| 639175Amendment | May 21, 2007 | May 21, 2007 | Charro Operating, L.L.C. | Vidauri "E" #7 | 6,200 | 39132770 |
| 638811 | May 18, 2007 | May 18, 2007 | Acock/Anaqua Operating Co., LP | Heard #2 | 7,200 | 39132768 |
| 639173 | May 17, 2007 | May 17, 2007 | Charro Operating, L.L.C. | Vidauri #14 | 6,200 | 39132769 |
| 638725 | May 17, 2007 | May 17, 2007 | Hilcorp Energy Company | Heard, Mrs. Fannie V. W. #105 | 6,000 | 39131743 |
| 638725Amendment | May 17, 2007 | May 17, 2007 | Hilcorp Energy Company | Heard, Fannie V. W., Mrs. #105 | 6,000 | 39131743 |
| 638697 | May 17, 2007 | May 17, 2007 | Kebo Oil & Gas, Inc. | Shelton #4 | 6,100 | 39132767 |
| 637114 | May 17, 2007 | May 17, 2007 | Salida Exploration, LLC | Roche #2 | 8,000 | 39132766 |
| 638590 | May 16, 2007 | May 16, 2007 | Republic Resources, LLC. | Rooke #1 | 9,600 | 39132705 |
| 638226 | May 15, 2007 | May 15, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #20 | 5,925 | 39100428 |
| 638226Amendment | May 15, 2007 | May 15, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #20 | 5,925 | 39100428 |
| 638396 | May 14, 2007 | May 14, 2007 | Forest Oil Corporation | Welder "C" #25 | 5,800 | 39132172 |
| 638375 | May 14, 2007 | May 14, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 34 | 4,500 | 39100318 |
| 638373 | May 14, 2007 | May 14, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 42 | 4,490 | 39130418 |
| 638421 | May 12, 2007 | May 12, 2007 | Hilcorp Energy Company | Heard, Claude E. et Al #17 | 5,925 | 39100549 |
| 638419 | May 12, 2007 | May 12, 2007 | Hilcorp Energy Company | Heard, Fannie V. W., Mrs. #2 | 5,900 | 39100672 |
| 638244 | May 11, 2007 | May 11, 2007 | T - C Oil Company | Willow Creek-B- #1 | 10,000 | 39132765 |
| 638225 | May 11, 2007 | May 11, 2007 | Hilcorp Energy Company | Heard, Mrs. Fannie V. W. #27 | 5,925 | 39100559 |
| 638081 | May 8, 2007 | May 8, 2007 | Hilcorp Energy Company | Heard, Clement #6 | 5,925 | 39100843 |
| 638080 | May 8, 2007 | May 8, 2007 | Hilcorp Energy Company | Heard, Claude E. et Al #24 | 5,923 | 39100654 |
| 638072 | May 8, 2007 | May 8, 2007 | T - C Oil Company | O'Connor, Martin -G- #1 | 10,000 | 39132764 |
| 638071 | May 8, 2007 | May 8, 2007 | T - C Oil Company | T-C Oil Co.-O'Connor #2 | 4,550 | 39160007 |
| 637908 | May 7, 2007 | May 7, 2007 | T - C Oil Company | Martin O'Connor -H- #1 | 10,000 | 39132763 |
| 638070 | May 2, 2007 | May 2, 2007 | T - C Oil Company | Martin O'Connor-J- #1 | 10,000 | 39132762 |
| 637553 | May 2, 2007 | May 2, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 3G | 6,106 | 39100220 |
| 637553Amendment | May 2, 2007 | May 2, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 3G | 6,106 | 39100220 |
| 636871 | Apr 26, 2007 | Apr 26, 2007 | T - C Oil Company | T-C Oil Co.-O'Connor #14 | 4,484 | 39100363 |
| 636074 | Apr 23, 2007 | Apr 23, 2007 | CTR Petroleum, Inc. | F.V.W. Heard "B" #22 | 6,812 | 39131440 |
| 637127 | Apr 20, 2007 | Apr 20, 2007 | Hilcorp Energy Company | Annie Reilly et Vir #15 | 6,705 | 39130205 |
| 636694 | Apr 18, 2007 | Apr 18, 2007 | Hilcorp Energy Company | Reilly, Annie et Vir #1G | 5,900 | 39100772 |
| 636691 | Apr 16, 2007 | Apr 16, 2007 | Hilcorp Energy Company | Heard, Claude E. et Al #7 | 5,925 | 39100668 |
| 636695 | Apr 14, 2007 | Apr 14, 2007 | Hilcorp Energy Company | Heard, Claude E. et Al #14 | 5,923 | 39100552 |
| 636689 | Apr 14, 2007 | Apr 14, 2007 | Hilcorp Energy Company | Heard, Claude E. et Al #19 | 5,925 | 39100650 |
| 636452 | Apr 13, 2007 | Apr 13, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D164 | 4,656 | 39132496 |
| 636484 | Apr 11, 2007 | Apr 11, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 87 | 4,475 | 39132598 |
| 635923 | Apr 2, 2007 | Apr 2, 2007 | Hilcorp Energy Company | O'Connor, Thomas "B" #35 | 6,150 | 39101812 |
| 635765 | Mar 30, 2007 | Mar 30, 2007 | Hilcorp Energy Company | Lambert, M. F. "A" #4 | 6,500 | 39101771 |
| 635484 | Mar 27, 2007 | Mar 27, 2007 | T - C Oil Company | Salt Creek -A- #1 | 10,000 | 39132761 |
| 634541 | Mar 21, 2007 | Mar 21, 2007 | Hilcorp Energy Company | Lambert, M. F. #68 | 6,150 | 39101348 |
| 635153 | Mar 20, 2007 | Mar 20, 2007 | Hilcorp Energy Company | Reilly, Annie et Vir #2GD | 4,569 | 39100773 |
| 635153Amendment | Mar 20, 2007 | Mar 20, 2007 | Hilcorp Energy Company | Reilly, Annie et Vir #2GD | 4,569 | 39100773 |
| 635023 | Mar 19, 2007 | Mar 19, 2007 | Hilcorp Energy Company | Lambert, M. F. #83 | 5,930 | 39101188 |
| 634904 | Mar 15, 2007 | Mar 15, 2007 | Hilcorp Energy Company | O'Connor, Thomas "C" #84 | 6,100 | 39131612 |
| 634903 | Mar 15, 2007 | Mar 15, 2007 | Hilcorp Energy Company | O'Connor, Thomas "C" #4G | 5,980 | 39101159 |
| 634900 | Mar 15, 2007 | Mar 15, 2007 | Hilcorp Energy Company | Heard, Clement #21 | 7,810 | 39130204 |
| 634896 | Mar 15, 2007 | Mar 15, 2007 | Hilcorp Energy Company | Heard, Clement #24 | 7,808 | 39131588 |
| 634727 | Mar 13, 2007 | Mar 13, 2007 | T - C Oil Company | O'Connor, Martin -D- #1 | 6,200 | 39132688 |
| 634366 | Mar 12, 2007 | Mar 12, 2007 | Hilcorp Energy Company | Lambert Gas Unit #4 | 5,925 | 39102951 |
| 634401 | Mar 8, 2007 | Mar 8, 2007 | T - C Oil Company | Strip #1 | 2,400 | 39132405 |
| 633812 | Feb 26, 2007 | Feb 26, 2007 | T - C Oil Company | T-C Oil Co.-O'Connor #22 | 4,500 | 39100269 |
| 633811 | Feb 26, 2007 | Feb 26, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 26 | 4,725 | 39100316 |
| 633367 | Feb 15, 2007 | Feb 15, 2007 | Hilcorp Energy Company | Lambert, M.F. #210 | 8,311 | 39132692 |
| 633367Amendment | Feb 15, 2007 | Feb 15, 2007 | Hilcorp Energy Company | Lambert, M. F. #210 | 8,311 | 39132692 |
| 630260 | Feb 15, 2007 | Feb 15, 2007 | Acock/Anaqua Operating Co., LP | J.M. O'Brien -E- #6 | 7,000 | 39132757 |
| 630260Amendment | Feb 15, 2007 | Feb 15, 2007 | Acock/Anaqua Operating Co., LP | J.M. O'Brien -E- #6 | 7,000 | 39132757 |
| 633414 | Feb 14, 2007 | Feb 14, 2007 | Hilcorp Energy Company | Reilly, Annie et Vir #15 | 6,705 | 39130205 |
| 633272 | Feb 13, 2007 | Feb 13, 2007 | T - C Oil Company | T-C Oil Co. -O'Connor #65 | 4,525 | 39131765 |
| 633175 | Feb 12, 2007 | Feb 12, 2007 | Hilcorp Energy Company | Lambert #151 | 8,300 | 39132356 |
| 633103 | Feb 9, 2007 | Feb 9, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 85 | 8,150 | 39130419 |
| 633101 | Feb 9, 2007 | Feb 9, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D184 | 4,650 | 39132576 |
| 633097 | Feb 9, 2007 | Feb 9, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D189 | 4,678 | 39132587 |
| 633094 | Feb 9, 2007 | Feb 9, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D150 | 5,885 | 39131949 |
| 633092 | Feb 9, 2007 | Feb 9, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 59 | 4,650 | 39130171 |
| 632440 | Feb 6, 2007 | Feb 6, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 45 | 5,830 | 39104012 |
| 631734 | Feb 1, 2007 | Feb 1, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 72 | 7,758 | 39130287 |
| 632655 | Jan 31, 2007 | Jan 31, 2007 | Hilcorp Energy Company | O'Connor, Thomas "A" #5G | 5,996 | 39101487 |
| 632626 | Jan 31, 2007 | Jan 31, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 40 | 4,525 | 39130306 |
| 632625 | Jan 31, 2007 | Jan 31, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 38 | 4,538 | 39130168 |
| 632600 | Jan 30, 2007 | Jan 30, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 89 | 8,180 | 39130430 |
| 632599 | Jan 30, 2007 | Jan 30, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D138 | 4,701 | 39131790 |
| 632598 | Jan 30, 2007 | Jan 30, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D113 | 4,630 | 39131306 |
| 632597 | Jan 30, 2007 | Jan 30, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 22 | 6,200 | 39100330 |
| 632562 | Jan 30, 2007 | Jan 30, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 29 | 4,500 | 39100347 |
| 632437 | Jan 26, 2007 | Jan 26, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 11 | 5,825 | 39100276 |
| 632437Amendment | Jan 26, 2007 | Jan 26, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D 11 | 5,825 | 39100276 |
| 631982 | Jan 19, 2007 | Jan 19, 2007 | Acock/Anaqua Operating Co., LP | Miguelita Scanio #16 | 7,500 | 39132760 |
| 631901 | Jan 19, 2007 | Jan 19, 2007 | T - C Oil Company | O'Connor, Dennis et al -L- #L 59 | 4,500 | 39131813 |
| 631045 | Jan 19, 2007 | Jan 19, 2007 | Hilcorp Energy Company | Lambert Gas Unit #87 | 5,996 | 39101191 |
| 631745 | Jan 12, 2007 | Jan 12, 2007 | Hilcorp Energy Company | Williams, Maude et al "A" #D117 | 4,661 | 39131513 |
| 631637 | Jan 11, 2007 | Jan 11, 2007 | T - C Oil Company | Duke Ranch -L- #1 | 5,822 | 39132664 |
| 630668 | Jan 8, 2007 | Jan 8, 2007 | High Plains Gas Systems, Inc. | Scanio-Hawn #1 | 9,000 | 39132759 |
| 630668Amendment | Jan 8, 2007 | Jan 8, 2007 | High Plains Gas Systems, Inc. | Scanio-Hawn #1 | 9,000 | 39132759 |
| 630577 | Jan 8, 2007 | Jan 8, 2007 | Hilcorp Energy Company | Bauer, Mary Claire et Vir #11 | 6,750 | 39130194 |
| 630575 | Jan 8, 2007 | Jan 8, 2007 | Hilcorp Energy Company | Rielly, Annie et Vir #3 | 5,975 | 39100764 |
| 630575Amendment | Jan 8, 2007 | Jan 8, 2007 | Hilcorp Energy Company | Rielly, Annie et Vir #3 | 5,975 | 39100764 |
| 630573 | Jan 8, 2007 | Jan 8, 2007 | Hilcorp Energy Company | Ira Heard "A' #2 | 5,929 | 39100737 |
| 630573Amendment | Jan 8, 2007 | Jan 8, 2007 | Hilcorp Energy Company | Heard, Ira "A" #2 | 5,929 | 39100737 |
| 630299 | Dec 21, 2006 | Dec 21, 2006 | High Plains Gas Systems, Inc. | Scanio/Shelton #5 | 6,515 | 39132605 |
| 630242 | Dec 15, 2006 | Dec 15, 2006 | Hilcorp Energy Company | Williams, Maude et al "A" #D 77 | 7,147 | 39130345 |
| 630517 | Dec 14, 2006 | Dec 14, 2006 | Kebo Oil & Gas, Inc. | Shelton #2R | 7,200 | 39132758 |
| 630517Amendment | Dec 14, 2006 | Dec 14, 2006 | Kebo Oil & Gas, Inc. | Shelton #2R | 7,200 | 39132758 |
| 630005 | Dec 6, 2006 | Dec 6, 2006 | T - C Oil Company | T-C Oil Co.-O'Connor #63 | 5,000 | 39131695 |
| 630003 | Dec 6, 2006 | Dec 6, 2006 | T - C Oil Company | O'Connor -D- #D 32 | 4,510 | 39131394 |
| 630001 | Dec 6, 2006 | Dec 6, 2006 | T - C Oil Company | O'Connor, Dennis et al -L- #L 25 | 5,010 | 39100345 |
| 629993 | Dec 5, 2006 | Dec 5, 2006 | Aurora Resources Corporation | Arc - Thomson - Barrow Ranch #1 | 6,500 | 39132756 |
| 629877 | Dec 4, 2006 | Dec 4, 2006 | Ventex Operating Corp. | Hines #1 | 6,000 | 39132755 |
| 629543 | Nov 28, 2006 | Nov 28, 2006 | Charro Operating, L.L.C. | O'Connor, M. V. Estate "C" #6 | 6,600 | 39132754 |
| 628894 | Nov 28, 2006 | Nov 28, 2006 | Hilcorp Energy Company | Tom O'CONNOR(5800 Sd)fld Unit #Q852 | 5,917 | 39100451 |
| 628893 | Nov 28, 2006 | Nov 28, 2006 | Hilcorp Energy Company | Heard, Ira "A" #13 | 8,150 | 39130142 |
| 629295 | Nov 21, 2006 | Nov 21, 2006 | T - C Oil Company | O'Connor -D- #D 31 | 4,550 | 39130534 |
| 628715 | Nov 21, 2006 | Nov 21, 2006 | Hilcorp Energy Company | Williams, Maude et al "A" #D 43 | 4,500 | 39104021 |