| 486214 | Jul 28, 1999 | Jul 28, 1999 | Waters Eng. & Operating, Inc. | Cameron | Garcia, J. A. "A" #4 | 8,800 | 06130510 |
| 485330 | Jun 21, 1999 | Jun 21, 1999 | Waters Eng. & Operating, Inc. | Hidalgo | Engleman 'A' #14 | 3,100 | 21532652 |
| 483511 | Mar 26, 1999 | Mar 26, 1999 | Waters Eng. & Operating, Inc. | Cameron | State Tract 726 #1 | 8,910 | 06130500 |
| 479509 | Sep 17, 1998 | Sep 17, 1998 | Waters Eng. & Operating, Inc. | Cameron | Champion Alt G.U. #1 | 10,000 | 06130507 |
| 479508 | Sep 17, 1998 | Sep 17, 1998 | Waters Eng. & Operating, Inc. | Cameron | Garcia, J. A. "A" #3 | 6,660 | 06130046 |
| 478560 | Aug 7, 1998 | Aug 7, 1998 | Waters Eng. & Operating, Inc. | Cameron | B. N. D. #1 | 6,500 | 06130506 |
| 476816 | Jun 5, 1998 | Jun 5, 1998 | Waters Eng. & Operating, Inc. | Nueces | Peterson #1 | 10,700 | 35533075 |
| 476816Amendment | Jun 5, 1998 | Jun 5, 1998 | Waters Eng. & Operating, Inc. | Nueces | Peterson #1 | 10,600 | 35533075 |
| 471633 | Dec 29, 1997 | Dec 29, 1997 | Waters Eng. & Operating, Inc. | Hidalgo | Bell - State Tract 10 #1 | 4,700 | 21532497 |
| 469943 | Nov 12, 1997 | Nov 12, 1997 | Waters Eng. & Operating, Inc. | Hidalgo | Doffing #1 | 8,500 | 21532487 |
| 464806 | Jul 14, 1997 | Jul 14, 1997 | Waters Eng. & Operating, Inc. | Fort Bend | Freudensprung #3 | 12,700 | 15731989 |
| 463041 | May 29, 1997 | May 29, 1997 | Waters Eng. & Operating, Inc. | De Witt | Taff #1 | 3,800 | 12331800 |
| 463041Amendment | May 29, 1997 | May 29, 1997 | Waters Eng. & Operating, Inc. | De Witt | Taff #1 | 3,800 | 12331800 |
| 461059 | Apr 14, 1997 | Apr 14, 1997 | Waters Eng. & Operating, Inc. | Nueces | Peterson #1 | 10,600 | 35533075 |
| 461059Amendment | Apr 14, 1997 | Apr 14, 1997 | Waters Eng. & Operating, Inc. | Nueces | Peterson #1 | 10,600 | 35533075 |
| 471981 | Jan 8, 1997 | Jan 8, 1997 | Waters Eng. & Operating, Inc. | Nueces | Lehman #2C | 7,200 | 35533107 |
| 456851 | Jan 6, 1997 | Jan 6, 1997 | Waters Eng. & Operating, Inc. | Jackson | Hartfiel #1 | 6,200 | 23932931 |
| 455892 | Dec 4, 1996 | Dec 4, 1996 | Waters Eng. & Operating, Inc. | San Patricio | Maryland Trust #1 | 7,700 | 40932510 |
| 455552 | Nov 25, 1996 | Nov 25, 1996 | Waters Eng. & Operating, Inc. | Webb | Notzon, Nora Lee #1 | 7,000 | 47936595 |
| 455552Amendment | Nov 25, 1996 | Nov 25, 1996 | Waters Eng. & Operating, Inc. | Webb | Notzon, Nora Lee #1 | 8,787 | 47936595 |
| 445835Amendment | Mar 12, 1996 | Mar 12, 1996 | Waters Eng. & Operating, Inc. | Nueces | Lehman "A" #1 | 6,500 | 35533027 |
| 445835Amendment | Mar 12, 1996 | Mar 12, 1996 | Waters Eng. & Operating, Inc. | Nueces | Lehman "A" #1 | 6,310 | 35533027 |
| 443990 | Jan 23, 1996 | Jan 23, 1996 | Waters Eng. & Operating, Inc. | Nueces | Ayers Unit #1 | 7,200 | 35531189 |
| 443868 | Jan 19, 1996 | Jan 19, 1996 | Waters Eng. & Operating, Inc. | Atascosa | Sarah E. Ferry Unit "11" #2 | 8,000 | 01334039 |
| 441576 | Nov 6, 1995 | Nov 6, 1995 | Waters Eng. & Operating, Inc. | La Salle | North Cotulla #1 | 5,550 | 28331587 |
| 441108 | Oct 20, 1995 | Oct 20, 1995 | Waters Eng. & Operating, Inc. | Bee | Boemer #1 | 2,500 | 02532746 |
| 439883 | Sep 14, 1995 | Sep 14, 1995 | Waters Eng. & Operating, Inc. | Bee | Ball #1 | 2,500 | 02532741 |
| 438863 | Aug 16, 1995 | Aug 16, 1995 | Waters Eng. & Operating, Inc. | Bee | Borchers #1 | 2,500 | 02532736 |
| 438821 | Aug 11, 1995 | Aug 11, 1995 | Waters Eng. & Operating, Inc. | Nueces | Gabriel #1 | 7,250 | 35533009 |
| 436973 | Jun 16, 1995 | Jun 16, 1995 | Waters Eng. & Operating, Inc. | La Salle | Cotulla Airport #01 | 6,500 | 28331572 |
| 435196 | Apr 25, 1995 | Apr 25, 1995 | Waters Eng. & Operating, Inc. | Atascosa | Sarah E. Ferry Unit "13" #3 | 8,800 | 01334038 |
| 435195 | Apr 25, 1995 | Apr 25, 1995 | Waters Eng. & Operating, Inc. | Atascosa | Sarah E. Ferry Unit "11" #2 | 8,800 | 01334039 |
| 433207 | Feb 23, 1995 | Feb 23, 1995 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #7 | 2,000 | 13138019 |
| 432187 | Jan 24, 1995 | Jan 24, 1995 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #6 | 2,000 | 13138011 |
| 431236 | Dec 22, 1994 | Dec 22, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #5 | 2,000 | 13138004 |
| 431236Amendment | Dec 22, 1994 | Dec 22, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #5 | 2,000 | 13138004 |
| 430151 | Nov 17, 1994 | Nov 17, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #4 | 2,200 | 13137996 |
| 430151Amendment | Nov 17, 1994 | Nov 17, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #4 | 2,200 | 13137996 |
| 429948 | Nov 14, 1994 | Nov 14, 1994 | Waters Eng. & Operating, Inc. | La Salle | Mustang Creek #1 | 6,500 | 28331565 |
| 429404 | Nov 1, 1994 | Nov 1, 1994 | Waters Eng. & Operating, Inc. | Atascosa | Sarah E. Ferry Unit #1 | 9,000 | 01334033 |
| 429261 | Oct 20, 1994 | Oct 20, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #3 | 2,250 | 13137984 |
| 429131 | Oct 20, 1994 | Oct 20, 1994 | Waters Eng. & Operating, Inc. | Victoria | Braman, D.H. Jr, et Al #2 | 6,450 | 46932929 |
| 424442 | Jun 2, 1994 | Jun 2, 1994 | Waters Eng. & Operating, Inc. | Hidalgo | Bell, W.G. Jr., et Al #1 | 5,225 | 21532054 |
| 423087 | Apr 18, 1994 | Apr 18, 1994 | Waters Eng. & Operating, Inc. | Nueces | Berry - Swearingen Unit #1 | 9,000 | 35532963 |
| 422967 | Apr 18, 1994 | Apr 18, 1994 | Linder Oil Company,a Partnership | Starr | Garcia - Gonzales Gas Unit #1 | 5,800 | 42732674 |
| 422930 | Apr 12, 1994 | Apr 12, 1994 | Waters Eng. & Operating, Inc. | Duval | FNB - North #3 | 2,250 | 13137935 |
| 422124 | Mar 21, 1994 | Mar 21, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #2 | 2,250 | 13137928 |
| 422124Amendment | Mar 21, 1994 | Mar 21, 1994 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #2 | 2,250 | 13137928 |
| 421690 | Mar 3, 1994 | Mar 3, 1994 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr., et Al #2 | 6,750 | 46932929 |
| 421403 | Feb 23, 1994 | Feb 23, 1994 | Waters Eng. & Operating, Inc. | Duval | FNB-North #2R | 2,250 | 13137915 |
| 421298 | Feb 18, 1994 | Feb 18, 1994 | Waters Eng. & Operating, Inc. | Duval | FNB - North #2 | 2,250 | 13137913 |
| 420033 | Jan 11, 1994 | Jan 11, 1994 | Waters Eng. & Operating, Inc. | Starr | Guerra, R. R. #1 | 3,360 | 42732493 |
| 419938 | Jan 6, 1994 | Jan 6, 1994 | Waters Eng. & Operating, Inc. | Duval | F.N.B. - North #1 | 2,000 | 13137882 |
| 418066 | Nov 10, 1993 | Nov 10, 1993 | Waters Eng. & Operating, Inc. | Duval | F.N.B. #1A | 2,750 | 13137791 |
| 415803 | Sep 8, 1993 | Sep 8, 1993 | Waters Eng. & Operating, Inc. | Jim Hogg | East, T.T. #1 | 5,950 | 24732014 |
| 415214 | Aug 23, 1993 | Aug 23, 1993 | Waters Eng. & Operating, Inc. | Starr | Guerra, R. R. #2 | 4,100 | 42732611 |
| 415058 | Aug 18, 1993 | Aug 18, 1993 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr. et Al #3 | 6,900 | 46932985 |
| 413900 | Jul 30, 1993 | Jul 30, 1993 | Waters Eng. & Operating, Inc. | Nueces | V.W. McKinney Estate Unit #1 | 7,000 | 35532906 |
| 410687 | Jun 7, 1993 | Jun 7, 1993 | Waters Eng. & Operating, Inc. | Hidalgo | Martin, H.L. #2U | 6,925 | 21530376 |
| 411041 | Apr 26, 1993 | Apr 26, 1993 | Waters Eng. & Operating, Inc. | Duval | Peters-Kickapoo #1 | 2,800 | 13137698 |
| 411041Amendment | Apr 26, 1993 | Apr 26, 1993 | Waters Eng. & Operating, Inc. | Duval | Peters-Kickapoo #1 | 2,800 | 13137698 |
| 410964 | Apr 22, 1993 | Apr 22, 1993 | Waters Eng. & Operating, Inc. | Victoria | Shelton #1 | 8,200 | 46932969 |
| 410963 | Apr 22, 1993 | Apr 22, 1993 | Waters Eng. & Operating, Inc. | Live Oak | Dittmar #1 | 4,700 | 29734066 |
| 410961 | Apr 22, 1993 | Apr 22, 1993 | Waters Eng. & Operating, Inc. | Duval | FNB #7 | 2,000 | 13137695 |
| 410960 | Apr 22, 1993 | Apr 22, 1993 | Waters Eng. & Operating, Inc. | Duval | FNB #8 | 2,000 | 13137696 |
| 409804 | Mar 12, 1993 | Mar 12, 1993 | Waters Eng. & Operating, Inc. | Duval | Pinto-Coates #1 | 2,650 | 13137686 |
| 409555 | Mar 11, 1993 | Mar 11, 1993 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr. et Al #1 | 6,560 | 46932917 |
| 409566 | Mar 5, 1993 | Mar 5, 1993 | Waters Eng. & Operating, Inc. | Duval | FNB #6 | 2,250 | 13137683 |
| 408775 | Feb 4, 1993 | Feb 4, 1993 | Waters Eng. & Operating, Inc. | Hidalgo | Martin, Ronald L. et Al #1A | 8,600 | 21532117 |
| 408576 | Jan 29, 1993 | Jan 29, 1993 | Waters Eng. & Operating, Inc. | Jackson | Rosenwasser #1 | 3,600 | 23932686 |
| 408576Amendment | Jan 29, 1993 | Jan 29, 1993 | Waters Eng. & Operating, Inc. | Jackson | Rosenwasser #1 | 3,600 | 23932686 |
| 407795 | Dec 21, 1992 | Dec 21, 1992 | Waters Eng. & Operating, Inc. | Duval | Peters Estate #1 | 2,200 | 13137648 |
| 406718 | Dec 1, 1992 | Dec 1, 1992 | Waters Eng. & Operating, Inc. | Duval | Pinto #1 | 2,650 | 13137638 |
| 406717 | Dec 1, 1992 | Dec 1, 1992 | Waters Eng. & Operating, Inc. | Duval | F.N.B. #4 | 2,200 | 13137637 |
| 406717Amendment | Dec 1, 1992 | Dec 1, 1992 | Waters Eng. & Operating, Inc. | Duval | F.N.B. #4 | 2,760 | 13137637 |
| 405371 | Nov 24, 1992 | Nov 24, 1992 | Waters Eng. & Operating, Inc. | Starr | Guerra, R.R. #1C | 3,456 | 42732493 |
| 406455 | Nov 23, 1992 | Nov 23, 1992 | Waters Eng. & Operating, Inc. | Webb | Seger #1 | 4,000 | 47935704 |
| 405344 | Oct 28, 1992 | Oct 28, 1992 | Waters Eng. & Operating, Inc. | Duval | Cuellar #1 | 5,200 | 13137629 |
| 404547 | Oct 12, 1992 | Oct 12, 1992 | Waters Eng. & Operating, Inc. | Matagorda | Blessing S-D #1 | 8,800 | 32131678 |
| 403540 | Sep 16, 1992 | Sep 16, 1992 | Waters Eng. & Operating, Inc. | Starr | Davenport/State #1 | 7,500 | 42732539 |
| 403347 | Sep 10, 1992 | Sep 10, 1992 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr. et Al #2 | 6,500 | 46932929 |
| 403347Amendment | Sep 10, 1992 | Sep 10, 1992 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr. et Al #2 | 7,000 | 46932929 |
| 403346 | Sep 10, 1992 | Sep 10, 1992 | Waters Eng. & Operating, Inc. | Fort Bend | Hillendahl Heirs #1 | 7,700 | 15731888 |
| 403115 | Sep 3, 1992 | Sep 3, 1992 | Waters Eng. & Operating, Inc. | Duval | F.N.B. #5 | 2,000 | 13137601 |
| 402723 | Aug 28, 1992 | Aug 28, 1992 | Waters Eng. & Operating, Inc. | Webb | Billings #1 | 2,800 | 47935571 |
| 401346 | Jul 17, 1992 | Jul 17, 1992 | Waters Eng. & Operating, Inc. | Live Oak | Cassin et Al #3 | 3,800 | 29734035 |
| 401251 | Jul 17, 1992 | Jul 17, 1992 | Waters Eng. & Operating, Inc. | Bee | Juranek #1 | 4,600 | 02532645 |
| 400726 | Jul 16, 1992 | Jul 16, 1992 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr. Etal #1 | 6,200 | 46932917 |
| 400726Amendment | Jul 16, 1992 | Jul 16, 1992 | Waters Eng. & Operating, Inc. | Victoria | Braman, D. H. Jr. Etal #1 | 6,600 | 46932917 |
| 400727 | Jul 3, 1992 | Jul 3, 1992 | Waters Eng. & Operating, Inc. | Live Oak | Cassin Etal #2 | 3,900 | 29734032 |
| 400846 | Jul 2, 1992 | Jul 2, 1992 | Waters Eng. & Operating, Inc. | Jackson | Vitera, Joe #1 | 5,900 | 23932651 |
| 400174 | Jun 16, 1992 | Jun 16, 1992 | Waters Eng. & Operating, Inc. | Webb | Biel Ranch #2 | 1,100 | 47935495 |
| 399828 | Jun 3, 1992 | Jun 3, 1992 | Waters Eng. & Operating, Inc. | Duval | F.N.B. #3 | 3,900 | 13137574 |
| 399531 | May 22, 1992 | May 22, 1992 | Waters Eng. & Operating, Inc. | Karnes | Schultz, Otto #1 | 6,600 | 25531316 |
| 398130 | Apr 10, 1992 | Apr 10, 1992 | Waters Eng. & Operating, Inc. | Duval | F.N.B. #2 | 3,950 | 13137556 |
| 398145 | Apr 8, 1992 | Apr 8, 1992 | Waters Eng. & Operating, Inc. | Duval | Hagist Ranch #1 | 1,650 | 13137557 |
| 398129 | Apr 8, 1992 | Apr 8, 1992 | Waters Eng. & Operating, Inc. | Live Oak | Cassin, et Al #1 | 3,850 | 29734016 |
| 398128 | Apr 8, 1992 | Apr 8, 1992 | Waters Eng. & Operating, Inc. | Webb | Biel Ranch #1 | 1,100 | 47935441 |
| 396877 | Feb 27, 1992 | Feb 27, 1992 | Waters Eng. & Operating, Inc. | Starr | De Garza, J. M. #13 | 7,250 | 42732062 |
| 395835 | Jan 15, 1992 | Jan 15, 1992 | Waters Eng. & Operating, Inc. | De Witt | Friedrichs #1 | 9,250 | 12331704 |