| 634143 | Mar 2, 2007 | Mar 2, 2007 | EOG Resources, Inc. | Burt Trust Unit #3HH21730455 | 9,000 |
| 634141 | Mar 2, 2007 | Mar 2, 2007 | EOG Resources, Inc. | Burt Trust Unit #2HH21730454 | 9,000 |
| 634102 | Mar 1, 2007 | Mar 1, 2007 | EOG Resources, Inc. | Burt Trust Unit #1HH21730453 | 9,000 |
| 634124 | Feb 23, 2007 | Feb 23, 2007 | Salty's Management, L.L.C. | Salty's Hill County SWD #121730452 | 9,800 |
| 634124Amendment | Feb 23, 2007 | Feb 23, 2007 | Salty's Management, L.L.C. | Salty's Hill County SWD #121730452 | 10,500 |
| 634124Amendment | Feb 23, 2007 | Feb 23, 2007 | Salty's Disposal Wells, LP | Salty's Hill County SWD #121730452 | 10,500 |
| 633156 | Feb 12, 2007 | Feb 12, 2007 | Atmos Pipeline - Texas | G.B. M11-33 #3321730450 | 500 |
| 633151 | Feb 12, 2007 | Feb 12, 2007 | Atmos Pipeline - Texas | G.B. M11-21 #2121730451 | 500 |
| 632029 | Jan 19, 2007 | Jan 19, 2007 | EOG Resources, Inc. | Kimbrell Unit #3HH21730449 | 9,000 |
| 632029Amendment | Jan 19, 2007 | Jan 19, 2007 | EOG Resources, Inc. | Kimbrell Unit #3HH21730449 | 9,000 |
| 631293 | Jan 4, 2007 | Jan 4, 2007 | Chesapeake Operating, Inc. | Dan Miller #1HH21730448 | 9,000 |
| 630213 | Dec 8, 2006 | Dec 8, 2006 | EOG Resources, Inc. | Holden Unit #121730447 | 9,000 |
| 630213Amendment | Dec 8, 2006 | Dec 8, 2006 | EOG Resources, Inc. | Holden Unit #1H21730447 | 10,000 |
| 630213Amendment | Dec 8, 2006 | Dec 8, 2006 | EOG Resources, Inc. | Holden Unit #1HH21730447 | 10,000 |
| 630213Amendment | Dec 8, 2006 | Dec 8, 2006 | EOG Resources, Inc. | Holden Unit #1HH21730447 | 10,000 |
| 629791 | Dec 8, 2006 | Dec 8, 2006 | Tuleta Energy Partners, LLC | Ellison #121730446 | 1,500 |
| 628543 | Nov 17, 2006 | Nov 17, 2006 | Dte Gas Resources, Inc. | Rogers, Betty B #1HH21730444 | 8,700 |
| 628542 | Nov 17, 2006 | Nov 17, 2006 | Dte Gas Resources, Inc. | Rogers, Betty A #2HH21730443 | 8,700 |
| 629096 | Nov 16, 2006 | Nov 16, 2006 | Devon Energy Production Co, L.P. | Harris Family #1H21730445 | 9,000 |
| 627871 | Oct 20, 2006 | Oct 20, 2006 | J-W Operating Co. | Craig-Davis #1HH21730442 | 15,000 |
| 627744 | Oct 18, 2006 | Oct 18, 2006 | EOG Resources, Inc. | Tam #121730441 | 9,500 |
| 627141 | Oct 6, 2006 | Oct 6, 2006 | Quicksilver Resources Inc. | Binkley #1HH21730440 | 6,400 |
| 627141Amendment | Oct 6, 2006 | Oct 6, 2006 | Quicksilver Resources Inc. | Binkley #1HH21730440 | 9,000 |
| 627082 | Oct 5, 2006 | Oct 5, 2006 | Dte Gas Resources, Inc. | P. Hooks #8V21730439 | 9,000 |
| 626754 | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Gordon Unit #2HH21730437 | 9,500 |
| 626754Amendment | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Gordon Unit #2HH21730437 | 9,500 |
| 626753 | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Gordon Unit #121730438 | 9,500 |
| 626753Amendment | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Gordon Unit #121730438 | 9,500 |
| 626430 | Sep 22, 2006 | Sep 22, 2006 | Dte Gas Resources, Inc. | Melton #2 HH21730436 | 8,700 |
| 626429 | Sep 22, 2006 | Sep 22, 2006 | Dte Gas Resources, Inc. | Melton #1 HH21730435 | 8,700 |
| 626428 | Sep 22, 2006 | Sep 22, 2006 | Dte Gas Resources, Inc. | P. Hooks #9 HH21730434 | 8,700 |
| 626427 | Sep 22, 2006 | Sep 22, 2006 | Dte Gas Resources, Inc. | P. Hooks 690 #10 HH21730433 | 8,700 |
| 626347 | Sep 22, 2006 | Sep 22, 2006 | Dte Gas Resources, Inc. | Hooks, P. 690 #11 HH21730432 | 8,700 |
| 626346 | Sep 21, 2006 | Sep 21, 2006 | Dte Gas Resources, Inc. | Hooks, P. 690 #7 V21730431 | 8,700 |
| 626275 | Sep 21, 2006 | Sep 21, 2006 | Whitehead Prod. Co., Inc. | Harper SWD #121730331 | 9,000 |
| 626275Amendment | Sep 21, 2006 | Sep 21, 2006 | Whitehead Prod. Co., Inc. | Harper SWD #121730331 | 10,500 |
| 625685 | Sep 19, 2006 | Sep 19, 2006 | Quicksilver Resources Inc. | Dallas, Steve #1HH21730430 | 6,400 |
| 625685Amendment | Sep 19, 2006 | Sep 19, 2006 | Quicksilver Resources Inc. | Dallas, Steve #1HRH21730430 | 6,400 |
| 625685Amendment | Sep 19, 2006 | Sep 19, 2006 | Quicksilver Resources Inc. | Opus #2HH21730430 | 6,400 |
| 625685Amendment | Sep 19, 2006 | Sep 19, 2006 | Quicksilver Resources Inc. | Opus #2HH21730430 | 9,000 |
| 625815 | Sep 13, 2006 | Sep 13, 2006 | Quicksilver Resources Inc. | Sideshow Bob #1HH21730429 | 6,400 |
| 625815Amendment | Sep 13, 2006 | Sep 13, 2006 | Quicksilver Resources Inc. | Sideshow Bob #1HH21730429 | 9,000 |
| 625196 | Aug 30, 2006 | Aug 30, 2006 | EOG Resources, Inc. | Kimbrell Unit #2HH21730428 | 8,700 |
| 625196Amendment | Aug 30, 2006 | Aug 30, 2006 | EOG Resources, Inc. | Kimbrell Unit #2HH21730428 | 9,500 |
| 625195 | Aug 30, 2006 | Aug 30, 2006 | EOG Resources, Inc. | Kimbrell Unit #121730427 | 8,700 |
| 625195Amendment | Aug 30, 2006 | Aug 30, 2006 | EOG Resources, Inc. | Kimbrell Unit #121730427 | 9,500 |
| 625183 | Aug 30, 2006 | Aug 30, 2006 | Dte Gas Resources, Inc. | Hooks, P. #6HH21730426 | 8,700 |
| 624886 | Aug 24, 2006 | Aug 24, 2006 | Westside Energy Op. Co., LP | Ellison Estate #1HH21730425 | 8,500 |
| 623957 | Aug 8, 2006 | Aug 8, 2006 | Quicksilver Resources Inc. | Uma Unit #1HH21730424 | 6,400 |
| 623957Amendment | Aug 8, 2006 | Aug 8, 2006 | Quicksilver Resources Inc. | Uma Unit #1HH21730424 | 6,400 |
| 623957Amendment | Aug 8, 2006 | Aug 8, 2006 | Quicksilver Resources Inc. | Uma Unit #1HH21730424 | 7,705 |
| 623774 | Aug 3, 2006 | Aug 3, 2006 | Quicksilver Resources Inc. | Bill the Cat #1HH21730423 | 6,400 |
| 623774Amendment | Aug 3, 2006 | Aug 3, 2006 | Quicksilver Resources Inc. | Bill the Cat #1HH21730423 | 7,726 |
| 622215 | Jul 25, 2006 | Jul 25, 2006 | Woodall Geophysical Exploration | Ellison, Curtis #121730417 | 1,200 |
| 622733 | Jul 20, 2006 | Jul 20, 2006 | EOG Resources, Inc. | Radke Unit #121730421 | 9,500 |
| 622733Amendment | Jul 20, 2006 | Jul 20, 2006 | EOG Resources, Inc. | Radke Unit #1HH21730421 | 9,500 |
| 622733Amendment | Jul 20, 2006 | Jul 20, 2006 | EOG Resources, Inc. | Radke Unit #1HH21730421 | 9,500 |
| 622867 | Jul 19, 2006 | Jul 19, 2006 | J-W Operating Co. | White, J.C. #2HH21730422 | 15,000 |
| 622724 | Jul 18, 2006 | Jul 18, 2006 | Dte Gas Resources, Inc. | Grace #1HH21730420 | 7,500 |
| 622164 | Jul 13, 2006 | Jul 13, 2006 | Dte Gas Resources, Inc. | Hooks, P. #5HH21730416 | 8,700 |
| 622337 | Jul 11, 2006 | Jul 11, 2006 | Carrizo Oil & Gas, Inc. | Haller Unit #1HH21730419 | 7,500 |
| 621824 | Jun 29, 2006 | Jun 29, 2006 | Westside Energy Op. Co., LP | Primula #1HH21730415 | 8,500 |
| 621082 | Jun 15, 2006 | Jun 15, 2006 | Dte Gas Resources, Inc. | P. Hooks #4HH21730414 | 8,700 |
| 620511 | Jun 6, 2006 | Jun 6, 2006 | Carrizo Oil & Gas, Inc. | HM McPherson Unit #1HH21730413 | 7,500 |
| 620511Amendment | Jun 6, 2006 | Jun 6, 2006 | Carrizo Oil & Gas, Inc. | HM McPherson Unit #1HH21730413 | 7,800 |
| 620313 | Jun 2, 2006 | Jun 2, 2006 | Dte Gas Resources, Inc. | P. Hooks #3 HH21730412 | 8,700 |
| 620103 | May 30, 2006 | May 30, 2006 | Chief Oil & Gas LLC | Igr Unit #1HH21730411 | 8,900 |
| 619341 | May 16, 2006 | May 16, 2006 | Aspect Energy, LLC | Gerik Trust #121730410 | 8,000 |
| 619341Amendment | May 16, 2006 | May 16, 2006 | Aspect Energy, LLC | Gerik Trust #121730410 | 10,000 |
| 619000 | May 16, 2006 | May 16, 2006 | Encana Oil & Gas(usa) Inc. | Dao Unit #1HH21730409 | 9,000 |
| 618736 | May 4, 2006 | May 4, 2006 | Chesapeake Operating, Inc. | Bessie #2HH21730408 | 9,000 |
| 618736Amendment | May 4, 2006 | May 4, 2006 | Chesapeake Operating, Inc. | Bessie #2HH21730408 | 9,000 |
| 617941 | Apr 27, 2006 | Apr 27, 2006 | Encana Oil & Gas(usa) Inc. | Bullard #502HH21730404 | 9,000 |
| 617938 | Apr 27, 2006 | Apr 27, 2006 | Encana Oil & Gas(usa) Inc. | Bullard #501HH21730405 | 9,000 |
| 618125 | Apr 25, 2006 | Apr 25, 2006 | Dte Gas Resources, Inc. | Hooks, P. #2 HH21730407 | 8,500 |
| 618022 | Apr 24, 2006 | Apr 24, 2006 | J-W Operating Co. | Nolan River #1HH21730406 | 13,000 |
| 617833 | Apr 19, 2006 | Apr 19, 2006 | Quicksilver Resources Inc. | Opus #1HH21730403 | 6,600 |
| 617833Amendment | Apr 19, 2006 | Apr 19, 2006 | Quicksilver Resources Inc. | Opus #1HH21730403 | 6,938 |
| 616909 | Apr 4, 2006 | Apr 4, 2006 | Chief Oil & Gas LLC | Gonzales Unit #1HH21730402 | 8,900 |
| 616896 | Apr 3, 2006 | Apr 3, 2006 | Quicksilver Resources Inc. | Cletus Unit #1HH21730401 | 6,600 |
| 616896Amendment | Apr 3, 2006 | Apr 3, 2006 | Quicksilver Resources Inc. | Cletus Reformed Unit #1HH21730401 | 9,000 |
| 616312 | Mar 29, 2006 | Mar 29, 2006 | Encana Oil & Gas(usa) Inc. | Brunson a Unit #1HH21730400 | 9,000 |
| 615639 | Mar 20, 2006 | Mar 20, 2006 | Encana Oil & Gas(usa) Inc. | Hancock "a" Unit #1HH21730399 | 9,000 |
| 615654 | Mar 10, 2006 | Mar 10, 2006 | Quicksilver Resources Inc. | Ronald Ann #1HH21730398 | 6,600 |
| 614993 | Feb 28, 2006 | Feb 28, 2006 | J-W Operating Co. | White, J. C. #1HH21730397 | 13,000 |
| 614993Amendment | Feb 28, 2006 | Feb 28, 2006 | J-W Operating Co. | White, J. C. #1HH21730397 | 13,000 |
| 614905 | Feb 27, 2006 | Feb 27, 2006 | Chief Oil & Gas LLC ** | Gatlin South Unit #1HH21730396 | 8,900 |
| 614597 | Feb 27, 2006 | Feb 27, 2006 | Encana Oil & Gas(usa) Inc. | Baker "a" Unit #101HH21730395 | 9,000 |
| 614597Amendment | Feb 27, 2006 | Feb 27, 2006 | Encana Oil & Gas(usa) Inc. | Baker "a" Unit #101HH21730395 | 9,000 |
| 614240 | Feb 15, 2006 | Feb 15, 2006 | Chief Oil & Gas LLC | Ellison Unit #1HH21730394 | 8,900 |
| 613329 | Jan 31, 2006 | Jan 31, 2006 | Chief Oil & Gas LLC | Mastin South Unit #1HH21730393 | 8,900 |
| 613328 | Jan 31, 2006 | Jan 31, 2006 | Chief Oil & Gas LLC | Island Grove Ranch Unit #1HH21730392 | 8,900 |
| 613083 | Jan 31, 2006 | Jan 31, 2006 | Encana Oil & Gas(usa) Inc. | Wiley, Dick B. & Lela Mae #1HH21730391 | 9,000 |
| 613083Amendment | Jan 31, 2006 | Jan 31, 2006 | Encana Oil & Gas(usa) Inc. | Wiley, Dick B. & Lela Mae #1HH21730391 | 9,000 |
| 612074 | Jan 9, 2006 | Jan 9, 2006 | Chief Oil & Gas LLC ** | Boyd Unit #1HH21730390 | 8,900 |
| 611174 | Dec 16, 2005 | Dec 16, 2005 | Reichmann Petroleum Corp. | Pipes #3HH21730387 | 11,000 |
| 611173 | Dec 16, 2005 | Dec 16, 2005 | Reichmann Petroleum Corp. | Pipes #2HH21730388 | 11,000 |
| 611171 | Dec 16, 2005 | Dec 16, 2005 | Reichmann Petroleum Corp. | Pipes #1HH21730389 | 11,000 |
| 611082 | Dec 15, 2005 | Dec 15, 2005 | Chief Oil & Gas LLC | Johnson Central Unit #1HH21730386 | 8,900 |
| 610962 | Dec 13, 2005 | Dec 13, 2005 | J-W Operating Co. | Segars #3HH21730385 | 13,000 |