| 386457 | Apr 5, 1991 | Apr 5, 1991 | Exxon Corp. | Midland | TXL D #532932398 | 9,500 |
| 386392 | Apr 4, 1991 | Apr 4, 1991 | Exxon Corp. | Panola | Alma Anderson Gas Unit #436532462 | 9,700 |
| 386195 | Apr 1, 1991 | Apr 1, 1991 | Exxon Corp. | Andrews | Parker, J. E. a/C 3A #12500336918 | 9,000 |
| 386194 | Apr 1, 1991 | Apr 1, 1991 | Exxon Corp. | Andrews | Parker, J. E. a/C 3A #12600336917 | 9,000 |
| 386089 | Mar 29, 1991 | Mar 29, 1991 | Exxon Corp. | Starr | Montalvo, N.R. #2742704828 | 4,960 |
| 386088 | Mar 27, 1991 | Mar 27, 1991 | Exxon Corp. | Kenedy | Armstrong, Charles M. (Area X) #5826130536 | 9,070 |
| 386039 | Mar 27, 1991 | Mar 27, 1991 | Exxon Corp. | Kenedy | King Ranch San Jose de la Parra #6826131099 | 11,200 |
| 386038 | Mar 27, 1991 | Mar 27, 1991 | Exxon Corp. | Kenedy | East, S.K. Mrs. "B" #4626131121 | 8,900 |
| 386040 | Mar 26, 1991 | Mar 26, 1991 | Exxon Corp. | Starr | McGill Bros. #52442732055 | 8,450 |
| 385994 | Mar 26, 1991 | Mar 26, 1991 | Exxon Corp. | Duval | White, P.E. 'B' #5313106008 | 2,551 |
| 385992 | Mar 26, 1991 | Mar 26, 1991 | Exxon Corp. | Kleberg | King Ranch Alazan #7727300686 | 8,050 |
| 385323 | Mar 26, 1991 | Mar 26, 1991 | Exxon Corp. | Upton | Giddings Estate Fee #211446133149 | 8,500 |
| 385322 | Mar 26, 1991 | Mar 26, 1991 | Exxon Corp. | Upton | Giddings Estate Fee #332146132642 | 8,500 |
| 385320 | Mar 26, 1991 | Mar 26, 1991 | Exxon Corp. | Upton | Giddings Estate Fee #211346133148 | 8,500 |
| 385993 | Mar 25, 1991 | Mar 25, 1991 | Exxon Corp. | Duval | Kohler, V. 'A' #15713136523 | 2,865 |
| 385946 | Mar 22, 1991 | Mar 22, 1991 | Exxon Corp. | Brooks | Mariposa Field Gas Unit #S 404731440 | 9,354 |
| 385757 | Mar 21, 1991 | Mar 21, 1991 | Exxon Corp. | Kenedy | King Ranch San Jose de la Parra #726130164 | 9,215 |
| 385755 | Mar 21, 1991 | Mar 21, 1991 | Exxon Corp. | Kenedy | Eask, Mrs. S. K. #10526130477 | 7,741 |
| 385756 | Mar 19, 1991 | Mar 19, 1991 | Exxon Corp. | Brooks | McGill Bros. #50404731329 | 7,905 |
| 385754 | Mar 19, 1991 | Mar 19, 1991 | Exxon Corp. | Jim Hogg | East, Mrs. Alice K. 'B' #6024731680 | 6,000 |
| 385752 | Mar 19, 1991 | Mar 19, 1991 | Exxon Corp. | Andrews | Parker, J. E. #12700336910 | 9,000 |
| 384034 | Mar 19, 1991 | Mar 19, 1991 | Exxon Corp. | Pecos | Fort Stockton Unit #31437136295 | 3,600 |
| 383889 | Mar 15, 1991 | Mar 15, 1991 | Exxon Corp. | Harris | Tomball GU 2 #720100148 | 5,579 |
| 383888 | Mar 15, 1991 | Mar 15, 1991 | Exxon Corp. | Harris | Tomball Gas Unit No. 2 #2120100069 | 5,609 |
| 383887 | Mar 15, 1991 | Mar 15, 1991 | Exxon Corp. | Harris | Tomball GU 2 #920100130 | 5,571 |
| 383886 | Mar 15, 1991 | Mar 15, 1991 | Exxon Corp. | Harris | Tomball GU 2 #2520100064 | 5,592 |
| 385335 | Mar 13, 1991 | Mar 13, 1991 | Exxon Corp. | Kleberg | King Ranch Alazan #11627300590 | 9,000 |
| 385255 | Mar 11, 1991 | Mar 11, 1991 | Exxon Corp. | Brooks | Mariposa Field Gas Unit #C 2104731597 | 10,900 |
| 385255Amendment | Mar 11, 1991 | Mar 11, 1991 | Exxon Corp. | Brooks | Mariposa Field Gas Unit #C 2104731597 | 9,040 |
| 385274 | Mar 7, 1991 | Mar 7, 1991 | Exxon Corp. | Brooks | Kleberg,r.j. Jr.tr. Viboras Past #13904731598 | 10,550 |
| 385321 | Mar 5, 1991 | Mar 5, 1991 | Exxon Corp. | Polk | Arco Mineral Fee #137330767 | 9,050 |
| 385167 | Mar 4, 1991 | Mar 4, 1991 | Exxon Corp. | Kleberg | King Ranch Alazan #31027331282 | 9,140 |
| 385167Amendment | Mar 4, 1991 | Mar 4, 1991 | Exxon Corp. | Kleberg | King Ranch Alazan #31027331282 | 9,140 |
| 385162 | Mar 4, 1991 | Mar 4, 1991 | Exxon Corp. | Calhoun | Welder, E. H. Mrs. #1605700125 | 5,480 |
| 385161 | Mar 4, 1991 | Mar 4, 1991 | Exxon Corp. | Upton | Giddings Estate Fee #347246133146 | 8,500 |
| 385133 | Mar 4, 1991 | Mar 4, 1991 | Exxon Corp. | Calhoun | Welder, P. H. 'A' #1005700136 | 5,494 |
| 384717 | Mar 1, 1991 | Mar 1, 1991 | Exxon Corp. | Calhoun | Welder, P. H. 'A' #1305700112 | 5,452 |
| 385131 | Feb 28, 1991 | Feb 28, 1991 | Exxon Corp. | Kleberg | King Ranch Alazan #40527331818 | 9,465 |
| 384950 | Feb 28, 1991 | Feb 28, 1991 | Exxon Corp. | Kleberg | King Ranch Alazan #32727331336 | 9,550 |
| 384949 | Feb 28, 1991 | Feb 28, 1991 | Exxon Corp. | Kenedy | Kleberg, R. J.,jr. Tr. Stillman #526100356 | 12,600 |
| 384946 | Feb 28, 1991 | Feb 28, 1991 | Exxon Corp. | Kleberg | King Ranch Chiltipin #3927330152 | 9,500 |
| 384046 | Feb 28, 1991 | Feb 28, 1991 | Exxon Corp. | Brooks | Kleberg,r.j.jr.tr.quiteria Past. #11904731405 | 7,950 |
| 385132 | Feb 27, 1991 | Feb 27, 1991 | Exxon Corp. | Calhoun | Welder, E. H. Mrs. #505700116 | 5,486 |
| 384908 | Feb 27, 1991 | Feb 27, 1991 | Exxon Corp. | Duval | South Lundell Gas Unit #1 #213135141 | 2,480 |
| 384908Amendment | Feb 27, 1991 | Feb 27, 1991 | Exxon Corp. | Duval | South Lundell Gas Unit #1 #213135141 | 2,480 |
| 384822 | Feb 27, 1991 | Feb 27, 1991 | Exxon Corp. | Andrews | Parker, J. E. #12400336902 | 9,000 |
| 384951 | Feb 26, 1991 | Feb 26, 1991 | Exxon Corp. | Brooks | Scott & Hopper #3804730886 | 7,700 |
| 384166 | Feb 26, 1991 | Feb 26, 1991 | Exxon Corp. | Harris | Tomball GU 1 #1320100360 | 5,588 |
| 384166Amendment | Feb 26, 1991 | Feb 26, 1991 | Exxon Corp. | Harris | Tomball GU 1 #1320100360 | 5,588 |
| 385091 | Feb 25, 1991 | Feb 25, 1991 | Exxon Corp. | Wood | Hawkins Field Unit #951549931733 | 5,000 |
| 385091Amendment | Feb 25, 1991 | Feb 25, 1991 | Exxon Corp. | Wood | Hawkins Field Unit #951549931733 | 5,000 |
| 384948 | Feb 25, 1991 | Feb 25, 1991 | Exxon Corp. | Kleberg | King Ranch Borregos #59827331817 | 7,000 |
| 384948Amendment | Feb 25, 1991 | Feb 25, 1991 | Exxon Corp. | Kleberg | King Ranch Borregos #59827331817 | 7,000 |
| 384947 | Feb 25, 1991 | Feb 25, 1991 | Exxon Corp. | Kenedy | Armstrong, Charles M. #4226130241 | 9,860 |
| 384663 | Feb 14, 1991 | Feb 14, 1991 | Exxon Corp. | Tyler | Santa FE Energy Co. #245730451 | 8,150 |
| 384663Amendment | Feb 14, 1991 | Feb 14, 1991 | Exxon Corp. | Tyler | Santa FE Energy Co. #245730451 | 8,300 |
| 384480 | Feb 14, 1991 | Feb 14, 1991 | Exxon Corp. | Brooks | Sullivan, D. J. 'F' #2704731593 | 9,550 |
| 384476 | Feb 14, 1991 | Feb 14, 1991 | Exxon Corp. | Chambers | Middleton, A.D. a/C #1 #3207101246 | 7,080 |
| 384373 | Feb 7, 1991 | Feb 7, 1991 | Exxon Corp. | Waller | Katy Gfu 1 #W 3147300335 | 1,900 |
| 384286 | Feb 5, 1991 | Feb 5, 1991 | Exxon Corp. | Harris | Tomball GU 1 #2320108021 | 5,638 |
| 384053 | Feb 4, 1991 | Feb 4, 1991 | Exxon Corp. | Midland | Turner, Mary E. "D" #332930436 | 10,980 |
| 384033 | Feb 4, 1991 | Feb 4, 1991 | Exxon Corp. | Kenedy | Sarita Field Oil & Gas Unit #10526100436 | 7,825 |
| 384001 | Feb 1, 1991 | Feb 1, 1991 | Exxon Corp. | Montgomery | Conroe Field Unit #270933930094 | 5,400 |
| 384000 | Feb 1, 1991 | Feb 1, 1991 | Exxon Corp. | Montgomery | Conroe Field Unit #292633900395 | 5,152 |
| 385385 | Jan 31, 1991 | Jan 31, 1991 | Exxon Corp. | Starr | McGill Bros. #48942731664 | 9,100 |
| 385385Amendment | Jan 31, 1991 | Jan 31, 1991 | Exxon Corp. | Starr | McGill Bros. #48942731664 | 9,100 |
| 384098 | Jan 31, 1991 | Jan 31, 1991 | Exxon Corp. | Brazoria | Smith, T.L. Jr. #303902766 | 6,750 |
| 382269 | Jan 30, 1991 | Jan 30, 1991 | Exxon Corp. | Fort Bend | Lockwood & Sharp -A- #9315731186 | 5,449 |
| 382849 | Jan 28, 1991 | Jan 28, 1991 | Exxon Corp. | Montgomery | Moore, H. N. #6133930689 | 11,000 |
| 382484 | Jan 28, 1991 | Jan 28, 1991 | Exxon Corp. | Frio | Hildebrand, Ira P. #3H16332956 | 8,625 |
| 383806 | Jan 24, 1991 | Jan 24, 1991 | Exxon Corp. | Kenedy | South May Gas Unit #4 #326131119 | 11,300 |
| 383653 | Jan 24, 1991 | Jan 24, 1991 | Exxon Corp. | Chambers | RFR Tract 224 #18507131248 | 11,182 |
| 383645 | Jan 22, 1991 | Jan 22, 1991 | Exxon Corp. | Jim Hogg | McGill Bros. #51524731606 | 8,400 |
| 383636 | Jan 22, 1991 | Jan 22, 1991 | Exxon Corp. | Kleberg | King Ranch East Laureles #B2627331947 | 8,080 |
| 383636Amendment | Jan 22, 1991 | Jan 22, 1991 | Exxon Corp. | Kleberg | King Ranch East Laureles #B2627331947 | 8,080 |
| 383422 | Jan 17, 1991 | Jan 17, 1991 | Exxon Corp. | Starr | McGill Bros. #26942700239 | 6,400 |
| 383423 | Jan 16, 1991 | Jan 16, 1991 | Exxon Corp. | Hidalgo | Santa FE Ranch #9421531663 | 7,550 |
| 383367 | Jan 16, 1991 | Jan 16, 1991 | Exxon Corp. | Fort Bend | Lockwood & Sharp -A- #6815730233 | 5,450 |
| 383178 | Jan 16, 1991 | Jan 16, 1991 | Exxon Corp. | Yoakum | Cornell Unit #6306A50133638 | 5,400 |
| 383219 | Jan 14, 1991 | Jan 14, 1991 | Exxon Corp. | Pecos | Fort Stockton Unit #31337136293 | 3,600 |
| 383198 | Jan 11, 1991 | Jan 11, 1991 | Exxon Corp. | Loving | TXL 13 "B" #230130766 | 6,300 |
| 383128 | Jan 11, 1991 | Jan 11, 1991 | Exxon Corp. | Kenedy | King Ranch San Jose de la Parra #2926130566 | 8,010 |
| 382423 | Jan 10, 1991 | Jan 10, 1991 | Exxon Corp. | Brooks | Kleberg,r.j.,jr.tr.quiteria Pas. #8904730684 | 11,207 |
| 382541 | Jan 9, 1991 | Jan 9, 1991 | Exxon Corp. | Nueces | Pita Island Field Gas Unit #2 #1035532473 | 9,811 |
| 383134 | Jan 8, 1991 | Jan 8, 1991 | Exxon Corp. | Jim Hogg | Bass, A.M.K. "B" Mrs. #1924730977 | 8,000 |
| 382846 | Jan 8, 1991 | Jan 8, 1991 | Exxon Corp. | Wood | Hawkins Field Unit #430749931727 | 4,960 |
| 382846Amendment | Jan 8, 1991 | Jan 8, 1991 | Exxon Corp. | Wood | Hawkins Field Unit #430749931727 | 4,960 |
| 382898 | Jan 7, 1991 | Jan 7, 1991 | Exxon Corp. | Andrews | Phillips Petroleum #300336873 | 11,500 |
| 382897 | Jan 7, 1991 | Jan 7, 1991 | Exxon Corp. | Andrews | Phillips Petroleum #400336872 | 11,500 |
| 382896 | Jan 7, 1991 | Jan 7, 1991 | Exxon Corp. | Andrews | Phillips Petroleum #600336871 | 11,500 |
| 382895 | Jan 7, 1991 | Jan 7, 1991 | Exxon Corp. | Andrews | Phillips Petroleum #500336870 | 11,500 |
| 382894 | Jan 7, 1991 | Jan 7, 1991 | Exxon Corp. | Andrews | Phillips Petroleum #200336869 | 11,500 |
| 382892 | Jan 7, 1991 | Jan 7, 1991 | Exxon Corp. | Andrews | Phillips Petroleum #100336868 | 11,500 |
| 382585 | Jan 4, 1991 | Jan 4, 1991 | Exxon Corp. | Brooks | Kelsey Unit #M 3 E04700975 | 6,205 |
| 382704 | Jan 2, 1991 | Jan 2, 1991 | Exxon Corp. | Fort Bend | Brazos Farms #4115731852 | 3,750 |
| 382628 | Jan 2, 1991 | Jan 2, 1991 | Exxon Corp. | Kenedy | East, S. K. Mrs #10726130678 | 10,400 |
| 382587 | Jan 2, 1991 | Jan 2, 1991 | Exxon Corp. | Starr | Montalvo, N. R. #4642730075 | 4,920 |
| 382586 | Dec 31, 1990 | Dec 31, 1990 | Exxon Corp. | Brooks | Kleberg, R.K. Jr.tr.vibros Past. #11404731255 | 8,800 |
| 382949 | Dec 28, 1990 | Dec 28, 1990 | Exxon Corp. | Waller | Kgfcu (IV) #840747330398 | 7,498 |
| 382914 | Dec 27, 1990 | Dec 27, 1990 | Exxon Corp. | Waller | Kgfcu (IV) #630447330004 | 7,703 |