| 848645 | Jan 15, 2019 | Jan 15, 2019 | Heart Land Petroleum Corporation | Runnels | Bryan 17 #1 | 5,350 | 39935555 |
| 835724 | Jan 31, 2018 | Jan 31, 2018 | Heart Land Petroleum Corporation | Runnels | Mikeska #3A | 4,660 | 39932743 |
| 827027 | Jun 5, 2017 | Jun 5, 2017 | Heart Land Petroleum Corporation | Runnels | Mikeska #2 | 5,600 | 39935527 |
| 827026 | Jun 2, 2017 | Jun 2, 2017 | Heart Land Petroleum Corporation | Runnels | Mikeska #1 | 5,600 | 39935526 |
| 823620 | Mar 9, 2017 | Mar 9, 2017 | Heart Land Petroleum Corporation | Runnels | Bryan #1 | 5,350 | 39935523 |
| 823569 | Mar 9, 2017 | Mar 9, 2017 | Heart Land Petroleum Corporation | Runnels | Kruse #1 | 5,350 | 39935522 |
| 820483 | Dec 12, 2016 | Dec 12, 2016 | Heart Land Petroleum Corporation | Runnels | Chapman #1 | 5,350 | 39935516 |
| 820472 | Dec 12, 2016 | Dec 12, 2016 | Heart Land Petroleum Corporation | Runnels | Hoelscher #1 | 5,350 | 39935517 |
| 500647 | Oct 11, 2000 | Oct 11, 2000 | Heart Land Petroleum Corporation | Callahan | Dickey #1 | 2,000 | 05936549 |
| 492953 | Mar 10, 2000 | Mar 10, 2000 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #85 | 4,700 | 44133949 |
| 492952 | Mar 10, 2000 | Mar 10, 2000 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #86 | 5,000 | 44133950 |
| 492952Amendment | Mar 10, 2000 | Mar 10, 2000 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #86 | 5,000 | 44133950 |
| 492950 | Mar 10, 2000 | Mar 10, 2000 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #1SW | 4,500 | 44133951 |
| 490276 | Dec 10, 1999 | Dec 10, 1999 | Heart Land Petroleum Corporation | Haskell | Haskell #1 | 6,000 | 20732107 |
| 489070 | Nov 2, 1999 | Nov 2, 1999 | Heart Land Petroleum Corporation | Haskell | Cannon #1 | 5,990 | 20732107 |
| 486419 | Aug 5, 1999 | Aug 5, 1999 | Heart Land Petroleum Corporation | Jones | Taylor #1 | 4,000 | 25334472 |
| 485673 | Jul 6, 1999 | Jul 6, 1999 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #25 | 4,500 | 44103985 |
| 484540 | May 14, 1999 | May 14, 1999 | Heart Land Petroleum Corporation | Jones | Madison-Anson Unit #1 #1 | 4,000 | 25334471 |
| 481156 | Nov 25, 1998 | Nov 25, 1998 | Heart Land Petroleum Corporation | Coke | Stowe #4 | 5,800 | 08131771 |
| 480949 | Nov 17, 1998 | Nov 17, 1998 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #36 | 4,757 | 44131226 |
| 479516 | Sep 17, 1998 | Sep 17, 1998 | Heart Land Petroleum Corporation | Coke | Glenn #2 | 5,800 | 08131768 |
| 479007 | Aug 26, 1998 | Aug 26, 1998 | Heart Land Petroleum Corporation | Coke | Higgins, Ollie #2 | 5,800 | 08131765 |
| 475524 | Apr 22, 1998 | Apr 22, 1998 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #18 | 4,600 | 44102490 |
| 471528 | Dec 22, 1997 | Dec 22, 1997 | Heart Land Petroleum Corporation | Coke | Stowe #3 | 5,800 | 08131757 |
| 465928 | Oct 1, 1997 | Oct 1, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #28 | 4,470 | 44103941 |
| 467119 | Sep 4, 1997 | Sep 4, 1997 | Heart Land Petroleum Corporation | Coke | Boecking #2 | 5,800 | 08120088 |
| 465927 | Aug 21, 1997 | Aug 21, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #21 | 4,471 | 44103983 |
| 466304 | Aug 15, 1997 | Aug 15, 1997 | Heart Land Petroleum Corporation | Coke | Boecking #1 | 5,800 | 08131749 |
| 465929 | Aug 12, 1997 | Aug 12, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #26 | 4,643 | 44102492 |
| 465929Amendment | Aug 12, 1997 | Aug 12, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #26 | 4,643 | 44102492 |
| 465926 | Aug 12, 1997 | Aug 12, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #30 | 4,479 | 44103986 |
| 465925 | Aug 12, 1997 | Aug 12, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #17 | 4,661 | 44102491 |
| 463956 | Jun 18, 1997 | Jun 18, 1997 | Heart Land Petroleum Corporation | Coke | Stowe #2 | 5,800 | 08131744 |
| 462451 | May 15, 1997 | May 15, 1997 | Heart Land Petroleum Corporation | Taylor | West Ovalo Gardner Lime Unit #24 | 4,700 | 44102493 |
| 460851 | Apr 8, 1997 | Apr 8, 1997 | Heart Land Petroleum Corporation | Fisher | Guinn, Alma #1 | 3,999 | 15132507 |
| 459705 | Mar 11, 1997 | Mar 11, 1997 | Heart Land Petroleum Corporation | Coke | Stowe #1 | 5,800 | 08131736 |
| 446993 | Aug 1, 1996 | Aug 1, 1996 | Heart Land Petroleum Corporation | Taylor | Bird #1M | 2,250 | 44132977 |
| 446992 | Aug 1, 1996 | Aug 1, 1996 | Heart Land Petroleum Corporation | Taylor | Bird #8 | 2,250 | 44133672 |
| 446973 | Aug 1, 1996 | Aug 1, 1996 | Heart Land Petroleum Corporation | Taylor | Bird #1 | 2,250 | 44133464 |
| 450397 | Jul 16, 1996 | Jul 16, 1996 | Heart Land Petroleum Corporation | Coke | Glenn #1 | 5,800 | 08131721 |
| 450239 | Jul 11, 1996 | Jul 11, 1996 | Heart Land Petroleum Corporation | Coke | Higgins, Ollie #1 | 5,800 | 08131720 |
| 448151 | May 15, 1996 | May 15, 1996 | Heart Land Petroleum Corporation | Coke | Copeland #1A | 6,650 | 08131718 |
| 442541 | Dec 6, 1995 | Dec 6, 1995 | Heart Land Petroleum Corporation | Coke | CMT #3 #3 | 6,500 | 08131708 |
| 442541Amendment | Dec 6, 1995 | Dec 6, 1995 | Heart Land Petroleum Corporation | Coke | CMT #3 #3 | 6,650 | 08131708 |
| 442297 | Nov 28, 1995 | Nov 28, 1995 | Heart Land Petroleum Corporation | Runnels | Gray #1 | 4,500 | 39934413 |
| 442297Amendment | Nov 28, 1995 | Nov 28, 1995 | Heart Land Petroleum Corporation | Runnels | Gray #1 | 3,900 | 39934413 |
| 437217 | Jul 20, 1995 | Jul 20, 1995 | Heart Land Petroleum Corporation | Zavala | Kleinman #2 | 4,500 | 50732517 |
| 435673 | May 10, 1995 | May 10, 1995 | Heart Land Petroleum Corporation | Nolan | Moore #2A | 5,600 | 35332335 |
| 435008 | Apr 19, 1995 | Apr 19, 1995 | Heart Land Petroleum Corporation | Jones | Mitchell #1 | 5,500 | 25334249 |
| 433210 | Feb 23, 1995 | Feb 23, 1995 | Heart Land Petroleum Corporation | Palo Pinto | Richards Ranch #4 | 4,000 | 36334367 |
| 431617 | Jan 6, 1995 | Jan 6, 1995 | Heart Land Petroleum Corporation | Palo Pinto | Richards Ranch #3 | 4,000 | 36334351 |
| 430168 | Nov 18, 1994 | Nov 18, 1994 | Heart Land Petroleum Corporation | Palo Pinto | Pitman #2 | 4,000 | 36334333 |
| 429853Amendment | Nov 8, 1994 | Nov 8, 1994 | Heart Land Petroleum Corporation | Fisher | Brigadoon #1 | 5,235 | 15132419 |
| 429529 | Oct 28, 1994 | Oct 28, 1994 | Heart Land Petroleum Corporation | Taylor | Graham Lake #1H | 4,500 | 44133709 |
| 426264 | Jul 26, 1994 | Jul 26, 1994 | Heart Land Petroleum Corporation | Palo Pinto | Pitman #1 | 4,000 | 36334296 |
| 423618 | May 5, 1994 | May 5, 1994 | Heart Land Petroleum Corporation | Palo Pinto | Ruff #3 | 4,500 | 36334274 |
| 420733 | Feb 7, 1994 | Feb 7, 1994 | Heart Land Petroleum Corporation | Palo Pinto | Waddell #2 | 4,500 | 36333972 |
| 420733Amendment | Feb 7, 1994 | Feb 7, 1994 | Heart Land Petroleum Corporation | Palo Pinto | Waddell #2 | 4,500 | 36333972 |
| 419604 | Dec 22, 1993 | Dec 22, 1993 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #8A | 4,700 | 44133673 |
| 416666 | Oct 4, 1993 | Oct 4, 1993 | Heart Land Petroleum Corporation | Jones | Musick, Alton #2C | 4,000 | 25334105 |
| 412876 | Jun 16, 1993 | Jun 16, 1993 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #7A | 4,700 | 44133635 |
| 411066 | May 3, 1993 | May 3, 1993 | Heart Land Petroleum Corporation | Jones | Hawley #3 | 2,000 | 25302362 |
| 411221 | Apr 30, 1993 | Apr 30, 1993 | Heart Land Petroleum Corporation | Jones | Roberts, Alton #1 C | 4,000 | 25334064 |
| 409713 | Mar 10, 1993 | Mar 10, 1993 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #6A | 4,700 | 44133621 |
| 408245 | Jan 26, 1993 | Jan 26, 1993 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #4A | 4,800 | 44133611 |
| 405138 | Oct 23, 1992 | Oct 23, 1992 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #5 | 4,800 | 44133597 |
| 404841 | Oct 16, 1992 | Oct 16, 1992 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #2 | 4,800 | 44133594 |
| 404200 | Oct 2, 1992 | Oct 2, 1992 | Heart Land Petroleum Corporation | Runnels | Pharis #1 | 4,600 | 39934212 |
| 404199 | Oct 2, 1992 | Oct 2, 1992 | Heart Land Petroleum Corporation | Nolan | Pierce, Tommie #2 | 5,800 | 35332203 |
| 403188 | Sep 4, 1992 | Sep 4, 1992 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #4 | 4,800 | 44133586 |
| 402508 | Aug 19, 1992 | Aug 19, 1992 | Heart Land Petroleum Corporation | Taylor | Roberts, Alton #1 | 4,800 | 44133584 |
| 400845 | Jul 2, 1992 | Jul 2, 1992 | Heart Land Petroleum Corporation | Jones | Pomroy, R. O. #2 | 5,400 | 25334001 |
| 400401 | Jun 19, 1992 | Jun 19, 1992 | Heart Land Petroleum Corporation | Jones | Harrison, W.B. #1 | 3,800 | 25333998 |
| 400152 | Jun 13, 1992 | Jun 13, 1992 | Heart Land Petroleum Corporation | Taylor | Smith, J. E. #1 | 4,200 | 44133524 |
| 398994 | May 5, 1992 | May 5, 1992 | Heart Land Petroleum Corporation | Jones | Pomroy, R. O. #1 | 4,950 | 25333991 |
| 398994Amendment | May 5, 1992 | May 5, 1992 | Heart Land Petroleum Corporation | Jones | Pomroy, R. O. #1 | 4,750 | 25333991 |
| 398014 | Apr 1, 1992 | Apr 1, 1992 | Heart Land Petroleum Corporation | Runnels | Bridemeyer-Yates # 1 #1 | 3,850 | 39930479 |
| 395181 | Dec 17, 1991 | Dec 17, 1991 | Heart Land Petroleum Corporation | Runnels | Bridemeyer, Edward #1 | 4,500 | 39934177 |
| 394680 | Dec 3, 1991 | Dec 3, 1991 | Heart Land Petroleum Corporation | Nolan | Pierce, Tommie #1 | 6,800 | 35332139 |
| 393948 | Nov 13, 1991 | Nov 13, 1991 | Heart Land Petroleum Corporation | Runnels | Merfeld, Victor J. #2 | 4,500 | 39934170 |
| 392211 | Oct 17, 1991 | Oct 17, 1991 | Heart Land Petroleum Corporation | Runnels | Merfeld, Victor #1 | 4,100 | 39902492 |
| 374266 | Jun 18, 1990 | Jun 18, 1990 | Heart Land Petroleum Corporation | Callahan | Windham, Carol #3C | 4,700 | 05936080 |
| 370791 | May 2, 1990 | May 2, 1990 | Heart Land Petroleum Corporation | Jones | Clemmer, Clouse #1 | 4,800 | 25333842 |
| 372203 | Apr 19, 1990 | Apr 19, 1990 | Heart Land Petroleum Corporation | Callahan | Windham, Carol #1C | 4,700 | 05936030 |
| 370140 | Mar 1, 1990 | Mar 1, 1990 | Heart Land Petroleum Corporation | Callahan | Windham, Carol #2C | 4,700 | 05936055 |
| 365114 | Oct 17, 1989 | Oct 17, 1989 | Heart Land Petroleum Corporation | Callahan | Windham, Carol #1C | 4,700 | 05936030 |
| 365114Amendment | Oct 17, 1989 | Oct 17, 1989 | Heart Land Petroleum Corporation | Callahan | Windham, Carol #1C | 4,700 | 05936030 |
| 362411 | Aug 4, 1989 | Aug 4, 1989 | Heart Land Petroleum Corporation | Taylor | Antilley, Joe #2 | 2,000 | 44133393 |
| 358891 | May 8, 1989 | May 8, 1989 | Heart Land Petroleum Corporation | Taylor | Antilley, Joe #1 | 2,500 | 44133382 |
| 358891Amendment | May 8, 1989 | May 8, 1989 | Heart Land Petroleum Corporation | Taylor | Antilley, Joe #1 | 1,873 | 44133382 |
| 357725 | Apr 7, 1989 | Apr 7, 1989 | Heart Land Petroleum Corporation | Taylor | Windham, Carol #2 | 4,700 | 44133372 |
| 354996 | Jan 11, 1989 | Jan 11, 1989 | Heart Land Petroleum Corporation | Taylor | Windham, Carol #1 | 4,700 | 44133357 |
| 350924 | Sep 7, 1988 | Sep 7, 1988 | Heart Land Petroleum Corporation | Callahan | Windham, James T. #2C | 2,500 | 05935931 |
| 347472 | Jun 10, 1988 | Jun 10, 1988 | Heart Land Petroleum Corporation | Callahan | Windham, James T. #1C | 2,500 | 05935897 |
| 343508 | Mar 24, 1988 | Mar 24, 1988 | Heart Land Petroleum Corporation | Jones | Monk, Helen Veatch #1 | 3,600 | 25333697 |