| divested | 375290 | 42-165-34180 | DRILL | DOSS LEASE | GAINES | 1990-12-10 | to: BLOCK T PETROLEUM INC. |
| divested | 290083 | 42-461-32510 | DRILL | COWDEN | UPTON | 1985-11-11 | to: PIONEER NATURAL RES. USA INC. |
| divested | 289995 | 42-461-32508 | DRILL | CONNELL | UPTON | 1985-11-07 | to: PIONEER NATURAL RES. USA INC. |
| divested | 289994 | 42-461-32507 | DRILL | WINDHAM | UPTON | 1985-11-07 | to: PIONEER NATURAL RES. USA INC. |
| divested | 275148 | 42-461-32409 | DRILL | HIRSCH "B" | UPTON | 1985-05-15 | to: PIONEER NATURAL RES. USA INC. |
| divested | 255465 | 42-461-32288 | DRILL | LINK | UPTON | 1984-10-22 | to: PIONEER NATURAL RES. USA INC. |
| divested | 255466 | 42-461-32289 | DRILL | LINK | UPTON | 1984-10-22 | to: PIONEER NATURAL RES. USA INC. |
| divested | 254566 | 42-461-32282 | DRILL | HIRSCH "A" | UPTON | 1984-10-16 | to: PIONEER NATURAL RES. USA INC. |
| divested | 253194 | 42-461-32275 | DRILL | POWELL | UPTON | 1984-10-02 | to: GRUSS PETROLEUM MANAGEMENT INC. |
| divested | 245304 | 42-461-32211 | DRILL | HIRSCH "B" | UPTON | 1984-07-17 | to: PIONEER NATURAL RES. USA INC. |
| divested | 245301 | 42-461-32210 | DRILL | HIRSCH "B" | UPTON | 1984-07-17 | to: PIONEER NATURAL RES. USA INC. |
| divested | 241118 | 42-317-32950 | DRILL | SNYDER "C" | MARTIN | 1984-06-05 | to: GRUSS PETROLEUM MANAGEMENT INC. |
| divested | 224951 | 42-461-32130 | DRILL | HIRSCH "B" | UPTON | 1983-12-29 | to: PIONEER NATURAL RES. USA INC. |
| divested | 218704 | 42-329-31237 | DRILL | SNYDER "B" | MIDLAND | 1983-10-25 | to: GRAHAM ROYALTY LTD. |
| divested | 185559 | 42-317-32674 | DRILL | KELLY | MARTIN | 1983-02-04 | to: PIONEER NATURAL RES. USA INC. |
| divested | 183459 | 42-317-32663 | DRILL | NANCE | MARTIN | 1983-01-18 | to: PIONEER NATURAL RES. USA INC. |
| filed | 151105 | 42-177-31246 | DRILL | WHEAT, NATHAN | GONZALES | 1982-02-17 | — |
| divested | 101635 | 42-383-31819 | DRILL | HICKMAN | REAGAN | 1980-12-10 | to: RHR OIL & GAS LLC |
| divested | 97520 | 42-383-31788 | DRILL | HICKMAN | REAGAN | 1980-10-30 | to: RHR OIL & GAS LLC |
| divested | 97521 | 42-383-31789 | DRILL | HICKMAN | REAGAN | 1980-10-30 | to: RHR OIL & GAS LLC |