| 497737 | Jul 27, 2000 | Jul 27, 2000 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #21 | 5,200 | 16933601 |
| 497737Amendment | Jul 27, 2000 | Jul 27, 2000 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #21S | 5,210 | 16933601 |
| 493633 | Mar 30, 2000 | Mar 30, 2000 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #24 | 5,200 | 16933579 |
| 491548 | Jan 28, 2000 | Jan 28, 2000 | Patterson Petroleum, Inc. | Lee | Colvin #1H | 15,000 | 28732504 |
| 490938 | Jan 13, 2000 | Jan 13, 2000 | Patterson Petroleum, Inc. | Garza | Slaughter "B" #5 | 5,150 | 16933565 |
| 490937 | Jan 13, 2000 | Jan 13, 2000 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #25 | 5,300 | 16933481 |
| 490541 | Dec 21, 1999 | Dec 21, 1999 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #22 | 5,200 | 16933562 |
| 490416 | Dec 16, 1999 | Dec 16, 1999 | Patterson Petroleum, Inc. | Fort Bend | Seale #1 | 8,100 | 15732083 |
| 490416Amendment | Dec 16, 1999 | Dec 16, 1999 | Patterson Petroleum, Inc. | Fort Bend | Seale #1 | 8,100 | 15732083 |
| 490414 | Dec 16, 1999 | Dec 16, 1999 | Patterson Petroleum, Inc. | Fort Bend | Hilmar Unit #1 | 8,500 | 15732082 |
| 490181 | Dec 9, 1999 | Dec 9, 1999 | Patterson Petroleum, Inc. | Fort Bend | Moore #220 | 3,500 | 15732079 |
| 489678 | Dec 7, 1999 | Dec 7, 1999 | Patterson Petroleum, Inc. | Loving | Harrison, Nell "14" #1 | 11,900 | 30130571 |
| 490079 | Dec 6, 1999 | Dec 6, 1999 | Patterson Petroleum, Inc. | Fayette | Lee #1HH | 14,500 | 14932930 |
| 490078 | Dec 6, 1999 | Dec 6, 1999 | Patterson Petroleum, Inc. | Fort Bend | Benton Trust #1 | 5,600 | 15732078 |
| 490078Amendment | Dec 6, 1999 | Dec 6, 1999 | Patterson Petroleum, Inc. | Fort Bend | Benton Trust #1 | 5,600 | 15732078 |
| 489930 | Nov 30, 1999 | Nov 30, 1999 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #23 | 5,200 | 16933559 |
| 489322 | Nov 9, 1999 | Nov 9, 1999 | Patterson Petroleum, Inc. | Garza | Kim #2 | 5,100 | 16933557 |
| 489298 | Nov 8, 1999 | Nov 8, 1999 | Patterson Petroleum, Inc. | Garza | Slaughter "B" #3 | 5,200 | 16933556 |
| 488908 | Oct 27, 1999 | Oct 27, 1999 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #19 | 5,200 | 16933554 |
| 488712 | Oct 21, 1999 | Oct 21, 1999 | Patterson Petroleum, Inc. | Garza | John Unit Waterflood #20 | 5,200 | 16933553 |
| 488181 | Oct 4, 1999 | Oct 4, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #4 | 5,400 | 15732074 |
| 488181Amendment | Oct 4, 1999 | Oct 4, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #4 | 5,600 | 15732074 |
| 488181Amendment | Oct 4, 1999 | Oct 4, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco "B" #4 | 5,600 | 15732074 |
| 488181Amendment | Oct 4, 1999 | Oct 4, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco "B" #4 | 5,600 | 15732074 |
| 488178 | Oct 4, 1999 | Oct 4, 1999 | Patterson Petroleum, Inc. | Garza | Slaughter "B" #2 | 5,100 | 16933550 |
| 487138 | Aug 31, 1999 | Aug 31, 1999 | Patterson Petroleum, Inc. | Pecos | Wilson #1 | 5,200 | 37136937 |
| 487138Amendment | Aug 31, 1999 | Aug 31, 1999 | Patterson Petroleum, Inc. | Pecos | PV - Wilson #1 | 5,200 | 37136937 |
| 486835 | Aug 26, 1999 | Aug 26, 1999 | Patterson Petroleum, Inc. | Nolan | 69 Ranch #1 | 5,400 | 35332659 |
| 486294 | Aug 2, 1999 | Aug 2, 1999 | Patterson Petroleum, Inc. | Garza | Slaughter "B" #1 | 5,100 | 16933544 |
| 485985 | Jul 27, 1999 | Jul 27, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington "C" #4 | 5,600 | 15732065 |
| 485985Amendment | Jul 27, 1999 | Jul 27, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington "C" #4 | 5,600 | 15732065 |
| 485984 | Jul 27, 1999 | Jul 27, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington "A" #2 | 5,600 | 15732064 |
| 485984Amendment | Jul 27, 1999 | Jul 27, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington "A" #2 | 5,600 | 15732064 |
| 485983 | Jul 21, 1999 | Jul 21, 1999 | Patterson Petroleum, Inc. | Fort Bend | Breco Dyer #1 | 9,500 | 15732063 |
| 485983Amendment | Jul 21, 1999 | Jul 21, 1999 | Patterson Petroleum, Inc. | Fort Bend | Breco-Dyer #1 | 9,500 | 15732063 |
| 485780 | Jul 21, 1999 | Jul 21, 1999 | Patterson Petroleum, Inc. | Garza | John "B" #1 | 5,100 | 16933542 |
| 485690 | Jul 8, 1999 | Jul 8, 1999 | Patterson Petroleum, Inc. | Fort Bend | Smith-Dyer #1 | 9,500 | 15732060 |
| 485690Amendment | Jul 8, 1999 | Jul 8, 1999 | Patterson Petroleum, Inc. | Fort Bend | Smith-Dyer #1 | 9,500 | 15732060 |
| 485683 | Jul 6, 1999 | Jul 6, 1999 | Patterson Petroleum, Inc. | Fort Bend | Dyer "B" #3 | 9,500 | 15732059 |
| 485683Amendment | Jul 6, 1999 | Jul 6, 1999 | Patterson Petroleum, Inc. | Fort Bend | Dyer "B" #3 | 9,500 | 15732059 |
| 485279 | Jun 17, 1999 | Jun 17, 1999 | Patterson Petroleum, Inc. | Garza | Kim #1 | 5,200 | 16933540 |
| 485013 | Jun 11, 1999 | Jun 11, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington #3 | 5,600 | 15732050 |
| 485013Amendment | Jun 11, 1999 | Jun 11, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington "B" #3 | 5,600 | 15732050 |
| 485013Amendment | Jun 11, 1999 | Jun 11, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington "B" #3 | 5,600 | 15732050 |
| 485015 | Jun 9, 1999 | Jun 9, 1999 | Patterson Petroleum, Inc. | Fort Bend | Kutach #1 | 9,000 | 15732053 |
| 485014 | Jun 9, 1999 | Jun 9, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #1 | 5,600 | 15732052 |
| 485014Amendment | Jun 9, 1999 | Jun 9, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #1 | 5,600 | 15732052 |
| 485014Amendment | Jun 9, 1999 | Jun 9, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #1 | 5,600 | 15732052 |
| 485010 | Jun 9, 1999 | Jun 9, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco -A- #3 | 5,600 | 15732051 |
| 484812 | Jun 1, 1999 | Jun 1, 1999 | Patterson Petroleum, Inc. | Pecos | Wilson #402 | 5,200 | 37136911 |
| 484812Amendment | Jun 1, 1999 | Jun 1, 1999 | Patterson Petroleum, Inc. | Pecos | Wilson #402 | 4,950 | 37136911 |
| 484070 | Apr 23, 1999 | Apr 23, 1999 | Patterson Petroleum, Inc. | Loving | Bowdle "48" #1 | 10,350 | 30131111 |
| 483721 | Apr 7, 1999 | Apr 7, 1999 | Patterson Petroleum, Inc. | Garza | East Lott #1 | 5,200 | 16933538 |
| 483626 | Mar 31, 1999 | Mar 31, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington #1 | 5,500 | 15732045 |
| 483626Amendment | Mar 31, 1999 | Mar 31, 1999 | Patterson Petroleum, Inc. | Fort Bend | Huntington #1 | 5,500 | 15732045 |
| 483371 | Mar 18, 1999 | Mar 18, 1999 | Patterson Petroleum, Inc. | Robertson | Christopher #1H | 12,000 | 39530257 |
| 482953 | Feb 26, 1999 | Feb 26, 1999 | Patterson Petroleum, Inc. | Nolan | Alexander Heirs #3 | 5,400 | 35332649 |
| 482391 | Feb 3, 1999 | Feb 3, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #2 | 5,600 | 15732039 |
| 482391Amendment | Feb 3, 1999 | Feb 3, 1999 | Patterson Petroleum, Inc. | Fort Bend | American Breco #2 | 5,600 | 15732039 |
| 482206 | Jan 26, 1999 | Jan 26, 1999 | Patterson Petroleum, Inc. | Fort Bend | Orchard "A" #3 | 4,000 | 15732038 |
| 482205 | Jan 26, 1999 | Jan 26, 1999 | Patterson Petroleum, Inc. | Fort Bend | Orchard #1 | 4,000 | 15732037 |
| 482162 | Jan 21, 1999 | Jan 21, 1999 | Patterson Petroleum, Inc. | Fort Bend | Dyer "A" #2 | 9,400 | 15732036 |
| 482162Amendment | Jan 21, 1999 | Jan 21, 1999 | Patterson Petroleum, Inc. | Fort Bend | Dyer "A" #2 | 10,100 | 15732036 |
| 482161 | Jan 21, 1999 | Jan 21, 1999 | Patterson Petroleum, Inc. | Fort Bend | Dyer #1 | 9,000 | 15732035 |
| 482161Amendment | Jan 21, 1999 | Jan 21, 1999 | Patterson Petroleum, Inc. | Fort Bend | Dyer #1 | 9,000 | 15732035 |
| 481414 | Dec 10, 1998 | Dec 10, 1998 | Patterson Petroleum, Inc. | Pecos | Huffman "12" #1 | 5,200 | 37136888 |
| 481413 | Dec 10, 1998 | Dec 10, 1998 | Patterson Petroleum, Inc. | Pecos | Pope "4" #1 | 5,500 | 37136889 |
| 481190 | Nov 30, 1998 | Nov 30, 1998 | Patterson Petroleum, Inc. | Pecos | University "24" #1 | 3,900 | 37183522 |
| 480975 | Nov 18, 1998 | Nov 18, 1998 | Patterson Petroleum, Inc. | Nolan | Adams #1 | 5,400 | 35332642 |
| 480974 | Nov 18, 1998 | Nov 18, 1998 | Patterson Petroleum, Inc. | Loving | Bowdle "42" #2 | 11,500 | 30131110 |
| 480666 | Nov 10, 1998 | Nov 10, 1998 | Patterson Petroleum, Inc. | Val Verde | Bell Estate #3 #1 | 18,000 | 46530557 |
| 480564 | Oct 30, 1998 | Oct 30, 1998 | Patterson Petroleum, Inc. | Loving | Quinn "37" #1 | 11,500 | 30131109 |
| 480115 | Oct 13, 1998 | Oct 13, 1998 | Patterson Petroleum, Inc. | Garza | John #11 | 5,100 | 16933529 |
| 480056 | Oct 9, 1998 | Oct 9, 1998 | Patterson Petroleum, Inc. | King | Masterson #1 | 6,200 | 26932324 |
| 480024 | Oct 8, 1998 | Oct 8, 1998 | Patterson Petroleum, Inc. | Jackson | Hollingsworth #F 2 | 4,800 | 23933016 |
| 479751 | Sep 30, 1998 | Sep 30, 1998 | Patterson Petroleum, Inc. | Pecos | Wilson #302 | 5,000 | 37136869 |
| 479751Amendment | Sep 30, 1998 | Sep 30, 1998 | Patterson Petroleum, Inc. | Pecos | Wilson #302 | 1,822 | 37136869 |
| 479771 | Sep 29, 1998 | Sep 29, 1998 | Patterson Petroleum, Inc. | Garza | Slaughter "18" #10 | 5,100 | 16933528 |
| 479477 | Sep 16, 1998 | Sep 16, 1998 | Patterson Petroleum, Inc. | Pecos | Wilson #202 | 5,000 | 37136867 |
| 479477Amendment | Sep 16, 1998 | Sep 16, 1998 | Patterson Petroleum, Inc. | Pecos | Wilson #202 | 5,180 | 37136867 |
| 479448 | Sep 15, 1998 | Sep 15, 1998 | Patterson Petroleum, Inc. | Nolan | Alexander Heirs #2 | 5,400 | 35332639 |
| 478321 | Jul 28, 1998 | Jul 28, 1998 | Patterson Petroleum, Inc. | Pecos | Wilson #102 | 5,100 | 37136859 |
| 478179 | Jul 22, 1998 | Jul 22, 1998 | Patterson Petroleum, Inc. | Garza | Koonsman "21" #1 | 5,200 | 16933525 |
| 477931 | Jul 14, 1998 | Jul 14, 1998 | Patterson Petroleum, Inc. | Grimes | Knotts Unit #1H | 16,300 | 18530641 |
| 477931Amendment | Jul 14, 1998 | Jul 14, 1998 | Patterson Petroleum, Inc. | Grimes | Knotts Unit #1H | 16,300 | 18530641 |
| 477750 | Jul 7, 1998 | Jul 7, 1998 | Patterson Petroleum, Inc. | Garza | Brothers - Horizon Unit #2 | 5,100 | 16933523 |
| 477461 | Jun 30, 1998 | Jun 30, 1998 | Patterson Petroleum, Inc. | Andrews | Flying "W" 14 #1 | 4,500 | 00338442 |
| 477342 | Jun 22, 1998 | Jun 22, 1998 | Patterson Petroleum, Inc. | Garza | Brothers-Horizon Unit #1 | 5,100 | 16933521 |
| 477341 | Jun 22, 1998 | Jun 22, 1998 | Patterson Petroleum, Inc. | Pecos | Duncan "D" #4 | 5,100 | 37136850 |
| 476589 | May 26, 1998 | May 26, 1998 | Patterson Petroleum, Inc. | Ward | Pyote Gas Unit 7 #2 | 14,000 | 47534569 |
| 476423 | May 19, 1998 | May 19, 1998 | Patterson Petroleum, Inc. | Nolan | Alexander Heirs #1 | 5,400 | 35332627 |
| 476422 | May 19, 1998 | May 19, 1998 | Patterson Petroleum, Inc. | Nolan | Harris, B. K. "T" #7 | 5,400 | 35332628 |
| 476283 | May 14, 1998 | May 14, 1998 | Patterson Petroleum, Inc. | Garza | John #10 | 5,100 | 16933519 |
| 476044 | May 6, 1998 | May 6, 1998 | Patterson Petroleum, Inc. | Garza | Slaughter #9 | 5,100 | 16933518 |
| 476043 | May 6, 1998 | May 6, 1998 | Patterson Petroleum, Inc. | King | Beggs 214 #2 | 7,000 | 26920008 |
| 475073 | Apr 6, 1998 | Apr 6, 1998 | Patterson Petroleum, Inc. | Garza | John #9 | 5,150 | 16933512 |
| 474811Amendment | Mar 27, 1998 | Mar 27, 1998 | Patterson Petroleum, Inc. | Garza | PLK #3105 | 5,200 | 16933511 |
| 474102 | Mar 5, 1998 | Mar 5, 1998 | Patterson Petroleum, Inc. | Garza | Brothers Horizon #4 | 5,100 | 16933509 |
| 473856 | Feb 27, 1998 | Feb 27, 1998 | Patterson Petroleum, Inc. | Garza | John 3D #1 | 5,200 | 16933508 |
| 473856Amendment | Feb 27, 1998 | Feb 27, 1998 | Patterson Petroleum, Inc. | Garza | John 3D #1 | 5,220 | 16933508 |