| 356464 | Feb 28, 1989 | Feb 28, 1989 | Standard Oil Production Company | Scurry | Odom, R. H. #5 | 6,855 | 41502380 |
| 354953 | Jan 9, 1989 | Jan 9, 1989 | Standard Oil Production Company | Stonewall | East River Unit #20 | 5,184 | 43300802 |
| 354071 | Dec 9, 1988 | Dec 9, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. C #22 | 1,200 | 17332060 |
| 353362 | Nov 17, 1988 | Nov 17, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. C #2 | 6,965 | 17300872 |
| 353158 | Nov 9, 1988 | Nov 9, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #20 | 8,700 | 17332059 |
| 353157 | Nov 9, 1988 | Nov 9, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #21 | 8,700 | 17332058 |
| 352049 | Oct 7, 1988 | Oct 7, 1988 | Standard Oil Production Company | Haskell | East River Unit #68 | 5,200 | 20731979 |
| 351571 | Sep 26, 1988 | Sep 26, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #111 | 8,600 | 17332052 |
| 351570 | Sep 26, 1988 | Sep 26, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #309 | 8,600 | 17332053 |
| 351570Amendment | Sep 26, 1988 | Sep 26, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #309 | 8,600 | 17332053 |
| 351569 | Sep 26, 1988 | Sep 26, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #110 | 8,600 | 17332054 |
| 351311 | Sep 16, 1988 | Sep 16, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #304 | 8,600 | 17300825 |
| 351310 | Sep 16, 1988 | Sep 16, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #302 | 8,600 | 17300820 |
| 351072 | Sep 12, 1988 | Sep 12, 1988 | Standard Oil Production Company | Haskell | East River Unit #71 | 5,200 | 20731976 |
| 351071 | Sep 12, 1988 | Sep 12, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #103 | 8,600 | 17300856 |
| 351070 | Sep 12, 1988 | Sep 12, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #104 | 8,600 | 17300859 |
| 351069 | Sep 12, 1988 | Sep 12, 1988 | Standard Oil Production Company | Glasscock | Calvin Dean Unit #109 | 8,600 | 17332050 |
| 351050 | Sep 9, 1988 | Sep 9, 1988 | Standard Oil Production Company | Stonewall | East River Unit #67 | 5,200 | 43332436 |
| 350553 | Aug 26, 1988 | Aug 26, 1988 | Standard Oil Production Company | Stonewall | East River Unit #65 | 5,200 | 43332429 |
| 350552 | Aug 26, 1988 | Aug 26, 1988 | Standard Oil Production Company | Knox | East River Unit #69 | 5,200 | 27531894 |
| 349719 | Aug 3, 1988 | Aug 3, 1988 | Standard Oil Production Company | Stonewall | East River Unit #64 | 5,275 | 43332417 |
| 349506 | Jul 29, 1988 | Jul 29, 1988 | Standard Oil Production Company | Lavaca | N. E. Provident City Gas Unit #1 | 14,500 | 28531727 |
| 349444 | Jul 29, 1988 | Jul 29, 1988 | Standard Oil Production Company | Glasscock | Bryans, J. C. "A" #1 | 1,100 | 17332046 |
| 349444Amendment | Jul 29, 1988 | Jul 29, 1988 | Standard Oil Production Company | Glasscock | Bryans, J. C. "A" #1 | 1,100 | 17332046 |
| 346749 | Jul 1, 1988 | Jul 1, 1988 | Standard Oil Production Company | San Patricio | Bartosh #4 | 12,600 | 40932245 |
| 348145 | Jun 23, 1988 | Jun 23, 1988 | Standard Oil Production Company | King | Davis, Mattie #7 | 5,200 | 26931823 |
| 347250 | Jun 2, 1988 | Jun 2, 1988 | Standard Oil Production Company | Jackson | Skalicky #1 | 14,500 | 23932412 |
| 346931 | May 24, 1988 | May 24, 1988 | Standard Oil Production Company | Wharton | Hillyer #1 | 12,000 | 48133168 |
| 345478 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Bryans, M. V. "A" #7 | 12,400 | 17331603 |
| 345458 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Bryans, M. V. "A" #5 | 8,559 | 17330951 |
| 345457 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #18 | 8,620 | 17331513 |
| 345447 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "B" #10 | 6,995 | 17300893 |
| 345446 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #3 | 8,518 | 17300873 |
| 345445 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #6 | 8,625 | 17300882 |
| 345444 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #7 | 8,594 | 17300885 |
| 345443 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #17 | 8,670 | 17331002 |
| 345442 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Bryans, M. V. C #1 | 8,465 | 17300832 |
| 345441 | Apr 21, 1988 | Apr 21, 1988 | Standard Oil Production Company | Glasscock | Cox, X. B. "C" #4 | 8,507 | 17300861 |
| 344615 | Apr 15, 1988 | Apr 15, 1988 | Standard Oil Production Company | Lavaca | North Provident City Gas Unit #1 | 14,500 | 28532017 |
| 344221 | Mar 24, 1988 | Mar 24, 1988 | Standard Oil Production Company | Reagan | Sam #108 | 11,000 | 38333883 |
| 342359 | Feb 8, 1988 | Feb 8, 1988 | Standard Oil Production Company | Colorado | East Provident City Gas Unit #1 #2 | 15,000 | 08931720 |
| 342159 | Feb 3, 1988 | Feb 3, 1988 | Standard Oil Production Company | Stonewall | East River Unit #14 | 5,201 | 43300806 |
| 342158 | Feb 3, 1988 | Feb 3, 1988 | Standard Oil Production Company | Stonewall | East River Unit #12 | 5,183 | 43300803 |
| 340966 | Feb 2, 1988 | Feb 2, 1988 | Standard Oil Production Company | Stonewall | East River Unit #38 | 5,643 | 43300785 |
| 340964 | Feb 2, 1988 | Feb 2, 1988 | Standard Oil Production Company | Stonewall | East River Unit #61 | 5,277 | 43300790 |
| 340962 | Feb 2, 1988 | Feb 2, 1988 | Standard Oil Production Company | Stonewall | East River Unit #30 | 5,164 | 43300801 |
| 340961 | Feb 2, 1988 | Feb 2, 1988 | Standard Oil Production Company | Stonewall | East River Unit #48 | 5,200 | 43300851 |
| 340958 | Feb 2, 1988 | Feb 2, 1988 | Standard Oil Production Company | King | East River Unit #2 | 5,290 | 26931666 |
| 342083 | Feb 1, 1988 | Feb 1, 1988 | Standard Oil Production Company | King | Davis, Mattie #6 | 5,200 | 26931780 |
| 342082 | Feb 1, 1988 | Feb 1, 1988 | Standard Oil Production Company | Stonewall | McGregor "B" #11 | 5,200 | 43332343 |
| 340186 | Dec 31, 1987 | Dec 31, 1987 | Standard Oil Production Company | Midland | Braden, E. (Sdu #436) #18 | 7,988 | 32900151 |
| 340399 | Dec 18, 1987 | Dec 18, 1987 | Standard Oil Production Company | Stonewall | East River Unit #57 | 5,207 | 43300794 |
| 340398 | Dec 18, 1987 | Dec 18, 1987 | Standard Oil Production Company | Stonewall | East River Unit #24 | 5,200 | 43300804 |
| 340176 | Dec 18, 1987 | Dec 18, 1987 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #16 | 8,605 | 17300908 |
| 338381 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #22 | 5,200 | 43332296 |
| 338381Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #22 | 5,200 | 43332296 |
| 338380 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #63 | 5,200 | 43332297 |
| 338380Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #63 | 5,200 | 43332297 |
| 338379 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #17 | 5,200 | 43332298 |
| 338379Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #17 | 5,200 | 43332298 |
| 338379Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #17 | 5,200 | 43332298 |
| 338378 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #52 | 5,200 | 43332299 |
| 338378Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #52 | 5,200 | 43332299 |
| 338378Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #52 | 5,200 | 43332299 |
| 338377 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #13 | 5,200 | 43332300 |
| 338377Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #13 | 5,200 | 43332300 |
| 338376 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #50 | 5,200 | 43332301 |
| 338376Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #50 | 5,200 | 43332301 |
| 338375 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #11 | 5,200 | 43332302 |
| 338375Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #11 | 5,200 | 43332302 |
| 338374 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | King | East River Unit #5 | 5,200 | 26931752 |
| 338374Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | King | East River Unit #5 | 5,200 | 26931752 |
| 338373 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #47 | 5,200 | 43332308 |
| 338373Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #47 | 5,200 | 43332308 |
| 338372 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #39 | 5,200 | 43332307 |
| 338372Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #39 | 5,200 | 43332307 |
| 338371 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #36 | 5,200 | 43332306 |
| 338371Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #36 | 5,200 | 43332306 |
| 338370 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #25 | 5,200 | 43332305 |
| 338370Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #25 | 5,200 | 43332305 |
| 338369 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #31 | 5,200 | 43332304 |
| 338369Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #31 | 5,200 | 43332304 |
| 338368 | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #8 | 5,200 | 43332303 |
| 338368Amendment | Nov 4, 1987 | Nov 4, 1987 | Standard Oil Production Company | Stonewall | East River Unit #8 | 5,200 | 43332303 |
| 337766 | Oct 23, 1987 | Oct 23, 1987 | Standard Oil Production Company | Wharton | Nelson #1 | 13,000 | 48133115 |
| 336498 | Sep 28, 1987 | Sep 28, 1987 | Standard Oil Production Company | Glasscock | Davenport, R. S. "C" #19 | 8,610 | 17331510 |
| 336326 | Sep 24, 1987 | Sep 24, 1987 | Standard Oil Production Company | Wharton | Chappell #1 | 12,500 | 48133104 |
| 335667 | Sep 10, 1987 | Sep 10, 1987 | Standard Oil Production Company | Calhoun | Dunwoody, Charles #16 | 5,594 | 05700051 |
| 334796 | Aug 19, 1987 | Aug 19, 1987 | Standard Oil Production Company | Stonewall | Lewis, Edd #19 | 5,150 | 43332274 |
| 334050 | Aug 17, 1987 | Aug 17, 1987 | Standard Oil Production Company | Upton | Myers #5 | 11,650 | 46132445 |
| 334050Amendment | Aug 17, 1987 | Aug 17, 1987 | Standard Oil Production Company | Upton | Myers #5 | 11,650 | 46132445 |
| 334227 | Aug 12, 1987 | Aug 12, 1987 | Standard Oil Production Company | Glasscock | Davenport, R. S. "A" #5 | 6,972 | 17300877 |
| 332220 | Jun 30, 1987 | Jun 30, 1987 | Standard Oil Production Company | Midland | Braden, David #1 | 8,750 | 32930900 |
| 330747 | Jun 3, 1987 | Jun 3, 1987 | Standard Oil Production Company | Yoakum | State Weems #1D | 11,535 | 50100364 |
| 330958 | Jun 2, 1987 | Jun 2, 1987 | Standard Oil Production Company | Wharton | Mehrens #1 | 12,000 | 48133065 |
| 330958Amendment | Jun 2, 1987 | Jun 2, 1987 | Standard Oil Production Company | Wharton | Mehrens #1 | 12,000 | 48133065 |
| 330641 | May 27, 1987 | May 27, 1987 | Standard Oil Production Company | Glasscock | Bryans, M. V. "A" #3 | 8,564 | 17300835 |
| 329460 | Apr 30, 1987 | Apr 30, 1987 | Standard Oil Production Company | Medina | Wilson, A. H. #9 | 3,100 | 32533437 |
| 328181 | Mar 30, 1987 | Mar 30, 1987 | Standard Oil Production Company | Lavaca | Nepc Gas Unit #2 #1 | 15,400 | 28531987 |
| 328181Amendment | Mar 30, 1987 | Mar 30, 1987 | Standard Oil Production Company | Lavaca | Nepc Gas Unit #2 #1 | 15,400 | 28531987 |