| 602332 | Jun 21, 2005 | Jun 21, 2005 | Benson & Schoen Oil Co., Inc. | Conner "B" #2 | 5,900 | 20732495 |
| 602200 | Jun 17, 2005 | Jun 17, 2005 | Benson & Schoen Oil Co., Inc. | Conner 'B' #1 | 5,900 | 20732494 |
| 600028 | Jun 6, 2005 | Jun 6, 2005 | Oil & Gas Propertiees | Elliot, J.C. #2 | 5,600 | 20732493 |
| 600028Amendment | Jun 6, 2005 | Jun 6, 2005 | Oil & Gas Properties | Elliot, J. C. #2 | 5,600 | 20732493 |
| 600018 | Apr 30, 2005 | Apr 30, 2005 | Benson & Schoen Oil Co., Inc. | Conner "A" #1 | 5,900 | 20732492 |
| 560447 | Apr 14, 2005 | Apr 14, 2005 | Glahn Resources, Inc. | Middlebrook #1 | 5,500 | 20732491 |
| 555546 | Jan 11, 2005 | Jan 11, 2005 | Glahn Resources, Inc. | Marugg #2 | 2,800 | 20732490 |
| 551702 | Oct 7, 2004 | Oct 7, 2004 | Pickens Company, Inc., The | Hager Farms #1 | 5,500 | 20732488 |
| 551832 | Oct 6, 2004 | Oct 6, 2004 | Centaur Petroleum Corporation | JBK #7 | 3,800 | 20732489 |
| 551373 | Sep 27, 2004 | Sep 27, 2004 | Tahoe Exploration Inc. | Flow #1 | 2,500 | 20732487 |
| 551151 | Sep 17, 2004 | Sep 17, 2004 | G & F Oil, Inc. | Hendricks "F" #F 28 | 1,700 | 20732485 |
| 551150 | Sep 17, 2004 | Sep 17, 2004 | G & F Oil, Inc. | Hendricks "F" #F 27 | 1,700 | 20732486 |
| 549840 | Aug 24, 2004 | Aug 24, 2004 | All American Pipeline, L.P. | Cathodic Unit BS-49 #49 | 300 | 20732484 |
| 548405 | Jul 19, 2004 | Jul 19, 2004 | WG Operating, Inc. | Selby #1 | 3,000 | 20732482 |
| 548403 | Jul 19, 2004 | Jul 19, 2004 | WG Operating, Inc. | Carpenter Martin #1 | 3,000 | 20732483 |
| 548401 | Jul 19, 2004 | Jul 19, 2004 | WG Operating, Inc. | Farms, Berry #1 | 3,000 | 20732481 |
| 547713 | Jul 1, 2004 | Jul 1, 2004 | Gunn Oil Company | Wells #1 | 6,500 | 20732480 |
| 547239 | Jun 24, 2004 | Jun 24, 2004 | Crego Exploration | Scott, S. W. #2 | 3,000 | 20732479 |
| 546890 | Jun 17, 2004 | Jun 17, 2004 | Wilcox Oil Company | Jones, Leggett #16 | 2,900 | 20732478 |
| 545834 | May 18, 2004 | May 18, 2004 | Patton Exploration, Inc. | Winchester #1 | 4,900 | 20732477 |
| 543077 | Mar 31, 2004 | Mar 31, 2004 | Chesapeake Operating, Inc. | Cloud #208 | 6,500 | 20732476 |
| 543053 | Mar 15, 2004 | Mar 15, 2004 | S.B. Street Operating, Inc. | Nettie, Henry #3 | 5,900 | 20732475 |
| 542307 | Feb 26, 2004 | Feb 26, 2004 | Sunoco Pipeline L.P. | Cathodic Protection #12TP | 425 | 20732471 |
| 542306 | Feb 25, 2004 | Feb 25, 2004 | Sunoco Pipeline L.P. | Cathodic Protection #13TP | 425 | 20732472 |
| 542305 | Feb 25, 2004 | Feb 25, 2004 | Sunoco Pipeline L.P. | Cathodic Protection #A 11TP | 425 | 20732473 |
| 542304 | Feb 24, 2004 | Feb 24, 2004 | Sunoco Pipeline L.P. | Cathodic Protection #15TP | 425 | 20732474 |
| 536429 | Sep 16, 2003 | Sep 16, 2003 | Pickens Company, Inc., The | Watson Heirs #1 | 5,300 | 20732470 |
| 536287 | Sep 12, 2003 | Sep 12, 2003 | Centaur Petroleum Corporation | Pleasants #4C | 3,900 | 20732469 |
| 534904 | Aug 1, 2003 | Aug 1, 2003 | Quail Well Service, Inc. | Cannon #1 | 7,000 | 20732468 |
| 531968 | Jun 4, 2003 | Jun 4, 2003 | Txu Lone Star Pipeline | GB U-81 #81 | 390 | 20732466 |
| 532070 | May 28, 2003 | May 28, 2003 | Txu Lone Star Pipeline | GB U-88 #88 | 295 | 20732467 |
| 531969 | May 21, 2003 | May 21, 2003 | Txu Lone Star Pipeline | GB UE-10 #10 | 295 | 20732465 |
| 529701 | Apr 3, 2003 | Apr 3, 2003 | Crego Exploration | Scott, S. W. #1 | 5,100 | 20732464 |
| 527213 | Jan 17, 2003 | Jan 17, 2003 | Kendrick Oil and Gas Company | Hendrick, T. G. Est. #6013 | 1,800 | 20731299 |
| 525193 | Nov 5, 2002 | Nov 5, 2002 | Laneer Resources Co. | Browning-Hester #1 | 4,900 | 20732463 |
| 522994 | Sep 4, 2002 | Sep 4, 2002 | Sunoco Pipeline L.P. | Cathodic Protection TP-15A #15TP | 300 | 20732462 |
| 521219 | Jun 20, 2002 | Jun 20, 2002 | Marshall & Winston, Inc. | Davis #1 | 4,100 | 20732461 |
| 518860 | May 30, 2002 | May 30, 2002 | Sunoco Pipeline L.P. | Cathodic Protection TP-13A #13TP | 350 | 20732458 |
| 518858 | May 30, 2002 | May 30, 2002 | Sunoco Pipeline L.P. | Cathodic Protection TP-11 #11TP | 350 | 20732457 |
| 519327 | Apr 23, 2002 | Apr 23, 2002 | Txu Lone Star Pipeline | GB U-70 #70 | 350 | 20732460 |
| 518855 | Apr 16, 2002 | Apr 16, 2002 | Sunoco Pipeline L.P. | Cathodic Protection TP-14 #14TP | 350 | 20732459 |
| 518674 | Apr 4, 2002 | Apr 4, 2002 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Co. #7 | 2,950 | 20732456 |
| 516438 | Dec 28, 2001 | Dec 28, 2001 | Sloan Petroleum Inc. | White, June L. #1A | 3,000 | 20731100 |
| 512646 | Aug 20, 2001 | Aug 20, 2001 | Centaur Petroleum Corporation | JBK #8 | 3,000 | 20732396 |
| 512373 | Aug 9, 2001 | Aug 9, 2001 | D. A. B. Oil Service, Inc. | Astin "A" #4 | 2,950 | 20732454 |
| 512372 | Aug 9, 2001 | Aug 9, 2001 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Co. #6 | 2,950 | 20732455 |
| 511701 | Aug 3, 2001 | Aug 3, 2001 | Alon USA, LP | 2342+69 #16ER | 390 | 20732452 |
| 511831 | Jul 26, 2001 | Jul 26, 2001 | Patton, E. N. Oil Co., Inc. | Bettis #1B | 5,100 | 20732453 |
| 510397 | Jun 20, 2001 | Jun 20, 2001 | H-M Resource Management, Inc. | Swenson L & C #1112 | 3,200 | 20700643 |
| 509838 | Jun 7, 2001 | Jun 7, 2001 | Stovall Operating Co. | Blanks-Ratliff #1 | 5,500 | 20732451 |
| 508291 | May 7, 2001 | May 7, 2001 | Walsh & Watts, Inc. | Tibbets #1S | 1,390 | 20701419 |
| 508238 | May 2, 2001 | May 2, 2001 | Mathis & Sons, Inc. | Medford, J. #1 | 3,500 | 20732450 |
| 507202 | Apr 4, 2001 | Apr 4, 2001 | CMS Field Services, Inc. | Haskell Rectifier #1 | 350 | 20732449 |
| 507177 | Apr 3, 2001 | Apr 3, 2001 | Centaur Petroleum Corporation | Lane Unit #1 | 3,800 | 20732448 |
| 507177Amendment | Apr 3, 2001 | Apr 3, 2001 | Centaur Petroleum Corporation | Lane Unit #1 | 3,851 | 20732448 |
| 506821 | Mar 22, 2001 | Mar 22, 2001 | Kendrick Oil and Gas Company | Hendrick, T. G. Est #408 | 3,600 | 20732447 |
| 506256 | Mar 9, 2001 | Mar 9, 2001 | Kendrick Oil and Gas Company | Hendrick, T. G. Est. #2013 | 3,600 | 20732446 |
| 504895 | Feb 2, 2001 | Feb 2, 2001 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Co. #5 | 3,100 | 20732445 |
| 504349 | Jan 24, 2001 | Jan 24, 2001 | Patton, E. N. Oil Co., Inc. | Ferguson, Dow #1B | 6,100 | 20732444 |
| 502882 | Dec 14, 2000 | Dec 14, 2000 | Barbee, Inc. | Hendrick Ranch #101 | 2,000 | 20732443 |
| 502549 | Dec 5, 2000 | Dec 5, 2000 | Borden, Roland Inc. | Muellar, E. H. #5B | 2,800 | 20732441 |
| 501981 | Dec 4, 2000 | Dec 4, 2000 | D. A. B. Oil Service, Inc. | Astin "B" #1 | 3,100 | 20732442 |
| 501984 | Nov 22, 2000 | Nov 22, 2000 | D. A. B. Oil Service, Inc. | Flat Top Ranch #6024 | 4,950 | 20731532 |
| 501469 | Nov 14, 2000 | Nov 14, 2000 | Bettis, Boyle & Stovall | Cannon-Midcon #1 | 6,500 | 20732440 |
| 498788 | Aug 23, 2000 | Aug 23, 2000 | Midland Oil and Gas, Inc. | Bikini #1 | 3,500 | 20732439 |
| 498635 | Aug 21, 2000 | Aug 21, 2000 | Schkade, Louis | Hendricks #4 | 1,650 | 20731326 |
| 498078 | Aug 9, 2000 | Aug 9, 2000 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Co. #4 | 3,100 | 20732438 |
| 496587 | Jun 28, 2000 | Jun 28, 2000 | Kendrick Oil and Gas Company | Hendrick, T. G. Est #1013 | 3,600 | 20732437 |
| 495838 | Jun 7, 2000 | Jun 7, 2000 | Equilon Pipeline Co LLC | Cathodic #242MP | 400 | 20732435 |
| 495836 | Jun 7, 2000 | Jun 7, 2000 | Equilon Pipeline Co LLC | Cathodic #235MP | 400 | 20732436 |
| 495707 | Jun 7, 2000 | Jun 7, 2000 | Herring, Ray | Cobb, Naude #1 | 4,000 | 20732434 |
| 492875 | Mar 14, 2000 | Mar 14, 2000 | Tankersley, D. C. | Stremmel, Herbert #1 | 3,000 | 20732433 |
| 492875Amendment | Mar 14, 2000 | Mar 14, 2000 | Tankersley, D. C. | Stremmel, Herhert #1 | 3,000 | 20732433 |
| 491763 | Feb 15, 2000 | Feb 15, 2000 | Foster, Charles R. Co. | Medford, J. #1 | 3,000 | 20732432 |
| 490982 | Jan 12, 2000 | Jan 12, 2000 | Herring, Ray | Early Ranch #1 | 5,500 | 20732431 |
| 490780 | Jan 10, 2000 | Jan 10, 2000 | RO-JO, Inc. | Robertson, H. L. #6D | 2,500 | 20732429 |
| 490823 | Jan 6, 2000 | Jan 6, 2000 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Co #3 | 3,000 | 20732430 |
| 490276 | Dec 10, 1999 | Dec 10, 1999 | Heart Land Petroleum Corporation | Haskell #1 | 6,000 | 20732107 |
| 489727 | Dec 10, 1999 | Dec 10, 1999 | Centaur Petroleum Corporation | Pace #1 | 3,680 | 20732295 |
| 489734 | Nov 23, 1999 | Nov 23, 1999 | Centaur Petroleum Corporation | Pace #2 | 4,000 | 20732428 |
| 489070 | Nov 2, 1999 | Nov 2, 1999 | Heart Land Petroleum Corporation | Cannon #1 | 5,990 | 20732107 |
| 488957 | Oct 28, 1999 | Oct 28, 1999 | Myco Industries, Inc. | Myco Thomas #1 | 4,950 | 20732427 |
| 488815 | Oct 27, 1999 | Oct 27, 1999 | D. A. B. Oil Service, Inc. | Astin "A" #2 | 2,950 | 20732426 |
| 488648 | Oct 20, 1999 | Oct 20, 1999 | Myco Industries, Inc. | Myco Hester #1 | 4,950 | 20732425 |
| 488397 | Oct 18, 1999 | Oct 18, 1999 | Denton Exploration, Inc. | Helton #1DX | 6,100 | 20732424 |
| 487001 | Sep 3, 1999 | Sep 3, 1999 | Stovall Operating Co. | Paint Creek Unit #1 | 2,990 | 20732423 |
| 485875 | Jul 19, 1999 | Jul 19, 1999 | Centaur Petroleum Corporation | South Lane #2 | 3,900 | 20732422 |
| 485352 | Jun 24, 1999 | Jun 24, 1999 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Co. #2 | 3,000 | 20732421 |
| 484566 | May 18, 1999 | May 18, 1999 | Centaur Petroleum Corporation | Lane B #3 | 3,950 | 20732420 |
| 483455 | Apr 6, 1999 | Apr 6, 1999 | Centaur Petroleum Corporation | Pace #4 | 4,000 | 20701500 |
| 482212 | Jan 22, 1999 | Jan 22, 1999 | Neeley, June | Early-6 #2 | 5,000 | 20732419 |
| 482013 | Jan 13, 1999 | Jan 13, 1999 | Neeley, June | Early-6 #1 | 5,000 | 20732290 |
| 480701 | Nov 10, 1998 | Nov 10, 1998 | 3-T Exploration, Inc. | Lefevre-State Unit #1 | 6,050 | 20732418 |
| 480622 | Nov 4, 1998 | Nov 4, 1998 | Centaur Petroleum Corporation | South Lane #1 | 4,000 | 20732417 |
| 480416 | Oct 23, 1998 | Oct 23, 1998 | Harding Company | Riewe #1 | 6,300 | 20732416 |
| 480081 | Oct 19, 1998 | Oct 19, 1998 | Centaur Petroleum Corporation | Hisey #4 | 6,000 | 20732415 |
| 479676 | Sep 28, 1998 | Sep 28, 1998 | D. A. B. Oil Service, Inc. | Astin "A" #1 | 3,000 | 20732414 |
| 479675 | Sep 28, 1998 | Sep 28, 1998 | D. A. B. Oil Service, Inc. | Swenson Land & Cattle Company #1 | 3,000 | 20700613 |
| 479429 | Sep 15, 1998 | Sep 15, 1998 | Centaur Petroleum Corporation | Campbell #3 | 4,000 | 20701359 |
| 478238 | Aug 3, 1998 | Aug 3, 1998 | Titan Energy, Inc. | Hester #16 | 4,999 | 20732412 |