| 541238 | Jan 27, 2004 | Jan 27, 2004 | Dewbre Petroleum Corporation | Lavaca | Williams Gas Unit #5 | 5,500 | 28533063 |
| 539778 | Dec 17, 2003 | Dec 17, 2003 | Dewbre Petroleum Corporation | Nueces | R. E. Taylor #7 | 5,500 | 35533601 |
| 539280 | Dec 4, 2003 | Dec 4, 2003 | Dewbre Petroleum Corporation | Hidalgo | Bentsen Heirs #1 | 8,200 | 21530979 |
| 538474 | Nov 13, 2003 | Nov 13, 2003 | Dewbre Petroleum Corporation | Webb | Gloria Garcia, et Al #1 | 1,200 | 47938566 |
| 538396 | Nov 13, 2003 | Nov 13, 2003 | Dewbre Petroleum Corporation | Hidalgo | Valderas Gas Unit #2 | 11,500 | 21533157 |
| 538007 | Oct 29, 2003 | Oct 29, 2003 | Dewbre Petroleum Corporation | Duval | Dcrc -State Section 80 #5 | 1,460 | 13138663 |
| 536845 | Sep 29, 2003 | Sep 29, 2003 | Dewbre Petroleum Corporation | Hidalgo | Robertson Gas Unit #1 | 10,000 | 21533144 |
| 536524 | Sep 23, 2003 | Sep 23, 2003 | Dewbre Petroleum Corporation | Hidalgo | Casa Blanca 'A' #1R | 7,250 | 21533080 |
| 536618 | Sep 19, 2003 | Sep 19, 2003 | Dewbre Petroleum Corporation | Wharton | Lehrer Sec. 4 W #1 | 4,500 | 48134575 |
| 536472 | Sep 16, 2003 | Sep 16, 2003 | Dewbre Petroleum Corporation | Hidalgo | Casa Blanca 'B' #1 | 9,000 | 21533140 |
| 534893 | Aug 5, 2003 | Aug 5, 2003 | Dewbre Petroleum Corporation | Hidalgo | Scout Royalty #1 | 11,500 | 21533125 |
| 533393 | Jun 23, 2003 | Jun 23, 2003 | Dewbre Petroleum Corporation | Kleberg | Dietz Heirs #1 | 14,500 | 27332392 |
| 530618 | Apr 16, 2003 | Apr 16, 2003 | Dewbre Petroleum Corporation | Jim Wells | Mobil-Arco Unit #1 | 5,985 | 24931813 |
| 529598 | Mar 20, 2003 | Mar 20, 2003 | Dewbre Petroleum Corporation | Starr | Slick Estate '527' #2 | 4,600 | 42733593 |
| 528642 | Mar 2, 2003 | Mar 2, 2003 | Dewbre Petroleum Corporation | Jim Wells | Mobil-Arco Unit #3 | 6,000 | 24932020 |
| 528504 | Feb 24, 2003 | Feb 24, 2003 | Dewbre Petroleum Corporation | Calhoun | State Tract 46 #1 | 9,000 | 05701178 |
| 528216 | Feb 7, 2003 | Feb 7, 2003 | Dewbre Petroleum Corporation | Hidalgo | Casa Blanca 'A' #1 | 7,500 | 21533080 |
| 527502 | Jan 27, 2003 | Jan 27, 2003 | Dewbre Petroleum Corporation | Wilson | Chandler, Fred H. #1 | 8,000 | 49332234 |
| 527418 | Jan 24, 2003 | Jan 24, 2003 | Dewbre Petroleum Corporation | Wharton | Lehrer Sec. 3 #1 | 4,500 | 48134501 |
| 527417 | Jan 24, 2003 | Jan 24, 2003 | Dewbre Petroleum Corporation | Wharton | Lehrer Sec. 18 #2 | 4,500 | 48134502 |
| 526179 | Dec 12, 2002 | Dec 12, 2002 | Dewbre Petroleum Corporation | Refugio | Mayo, Tom #1 | 3,800 | 39132493 |
| 525981 | Dec 9, 2002 | Dec 9, 2002 | Dewbre Petroleum Corporation | Hidalgo | Valderas Gas Unit #1 | 11,200 | 21533048 |
| 524773 | Oct 23, 2002 | Oct 23, 2002 | Dewbre Petroleum Corporation | Starr | Slick Estate '527' #1 | 9,500 | 42733547 |
| 524594 | Oct 15, 2002 | Oct 15, 2002 | Dewbre Petroleum Corporation | Willacy | Stone Gas Unit 'E' #1 | 3,500 | 48931055 |
| 524336 | Oct 14, 2002 | Oct 14, 2002 | Dewbre Petroleum Corporation | Calhoun | Hardie-State Unit #1 | 10,500 | 05731634 |
| 521070 | Jun 24, 2002 | Jun 24, 2002 | Dewbre Petroleum Corporation | Jim Wells | Shaffer #1 | 7,100 | 24932417 |
| 520751 | Jun 13, 2002 | Jun 13, 2002 | Dewbre Petroleum Corporation | Colorado | Lehrer Sec. 4 #1 | 4,500 | 08932324 |
| 520750 | Jun 13, 2002 | Jun 13, 2002 | Dewbre Petroleum Corporation | Wharton | Lehrer Sec. 17 #1 | 4,500 | 48134451 |
| 520749 | Jun 13, 2002 | Jun 13, 2002 | Dewbre Petroleum Corporation | Wharton | Lehrer Sec. 18 #1 | 4,500 | 48134452 |
| 519183 | Apr 18, 2002 | Apr 18, 2002 | Dewbre Petroleum Corporation | Kleberg | East, Allen #A 3 | 3,500 | 27332346 |
| 519183Amendment | Apr 18, 2002 | Apr 18, 2002 | Dewbre Petroleum Corporation | Kleberg | East, Allen #A 3 | 3,500 | 27332346 |
| 518402 | Mar 21, 2002 | Mar 21, 2002 | Dewbre Petroleum Corporation | San Patricio | Painter #1 | 4,200 | 40932696 |
| 518365 | Mar 20, 2002 | Mar 20, 2002 | Dewbre Petroleum Corporation | Kleberg | East, Allen #A 2 | 3,500 | 27332345 |
| 518353 | Mar 20, 2002 | Mar 20, 2002 | Dewbre Petroleum Corporation | Starr | Nimmo Gas Unit #1 #2P | 9,805 | 42731543 |
| 517311 | Feb 6, 2002 | Feb 6, 2002 | Dewbre Petroleum Corporation | Starr | Brannan #4 | 10,200 | 42733452 |
| 518090 | Jan 4, 2002 | Jan 4, 2002 | Dewbre Petroleum Corporation | Wharton | Dorotik A #3C | 12,500 | 48134225 |
| 516188 | Dec 19, 2001 | Dec 19, 2001 | Dewbre Petroleum Corporation | Starr | Don Cameron et al G.U. #5A | 7,900 | 42733025 |
| 515913 | Dec 11, 2001 | Dec 11, 2001 | Dewbre Petroleum Corporation | Nueces | State Tract 433 Gas Unit #1 | 10,100 | 35533437 |
| 515425 | Nov 20, 2001 | Nov 20, 2001 | Dewbre Petroleum Corporation | Willacy | Stone #1 | 10,500 | 48931048 |
| 515370 | Nov 20, 2001 | Nov 20, 2001 | Dewbre Petroleum Corporation | Colorado | Gracey #1 | 10,000 | 08932309 |
| 514802 | Oct 31, 2001 | Oct 31, 2001 | Dewbre Petroleum Corporation | Hidalgo | Lockhart Gas Unit #7 | 9,200 | 21532942 |
| 512888 | Aug 24, 2001 | Aug 24, 2001 | Dewbre Petroleum Corporation | Starr | Brannan #3 | 10,200 | 42733403 |
| 512096 | Aug 1, 2001 | Aug 1, 2001 | Dewbre Petroleum Corporation | Wharton | Schumaker Gas Unit #3 | 13,500 | 48134397 |
| 511059 | Jul 19, 2001 | Jul 19, 2001 | Dewbre Petroleum Corporation | Calhoun | State Tract 45 #1 | 9,000 | 05701177 |
| 510738 | Jun 26, 2001 | Jun 26, 2001 | Dewbre Petroleum Corporation | Wharton | Miller, Ilse #1 | 3,100 | 48134387 |
| 509820 | Jun 5, 2001 | Jun 5, 2001 | Dewbre Petroleum Corporation | Starr | Don Cameron et al G. U. #7A | 10,500 | 42733378 |
| 508433 | May 2, 2001 | May 2, 2001 | Dewbre Petroleum Corporation | Hidalgo | Malone Gas Unit #3 | 9,000 | 21532890 |
| 506977 | Mar 28, 2001 | Mar 28, 2001 | Dewbre Petroleum Corporation | Wharton | Dorotik #1 | 14,500 | 48133666 |
| 505142 | Mar 9, 2001 | Mar 9, 2001 | Dewbre Petroleum Corporation | Refugio | O'Connor, Thomas #7 | 4,500 | 39131731 |
| 505787 | Mar 1, 2001 | Mar 1, 2001 | Dewbre Petroleum Corporation | Duval | Dcrc Section 274 #1 | 2,000 | 13138492 |
| 505746 | Mar 1, 2001 | Mar 1, 2001 | Dewbre Petroleum Corporation | Hidalgo | Beaurline, A. W. #6 | 7,500 | 21532452 |
| 505656 | Feb 28, 2001 | Feb 28, 2001 | Dewbre Petroleum Corporation | Victoria | Wofford Gas Unit #1 | 11,500 | 46933567 |
| 505545 | Feb 23, 2001 | Feb 23, 2001 | Dewbre Petroleum Corporation | Hidalgo | McDavitt Gas Unit #1 | 9,000 | 21532862 |
| 505545Amendment | Feb 23, 2001 | Feb 23, 2001 | Dewbre Petroleum Corporation | Hidalgo | McDavitt Gas Unit #1 | 9,000 | 21532862 |
| 503784 | Jan 8, 2001 | Jan 8, 2001 | Dewbre Petroleum Corporation | Wharton | Pryor Trust #B 1 | 8,000 | 48134306 |
| 503784Amendment | Jan 8, 2001 | Jan 8, 2001 | Dewbre Petroleum Corporation | Wharton | Pryor Trust #B 1 | 8,000 | 48134306 |
| 503427 | Dec 29, 2000 | Dec 29, 2000 | Dewbre Petroleum Corporation | Wharton | Pryor Trust #A 1 | 11,200 | 48134299 |
| 503427Amendment | Dec 29, 2000 | Dec 29, 2000 | Dewbre Petroleum Corporation | Wharton | Pryor Trust #A 1 | 11,200 | 48134299 |
| 502340 | Dec 6, 2000 | Dec 6, 2000 | Dewbre Petroleum Corporation | Wharton | Dorotik 'A' #2 | 13,100 | 48133704 |
| 502183 | Nov 22, 2000 | Nov 22, 2000 | Dewbre Petroleum Corporation | Hidalgo | Boyce Gas Unit #1 | 8,400 | 21532549 |
| 502182 | Nov 22, 2000 | Nov 22, 2000 | Dewbre Petroleum Corporation | Starr | Cameron Gas Unit #1 | 8,080 | 42701356 |
| 501531 | Nov 6, 2000 | Nov 6, 2000 | Dewbre Petroleum Corporation | Hidalgo | Boyce Gas Unit #2 | 7,750 | 21532823 |
| 500550Amendment | Oct 9, 2000 | Oct 9, 2000 | Dewbre Petroleum Corporation | Colorado | Lehrer Sec. 26 #1 | 3,267 | 08932249 |
| 500550Amendment | Oct 9, 2000 | Oct 9, 2000 | Dewbre Petroleum Corporation | Colorado | Lehrer Sec 26 #1 | 6,500 | 08932249 |
| 499254 | Sep 12, 2000 | Sep 12, 2000 | Dewbre Petroleum Corporation | Duval | Wernecke, E. D. #3 | 10,500 | 13138439 |
| 498794 | Aug 25, 2000 | Aug 25, 2000 | Dewbre Petroleum Corporation | Wharton | Lehrer #1 | 6,400 | 48134101 |
| 496147 | Jun 15, 2000 | Jun 15, 2000 | Dewbre Petroleum Corporation | Wharton | Dorotik "A" #3 | 12,500 | 48134225 |
| 495152 | May 23, 2000 | May 23, 2000 | Dewbre Petroleum Corporation | Duval | Hoffman #1 | 6,800 | 13138408 |
| 495068 | May 19, 2000 | May 19, 2000 | Dewbre Petroleum Corporation | Starr | Brannan #2 | 10,200 | 42733231 |
| 494792 | May 12, 2000 | May 12, 2000 | Dewbre Petroleum Corporation | Duval | D. C. R. C. #4207 | 2,300 | 13138399 |
| 491207 | Jan 25, 2000 | Jan 25, 2000 | Dewbre Petroleum Corporation | Karnes | Red Crest Trust #1 | 4,100 | 25531411 |
| 487230 | Sep 30, 1999 | Sep 30, 1999 | Dewbre Petroleum Corporation | Refugio | O'Brien, J. M. 'A' #G 3 | 4,200 | 39103799 |
| 487520 | Sep 17, 1999 | Sep 17, 1999 | Dewbre Petroleum Corporation | Hidalgo | Harris Gas Unit #5 | 10,500 | 21532681 |
| 487002 | Aug 31, 1999 | Aug 31, 1999 | Dewbre Petroleum Corporation | Hidalgo | Lockhart Gas Unit #6 | 9,200 | 21532675 |
| 486260 | Jul 29, 1999 | Jul 29, 1999 | Dewbre Petroleum Corporation | Victoria | Nickel #1 | 11,600 | 46933421 |
| 486147 | Jul 27, 1999 | Jul 27, 1999 | Dewbre Petroleum Corporation | Hidalgo | Bell #1 | 11,000 | 21532665 |
| 483657 | Apr 14, 1999 | Apr 14, 1999 | Dewbre Petroleum Corporation | Karnes | E. Johnson Gas Unit 1-E #1H | 13,518 | 25531081 |
| 483716 | Apr 9, 1999 | Apr 9, 1999 | Dewbre Petroleum Corporation | Hidalgo | Schwarz #1 | 9,000 | 21532636 |
| 480915 | Dec 16, 1998 | Dec 16, 1998 | Dewbre Petroleum Corporation | Refugio | O'Brien, J. M. 'A' #10 | 2,990 | 39103798 |
| 480914 | Nov 23, 1998 | Nov 23, 1998 | Dewbre Petroleum Corporation | Live Oak | Hinton #2 | 7,750 | 29734344 |
| 480625 | Nov 20, 1998 | Nov 20, 1998 | Dewbre Petroleum Corporation | Hidalgo | Lockhart Gas Unit #5 | 9,200 | 21532598 |
| 480126 | Oct 16, 1998 | Oct 16, 1998 | Dewbre Petroleum Corporation | Live Oak | Young #1 | 4,650 | 29734340 |
| 480126Amendment | Oct 16, 1998 | Oct 16, 1998 | Dewbre Petroleum Corporation | Live Oak | Young #1 | 4,650 | 29734340 |
| 478789 | Aug 31, 1998 | Aug 31, 1998 | Dewbre Petroleum Corporation | Karnes | R. Ruhman Gas Unit 2-E #1H | 13,598 | 25531094 |
| 477531 | Jul 1, 1998 | Jul 1, 1998 | Dewbre Petroleum Corporation | Jim Hogg | Holbein 'A' #1 | 5,700 | 24732114 |
| 476464 | May 20, 1998 | May 20, 1998 | Dewbre Petroleum Corporation | Hidalgo | Boyce Gas Unit #1 | 8,400 | 21532549 |
| 466723 | Nov 12, 1997 | Nov 12, 1997 | Dewbre Petroleum Corporation | Bee | Culli-McKay #2 | 3,825 | 02501638 |
| 469591 | Nov 6, 1997 | Nov 6, 1997 | Dewbre Petroleum Corporation | Hidalgo | River Farms #1 | 9,000 | 21532482 |
| 469277 | Nov 3, 1997 | Nov 3, 1997 | Dewbre Petroleum Corporation | Duval | Duval County Ranch Co State "L" #45 | 1,500 | 13138221 |
| 469091 | Oct 30, 1997 | Oct 30, 1997 | Dewbre Petroleum Corporation | Live Oak | Grant Ranch #1 | 4,600 | 29734285 |
| 466340 | Aug 20, 1997 | Aug 20, 1997 | Dewbre Petroleum Corporation | Atascosa | Mutz #2 | 2,000 | 01334099 |
| 464144 | Jul 22, 1997 | Jul 22, 1997 | Dewbre Petroleum Corporation | Duval | Duval County Ranch Co State 'F' #8 | 1,434 | 13106328 |
| 463671 | Jun 23, 1997 | Jun 23, 1997 | Dewbre Petroleum Corporation | Hidalgo | Rio Grande Bible Institute Unit #2 | 12,000 | 21532438 |
| 463671Amendment | Jun 23, 1997 | Jun 23, 1997 | Dewbre Petroleum Corporation | Hidalgo | Rio Grande Bible Institute Unit #2 | 12,000 | 21532438 |
| 463669 | Jun 20, 1997 | Jun 20, 1997 | Dewbre Petroleum Corporation | Atascosa | Mutz #1 | 2,000 | 01334095 |
| 462524 | May 21, 1997 | May 21, 1997 | Dewbre Petroleum Corporation | Karnes | Kainer #2 | 13,820 | 25500105 |
| 461548 | Apr 28, 1997 | Apr 28, 1997 | Dewbre Petroleum Corporation | Duval | Duval County Ranch Co. 'T' #21 | 2,300 | 13138165 |
| 460713 | Apr 10, 1997 | Apr 10, 1997 | Dewbre Petroleum Corporation | Duval | Duval County Ranch Co. State "F" #21 | 3,500 | 13138182 |
| 460713Amendment | Apr 10, 1997 | Apr 10, 1997 | Dewbre Petroleum Corporation | Duval | Duval County Ranch Co. State "F" #21 | 3,500 | 13138182 |
| 458380 | Feb 13, 1997 | Feb 13, 1997 | Dewbre Petroleum Corporation | Bee | Culli-McKay #1 | 3,800 | 02532809 |