| 345373 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Montgomery | Conroe Field Unit #43733930811 | 5,400 |
| 345272 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Harris | Tomball GU 2 #2420130398 | 5,665 |
| 345256 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Kleberg | King Ranch Alazan #3127300692 | 8,950 |
| 345208 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Kenedy | Kleberg, R. J. Jr.tr. Stillman #8926131085 | 13,200 |
| 345205 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Kenedy | King Ranch San Jose de la Parra #2026130438 | 8,570 |
| 345160 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Brooks | McGill Bros. #39104701621 | 6,400 |
| 345157 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Brooks | McGill Bros. #43704730107 | 6,610 |
| 345072 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Brooks | McGill Bros. #35904701564 | 6,420 |
| 345071 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Brooks | McGill Bros. #22504701110 | 6,386 |
| 345070 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Brooks | McGill Bros. #19104701103 | 6,399 |
| 344260 | Apr 18, 1988 | Apr 18, 1988 | Exxon Corp. | Upshur | Gladewater GU 3 #245930665 | 12,500 |
| 345068 | Apr 15, 1988 | Apr 15, 1988 | Exxon Corp. | Kenedy | Sarita Field Oil & Gas Unit #16526130643 | 6,420 |
| 345066 | Apr 14, 1988 | Apr 14, 1988 | Exxon Corp. | Brooks | Kleberg,rj Jr.tr.viboras Pasture #9504730940 | 9,600 |
| 344238 | Apr 14, 1988 | Apr 14, 1988 | Exxon Corp. | Harris | Tomball GU NO.1 #920100364 | 5,577 |
| 344115 | Apr 14, 1988 | Apr 14, 1988 | Exxon Corp. | Polk | Granbury, C.B. #9537330704 | 7,300 |
| 344113 | Apr 14, 1988 | Apr 14, 1988 | Exxon Corp. | Fort Bend | George, Mrs. A.P. "A" #2515731566 | 3,449 |
| 345149 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Austin | Sherrod, Luther R. #601500175 | 4,151 |
| 345148 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Chambers | Rearwin, L. W. #907131702 | 9,135 |
| 345073 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Kleberg | King Ranch Alazan #40327331813 | 9,160 |
| 344999 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Midland | Hutt, Donald L. Fee #3732931999 | 9,600 |
| 344998 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Midland | Hutt, Donald L. Fee #3632932001 | 9,600 |
| 344997 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Midland | Hutt, Donald L. Fee #3532932000 | 9,600 |
| 344996 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Midland | Hutt, Donald L. Fee #3332931998 | 9,600 |
| 344948 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Jim Wells | King Ranch West Borregos #M 39C24930234 | 5,575 |
| 344947 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Kleberg | King Ranch Alazan #2027300679 | 8,980 |
| 344944 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Brooks | Kleberg, R.j.jr.tr.viboras Past. #13204731487 | 7,750 |
| 344189 | Apr 13, 1988 | Apr 13, 1988 | Exxon Corp. | Wharton | Cockburn, H. C. #10548131010 | 7,407 |
| 345009 | Apr 12, 1988 | Apr 12, 1988 | Exxon Corp. | Andrews | Fullerton Clearfork Unit #564100336111 | 7,400 |
| 344043 | Apr 12, 1988 | Apr 12, 1988 | Exxon Corp. | Jackson | Vanderbilt State "B" #1023902897 | 7,390 |
| 344970 | Apr 11, 1988 | Apr 11, 1988 | Exxon Corp. | Franklin | J. C. Young Heirs Oil Unit #2 #115930446 | 4,440 |
| 344969 | Apr 11, 1988 | Apr 11, 1988 | Exxon Corp. | Franklin | J. C. Young Heirs Oil Unit #1 #115930445 | 4,000 |
| 344946 | Apr 11, 1988 | Apr 11, 1988 | Exxon Corp. | Kenedy | Sarita Field Oil & Gas Unit #20826131084 | 4,800 |
| 344625 | Apr 11, 1988 | Apr 11, 1988 | Exxon Corp. | Harris | Holderrieth, P. #720130260 | 10,200 |
| 344625Amendment | Apr 11, 1988 | Apr 11, 1988 | Exxon Corp. | Harris | Tomball GU 9 #620130260 | 10,200 |
| 344904 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Jim Wells | King Ranch West Borregos #M 41C24930246 | 5,250 |
| 344903 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Calhoun | Welder, E. H. Mrs. #2905701374 | 5,600 |
| 344902 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Kleberg | King Ranch Alazan #32827331353 | 6,220 |
| 344901 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Brooks | Trad, Amado "B" #504731331 | 7,720 |
| 344900 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Brooks | R.J.K. Jr.tr. Viboras Pasture #8604730787 | 10,050 |
| 344899 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Kleberg | King Ranch Borregos #55827331497 | 7,478 |
| 344875 | Apr 8, 1988 | Apr 8, 1988 | Exxon Corp. | Hidalgo | Santa FE Ranch "B" #9821531544 | 9,400 |
| 344771 | Apr 5, 1988 | Apr 5, 1988 | Exxon Corp. | Montgomery | Conroe Field Unit #391133930810 | 5,400 |
| 344623 | Mar 31, 1988 | Mar 31, 1988 | Exxon Corp. | Harris | Webster Field Unit #132920132133 | 6,100 |
| 344621 | Mar 31, 1988 | Mar 31, 1988 | Exxon Corp. | Jefferson | Exxon Fee Dewitt #224531935 | 10,300 |
| 344562 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Jim Hogg | McGill Bros. #51524731606 | 8,400 |
| 344561 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Starr | McGill Bros. #25242700237 | 7,781 |
| 344531 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Starr | McGill Bros. #18742700216 | 7,500 |
| 344530 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Brooks | McGill Bros. #10704701167 | 6,820 |
| 344529 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Starr | McGill Bros. #49542731758 | 6,800 |
| 344528 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Starr | McGill Bros. #36642704878 | 6,570 |
| 344527 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Brooks | Kleberg, R.j.jr.tr.quiteria Past #3304701286 | 10,004 |
| 344526 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Kleberg | King Ranch Alazan #40027331781 | 11,300 |
| 344525 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Brooks | McGill Bros. #48104731060 | 10,200 |
| 344524 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Kenedy | King Ranch San Jose de la Parra #3926130684 | 9,300 |
| 344523 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Brooks | Kleberg, R.j.jr.tr Barrosa Past. #1704730688 | 7,120 |
| 344522 | Mar 30, 1988 | Mar 30, 1988 | Exxon Corp. | Kleberg | King Ranch Stratton #A 6827330228 | 7,382 |
| 344462 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Wood | Hawkins Field Unit #323449931599 | 5,500 |
| 344461 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Wood | Hawkins Field Unit #335249931600 | 5,000 |
| 344460 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Franklin | Rutherford, J. K. #815930444 | 4,440 |
| 344406 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Andrews | Freund C #100336107 | 7,800 |
| 344405 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Gaines | Robertson Clearfork Unit #480316533946 | 7,400 |
| 344363 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Kleberg | King Ranch Stratton #P28027332105 | 8,500 |
| 344362 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Brooks | Kleberg, R.j.jr.tr.viboras Past. #13504731522 | 8,700 |
| 343944 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Jackson | Vanderbilt State #623902892 | 5,766 |
| 343943 | Mar 28, 1988 | Mar 28, 1988 | Exxon Corp. | Jackson | Vanderbilt State #123902888 | 6,390 |
| 344395 | Mar 25, 1988 | Mar 25, 1988 | Exxon Corp. | Wharton | Cockburn, H. C. #11048132474 | 6,530 |
| 344394 | Mar 25, 1988 | Mar 25, 1988 | Exxon Corp. | Van Zandt | Blake, R. S. #1146700454 | 2,400 |
| 343224 | Mar 25, 1988 | Mar 25, 1988 | Exxon Corp. | Fort Bend | Lockwood & Sharp "A" #415702418 | 5,315 |
| 344328 | Mar 24, 1988 | Mar 24, 1988 | Exxon Corp. | Upton | Giddings Estate Fee #1362A46132785 | 8,500 |
| 344328Amendment | Mar 24, 1988 | Mar 24, 1988 | Exxon Corp. | Upton | Giddings Estate Fee #1362A46132785 | 8,500 |
| 343977 | Mar 24, 1988 | Mar 24, 1988 | Exxon Corp. | Kenedy | Kleberg, R. J. Jr. Tr. Stillman #6626130854 | 12,000 |
| 344247 | Mar 23, 1988 | Mar 23, 1988 | Exxon Corp. | Harris | Webster Field Unit #290420132132 | 6,100 |
| 344246 | Mar 23, 1988 | Mar 23, 1988 | Exxon Corp. | Franklin | Rutherford, J. K. #615930443 | 4,440 |
| 341775 | Mar 23, 1988 | Mar 23, 1988 | Exxon Corp. | Wharton | East Magnet Withers Unit No. 4 #148133144 | 6,100 |
| 344188 | Mar 22, 1988 | Mar 22, 1988 | Exxon Corp. | Upshur | Gladewater GU 3 #245930665 | 12,500 |
| 344187 | Mar 22, 1988 | Mar 22, 1988 | Exxon Corp. | Cherokee | Cobb-Holman Lumber Company #2107330745 | 5,400 |
| 344120 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Fort Bend | Lockwood & Sharp -A- #11815731773 | 5,500 |
| 344119 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Harris | Webster Field Unit #184120132131 | 6,100 |
| 344118 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Chambers | Middleton, A.D. a/C 5 #11507131864 | 8,250 |
| 344117 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Austin | Paine, Robert G. #2001500366 | 4,120 |
| 344116 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Austin | Paine, Robert G. #2901530071 | 4,240 |
| 344116Amendment | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Austin | Paine, Robert G. #2901530071 | 4,240 |
| 344102 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Brooks | McGill Bros. #23304701160 | 7,200 |
| 344097 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Kenedy | Sarita Field Oil & Gas Unit #4626100134 | 10,000 |
| 344096 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Kenedy | Kleberg, Robert J.jr.tr.stillman #7326130919 | 12,400 |
| 344074 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Andrews | Freund B #100336094 | 8,000 |
| 343947 | Mar 21, 1988 | Mar 21, 1988 | Exxon Corp. | Brooks | Kleberg, R.j.jr.tr.quiteria Past #11204731267 | 10,148 |
| 344101 | Mar 18, 1988 | Mar 18, 1988 | Exxon Corp. | Cherokee | Cunningham, T.J. Est., TR 1 #1607330744 | 5,300 |
| 344045 | Mar 18, 1988 | Mar 18, 1988 | Exxon Corp. | Upton | Midkiff Unit #560146132781 | 8,400 |
| 344044 | Mar 18, 1988 | Mar 18, 1988 | Exxon Corp. | Midland | Midkiff Unit #140332931994 | 8,400 |
| 342086 | Mar 18, 1988 | Mar 18, 1988 | Exxon Corp. | Upshur | Gladewater Gas Unit No. 19 #245930661 | 12,500 |
| 342067 | Mar 18, 1988 | Mar 18, 1988 | Exxon Corp. | San Patricio | Mayo, J. W. Acct. 1 #8940932224 | 5,050 |
| 343976 | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Brooks | Viboras Field Gas Unit #V 1104701253 | 9,000 |
| 343958 | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Willacy | Sauz Ranch Mulatos Pasture #17048930652 | 6,800 |
| 343957 | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Brooks | Kleberg,rj Jr.tr.zach.past.state #1204730968 | 11,353 |
| 343956 | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Kleberg | King Ranch Borregos #57927331699 | 7,650 |
| 343955 | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Nueces | King Ranch East Laureles #G 4135531321 | 9,000 |
| 343955Amendment | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Nueces | King Ranch East Laureles "G" #4135531321 | 9,400 |
| 343955Amendment | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Nueces | King Ranch East Laureles "G" #4135531321 | 9,400 |
| 343954 | Mar 17, 1988 | Mar 17, 1988 | Exxon Corp. | Brooks | McGill Bros. #29204701126 | 6,600 |