| Kynette P. #3342-311-33595 | Atlas Operating LLC | McMullen, TXCampana South | ActiveInjection | 3,638 | Jul 3, 2000 | — | — |
| Kynette P. #3242-311-33596 | Atlas Operating LLC | McMullen, TXCampana South | Shut inOil | 3,575 | Jul 3, 2000 | — | — |
| Kynette P. #3442-311-33597 | Atlas Operating LLC | McMullen, TXCampana South | Shut inOil | 3,582 | Jul 3, 2000 | — | — |
| Champion Int L. a-143 #2HHZ42-351-30704 | Atlas Operating LLC | Newton, TXBrookeland (Austin Chalk 8800) | ActiveOil | 12,283 | Jun 22, 2000 | — | — |
| Bennett Mills Estate Fee #6442-047-31897 | Atlas Operating LLC | Brooks, TXMills Bennett (Consolidated) | ActiveOil | 3,720 | Jun 7, 2000 | — | — |
| Wagner Gas Unit #1HHZ42-123-30405 | Atlas Operating LLC | De Witt, TXKawitt (Edwards) | ActiveGas | 14,500 | May 31, 2000 | — | — |
| Turlington GU #2 #242-213-30417 | Atlas Operating LLC | Henderson, TXTurlington | ActiveGas | 9,214 | May 10, 2000 | — | — |
| Goldsmith J. B. #5442-499-31949 | Atlas Operating LLC | Wood, TXQuitman | ActiveInjection | 6,500 | Apr 26, 2000 | — | — |
| Angelina Unit a-19 #1HZ42-241-30670 | Atlas Operating LLC | Jasper, TXBrookeland (Austin Chalk 8800) | ActiveGas | 10,510 | Apr 13, 2000 | — | — |
| Goldsmith-Landreth/San Andres/UT #3642-135-06228 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,000 | Mar 31, 2000 | — | — |
| Goldsmith-Landreth/San Andres/UT #31742-135-31771 | Atlas Operating LLC | Ector, TXGoldsmith | PluggedOil | 4,000 | Mar 31, 2000 | — | — |
| Goldsmith J. B. #1642-499-00788 | Atlas Operating LLC | Wood, TXQuitman (Sub-Clarksville) | Shut inOil | 6,385 | Mar 29, 2000 | — | — |
| Goldsmith J. B. #5542-499-31945 | Atlas Operating LLC | Wood, TXQuitman | Shut inOil | 6,500 | Mar 29, 2000 | — | — |
| Henson Gas Unit #2HHZ42-285-32777 | Atlas Operating LLC | Lavaca, TXYoakum (Edwards) | ActiveGas | 14,124 | Feb 16, 2000 | — | — |
| Donner Brown Unit a-1006 #1HZ42-241-30668 | Atlas Operating LLC | Jasper, TXBrookeland (Austin Chalk 8800) | ActiveGas | 11,370 | Jan 27, 2000 | — | — |
| Patterson #242-499-31939 | Atlas Operating LLC | Wood, TXQuitman (Woodbine) | Shut inOil | 4,700 | Jan 26, 2000 | — | — |
| Hill A. G. #342-289-31309 | Atlas Operating LLC | Leon, TXJewett (Travis Peak) | ActiveGas | 10,515 | Dec 14, 1999 | — | — |
| Goldsmith J. B. a #142-499-31937 | Atlas Operating LLC | Wood, TXQuitman (Woodbine) | ActiveOil | 4,598 | Dec 3, 1999 | — | — |
| Vastar Fee Unit a-910 #1HZ42-241-30666 | Atlas Operating LLC | Jasper, TXBrookeland (Austin Chalk 8800) | ActiveGas | 11,858 | Dec 2, 1999 | — | — |
| Henson Gas Unit #1HHZ42-123-00017 | Atlas Operating LLC | De Witt, TXYoakum (Edwards) | ActiveGas | 14,360 | Nov 8, 1999 | — | — |
| Patterson #142-499-31935 | Atlas Operating LLC | Wood, TXQuitman (Woodbine) | ActiveOil | 4,692 | Nov 5, 1999 | — | — |
| Bennett Mills Estate Fee #6142-047-31871 | Atlas Operating LLC | Brooks, TXMills Bennett (Consolidated) | Temporarily abandonedGas | 4,775 | Sep 29, 1999 | — | — |
| Goldsmith J. B. #5342-499-31920 | Atlas Operating LLC | Wood, TXQuitman (Woodbine) | ActiveOil | 4,666 | Sep 29, 1999 | — | — |
| Bennett Mills Estate Fee #2042-047-00399 | Atlas Operating LLC | Brooks, TXMills Bennett (Consolidated) | ActiveOil | 6,028 | Sep 21, 1999 | — | — |
| Temple-Inland Unit a-601 #1HZ42-241-30664 | Atlas Operating LLC | Jasper, TXBrookeland (Austin Chalk 8800) | ActiveGas | 11,531 | Sep 13, 1999 | — | — |
| Goldsmith J. B. #4642-499-31896 | Atlas Operating LLC | Wood, TXQuitman (Sub-Clarksville) | ActiveOil | 8,648 | Aug 31, 1999 | — | — |
| Reinecke Unit #27642-033-31241 | Atlas Operating LLC | Borden, TXReinecke | Shut inOil | 7,041 | Aug 26, 1999 | — | — |
| Reinecke Unit #27742-033-31250 | Atlas Operating LLC | Borden, TXReinecke | ActiveOil | 7,039 | Aug 26, 1999 | — | — |
| Reinecke Unit #26842-033-31274 | Atlas Operating LLC | Borden, TXReinecke | Shut inOil | 7,035 | Aug 26, 1999 | — | — |
| Reinecke Unit #25542-033-31382 | Atlas Operating LLC | Borden, TXReinecke | PluggedOil | 7,041 | Aug 26, 1999 | — | — |
| Allison #142-289-31303 | Atlas Operating LLC | Leon, TXWonderland (Bossier Sand) | ActiveGas | 15,757 | Aug 26, 1999 | — | — |
| Herrera Gregorio et al #642-311-32846 | Atlas Operating LLC | McMullen, TXSan Miguel Creek (Wilcox Cons.) | ActiveInjection | 5,671 | Aug 9, 1999 | — | — |
| Katz (Strawn) Unit #212142-269-32345 | Atlas Operating LLC | King, TXKatz (Strawn) | PluggedOil | 5,300 | Aug 5, 1999 | — | — |
| Kuester Unit #1HHZ42-123-31782 | Atlas Operating LLC | De Witt, TXYoakum (Edwards) | ActiveGas | 16,353 | Jul 12, 1999 | — | — |
| Katz (Strawn) Unit #30342-433-01621 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | PluggedOil | 5,154 | Jul 7, 1999 | — | — |
| Edinburg Improvement Association #342-215-32037 | Atlas Operating LLC | Hidalgo, TXTexan Gardens-Tabasco N. (Cons) | Temporarily abandonedGas | 10,016 | Jul 1, 1999 | — | — |
| Corby #3 Gas Unit #142-289-31298 | Atlas Operating LLC | Leon, TXLac (Rodessa 8200) | ActiveGas | 9,600 | Mar 3, 1999 | — | — |
| Nolan D Fee #242-353-32647 | Atlas Operating LLC | Nolan, TXE. A. (Dolomite) | PluggedOil | 6,500 | Feb 8, 1999 | — | — |
| Reinecke Unit #8642-033-00439 | Atlas Operating LLC | Borden, TXReinecke | Shut inOil | 7,030 | Dec 28, 1998 | — | — |
| Katz (Strawn) Unit #292142-433-33160 | Atlas Operating LLC | Stonewall, TXKatz (Strawn) | PluggedOil | 6,100 | Nov 23, 1998 | — | — |
| McCreight G. A. #542-499-31911 | Atlas Operating LLC | Wood, TXQuitman (Woodbine) | Shut inOil | 4,550 | Oct 26, 1998 | — | — |
| Corby #2 Gas Unit #142-289-31294 | Atlas Operating LLC | Leon, TXLac (Rodessa) | ActiveGas | 7,987 | Oct 7, 1998 | — | — |
| Goldsmith J. B. #5242-499-31904 | Atlas Operating LLC | Wood, TXQuitman (Woodbine) | Shut inOil | 4,572 | Sep 10, 1998 | — | — |
| Harcrow S #142-289-31246 | Atlas Operating LLC | Leon, TXJewett (Travis Peak) | ActiveGas | 9,788 | Jul 27, 1998 | — | — |
| Willingham #142-289-31291 | Atlas Operating LLC | Leon, TXJewett W. (Cotton Valley Lime) | ActiveGas | 16,110 | Jun 30, 1998 | — | — |
| Johnson B.L. #1 R42-499-31651 | Atlas Operating LLC | Wood, TXQuitman (Eagle Ford) | ActiveOil | 6,395 | May 19, 1998 | — | — |
| Newcomer Charles G. #242-211-32283 | Atlas Operating LLC | Hemphill, TXHiggins South (Morrow) | ActiveGas | 12,225 | Apr 28, 1998 | — | — |
| Sharp A. L. #242-289-31289 | Atlas Operating LLC | Leon, TXJewett (Travis Peak) | ActiveGas | 10,400 | Apr 13, 1998 | — | — |
| I. P. Farms #142-039-32539 | Atlas Operating LLC | Brazoria, TXChocolate Bayou N.(andrau Stray) | Temporarily abandonedGas | 13,500 | Apr 9, 1998 | — | — |
| Sansing Roy #242-295-32431 | Atlas Operating LLC | Lipscomb, TXHiggins South (Morrow) | ActiveGas | 11,900 | Apr 9, 1998 | — | — |