| 510963 | Jul 6, 2001 | Jul 6, 2001 | Petroleum Technical Services Co. | Gaines | Shell #1 | 5,500 | 16535767 |
| 509529 | Jun 5, 2001 | Jun 5, 2001 | Petroleum Technical Services Co. | Gaines | Hill #4 | 8,000 | 16535754 |
| 509539 | Jun 4, 2001 | Jun 4, 2001 | Petroleum Technical Services Co. | Gaines | Scantling "A" #1 | 8,000 | 16535755 |
| 508981 | May 16, 2001 | May 16, 2001 | Petroleum Technical Services Co. | Gaines | Shield #1 | 8,000 | 16536429 |
| 508872 | May 15, 2001 | May 15, 2001 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #9 | 4,800 | 16535745 |
| 508102 | Apr 30, 2001 | Apr 30, 2001 | Petroleum Technical Services Co. | Gaines | Hancock #6 | 8,000 | 16535735 |
| 507832 | Apr 19, 2001 | Apr 19, 2001 | Petroleum Technical Services Co. | Gaines | Malone #1 | 7,800 | 16535733 |
| 506008 | Mar 6, 2001 | Mar 6, 2001 | Petroleum Technical Services Co. | Gaines | Hancock #5 | 8,000 | 16535700 |
| 504571 | Feb 1, 2001 | Feb 1, 2001 | Petroleum Technical Services Co. | Gaines | Scantling #1 | 8,000 | 16535685 |
| 502030 | Nov 20, 2000 | Nov 20, 2000 | Petroleum Technical Services Co. | Gaines | Goins #4 | 8,000 | 16535655 |
| 497717 | Aug 1, 2000 | Aug 1, 2000 | Petroleum Technical Services Co. | Gaines | Mooers #1 | 3,000 | 16533958 |
| 496825 | Jul 7, 2000 | Jul 7, 2000 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #3 | 4,800 | 16532901 |
| 496109 | Jun 16, 2000 | Jun 16, 2000 | Petroleum Technical Services Co. | Crane | Cowden, Tom #4 | 2,800 | 10332846 |
| 494222 | Apr 20, 2000 | Apr 20, 2000 | Petroleum Technical Services Co. | Gaines | Bailey #1 | 3,990 | 16533441 |
| 490945 | Jan 12, 2000 | Jan 12, 2000 | Petroleum Technical Services Co. | Gaines | Hart #1 | 7,800 | 16535488 |
| 489180 | Nov 12, 1999 | Nov 12, 1999 | Petroleum Technical Services Co. | Gaines | Bales Estate #1 | 6,000 | 16535471 |
| 474644 | Mar 25, 1998 | Mar 25, 1998 | Petroleum Technical Services Co. | Red River | Jones, B. W. #1 | 6,000 | 38730542 |
| 470538 | Nov 26, 1997 | Nov 26, 1997 | Petroleum Technical Services Co. | Erath | Davis #1 | 4,200 | 14330983 |
| 469517 | Nov 7, 1997 | Nov 7, 1997 | Petroleum Technical Services Co. | Gaines | James #1 | 8,000 | 16534000 |
| 468799 | Oct 21, 1997 | Oct 21, 1997 | Petroleum Technical Services Co. | Gaines | Hill "A" #1 | 7,800 | 16535291 |
| 467017 | Sep 8, 1997 | Sep 8, 1997 | Petroleum Technical Services Co. | Lamar | Francis #1 | 6,000 | 27730117 |
| 464385 | Jul 7, 1997 | Jul 7, 1997 | Petroleum Technical Services Co. | Gaines | Mooers #5 | 7,800 | 16535209 |
| 461318 | Apr 24, 1997 | Apr 24, 1997 | Petroleum Technical Services Co. | Gaines | Mooers #4 | 7,800 | 16535166 |
| 459367 | Mar 6, 1997 | Mar 6, 1997 | Petroleum Technical Services Co. | Gaines | Mooers #3 | 7,800 | 16535137 |
| 457608 | Jan 27, 1997 | Jan 27, 1997 | Petroleum Technical Services Co. | Gaines | Mooers #2 | 7,800 | 16535117 |
| 455020 | Nov 15, 1996 | Nov 15, 1996 | Petroleum Technical Services Co. | Gaines | Hancock #4 | 7,800 | 16535086 |
| 448346 | Jun 26, 1996 | Jun 26, 1996 | Petroleum Technical Services Co. | Gaines | Bailey #5 | 7,800 | 16535002 |
| 448684 | Jun 4, 1996 | Jun 4, 1996 | Petroleum Technical Services Co. | Gaines | Goins #3 | 8,000 | 16535014 |
| 448290 | May 22, 1996 | May 22, 1996 | Petroleum Technical Services Co. | Gaines | Landreth #6 | 4,800 | 16535001 |
| 446708 | Apr 12, 1996 | Apr 12, 1996 | Petroleum Technical Services Co. | Gaines | Goins #2 | 8,000 | 16534986 |
| 441951 | Nov 21, 1995 | Nov 21, 1995 | Petroleum Technical Services Co. | Gaines | Blevins #3 | 8,000 | 16534927 |
| 441951Amendment | Nov 21, 1995 | Nov 21, 1995 | Petroleum Technical Services Co. | Gaines | Blevins #3 | 8,000 | 16534927 |
| 440786 | Oct 13, 1995 | Oct 13, 1995 | Petroleum Technical Services Co. | Gaines | Cherry Est. #2 | 7,800 | 16534917 |
| 427526 | Aug 31, 1994 | Aug 31, 1994 | Petroleum Technical Services Co. | Palo Pinto | Long "63" #1 | 4,600 | 36334307 |
| 424724 | Jun 14, 1994 | Jun 14, 1994 | Petroleum Technical Services Co. | Palo Pinto | Long 74 #1 | 4,600 | 36334285 |
| 424724Amendment | Jun 14, 1994 | Jun 14, 1994 | Petroleum Technical Services Co. | Palo Pinto | Long "74" #1 | 4,600 | 36334285 |
| 420675 | Feb 1, 1994 | Feb 1, 1994 | Petroleum Technical Services Co. | Crockett | Mann #1 | 6,500 | 10536472 |
| 415605 | Sep 9, 1993 | Sep 9, 1993 | Petroleum Technical Services Co. | Gaines | Kegler #1 | 7,800 | 16534633 |
| 414916 | Aug 17, 1993 | Aug 17, 1993 | Petroleum Technical Services Co. | Gaines | Hill #3 | 7,800 | 16534621 |
| 412970 | Jun 22, 1993 | Jun 22, 1993 | Petroleum Technical Services Co. | Gaines | Harlow #1 | 7,800 | 16534599 |
| 411290 | May 6, 1993 | May 6, 1993 | Petroleum Technical Services Co. | Gaines | Fleeman #1 | 5,700 | 16534585 |
| 409980 | Mar 23, 1993 | Mar 23, 1993 | Petroleum Technical Services Co. | Gaines | Hill #2 | 7,800 | 16534569 |
| 407703 | Dec 30, 1992 | Dec 30, 1992 | Petroleum Technical Services Co. | Concho | Hadley #1 | 3,700 | 09531525 |
| 407410 | Dec 21, 1992 | Dec 21, 1992 | Petroleum Technical Services Co. | Stonewall | Long #1 | 6,500 | 43332830 |
| 406151 | Nov 20, 1992 | Nov 20, 1992 | Petroleum Technical Services Co. | Glasscock | Neal, A.D. Heirs #1 | 3,200 | 17332270 |
| 405903 | Nov 19, 1992 | Nov 19, 1992 | Petroleum Technical Services Co. | Gaines | Hill #1 | 7,800 | 16534531 |
| 393089 | Oct 23, 1991 | Oct 23, 1991 | Petroleum Technical Services Co. | Gaines | Cherry Est. #1 | 7,800 | 16534395 |
| 392553 | Oct 8, 1991 | Oct 8, 1991 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #8 | 4,800 | 16534392 |
| 391647 | Sep 6, 1991 | Sep 6, 1991 | Petroleum Technical Services Co. | Gaines | Cleburne #1 | 7,800 | 16534382 |
| 388572 | Jun 14, 1991 | Jun 14, 1991 | Petroleum Technical Services Co. | Fisher | Newman-Hill #1 | 6,400 | 15132297 |
| 388395 | Jun 4, 1991 | Jun 4, 1991 | Petroleum Technical Services Co. | Gaines | Crump Est. "C" #2 | 4,800 | 16534360 |
| 385887 | Mar 19, 1991 | Mar 19, 1991 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #7 | 4,800 | 16534331 |
| 382131 | Dec 14, 1990 | Dec 14, 1990 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #6 | 4,800 | 16534289 |
| 381778 | Dec 10, 1990 | Dec 10, 1990 | Petroleum Technical Services Co. | Gaines | Hancock #3 | 7,800 | 16534287 |
| 378449 | Sep 25, 1990 | Sep 25, 1990 | Petroleum Technical Services Co. | Gaines | Dunbar "A" #1 | 7,800 | 16534227 |
| 375967 | Jul 26, 1990 | Jul 26, 1990 | Petroleum Technical Services Co. | Gaines | Hancock #2 | 7,800 | 16534191 |
| 370684 | Mar 12, 1990 | Mar 12, 1990 | Petroleum Technical Services Co. | Gaines | Hancock #1 | 7,800 | 16534142 |
| 367556 | Dec 14, 1989 | Dec 14, 1989 | Petroleum Technical Services Co. | Gaines | McGowen #1 | 8,000 | 16534125 |
| 360143 | Jun 8, 1989 | Jun 8, 1989 | Petroleum Technical Services Co. | Gaines | Weltmer #1 | 8,000 | 16534074 |
| 360143Amendment | Jun 8, 1989 | Jun 8, 1989 | Petroleum Technical Services Co. | Gaines | Weltmer #1 | 7,817 | 16534074 |
| 351267 | Sep 21, 1988 | Sep 21, 1988 | Petroleum Technical Services Co. | Gaines | Mooers #1 | 7,740 | 16533958 |
| 350404 | Aug 24, 1988 | Aug 24, 1988 | Petroleum Technical Services Co. | Gaines | James #1 | 8,000 | 16534000 |
| 348930 | Jul 18, 1988 | Jul 18, 1988 | Petroleum Technical Services Co. | Gaines | Goins #1 | 8,000 | 16533995 |
| 345625 | Apr 26, 1988 | Apr 26, 1988 | Petroleum Technical Services Co. | Gaines | Mooers #1 | 7,800 | 16533958 |
| 344940 | Apr 8, 1988 | Apr 8, 1988 | Petroleum Technical Services Co. | Gaines | Alley "A" #4 | 7,700 | 16533955 |
| 343769 | Mar 15, 1988 | Mar 15, 1988 | Petroleum Technical Services Co. | Gaines | Blevins #2 | 8,000 | 16533937 |
| 343314 | Mar 1, 1988 | Mar 1, 1988 | Petroleum Technical Services Co. | Gaines | Blevins #1 | 4,800 | 16533593 |
| 341683 | Jan 22, 1988 | Jan 22, 1988 | Petroleum Technical Services Co. | Gaines | Andrews "A" #1 | 8,000 | 16533882 |
| 340175 | Dec 15, 1987 | Dec 15, 1987 | Petroleum Technical Services Co. | Gaines | Terry, W. N. #2 | 7,700 | 16533807 |
| 340175Amendment | Dec 15, 1987 | Dec 15, 1987 | Petroleum Technical Services Co. | Gaines | Terry, W. N. #2 | 7,700 | 16533807 |
| 338595 | Nov 10, 1987 | Nov 10, 1987 | Petroleum Technical Services Co. | Gaines | Cities Service #3 | 7,800 | 16533796 |
| 338351 | Nov 5, 1987 | Nov 5, 1987 | Petroleum Technical Services Co. | Gaines | Andrews #1 | 8,000 | 16533792 |
| 337375 | Oct 15, 1987 | Oct 15, 1987 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #5 | 4,800 | 16533783 |
| 334493 | Aug 13, 1987 | Aug 13, 1987 | Petroleum Technical Services Co. | Gaines | Alley "B" #1 | 8,000 | 16501471 |
| 333334 | Jul 23, 1987 | Jul 23, 1987 | Petroleum Technical Services Co. | Gaines | Landreth #5 | 7,800 | 16533666 |
| 332245 | Jun 30, 1987 | Jun 30, 1987 | Petroleum Technical Services Co. | Gaines | Cities Service "A" #1 | 7,800 | 16533656 |
| 330378 | May 18, 1987 | May 18, 1987 | Petroleum Technical Services Co. | Gaines | Caton "B" #1 | 8,000 | 16533623 |
| 329199 | Apr 23, 1987 | Apr 23, 1987 | Petroleum Technical Services Co. | Andrews | Scarborough #2 | 8,000 | 00335799 |
| 329158 | Apr 21, 1987 | Apr 21, 1987 | Petroleum Technical Services Co. | Gaines | Holzmer #1 | 10,800 | 16533616 |
| 328340 | Apr 1, 1987 | Apr 1, 1987 | Petroleum Technical Services Co. | Gaines | Bailey #4 | 8,000 | 16533611 |
| 327520 | Mar 11, 1987 | Mar 11, 1987 | Petroleum Technical Services Co. | Andrews | Rooney #1 | 7,700 | 00335759 |
| 326895 | Feb 20, 1987 | Feb 20, 1987 | Petroleum Technical Services Co. | Gaines | Blevins #1 | 7,700 | 16533593 |
| 325267 | Jan 12, 1987 | Jan 12, 1987 | Petroleum Technical Services Co. | Gaines | Cities Service #2 | 7,800 | 16533585 |
| 323164 | Nov 18, 1986 | Nov 18, 1986 | Petroleum Technical Services Co. | Gaines | Bailey #3 | 8,000 | 16533573 |
| 322879 | Nov 12, 1986 | Nov 12, 1986 | Petroleum Technical Services Co. | Andrews | Scarborough #1 | 8,000 | 00302570 |
| 322162 | Oct 24, 1986 | Oct 24, 1986 | Petroleum Technical Services Co. | Ward | Smith, Sealy "56" #1 | 8,500 | 47533767 |
| 320893 | Sep 24, 1986 | Sep 24, 1986 | Petroleum Technical Services Co. | Gaines | Alley "A" #3 | 8,000 | 16533561 |
| 320048 | Sep 3, 1986 | Sep 3, 1986 | Petroleum Technical Services Co. | Gaines | Landreth #4 | 7,800 | 16533546 |
| 304471 | Jul 23, 1986 | Jul 23, 1986 | Petroleum Technical Services Co. | Gaines | Caton "A" #1 | 7,800 | 16533538 |
| 302344 | May 21, 1986 | May 21, 1986 | Petroleum Technical Services Co. | Gaines | Cities Service #1 | 7,700 | 16533527 |
| 301365 | Apr 23, 1986 | Apr 23, 1986 | Petroleum Technical Services Co. | Gaines | Landreth #3 | 7,750 | 16533523 |
| 298423 | Feb 22, 1986 | Feb 22, 1986 | Petroleum Technical Services Co. | Winkler | Smith, Sealy "55" #1 | 8,700 | 49532045 |
| 298319 | Feb 19, 1986 | Feb 19, 1986 | Petroleum Technical Services Co. | Gaines | Alley "A" #2 | 8,000 | 16533502 |
| 297978 | Feb 19, 1986 | Feb 19, 1986 | Petroleum Technical Services Co. | Gaines | Bailey #2 | 8,000 | 16533495 |
| 293265 | Dec 17, 1985 | Dec 17, 1985 | Petroleum Technical Services Co. | Gaines | Landreth #2 | 7,650 | 16533446 |
| 292402 | Dec 10, 1985 | Dec 10, 1985 | Petroleum Technical Services Co. | Gaines | Bailey #1 | 8,000 | 16533441 |
| 290175 | Nov 13, 1985 | Nov 13, 1985 | Petroleum Technical Services Co. | Gaines | Alley "A" #1 | 7,700 | 16533421 |
| 286351 | Sep 30, 1985 | Sep 30, 1985 | Petroleum Technical Services Co. | Gaines | Crump Estate "C" #1 | 8,422 | 16503282 |
| 286032 | Sep 27, 1985 | Sep 27, 1985 | Petroleum Technical Services Co. | Gaines | Caton #2 | 7,650 | 16533388 |
| 284329 | Sep 9, 1985 | Sep 9, 1985 | Petroleum Technical Services Co. | Gaines | Crump Est. "A" #4 | 4,950 | 16533355 |