| 513277 | Aug 31, 2001 | Aug 31, 2001 | Synergy Oil & Gas, Inc. (A) | Jackson | Spacek, Frank #8 | 6,440 | 23930409 |
| 511137 | Jul 6, 2001 | Jul 6, 2001 | Synergy Oil & Gas, Inc. (A) | Waller | Hardy, Rufus "B" #29 | 10,800 | 47330665 |
| 508481 | Apr 20, 2001 | Apr 20, 2001 | Synergy Oil & Gas, Inc. (A) | Live Oak | Lyne, T. J. #27ST | 9,050 | 29734200 |
| 507477 | Apr 12, 2001 | Apr 12, 2001 | Synergy Oil & Gas, Inc. (A) | Liberty | Arco Fee #2 | 13,100 | 29132177 |
| 506395 | Mar 16, 2001 | Mar 16, 2001 | Synergy Oil & Gas, Inc. (A) | San Patricio | State Tract 25 #3 | 12,300 | 40931855 |
| 506015 | Mar 2, 2001 | Mar 2, 2001 | Synergy Oil & Gas, Inc. (A) | Reeves | Longshot #3 | 5,500 | 38932205 |
| 505959 | Mar 1, 2001 | Mar 1, 2001 | Synergy Oil & Gas, Inc. (A) | Reeves | Jean #1 | 5,500 | 38932204 |
| 504778 | Jan 31, 2001 | Jan 31, 2001 | Synergy Oil & Gas, Inc. (A) | Austin | Bellville School Land #23 | 6,060 | 01530765 |
| 504778Amendment | Jan 31, 2001 | Jan 31, 2001 | Synergy Oil & Gas, Inc. (A) | Austin | Bellville School Land #23 | 6,060 | 01530765 |
| 504778Amendment | Jan 31, 2001 | Jan 31, 2001 | Synergy Oil & Gas, Inc. (A) | Austin | Bellville School Land #23 | 6,060 | 01530765 |
| 503788 | Jan 8, 2001 | Jan 8, 2001 | Synergy Oil & Gas, Inc. (A) | Live Oak | Lyne, T. J. #19 | 10,660 | 29734118 |
| 503380 | Dec 22, 2000 | Dec 22, 2000 | Synergy Oil & Gas, Inc. (A) | Jackson | Wiese, Della #10 | 6,416 | 23932294 |
| 503166 | Dec 18, 2000 | Dec 18, 2000 | Synergy Oil & Gas, Inc. (A) | Live Oak | Christensen Gas Unit #1 | 15,500 | 29734207 |
| 503166Amendment | Dec 18, 2000 | Dec 18, 2000 | Synergy Oil & Gas, Inc. (A) | Live Oak | Christensen Gas Unit #1 | 15,500 | 29734207 |
| 502539 | Dec 1, 2000 | Dec 1, 2000 | Synergy Oil & Gas, Inc. (A) | Reeves | Lowe #1 | 5,500 | 38932195 |
| 502538 | Dec 1, 2000 | Dec 1, 2000 | Synergy Oil & Gas, Inc. (A) | Reeves | Lasell #1 | 5,500 | 38932196 |
| 501837 | Nov 10, 2000 | Nov 10, 2000 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard Sog #3 | 6,500 | 35533279 |
| 501300 | Oct 26, 2000 | Oct 26, 2000 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard Sog #4 | 5,750 | 35533276 |
| 501201 | Oct 25, 2000 | Oct 25, 2000 | Synergy Oil & Gas, Inc. (A) | Lavaca | Appling Farms #1 | 8,600 | 28532829 |
| 501124 | Oct 23, 2000 | Oct 23, 2000 | Synergy Oil & Gas, Inc. (A) | Live Oak | Lyne, T.J. #27ST | 9,050 | 29734200 |
| 497343 | Jul 18, 2000 | Jul 18, 2000 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard Sog #1 | 6,500 | 35533239 |
| 496699 | Jul 6, 2000 | Jul 6, 2000 | Synergy Oil & Gas, Inc. (A) | Live Oak | Christensen Gas Unit #1 | 15,500 | 29734207 |
| 495883 | Jun 6, 2000 | Jun 6, 2000 | Synergy Oil & Gas, Inc. (A) | Live Oak | Lyne, T. J. #19 | 10,660 | 29734118 |
| 495690Amendment | Jun 1, 2000 | Jun 1, 2000 | Synergy Oil & Gas, Inc. (A) | Matagorda | Synergy-Petersen #1 | 17,000 | 32131825 |
| 495489 | May 25, 2000 | May 25, 2000 | Synergy Oil & Gas, Inc. (A) | Jackson | Mauritz, T. N. #9 | 6,416 | 23932293 |
| 495488 | May 25, 2000 | May 25, 2000 | Synergy Oil & Gas, Inc. (A) | Jackson | Mauritz, T. N. #8 | 6,457 | 23932268 |
| 494220 | Apr 26, 2000 | Apr 26, 2000 | Synergy Oil & Gas, Inc. (A) | Jefferson | Spencer, Junker Etal "a" Tract C #66 | 11,000 | 24532250 |
| 494227 | Apr 18, 2000 | Apr 18, 2000 | Synergy Oil & Gas, Inc. (A) | Jackson | Wiese,della #8 | 4,845 | 23930178 |
| 492516 | Mar 8, 2000 | Mar 8, 2000 | Synergy Oil & Gas, Inc. (A) | Jackson | Mauritz, T. N. #8 | 6,457 | 23932268 |
| 490663 | Feb 16, 2000 | Feb 16, 2000 | Synergy Oil & Gas, Inc. (A) | Live Oak | Lyne, T. J. #18 | 11,100 | 29734083 |
| 491345 | Feb 9, 2000 | Feb 9, 2000 | Synergy Oil & Gas, Inc. (A) | Austin | Sherrill #1 | 6,300 | 01530751 |
| 491503 | Jan 27, 2000 | Jan 27, 2000 | Synergy Oil & Gas, Inc. (A) | Jackson | Niebuhr, A. L. #11 | 6,420 | 23932497 |
| 491344 | Jan 26, 2000 | Jan 26, 2000 | Synergy Oil & Gas, Inc. (A) | Nueces | McCampbell, W. B. #9 | 4,400 | 35533210 |
| 490508 | Dec 20, 1999 | Dec 20, 1999 | Synergy Oil & Gas, Inc. (A) | Jackson | Mauritz, T. N. #9 | 6,416 | 23932293 |
| 489765 | Dec 6, 1999 | Dec 6, 1999 | Synergy Oil & Gas, Inc. (A) | San Patricio | Dimmick, A. J. #12B | 6,700 | 40932365 |
| 489944 | Dec 3, 1999 | Dec 3, 1999 | Synergy Oil & Gas, Inc. (A) | Calhoun | Knipling Gas Unit #1 | 9,296 | 05730883 |
| 488848 | Nov 3, 1999 | Nov 3, 1999 | Synergy Oil & Gas, Inc. (A) | Calhoun | Welder, P. H. "C" #7 | 5,495 | 05700092 |
| 488803 | Oct 25, 1999 | Oct 25, 1999 | Synergy Oil & Gas, Inc. (A) | Jackson | Cravens, E. T. #8 | 6,400 | 23932051 |
| 488803Amendment | Oct 25, 1999 | Oct 25, 1999 | Synergy Oil & Gas, Inc. (A) | Jackson | Cravens, E. T. #8 | 6,400 | 23932051 |
| 488389 | Oct 22, 1999 | Oct 22, 1999 | Synergy Oil & Gas, Inc. (A) | Runnels | Presley #1 | 4,550 | 39934227 |
| 487814 | Sep 22, 1999 | Sep 22, 1999 | Synergy Oil & Gas, Inc. (A) | Jackson | Cravens, J. R. #6 | 6,112 | 23932357 |
| 487144 | Aug 31, 1999 | Aug 31, 1999 | Synergy Oil & Gas, Inc. (A) | Jackson | Spacke, Frank #6 | 6,051 | 23900549 |
| 486790 | Aug 26, 1999 | Aug 26, 1999 | Synergy Oil & Gas, Inc. (A) | Austin | Bellville School Land #22 | 6,300 | 01530740 |
| 486895 | Aug 23, 1999 | Aug 23, 1999 | Synergy Oil & Gas, Inc. (A) | Pecos | El Paso #2 | 5,000 | 37136935 |
| 486554 | Aug 10, 1999 | Aug 10, 1999 | Synergy Oil & Gas, Inc. (A) | Loving | Meyers #1HH | 5,100 | 30131090 |
| 484184 | May 5, 1999 | May 5, 1999 | Synergy Oil & Gas, Inc. (A) | San Patricio | Dimmick, A. J. #12B | 6,700 | 40932365 |
| 483703 | Apr 9, 1999 | Apr 9, 1999 | Synergy Oil & Gas, Inc. (A) | Nueces | Blacknall, J. C. #8 | 7,015 | 35501268 |
| 482568 | Feb 9, 1999 | Feb 9, 1999 | Synergy Oil & Gas, Inc. (A) | Pecos | Mona Lehn State #2 | 5,000 | 37136895 |
| 482044 | Jan 14, 1999 | Jan 14, 1999 | Synergy Oil & Gas, Inc. (A) | Austin | Diemar #19 | 10,500 | 01530726 |
| 481255 | Dec 28, 1998 | Dec 28, 1998 | Synergy Oil & Gas, Inc. (A) | Liberty | Arco Fee #3 | 13,040 | 29132180 |
| 480754Amendment | Nov 10, 1998 | Nov 10, 1998 | Synergy Oil & Gas, Inc. (A) | Live Oak | Lyne, T. J. #27 | 9,000 | 29734200 |
| 480044 | Nov 5, 1998 | Nov 5, 1998 | Synergy Oil & Gas, Inc. (A) | Hidalgo | Jackson, Chandler #2 | 9,000 | 21500698 |
| 478705 | Sep 14, 1998 | Sep 14, 1998 | Synergy Oil & Gas, Inc. (A) | Polk | Kingsbury Co.holding Corporation #5 | 4,557 | 37330440 |
| 479078 | Sep 2, 1998 | Sep 2, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Link, Sarah A. Etal #10 | 3,900 | 30131105 |
| 479077 | Sep 2, 1998 | Sep 2, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Mingus, V. P. #5 | 3,880 | 30131108 |
| 479076 | Sep 2, 1998 | Sep 2, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Link, Sarah A. et Al #8 | 3,900 | 30131106 |
| 479075 | Sep 2, 1998 | Sep 2, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Link, Sarah A. Etal #9 | 3,900 | 30131107 |
| 477478 | Jul 10, 1998 | Jul 10, 1998 | Synergy Oil & Gas, Inc. (A) | Nueces | Walker, Ida #21 | 6,500 | 35532776 |
| 476380 | May 20, 1998 | May 20, 1998 | Synergy Oil & Gas, Inc. (A) | Nueces | Blacknall, J. C. #7 | 6,267 | 35501267 |
| 476165 | May 13, 1998 | May 13, 1998 | Synergy Oil & Gas, Inc. (A) | Hidalgo | Robinette, J. C. #3 | 7,000 | 21531643 |
| 475761 | May 5, 1998 | May 5, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Mingus, V. P. #2R | 3,880 | 30131103 |
| 475463 | Apr 23, 1998 | Apr 23, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Link, Sarah A., Etal #7 | 3,900 | 30131101 |
| 475462 | Apr 23, 1998 | Apr 23, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | Mingus, V. P. #6 | 3,880 | 30131100 |
| 475460 | Apr 23, 1998 | Apr 23, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | TXL -AV- /NCT-A/ #7 | 3,850 | 30131099 |
| 475459 | Apr 23, 1998 | Apr 23, 1998 | Synergy Oil & Gas, Inc. (A) | Loving | TXL -AV- /NCT-A/ #8 | 3,850 | 30131102 |
| 474581 | Apr 6, 1998 | Apr 6, 1998 | Synergy Oil & Gas, Inc. (A) | Calhoun | Knipling Gas Unit #3 | 9,036 | 05730262 |
| 471236 | Jan 12, 1998 | Jan 12, 1998 | Synergy Oil & Gas, Inc. (A) | Nueces | Blacknall, J. C. #8 | 7,015 | 35501268 |
| 467576 | Sep 15, 1997 | Sep 15, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "B" #26 | 6,335 | 35500139 |
| 467574 | Sep 15, 1997 | Sep 15, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "AA" #2114 | 5,710 | 35530577 |
| 467572 | Sep 15, 1997 | Sep 15, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard #538 | 5,712 | 35530646 |
| 467531 | Sep 12, 1997 | Sep 12, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "A" #113 | 5,396 | 35500133 |
| 467530 | Sep 12, 1997 | Sep 12, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "B" #222 | 5,565 | 35500155 |
| 467529 | Sep 12, 1997 | Sep 12, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "C" #39 | 5,402 | 35500107 |
| 467528 | Sep 12, 1997 | Sep 12, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "C" #321 | 6,363 | 35500119 |
| 467527 | Sep 12, 1997 | Sep 12, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard "C" #329 | 6,300 | 35531864 |
| 463563 | Jul 18, 1997 | Jul 18, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | Johns, C D #4 | 4,449 | 35532424 |
| 462509 | May 22, 1997 | May 22, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | Blacknall, J. C. #8 | 7,015 | 35501268 |
| 459516 | Apr 3, 1997 | Apr 3, 1997 | Synergy Oil & Gas, Inc. (A) | Jefferson | Junker-Spencer et al -a- Tract B #39 | 8,500 | 24502495 |
| 459515 | Mar 12, 1997 | Mar 12, 1997 | Synergy Oil & Gas, Inc. (A) | Jefferson | Junker-Spencer et al Fee #30 | 8,500 | 24502486 |
| 459283 | Mar 11, 1997 | Mar 11, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | King, Richard #29 | 5,414 | 35500092 |
| 458190 | Feb 12, 1997 | Feb 12, 1997 | Synergy Oil & Gas, Inc. (A) | Calhoun | Welder, P.H. "C" #7 | 5,495 | 05700092 |
| 456367 | Jan 8, 1997 | Jan 8, 1997 | Synergy Oil & Gas, Inc. (A) | Nueces | Walker, Ida #21 | 6,500 | 35532776 |
| 454266 | Nov 13, 1996 | Nov 13, 1996 | Synergy Oil & Gas, Inc. (A) | Jefferson | Craigen, Leo "A" #12 | 7,500 | 24531904 |
| 445880 | Apr 17, 1996 | Apr 17, 1996 | Synergy Oil & Gas, Inc. (A) | Nueces | Walker, Ida #21 | 7,000 | 35532776 |