| Buffalo Valley 8 State #00130-005-63802 | Harvard Petroleum Company, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 9,100 | Jan 23, 2006 | 0 | 1,771 |
| Irish Stout State Com #00130-005-63773 | Extex Operating Company only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,480 | Sep 28, 2005 | 0 | 274 |
| Lazarus Federal #00130-005-63780 | Riley Permian Operating Company, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,720 | Sep 7, 2005 | 0 | 6,958 |
| Otter Federal #00130-005-63720 | SDX Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | CanceledOil | 9,000 | Nov 16, 2004 | 0 | 0 |
| Ten Mile Bbe State Com #00130-005-63509 | EOG Resources Inc only | ChavesWindmill; Morrow (G) | PluggedGas | 9,151 | Oct 21, 2002 | 0 | 0 |
| Chester Ayc State #00130-005-63396 | EOG y Resources, Inc. only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 9,508 | Jun 3, 2001 | 0 | 0 |
| Stock Tank 15 Federal Com #00130-005-63371 | Devon Energy Production Company, LP only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 9,290 | Apr 5, 2001 | 0 | 0 |
| Windmill Ati State #00430-005-63313 | EOG y Resources, Inc. only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 10,167 | Nov 19, 2000 | 0 | 0 |
| Windmill Ati State #00230-005-63245 | EOG Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 9,528 | May 8, 2000 | 0 | 0 |
| Windmill Ati State #00130-005-63223 | EOG y Resources, Inc. only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 9,320 | Aug 24, 1999 | 0 | 0 |
| Cut Dawg Federal Com #00130-005-62772 | M E W Enterprise only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,145 | Dec 9, 1998 | 0 | 0 |
| Harris Federal #01130-005-63087 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 9,050 | May 6, 1996 | 0 | 7,730 |
| Mojave Federal #00130-005-62846 | Siete Oil & Gas Corp only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Nov 1, 1991 | 0 | 0 |
| Langley Federal #00530-005-62863 | Read & Stevens Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Nov 1, 1991 | 0 | 0 |
| State BTA #00130-005-62670 | Havenor Operating Co only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 8,560 | Dec 1, 1990 | 0 | 0 |
| Redwall State Com #00130-005-62688 | Primero Operating Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Jan 1, 1990 | 0 | 0 |
| Tanner Federal #00130-005-62701 | Snow Oil & Gas Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,580 | Oct 1, 1989 | 0 | 0 |
| Harris Federal #01030-005-62604 | Read & Stevens Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Sep 1, 1988 | 0 | 0 |
| Salt Grass WS Fed #00130-005-61945 | EOG Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 8,460 | Mar 1, 1988 | 0 | 0 |
| Toles Federal #00230-005-62271 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | Aug 1, 1986 | 0 | 1,200 |
| Langlie Federal Com #00330-005-62266 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | Mar 1, 1986 | 0 | 8,401 |
| Brotar Federal #00330-005-61825 | Slayton Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 9,300 | Oct 3, 1984 | 1 | 0 |
| Rose Federal #00430-005-61597 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | May 1, 1983 | 0 | 4,341 |
| Harris Federal #00830-005-61372 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,934 | Feb 1, 1983 | 0 | 11,513 |
| Harris Federal #00930-005-61373 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,845 | Feb 1, 1983 | 2 | 17,972 |
| Harris Federal Com #00630-005-61038 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | Feb 1, 1982 | 0 | 7,930 |
| Harris Federal #00430-005-60781 | Read & Stevens Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Oct 1, 1981 | 0 | 0 |
| Harris Federal Com #00530-005-60798 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 9,068 | Oct 1, 1981 | 0 | 1,373 |
| Long Arroyo MQ Federal Com #00130-005-60666 | EOG Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 8,500 | Nov 1, 1980 | 0 | 0 |
| Mewbourne State 25 Com #00130-005-60577 | Jack J. Grynberg only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 8,363 | Apr 1, 1980 | 0 | 0 |
| Brotar Com #00130-005-60542 | Slayton Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 9,397 | Dec 1, 1979 | 0 | 0 |
| R and S Federal Com #00130-005-60511 | North Fork Operating, LP only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 9,185 | Jul 1, 1979 | 0 | 0 |
| Lula #00330-005-60481 | Read & Stevens Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Nov 1, 1978 | 0 | 0 |
| R and S State #00130-005-60424 | WPX Energy Permian, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | 9,137 | Oct 1, 1977 | 0 | 0 |
| Lula #00230-005-60415 | Matador Operating Co only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Aug 1, 1977 | 0 | 0 |
| Hondo State Com #00130-005-60059 | Slayton Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,514 | Jun 1, 1977 | 0 | 0 |
| Bogle State Com #00130-005-60389 | Dominion Oklahoma Texas Expl. & Prod Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | Jun 1, 1977 | 0 | 0 |
| Harris Federal Com #00230-005-60277 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,966 | Oct 1, 1975 | 0 | 3,401 |
| Rose #00130-005-60299 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | Oct 1, 1975 | 0 | 14,013 |
| State Com #00130-005-60302 | Slayton Resources Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,350 | Jun 1, 1975 | 0 | 0 |
| Langley Com #00130-005-60253 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | Dec 1, 1973 | 0 | 7,566 |
| Buffalo Valley Com #00130-005-60014 | Read & Stevens Inc only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | — | 0 | 0 |
| Clements Buffalo Valley Penn #00130-005-60034 | Harvard Petroleum Company, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,354 | — | 0 | 11 |
| Buffalo Valley #00230-005-60037 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,374 | — | 0 | 813 |
| Buffalo Valley Com #00230-005-60086 | Bledsoe Petro Corp only | ChavesBuffalo Valley; Penn (Prorated Gas) | PluggedGas | — | — | 0 | 0 |
| Trobough Com #00130-005-60104 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,590 | — | 0 | 2,768 |
| Hurd #00130-005-60112 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | — | — | 0 | 25 |
| Midwest Com #00130-005-60128 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,670 | — | 0 | 12,021 |
| Trobaugh a State Com #00130-005-60155 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,790 | — | 0 | 7,820 |
| Piatt State Com #00130-005-60160 | 3R Operating, LLC only | ChavesBuffalo Valley; Penn (Prorated Gas) | ActiveGas | 8,842 | — | 0 | 1,338 |