & Gas Property | Dec 2021 |
| 2589 | HOLMES LIMESTONE | Coshocton County, OH | Oil & Gas Property | Dec 2024 |
| 2590 | HOLMES LIMESTONE CO | Coshocton County, OH | Oil & Gas Property | Dec 2024 |
| 2591 | HOLONKO | Mahoning County, OH | Oil & Gas Property | Dec 2024 |
| 2592 | HOLT | Coshocton County, OH | Oil Property | Dec 2003 |
| 2593 | HOLT CLARENCE | Coshocton County, OH | Oil & Gas Property | Dec 2005 |
| 2594 | HOLT PHIL | Coshocton County, OH | Oil & Gas Property | Dec 2009 |
| 2595 | HOLTZ COMM | Tuscarawas County, OH | Oil & Gas Property | Dec 2024 |
| 2596 | HOMER | Stark County, OH | Oil & Gas Property | Dec 2023 |
| 2597 | HOMER H | Meigs County, OH | Oil & Gas Property | Dec 2022 |
| 2598 | HOMER SMITH | Perry County, OH | Oil & Gas Property | Dec 2023 |
| 2599 | HOMESTEAD | Mahoning County, OH | Oil & Gas Property | Dec 2024 |
| 2600 | HOOBLER | Coshocton County, OH | Oil & Gas Property | Dec 2024 |