| 532028 | May 16, 2003 | May 16, 2003 | Calpine Natural Gas L.P. | Stanford, P. H. #5 | 10,000 | 47938426 |
| 530902 | May 16, 2003 | May 16, 2003 | Duke Energy Intrast. Network LLC | Olmitos Lateral #53 | 270 | 47938402 |
| 531983 | May 15, 2003 | May 15, 2003 | Ricochet Energy, Inc. | Running, W. #1 | 12,000 | 47938425 |
| 531949 | May 15, 2003 | May 15, 2003 | Conocophillips Company | Dix Ranch A-1768 #4 | 9,000 | 47938424 |
| 531206 | May 14, 2003 | May 14, 2003 | Houston Exploration Company, The | Hubberd, W. M. "C-1" #63 | 9,500 | 47938408 |
| 531870 | May 13, 2003 | May 13, 2003 | Chevron U. S. A. Inc. | Bruni-Alexander-Martinez GU #1 | 9,500 | 47938423 |
| 531870Amendment | May 13, 2003 | May 13, 2003 | Chevron U. S. A. Inc. | Bruni-Alexander-Martinez GU #1 | 9,500 | 47938423 |
| 531807 | May 12, 2003 | May 12, 2003 | Conocophillips Company | Benavides, Rosa V. A2 #89 | 9,500 | 47938422 |
| 531720 | May 12, 2003 | May 12, 2003 | Houston Exploration Company, The | Martinez-Barrera G.U. #6 | 9,297 | 47938419 |
| 531539 | May 12, 2003 | May 12, 2003 | Cordele Development Corporation | De la Garza, Raul #4336 | 3,900 | 47938417 |
| 531792 | May 9, 2003 | May 9, 2003 | EOG Resources, Inc. | Garner, Tully C. #44 | 7,100 | 47938420 |
| 531762 | May 9, 2003 | May 9, 2003 | Conocophillips Company | B. M. T. #166 | 10,150 | 47938421 |
| 531752 | May 9, 2003 | May 9, 2003 | North Central Oil Corp. | Russell - Winch #15 | 10,273 | 47936762 |
| 531705 | May 8, 2003 | May 8, 2003 | EOG Resources, Inc. | Villarreal #10 | 12,000 | 47938331 |
| 531648 | May 7, 2003 | May 7, 2003 | Kerns O & G, Inc. | Brask Ranch #8 | 5,800 | 47938418 |
| 531506 | May 7, 2003 | May 7, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #205 | 10,500 | 47938416 |
| 531505 | May 7, 2003 | May 7, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #211 | 10,300 | 47938415 |
| 531384 | May 5, 2003 | May 5, 2003 | Awp Operating Company | Booth, W. V. #9 | 6,900 | 47938410 |
| 531471 | May 2, 2003 | May 2, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #146 | 9,500 | 47936638 |
| 531467 | May 2, 2003 | May 2, 2003 | Lewis Petro Properties, Inc. | Booth,w.v. et al 2292 "H" #7AH | 10,300 | 47938414 |
| 531467Amendment | May 2, 2003 | May 2, 2003 | Lewis Petro Properties, Inc. | Booth, W. V. et al 2292 "H" #7AH | 10,300 | 47938414 |
| 531437 | May 2, 2003 | May 2, 2003 | Conocophillips Company | Carr #139 | 9,850 | 47938413 |
| 531426 | May 2, 2003 | May 2, 2003 | Edge Petroleum Oper. Co., Inc. | Lundell Ranch #12 | 10,850 | 47938412 |
| 531418 | May 2, 2003 | May 2, 2003 | Killam Oil Co., Ltd. | Vaquillas-Borrego #11 | 13,000 | 47938411 |
| 531067 | May 1, 2003 | May 1, 2003 | Crimson Energy Company, LC | Brask #8 | 6,500 | 47938403 |
| 531068 | Apr 30, 2003 | Apr 30, 2003 | Crimson Energy Company, LC | Brask #7 | 6,500 | 47938404 |
| 530311 | Apr 30, 2003 | Apr 30, 2003 | Conocophillips Company | Lundell C #9 | 10,920 | 47938386 |
| 531252 | Apr 29, 2003 | Apr 29, 2003 | EOG Resources, Inc. | Garner, Tully C. #45 | 7,100 | 47938409 |
| 531236 | Apr 28, 2003 | Apr 28, 2003 | Kerns O & G, Inc. | Brask Ranch #1 | 5,600 | 47938407 |
| 531115 | Apr 28, 2003 | Apr 28, 2003 | United Oil & Minerals L. P. | Vaquillas 135 #3 | 10,500 | 47938406 |
| 531114 | Apr 25, 2003 | Apr 25, 2003 | United Oil & Minerals L. P. | Vaquillas Ranch 1631 #10 | 10,500 | 47938405 |
| 531051 | Apr 23, 2003 | Apr 23, 2003 | Thorp Petroleum Corporation | Gonzales #3 | 9,000 | 47938401 |
| 531037 | Apr 23, 2003 | Apr 23, 2003 | Chevron U. S. A. Inc. | Bruni Mineral Trust "B" #32 | 9,800 | 47938400 |
| 530983 | Apr 23, 2003 | Apr 23, 2003 | Conocophillips Company | Vergara-Rayzor GU #10 | 10,400 | 47938399 |
| 530965 | Apr 21, 2003 | Apr 21, 2003 | Montecristo Exploration, Inc. | Santa Teresita #1 | 10,650 | 47933178 |
| 530892 | Apr 21, 2003 | Apr 21, 2003 | Kerns O & G, Inc. | Petty, O.S. #806 | 5,761 | 47933267 |
| 530825 | Apr 16, 2003 | Apr 16, 2003 | Lewis Petro Properties, Inc. | Fuller 2292 "H" #3H | 10,300 | 47938398 |
| 530825Amendment | Apr 16, 2003 | Apr 16, 2003 | Lewis Petro Properties, Inc. | Fuller 2292 "H" #3H | 10,300 | 47938398 |
| 530726 | Apr 14, 2003 | Apr 14, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #209 | 10,000 | 47938397 |
| 530725 | Apr 14, 2003 | Apr 14, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #203 | 10,000 | 47938396 |
| 530554 | Apr 10, 2003 | Apr 10, 2003 | EOG Resources, Inc. | Benavides FMT #1 | 14,000 | 47938395 |
| 530528 | Apr 10, 2003 | Apr 10, 2003 | Eex Operating, L.P. | Alley #19 | 12,000 | 47938394 |
| 530493 | Apr 9, 2003 | Apr 9, 2003 | Conocophillips Company | B. M. T. #178 | 10,650 | 47938393 |
| 530492 | Apr 9, 2003 | Apr 9, 2003 | Conocophillips Company | B. M. T. #175 | 11,000 | 47938392 |
| 530492Amendment | Apr 9, 2003 | Apr 9, 2003 | Conocophillips Company | B. M. T. #175 | 11,000 | 47938392 |
| 530457 | Apr 8, 2003 | Apr 8, 2003 | Conocophillips Company | B.M.T. B #6 | 11,100 | 47938391 |
| 530452 | Apr 8, 2003 | Apr 8, 2003 | Conocophillips Company | B.M.T. A #11 | 11,600 | 47938390 |
| 530442 | Apr 8, 2003 | Apr 8, 2003 | Houston Exploration Company, The | Hubberd #62 | 11,700 | 47938389 |
| 530401 | Apr 7, 2003 | Apr 7, 2003 | Lewis Petro Properties, Inc. | Booth, W. V. Jr. "U" #1H | 10,300 | 47938388 |
| 530401Amendment | Apr 7, 2003 | Apr 7, 2003 | Lewis Petro Properties, Inc. | Booth, W. V. Jr. "U" #1H | 10,300 | 47938388 |
| 530399 | Apr 7, 2003 | Apr 7, 2003 | Killam Oil Co., Ltd. | Killam & Hurd Fee 1614 #3 | 11,000 | 47938387 |
| 530228 | Apr 4, 2003 | Apr 4, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #200 | 10,000 | 47938383 |
| 530301 | Apr 3, 2003 | Apr 3, 2003 | Virtex Petroleum Company, Inc. | James #20 | 7,350 | 47938385 |
| 530283 | Apr 3, 2003 | Apr 3, 2003 | Houston Exploration Company, The | Alexander, Charles #51 | 9,500 | 47938384 |
| 529924 | Apr 3, 2003 | Apr 3, 2003 | Conocophillips Company | B. M. T. A #9 | 11,200 | 47938371 |
| 529924Amendment | Apr 3, 2003 | Apr 3, 2003 | Conocophillips Company | B. M. T. A #9 | 11,200 | 47938371 |
| 530205 | Apr 2, 2003 | Apr 2, 2003 | Kerns O & G, Inc. | Brask Ranch #9 | 5,800 | 47938382 |
| 530181 | Apr 1, 2003 | Apr 1, 2003 | 3TEC Energy Corporation | Rettig, Mabel #42 | 7,500 | 47938381 |
| 529925 | Mar 31, 2003 | Mar 31, 2003 | Conocophillips Company | B.M.T. C #3 | 10,500 | 47938372 |
| 530079 | Mar 28, 2003 | Mar 28, 2003 | Lewis Petro Properties, Inc. | Cerrito 1389 #16D | 8,600 | 47938380 |
| 530079Amendment | Mar 28, 2003 | Mar 28, 2003 | Lewis Petro Properties, Inc. | Cerrito 1389 #16D | 9,000 | 47938380 |
| 530042 | Mar 28, 2003 | Mar 28, 2003 | Crimson Energy Company, LC | Briscoe "M" State #1 | 6,500 | 47938378 |
| 530041 | Mar 28, 2003 | Mar 28, 2003 | Crimson Energy Company, LC | Briscoe "L" State #1 | 6,500 | 47938379 |
| 530052 | Mar 27, 2003 | Mar 27, 2003 | Houston Exploration Company, The | Hubberd #61 | 10,200 | 47938377 |
| 530026 | Mar 27, 2003 | Mar 27, 2003 | Conocophillips Company | Vaquillas Ranch E #210 | 12,100 | 47938376 |
| 530026Amendment | Mar 27, 2003 | Mar 27, 2003 | Conocophillips Company | Vaquillas Ranch E #210 | 12,100 | 47938376 |
| 530017 | Mar 27, 2003 | Mar 27, 2003 | Kerns O & G, Inc. | Gates Ranch "Y" #207A | 5,800 | 47938375 |
| 529400 | Mar 27, 2003 | Mar 27, 2003 | Calpine Natural Gas L.P. | South Callaghan Ranch #195 | 10,000 | 47938360 |
| 529970 | Mar 26, 2003 | Mar 26, 2003 | Lewis Petro Properties, Inc. | Cerrito 1389 #15D | 8,600 | 47938374 |
| 529926 | Mar 25, 2003 | Mar 25, 2003 | Conocophillips Company | Bruni Ranch #101 | 12,180 | 47938373 |
| 529327 | Mar 24, 2003 | Mar 24, 2003 | Crimson Energy Company, LC | Brask #4 | 6,500 | 47938357 |
| 529869 | Mar 21, 2003 | Mar 21, 2003 | Virtex Petroleum Company, Inc. | James Trust 1355 #2 | 7,350 | 47938370 |
| 529776 | Mar 19, 2003 | Mar 19, 2003 | EOG Resources, Inc. | Garner, Tully C. #40 | 7,100 | 47938369 |
| 529774 | Mar 19, 2003 | Mar 19, 2003 | EOG Resources, Inc. | Garner, Tully C. #41 | 7,100 | 47938368 |
| 529773 | Mar 19, 2003 | Mar 19, 2003 | EOG Resources, Inc. | Garner, Tully C. #42 | 7,100 | 47938367 |
| 529753 | Mar 19, 2003 | Mar 19, 2003 | Conocophillips Company | Hein Trust #18 | 12,200 | 47938366 |
| 529721 | Mar 19, 2003 | Mar 19, 2003 | Houston Exploration Company, The | Alexander, Charles #50 | 9,500 | 47938365 |
| 529490 | Mar 18, 2003 | Mar 18, 2003 | Killam Oil Co., Ltd. | BMT-Calvillo #2A | 12,000 | 47937427 |
| 529618 | Mar 14, 2003 | Mar 14, 2003 | EOG Resources, Inc. | Garner, Tully C. #39 | 7,100 | 47938364 |
| 529617 | Mar 14, 2003 | Mar 14, 2003 | EOG Resources, Inc. | James Trust #13 | 7,100 | 47938363 |
| 529597 | Mar 14, 2003 | Mar 14, 2003 | Lewis Petro Properties, Inc. | Gates Ranch "B" #5032 | 5,800 | 47934145 |
| 529594 | Mar 14, 2003 | Mar 14, 2003 | Lewis Petro Properties, Inc. | Gates Ranch "B" #4032 | 5,650 | 47932500 |
| 529593 | Mar 14, 2003 | Mar 14, 2003 | Lewis Petro Properties, Inc. | Gates Ranch "B" #3032 | 5,800 | 47932260 |
| 529592 | Mar 14, 2003 | Mar 14, 2003 | Lewis Petro Properties, Inc. | Gates Ranch "B" #2032 | 5,700 | 47932131 |
| 529577 | Mar 14, 2003 | Mar 14, 2003 | Lewis Petro Properties, Inc. | Gates Ranch "B" #1032 | 5,650 | 47932089 |
| 529559 | Mar 13, 2003 | Mar 13, 2003 | Eex Operating, L.P. | Alley #18 | 12,000 | 47938362 |
| 529545 | Mar 13, 2003 | Mar 13, 2003 | EOG Resources, Inc. | BMT/K&H "E" #5 | 11,800 | 47938264 |
| 529527 | Mar 13, 2003 | Mar 13, 2003 | Lewis Petro Properties, Inc. | Palafox "H" #1H | 10,000 | 47938053 |
| 529441 | Mar 13, 2003 | Mar 13, 2003 | Crimson Energy Company, LC | Briscoe "E" #45 | 5,200 | 47932706 |
| 529504 | Mar 12, 2003 | Mar 12, 2003 | EOG Resources, Inc. | Frost Trust 29 #2 | 12,300 | 47938361 |
| 529423 | Mar 10, 2003 | Mar 10, 2003 | Zachry Exploration, Ltd. | Rancho Blanco #15 | 8,500 | 47938359 |
| 529366 | Mar 10, 2003 | Mar 10, 2003 | Crimson Energy Company, LC | Briscoe "J" #14 | 6,500 | 47938358 |
| 529366Amendment | Mar 10, 2003 | Mar 10, 2003 | St. Mary Land & Exploration Co. | Briscoe "J" #14 | 6,500 | 47938358 |
| 558620 | Mar 7, 2003 | Mar 7, 2003 | Huber Energy L.P. | Briscoe E #276 | 6,000 | 47939049 |
| 529347 | Mar 7, 2003 | Mar 7, 2003 | Virtex Petroleum Company, Inc. | Triphene Middleton "9" #1 | 7,300 | 47938356 |
| 529298 | Mar 7, 2003 | Mar 7, 2003 | Lewis Petro Properties, Inc. | Gates 31 "A" #1 | 6,000 | 47938355 |
| 529295 | Mar 7, 2003 | Mar 7, 2003 | Conocophillips Company | Huisache Cattle Co. #7 | 11,480 | 47938354 |
| 529180 | Mar 7, 2003 | Mar 7, 2003 | Houston Exploration Company, The | Alexander, Charles #48 | 9,500 | 47938352 |
| 529171 | Mar 7, 2003 | Mar 7, 2003 | Conocophillips Company | Hirsch Estate 2094 #11 | 9,450 | 47938350 |
| 529139 | Mar 7, 2003 | Mar 7, 2003 | Crimson Energy Company, LC | Brask #5 | 6,500 | 47938349 |