| Pharr Fieldwide Unit G-4-164196 | Fina Oil & Chemical Company | Pharr (Hensley) | Hidalgo | 1 | 64.9K | 3.62M | Dec 1996 – Apr 1998 |
| Slick, T.B. Estate G-4-142819 | Fina Oil & Chemical Company | Hinde (Vicksburg 20) | Starr | 1 | 41.5K | 1.47M | Jan 1993 – Feb 1999 |
| Slick, T. B. Estate G-4-173140 | Fina Oil & Chemical Company | Borosa, S. (Vicksburg 5) | Starr | 1 | 36K | 188K | Jun 1998 – Feb 2000 |
| Keirn, Pearl G-4-157999 | Fina Oil & Chemical Company | McAllen (6900) | Hidalgo | 1 | 28.4K | 250K | Nov 1995 – Oct 1996 |
| Fina Conoco Fee G-4-159772 | Fina Oil & Chemical Company | Frost (Frio 14) | Starr | 1 | 27.6K | 53.4K | Oct 1995 – Jul 1997 |
| Fina Conoco Fee G-4-154156 | Fina Oil & Chemical Company | Frost, North (Orive) | Starr | 1 | 25.2K | 472K | Dec 1994 – May 1998 |
| State Tract -155- O-4-251 | Fina Oil & Chemical Company | Bird Island | Kleberg | 1 | 23.6K | 157K | Jan 1993 – Jul 2000 |
| Slick, T.B. Estate G-4-141908 | Fina Oil & Chemical Company | Hinde (Vicksburg 21) | Starr | 1 | 22.9K | 1.26M | Jan 1993 – Nov 1998 |
| McAllen Fieldwide Unit G-4-154915 | Fina Oil & Chemical Company | McAllen (Crutchfield) | Hidalgo | 1 | 21K | 2.02M | Jan 1995 – Oct 1999 |
| Volz, Fred W. Sr. Unit G-4-171032 | Fina Oil & Chemical Company | Tabasco (T) | Hidalgo | 1 | 18.6K | 266K | Sep 1998 – Sep 1999 |
| Slick, T.B. Estate G-4-141935 | Fina Oil & Chemical Company | Hinde (Vicksburg 21) | Starr | 1 | 16.2K | 705K | Jan 1993 – Mar 1996 |
| Slick, T. B. Estate G-4-169215 | Fina Oil & Chemical Company | Hinde (Vicksburg 21) | Starr | 1 | 15.7K | 83.8K | Aug 1997 – Jul 1998 |
| Slick, T. B. Estate G-4-117936 | Fina Oil & Chemical Company | Hinde (Vicksburg 21) | Starr | 1 | 15.4K | 541K | Jan 1993 – May 1996 |
| Slick, T.B. Estate G-4-140565 | Fina Oil & Chemical Company | Hinde (Vicksburg 20) | Starr | 1 | 14.1K | 239K | Jan 1993 – Aug 1995 |
| McAllen Fieldwide Unit G-4-163493 | Fina Oil & Chemical Company | McAllen, West (Card) | Hidalgo | 1 | 13.6K | 1.85M | Mar 1996 – Dec 1998 |
| Fina-Conoco Fee G-4-154813 | Fina Oil & Chemical Company | Frost (Vicksburg 7300) | Starr | 1 | 12.9K | 228K | Dec 1994 – Sep 1997 |
| Slick, T. B. Estate G-4-161278 | Fina Oil & Chemical Company | El Ebanito (Vicksburg 6) | Starr | 1 | 12.4K | 344K | May 1996 – May 1998 |
| Chapa, David G-4-160424 | Fina Oil & Chemical Company | Tabasco (T) | Hidalgo | 1 | 12.3K | 235K | May 1996 – Dec 1998 |
| McAllen Fieldwide Unit G-4-150565 | Fina Oil & Chemical Company | McAllen (9400) | Hidalgo | 1 | 12.2K | 345K | Feb 1994 – Apr 1998 |
| Slick, T.B. Estate G-4-141937 | Fina Oil & Chemical Company | Hinde (Vicksburg 21) | Starr | 1 | 11.7K | 196K | Jan 1993 – Mar 1995 |
| Pharr Fieldwide Unit G-4-33210 | Fina Oil & Chemical Company | Pharr (FB-C, Bond) | Hidalgo | 1 | 11.6K | 1.37M | Jan 1993 – Dec 1997 |
| Slick, T.B. Estate G-4-161599 | Fina Oil & Chemical Company | Hinde (Vicksburg 20) | Starr | 1 | 11.3K | 229K | Jun 1996 – Jan 1998 |
| Fred W. Volz Sr. Unit G-4-143163 | Fina Oil & Chemical Company | Tabasco (T) | Hidalgo | 1 | 11K | 418K | Jan 1993 – Jul 2000 |
| Slick, T.B. Estate G-4-99672 | Fina Oil & Chemical Company | Hinde (Vicksburg 23) | Starr | 1 | 10.8K | 627K | Jan 1993 – Dec 1998 |
| Slick, T.B. Estate G-4-142821 | Fina Oil & Chemical Company | Hinde (Vicksburg 11) | Starr | 1 | 10.7K | 143K | Jan 1993 – Jan 1995 |
| Gulley, M. E. O-6-11904 | Fina Oil & Chemical Company | Bethany (Travis Peak-Gulley Sd.) | Panola | 1 | 9.76K | 29 | Jan 1993 – Apr 1996 |
| Slick, T.B. Estate G-4-155839 | Fina Oil & Chemical Company | Hinde (Vicksburg 23) | Starr | 1 | 9.68K | 365K | Sep 1995 – Nov 1998 |
| Slusser, L. L. Unit G-4-38847 | Fina Oil & Chemical Company | Edinburg, S. (Marks 11100) | Hidalgo | 1 | 8.73K | 260K | Jan 1993 – Nov 1999 |
| Fina Conoco Fee G-4-131896 | Fina Oil & Chemical Company | Frost, North (Ashby) | Starr | 1 | 8.72K | 368K | Jan 1993 – Aug 1996 |
| West McAllen G-4-155005 | Fina Oil & Chemical Company | McAllen, West (Card) | Hidalgo | 1 | 8.28K | 1.92M | Dec 1994 – May 1996 |
| Lawless G-6-147300 | Fina Oil & Chemical Company | Bethany, East (Cotton Valley) | Panola | 1 | 8.06K | 303K | May 1993 – Apr 1997 |
| McAllen, A. A. G-4-101373 | Fina Oil & Chemical Company | McAllen Ranch(vicksburg-U-V-,se) | Hidalgo | 1 | 7.86K | 874K | Jan 1993 – Oct 1994 |
| Fina-Conoco Fee G-4-133179 | Fina Oil & Chemical Company | Frost, West (VX-Wood) | Starr | 1 | 7.45K | 648K | Jan 1993 – May 1998 |
| Urschel, C.F. G-4-135541 | Fina Oil & Chemical Company | Urschel (Ashby FB II) | Starr | 1 | 7.35K | 457K | Jan 1993 – Jul 1996 |
| Pharr Fieldwide Unit G-4-136858 | Fina Oil & Chemical Company | McAllen (Hansen) | Hidalgo | 1 | 7.07K | 222K | Jan 1993 – May 1999 |
| Slick, T.B. Estate G-4-162709 | Fina Oil & Chemical Company | Hinde (Frio Stray) | Starr | 1 | 6.53K | 85.6K | May 1996 – May 1999 |
| Keirn, Pearl O-4-12644 | Fina Oil & Chemical Company | McAllen (6900) | Hidalgo | 1 | 6.5K | 15K | Nov 1996 – Jun 1997 |
| McAllen Fieldwide Unit G-4-55187 | Fina Oil & Chemical Company | McAllen (Marks) | Hidalgo | 1 | 6.43K | 408K | Jan 1993 – May 1997 |
| Volz, Fred W., Sr., Unit G-4-14553 | Fina Oil & Chemical Company | Tabasco (8500) | Hidalgo | 1 | 6.28K | 255K | Jan 1993 – Aug 1998 |
| Fina Conoco Fee G-4-151203 | Fina Oil & Chemical Company | Frost,north (Rincon) | Starr | 1 | 5.55K | 222K | Aug 1994 – May 1998 |
| Lawless Unit G-6-143517 | Fina Oil & Chemical Company | Bethany, East (Cotton Valley) | Panola | 1 | 5.53K | 763K | Jan 1993 – Apr 1999 |
| Fina-Conoco Fee G-4-138024 | Fina Oil & Chemical Company | Frost, North (Ashby FB III) | Starr | 1 | 5.5K | 211K | Jan 1993 – Feb 1994 |
| Fina Conoco Fee G-4-130638 | Fina Oil & Chemical Company | Frost, West (VX-Wood) | Starr | 1 | 5.42K | 667K | Jan 1993 – Jan 1997 |
| McAllen Fieldwide Unit G-4-37174 | Fina Oil & Chemical Company | McAllen (Marks FB B) | Hidalgo | 1 | 4.96K | 433K | Feb 1993 – Sep 1994 |
| Slick, T. B Estate G-4-160377 | Fina Oil & Chemical Company | Borosa (Vicksburg # 5, S.) | Starr | 1 | 4.95K | 541K | May 1996 – Jul 1999 |
| Slick, T. B Estate G-4-161264 | Fina Oil & Chemical Company | El Ebanito (Vicksburg 11) | Starr | 1 | 4.83K | 409K | May 1996 – Aug 1999 |
| State Tract -181- O-4-10851 | Fina Oil & Chemical Company | Bird Island (10-a Seg A) | Kleberg | 1 | 4.65K | 16.1K | Jan 1993 – Aug 1995 |
| Slick, T.B. Estate G-4-143019 | Fina Oil & Chemical Company | Hinde (Vicksburg 21) | Starr | 1 | 4.29K | 59.8K | Jan 1993 – Dec 1993 |
| Mc Allen Fieldwide Unit G-4-69102 | Fina Oil & Chemical Company | McAllen (Grissom 7900) | Hidalgo | 1 | 4.17K | 267K | Jan 1993 – Apr 1996 |
| Floyd Unit G-6-80203 | Fina Oil & Chemical Company | Bethany (Travis Peak 6400, Gas) | Panola | 1 | 3.77K | 1.6M | Jan 1993 – Mar 1996 |