| 501932 | Jul 31, 2001 | Jul 31, 2001 | Mueller Engineering Corp. | Live Oak | Block 71 #1 | 7,905 | 29700641 |
| 502043 | Dec 6, 2000 | Dec 6, 2000 | Mueller Engineering Corp. | Webb | V. L. Puig Gas Unit 2 #7 | 8,005 | 47935912 |
| 493378 | Mar 30, 2000 | Mar 30, 2000 | Mueller Engineering Corp. | Hidalgo | Garcia, J. A. et Al #2 | 7,236 | 21531378 |
| 489721 | Nov 30, 1999 | Nov 30, 1999 | Mueller Engineering Corp. | Hidalgo | Garcia, J. A. et Al #6 | 5,500 | 21532713 |
| 485714 | Jul 16, 1999 | Jul 16, 1999 | Mueller Engineering Corp. | Hidalgo | Garcia, J. A. et Al #5 | 5,606 | 21532242 |
| 485714Amendment | Jul 16, 1999 | Jul 16, 1999 | Mueller Engineering Corp. | Hidalgo | Garcia, J. A. et Al #5 | 5,606 | 21532242 |
| 479045 | Aug 28, 1998 | Aug 28, 1998 | Mueller Engineering Corp. | Starr | Slick Estate #4 | 3,600 | 42733128 |
| 479045Amendment | Aug 28, 1998 | Aug 28, 1998 | Mueller Engineering Corp. | Starr | Slick Estate #4 | 3,600 | 42733128 |
| 478130 | Jul 27, 1998 | Jul 27, 1998 | Mueller Engineering Corp. | San Patricio | J. R. Kirk GU #7 | 3,790 | 40903231 |
| 477693 | Jul 7, 1998 | Jul 7, 1998 | Mueller Engineering Corp. | Cameron | Conoco Fee #1B | 5,000 | 06130504 |
| 471839 | Jan 6, 1998 | Jan 6, 1998 | Mueller Engineering Corp. | Hidalgo | Garcia, J. A. #1 | 5,380 | 21531184 |
| 471259 | Dec 22, 1997 | Dec 22, 1997 | Mueller Engineering Corp. | Lavaca | Manning Gas Unit #1 #1 | 2,869 | 28532378 |
| 467802 | Oct 13, 1997 | Oct 13, 1997 | Mueller Engineering Corp. | Lavaca | Victoria Bank & Trust Unit #1 | 5,400 | 28532536 |
| 467299 | Sep 15, 1997 | Sep 15, 1997 | Mueller Engineering Corp. | Willacy | Armendaiz et Al #3 | 2,596 | 48930036 |
| 464401 | Jul 3, 1997 | Jul 3, 1997 | Mueller Engineering Corp. | Bee | Barrow, Laura T. "B"-88 #32 | 5,600 | 02532832 |
| 464118 | Jun 24, 1997 | Jun 24, 1997 | Mueller Engineering Corp. | Starr | Morse Forster Oil Unit #1 | 5,690 | 42730630 |
| 461950 | May 7, 1997 | May 7, 1997 | Mueller Engineering Corp. | Lavaca | Douglas Manning Gas Unit 4 #1 | 5,800 | 28532482 |
| 461256 | Apr 29, 1997 | Apr 29, 1997 | Mueller Engineering Corp. | Lavaca | Douglas Manning Gas Unit 3 #1 | 5,800 | 28532476 |
| 461256Amendment | Apr 29, 1997 | Apr 29, 1997 | Mueller Engineering Corp. | Lavaca | Manning Unit #3 #1 | 5,800 | 28532476 |
| 457431 | Jan 22, 1997 | Jan 22, 1997 | Mueller Engineering Corp. | Starr | Greiner Estate #3 | 3,785 | 42732524 |
| 455809 | Dec 3, 1996 | Dec 3, 1996 | Mueller Engineering Corp. | Matagorda | Northern Ranch #8L | 6,680 | 32102614 |
| 454575 | Nov 7, 1996 | Nov 7, 1996 | Mueller Engineering Corp. | Lavaca | Bozka, Ruby #1 | 5,600 | 28532421 |
| 454575Amendment | Nov 7, 1996 | Nov 7, 1996 | Mueller Engineering Corp. | Lavaca | Bozka, William D. #1 | 5,600 | 28532421 |
| 451653 | Aug 26, 1996 | Aug 26, 1996 | Mueller Engineering Corp. | Lavaca | Haidusek, C. #1 | 5,600 | 28532397 |
| 451652 | Aug 26, 1996 | Aug 26, 1996 | Mueller Engineering Corp. | Lavaca | Haidusek, C. #2 | 5,600 | 28532398 |
| 449654 | Jul 2, 1996 | Jul 2, 1996 | Mueller Engineering Corp. | Willacy | Armendaiz "B" #2 | 2,710 | 48930074 |
| 448938 | Jun 20, 1996 | Jun 20, 1996 | Mueller Engineering Corp. | Matagorda | Northern Ranch #9 | 6,780 | 32102757 |
| 449376 | Jun 19, 1996 | Jun 19, 1996 | Mueller Engineering Corp. | Smith | Sanford, Emma #1L | 4,000 | 42331467 |
| 449376Amendment | Jun 19, 1996 | Jun 19, 1996 | Mueller Engineering Corp. | Smith | Sanford, Emma #1 | 4,000 | 42331467 |
| 449376Amendment | Jun 19, 1996 | Jun 19, 1996 | Mueller Engineering Corp. | Smith | Sanford, Emma #1L | 4,000 | 42331467 |
| 448303 | May 29, 1996 | May 29, 1996 | Mueller Engineering Corp. | Young | Atwood Unit #1 | 3,100 | 50340754 |
| 447598 | May 1, 1996 | May 1, 1996 | Mueller Engineering Corp. | Lavaca | Manning Gas Unit #1 #1 | 3,000 | 28532378 |
| 447596 | May 1, 1996 | May 1, 1996 | Mueller Engineering Corp. | Lavaca | Manning Gas Unit #2 #1 | 3,000 | 28532377 |
| 441784 | Nov 14, 1995 | Nov 14, 1995 | Mueller Engineering Corp. | Bee | Roberts #1 | 5,000 | 02532748 |
| 441784Amendment | Nov 14, 1995 | Nov 14, 1995 | Mueller Engineering Corp. | Bee | Roberts #1 | 5,000 | 02532748 |
| 440398 | Oct 5, 1995 | Oct 5, 1995 | Mueller Engineering Corp. | Matagorda | Northern Ranch #6 | 7,080 | 32100022 |
| 440064 | Sep 27, 1995 | Sep 27, 1995 | Mueller Engineering Corp. | Webb | V. L. Puig Gas Unit 2 #7 | 9,550 | 47935912 |
| 437488 | Jul 7, 1995 | Jul 7, 1995 | Mueller Engineering Corp. | Hidalgo | Garcia, J.A. et Al #5 | 5,800 | 21532242 |
| 434892 | Apr 17, 1995 | Apr 17, 1995 | Mueller Engineering Corp. | Willacy | Armendaiz, et Al #4 | 2,810 | 48930051 |
| 431303 | Dec 29, 1994 | Dec 29, 1994 | Mueller Engineering Corp. | Willacy | Armendaiz, et Al #5 | 2,900 | 48930054 |
| 431308 | Dec 28, 1994 | Dec 28, 1994 | Mueller Engineering Corp. | Hidalgo | Garcia, J. A. #1 | 5,980 | 21531184 |
| 430916 | Dec 13, 1994 | Dec 13, 1994 | Mueller Engineering Corp. | Lavaca | McCrumb, Martha #1 | 3,500 | 28532279 |
| 430387 | Dec 1, 1994 | Dec 1, 1994 | Mueller Engineering Corp. | Lavaca | Fischner, B. John #2 | 3,000 | 28532277 |
| 428745 | Oct 5, 1994 | Oct 5, 1994 | Mueller Engineering Corp. | Duval | Marshall, S. G. Jr. State #1 | 3,200 | 13137977 |
| 426622 | Aug 9, 1994 | Aug 9, 1994 | Mueller Engineering Corp. | Lavaca | Fischner, B. John #1 | 9,800 | 28532257 |
| 426689 | Aug 8, 1994 | Aug 8, 1994 | Mueller Engineering Corp. | Lavaca | Matula, Mary Estate et Al #1 | 3,000 | 28532258 |
| 426218 | Aug 4, 1994 | Aug 4, 1994 | Mueller Engineering Corp. | Willacy | Armendaiz et Al #3 | 2,764 | 48930036 |
| 425037 | Jul 11, 1994 | Jul 11, 1994 | Mueller Engineering Corp. | Webb | Puig Gas Unit 2 #4 | 9,456 | 47933687 |
| 425037Amendment | Jul 11, 1994 | Jul 11, 1994 | Mueller Engineering Corp. | Webb | Puig Gas Unit 2 #4 | 8,400 | 47933687 |
| 423105 | Apr 25, 1994 | Apr 25, 1994 | Mueller Engineering Corp. | Willacy | Armendaiz, et Al #3 | 4,115 | 48930036 |
| 420036 | Feb 2, 1994 | Feb 2, 1994 | Mueller Engineering Corp. | Refugio | Shay, Mary A. #6 | 5,517 | 39130333 |
| 417885 | Nov 8, 1993 | Nov 8, 1993 | Mueller Engineering Corp. | Goliad | Abrameit-Vincik #2 | 3,810 | 17532318 |
| 417557 | Oct 28, 1993 | Oct 28, 1993 | Mueller Engineering Corp. | Goliad | Preiss, Arlis #2 | 3,600 | 17532643 |
| 415432 | Sep 16, 1993 | Sep 16, 1993 | Mueller Engineering Corp. | Webb | V.L. Puig Gas Unit #2 #7 | 9,900 | 47935912 |
| 415432Amendment | Sep 16, 1993 | Sep 16, 1993 | Mueller Engineering Corp. | Webb | V.L. Puig Gas Unit #2 #7 | 10,500 | 47935912 |
| 410659 | Apr 13, 1993 | Apr 13, 1993 | Mueller Engineering Corp. | Starr | Greiner #2 | 6,500 | 42732165 |
| 407849 | Dec 31, 1992 | Dec 31, 1992 | Mueller Engineering Corp. | Jim Wells | Garcia, J. #1 | 8,250 | 24931686 |
| 404914 | Oct 22, 1992 | Oct 22, 1992 | Mueller Engineering Corp. | Duval | Carrl #4A | 6,400 | 13136722 |
| 404473 | Oct 19, 1992 | Oct 19, 1992 | Mueller Engineering Corp. | Starr | Cardenas, R.R. #4 | 6,000 | 42731769 |
| 403727 | Oct 9, 1992 | Oct 9, 1992 | Mueller Engineering Corp. | Bee | Barrow, Laura T. #B 4 | 5,934 | 02530245 |
| 403391 | Sep 28, 1992 | Sep 28, 1992 | Mueller Engineering Corp. | Willacy | Armendaiz "B" #2 | 3,120 | 48930074 |
| 403776 | Sep 25, 1992 | Sep 25, 1992 | Mueller Engineering Corp. | Victoria | Binz Gas Unit #1 | 12,000 | 46932931 |
| 401224 | Jul 23, 1992 | Jul 23, 1992 | Mueller Engineering Corp. | Goliad | Hartman, R. C. #2 A | 4,000 | 17532658 |
| 400803 | Jul 6, 1992 | Jul 6, 1992 | Mueller Engineering Corp. | Starr | Greiner #3 | 6,150 | 42732524 |
| 400799 | Jul 6, 1992 | Jul 6, 1992 | Mueller Engineering Corp. | Starr | Slick Estate #3 | 6,150 | 42732525 |
| 400799Amendment | Jul 6, 1992 | Jul 6, 1992 | Mueller Engineering Corp. | Starr | Slick Estate #3 | 6,150 | 42732525 |
| 400721 | Jul 3, 1992 | Jul 3, 1992 | Mueller Engineering Corp. | Willacy | Armendiaz, et al "B" #1 | 4,063 | 48930065 |
| 400720 | Jul 3, 1992 | Jul 3, 1992 | Mueller Engineering Corp. | Willacy | Armendaiz, et Al #3 | 4,115 | 48930036 |
| 400103 | Jun 15, 1992 | Jun 15, 1992 | Mueller Engineering Corp. | Willacy | Armendaiz, et Al #5 | 3,120 | 48930054 |
| 398206 | Apr 13, 1992 | Apr 13, 1992 | Mueller Engineering Corp. | Bee | Thomson, Laura "B" #24 | 2,000 | 02532634 |
| 395877 | Jan 29, 1992 | Jan 29, 1992 | Mueller Engineering Corp. | Goliad | Priess, A. #1 | 4,000 | 17532643 |
| 395015 | Dec 19, 1991 | Dec 19, 1991 | Mueller Engineering Corp. | Starr | Slick Estate #2 | 6,190 | 42732221 |
| 393076 | Oct 25, 1991 | Oct 25, 1991 | Mueller Engineering Corp. | Bee | Thomson, Laura "B" #24 | 3,000 | 02532634 |
| 392862 | Oct 17, 1991 | Oct 17, 1991 | Mueller Engineering Corp. | Zapata | Gutierrez, Jose Maria #2 | 7,000 | 50532836 |
| 390232 | Jul 30, 1991 | Jul 30, 1991 | Mueller Engineering Corp. | Zapata | Gutierrez, Jose Maria #1 | 6,500 | 50532813 |
| 387734 | May 14, 1991 | May 14, 1991 | Mueller Engineering Corp. | Zapata | Dominguez et Al #2 | 6,500 | 50532792 |
| 386606 | Apr 15, 1991 | Apr 15, 1991 | Mueller Engineering Corp. | Bee | Thomson, Laura B. "B" #2 | 5,200 | 02501537 |
| 382987 | Jan 7, 1991 | Jan 7, 1991 | Mueller Engineering Corp. | Zapata | Dominguez et Al #1 | 6,500 | 50532747 |
| 379116 | Oct 12, 1990 | Oct 12, 1990 | Mueller Engineering Corp. | La Salle | South Texas Syndicate #8042 | 5,300 | 28331371 |
| 377135 | Aug 29, 1990 | Aug 29, 1990 | Mueller Engineering Corp. | Bee | Thomson, Laura D. "B" #3 | 4,500 | 02501538 |
| 375396 | Jul 13, 1990 | Jul 13, 1990 | Mueller Engineering Corp. | Bee | Barrow, Laura T. "B" #5 | 5,600 | 02501567 |
| 374106 | Jun 7, 1990 | Jun 7, 1990 | Mueller Engineering Corp. | Kerr | Crenwelge-Metting Unit #1 | 1,400 | 26530112 |
| 370157 | Feb 23, 1990 | Feb 23, 1990 | Mueller Engineering Corp. | Duval | De Barrera, Josefa S. #2 | 3,150 | 13137324 |
| 365499 | Oct 24, 1989 | Oct 24, 1989 | Mueller Engineering Corp. | San Patricio | Dewitt, Ernestine C. #1 | 6,900 | 40932317 |
| 364687 | Oct 4, 1989 | Oct 4, 1989 | Mueller Engineering Corp. | Bee | Barrow, Laura T. "B" #8 | 5,630 | 02501561 |
| 357081 | Mar 24, 1989 | Mar 24, 1989 | Mueller Engineering Corp. | Starr | Howell, J. J. #1 | 6,986 | 42701321 |
| 356871 | Mar 13, 1989 | Mar 13, 1989 | Mueller Engineering Corp. | Starr | Davenport-State 530 #1 | 7,000 | 42732326 |
| 354412 | Dec 20, 1988 | Dec 20, 1988 | Mueller Engineering Corp. | Goliad | Eula Pfenninger Unit #1 | 3,600 | 17532358 |
| 354412Amendment | Dec 20, 1988 | Dec 20, 1988 | Mueller Engineering Corp. | Goliad | Eula Pfenninger Unit #1 | 3,800 | 17532358 |
| 352709 | Oct 26, 1988 | Oct 26, 1988 | Mueller Engineering Corp. | Victoria | Gibbs Unit #1 | 3,250 | 46932632 |
| 352543 | Oct 24, 1988 | Oct 24, 1988 | Mueller Engineering Corp. | Bee | Barrow, Laura T. "B" #31 | 5,550 | 02532499 |
| 352542 | Oct 24, 1988 | Oct 24, 1988 | Mueller Engineering Corp. | Bee | Thomson, Laura D. "B" #23 | 2,850 | 02532498 |
| 352402 | Oct 20, 1988 | Oct 20, 1988 | Mueller Engineering Corp. | Goliad | Hall Unit #1 | 2,800 | 17532343 |
| 351195 | Sep 14, 1988 | Sep 14, 1988 | Mueller Engineering Corp. | Victoria | Edwin L. Byrne Unit #1 | 3,600 | 46932625 |
| 350425 | Aug 30, 1988 | Aug 30, 1988 | Mueller Engineering Corp. | Starr | Cameron State Unit #1 | 7,400 | 42732289 |
| 350531 | Aug 26, 1988 | Aug 26, 1988 | Mueller Engineering Corp. | Colorado | Celestina Ammann Gas Unit #1 | 3,000 | 08931744 |
| 347785 | Jun 17, 1988 | Jun 17, 1988 | Mueller Engineering Corp. | Wharton | Pryor Trust #1R | 7,850 | 48132798 |
| 347606 | Jun 14, 1988 | Jun 14, 1988 | Mueller Engineering Corp. | Starr | Garcia, M. M. #1 | 6,250 | 42732272 |
| 346853 | May 25, 1988 | May 25, 1988 | Mueller Engineering Corp. | Goliad | Jacobs, Myrtle #1 | 3,400 | 17532310 |
| 344154 | Mar 23, 1988 | Mar 23, 1988 | Mueller Engineering Corp. | Colorado | Ammann, Everrett #1 | 4,500 | 08931728 |