| Jeneva (Navarro) #242-287-32580 | U. S. Operating, Inc. | Lee, TXGiddings (Navarro, Oil) | Not on schedule | 6,000 | Sep 8, 2010 | — | — |
| Irene (Navarro) #142-287-32541 | U. S. Operating, Inc. | Lee, TXGiddings (Navarro, Oil) | Not on schedule | 6,000 | Aug 20, 2007 | — | — |
| Darlene #142-287-30482 | U. S. Operating Inc. | Lee, TXGiddings (Austin Chalk-3) | PluggedOil | 10,000 | Mar 20, 2006 | — | — |
| Hartman #242-123-31949 | U. S. Operating, Inc. | De Witt, TX | Not on schedule | 6,200 | Sep 26, 2003 | — | — |
| Beinhorn #107342-127-33160 | U. S. Operating Inc. | Dimmit, TXCatarina SW. (Olmos) | PluggedGas | 5,400 | Jul 21, 1998 | — | — |
| Briscoe #108842-127-33159 | U. S. Operating, Inc. | Dimmit, TXCatarina, SW. (Olmos) | Not on schedule | 5,400 | Jul 17, 1998 | — | — |
| Briscoe/Hulsman #169342-127-33121 | U. S. Operating, Inc. | Dimmit, TX | Not on schedule | 5,900 | Aug 4, 1997 | — | — |
| Briscoe/Hulsman #170342-127-33120 | U. S. Operating Inc. | Dimmit, TXCatarina SW. (Olmos) | PluggedGas | 6,500 | Jul 30, 1997 | — | — |
| Josephine #2HZ42-051-33178 | U. S. Operating, Inc. | Burleson, TXGiddings (Austin Chalk-3) | Not on schedule | 10,800 | Jun 10, 1991 | — | — |
| Pietsch, Elmo #142-149-32420 | U. S. Operating, Inc. | Fayette, TXGiddings (Austin Chalk-3) | Not on schedule | 10,750 | Nov 1, 1990 | — | — |
| Northway #142-283-30724 | U. S. Operating Inc. | La Salle, TXPearsall (Austin Chalk) | PluggedOil | 8,350 | Aug 24, 1990 | — | — |
| Wilson #1HZ42-127-32903 | U. S. Operating Inc. | Dimmit, TXPearsall (Austin Chalk) | PluggedOil | 8,500 | Jul 2, 1990 | — | — |
| Selma #242-287-32241 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 9,000 | Mar 6, 1989 | — | — |
| Gladys #242-287-32221 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 9,450 | Oct 10, 1988 | — | — |
| Montez-Shackleford #642-239-32419 | U. S. Operating Inc. | Jackson, TXHigh Star (Frio) | PluggedGas | 6,000 | Jul 18, 1988 | — | — |
| Ruthie #242-287-32212 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 9,600 | Jul 18, 1988 | — | — |
| Montez-Shackelford #3 L42-239-32397 | U. S. Operating Inc. | Jackson, TXHigh Star (Frio 4700) | PluggedGas | 6,000 | Mar 1, 1988 | — | — |
| Florence #342-287-32164 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 8,800 | Jan 25, 1988 | — | — |
| Jessie #142-287-31642 | U. S. Operating Inc. | Lee, TXGiddings (Austin Chalk-3) | PluggedOil | 9,100 | Dec 31, 1987 | — | — |
| Leonhardt Unit #1 A42-149-31907 | U. S. Operating Inc. | Fayette, TXGiddings (Austin Chalk-3) | PluggedOil | 12,000 | Aug 25, 1987 | — | — |
| Montez-Shackelford #142-239-32362 | U. S. Operating Inc. | Jackson, TXHigh Star (Frio) | PluggedGas | 12,000 | Jul 22, 1987 | — | — |
| Joyce #142-287-31956 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 9,700 | May 20, 1986 | — | — |
| Matilda Unit #242-287-31953 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 9,500 | Jan 20, 1986 | — | — |
| Shimek #142-149-32093 | U. S. Operating, Inc. | Fayette, TXGiddings (Austin Chalk-3) | Not on schedule | 12,000 | Dec 31, 1985 | — | — |
| Williams, Carolyn #242-287-31900 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 9,200 | Dec 11, 1985 | — | — |
| Harriet #242-287-31999 | U. S. Operating, Inc. | Lee, TXGiddings (Austin Chalk-3) | Not on schedule | 8,700 | Nov 18, 1985 | — | — |
| Weber #142-493-31019 | U. S. Operating Inc. | Wilson, TXStockdale (Austin Chalk) | PluggedOil | 6,800 | Oct 25, 1985 | — | — |
| Gates Ranch "K" #123142-127-32715 | U. S. Operating, Inc. | Dimmit, TX | Not on schedule | 6,250 | Oct 10, 1985 | — | — |
| Gates Ranch #223142-127-32716 | U. S. Operating, Inc. | Dimmit, TX | Not on schedule | 6,250 | Oct 10, 1985 | — | — |
| Gates Ranch #223642-479-34255 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 6,250 | Sep 26, 1985 | — | — |
| Gates Ranch "K" #207142-127-32660 | U. S. Operating, Inc. | Dimmit, TX | Not on schedule | 6,250 | May 31, 1985 | — | — |
| Gates Ranch "K" #222242-479-34152 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 7,200 | May 10, 1985 | — | — |
| Gates Ranch "K" #123542-479-34149 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 7,200 | May 7, 1985 | — | — |
| Gates Ranch #407442-127-32647 | U. S. Operating Inc. | Dimmit, TXCatarina SW. (Olmos) | PluggedGas | 6,000 | Apr 17, 1985 | — | — |
| Gates Ranch #204742-479-34036 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 6,250 | Nov 26, 1984 | — | — |
| Gates Ranch #103242-479-33131 | U. S. Operating Inc. | Webb, TXCatarina SW. (San Miguel-Gas) | PluggedGas | 6,000 | Nov 7, 1984 | — | — |
| Gates Ranch "K" #122142-479-34019 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 7,000 | Nov 1, 1984 | — | — |
| Gates Ranch "K-B" #119142-127-32569 | U. S. Operating, Inc. | Dimmit, TXCatarina, SW. (Olmos) | Not on schedule | 7,000 | Oct 15, 1984 | — | — |
| Gates Ranch "K-H" #207442-127-32564 | U. S. Operating, Inc. | Dimmit, TX | Not on schedule | 7,000 | Oct 4, 1984 | — | — |
| Gates Ranch #122242-479-33992 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 6,250 | Oct 2, 1984 | — | — |
| Gates Ranch #222242-479-33993 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 6,250 | Oct 2, 1984 | — | — |
| Burns Unit #142-149-31908 | U. S. Operating Inc. | Fayette, TXGiddings (Austin Chalk-3) | PluggedOil | 11,500 | Sep 27, 1984 | — | — |
| Gates Ranch K-a #119142-127-32545 | U. S. Operating Inc. | Dimmit, TXCatarina SW. (Olmos) | PluggedGas | 7,400 | Jul 25, 1984 | — | — |
| Gates Ranch "K" #104742-479-33945 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 7,400 | Jul 25, 1984 | — | — |
| Gates Ranch "K" #223342-479-33943 | U. S. Operating, Inc. | Webb, TX | Not on schedule | 7,400 | Jul 24, 1984 | — | — |
| Vinita #142-287-31666 | U. S. Operating Inc. | Lee, TXGiddings (Austin Chalk-3) | PluggedOil | 9,900 | Jul 13, 1984 | — | — |
| O Brien #142-115-32049 | U. S. Operating Inc. | Dawson, TXTex-Sin (Devonian) | PluggedOil | 13,500 | Jun 26, 1984 | — | — |
| Heinze Otto #142-149-31770 | U. S. Operating Inc. | Fayette, TXGiddings (Austin Chalk-3) | PluggedOil | 13,500 | Apr 10, 1984 | — | — |
| Adeena #142-287-30839 | U. S. Operating Inc. | Lee, TXRailroad (Navarro) | PluggedOil | 9,000 | Mar 7, 1984 | — | — |
| Gates Ranch #111042-479-33802 | U. S. Operating Inc. | Webb, TXCatarina SW. (Olmos) | PluggedGas | 6,250 | Dec 30, 1983 | — | — |