| 612337 | Jan 12, 2006 | Jan 12, 2006 | Houston Exploration Company, The | Hidalgo | C. M. Guerra #1 | 16,500 | 21533428 |
| 612019 | Jan 6, 2006 | Jan 6, 2006 | Houston Exploration Company, The | Zapata | Martinez-Ramirez Gas Unit #2 | 10,000 | 50535466 |
| 611969 | Jan 6, 2006 | Jan 6, 2006 | Houston Exploration Company, The | Rusk | Taliaferro Gas Unit 1 #7 | 11,200 | 40133790 |
| 611760 | Dec 30, 2005 | Dec 30, 2005 | Houston Exploration Company, The | Zapata | A. Garza #20 | 10,800 | 50535458 |
| 611759 | Dec 30, 2005 | Dec 30, 2005 | Houston Exploration Company, The | Zapata | A. Garza #19 | 10,800 | 50535457 |
| 611748 | Dec 30, 2005 | Dec 30, 2005 | Houston Exploration Company, The | Zapata | El Refugio "AD" #4 | 13,500 | 50535456 |
| 611168 | Dec 16, 2005 | Dec 16, 2005 | Houston Exploration Company, The | Zapata | M. Flores #13 | 13,800 | 50535447 |
| 610842 | Dec 14, 2005 | Dec 14, 2005 | Houston Exploration Company, The | Zapata | Dominguez #5 | 9,700 | 50535443 |
| 610838 | Dec 13, 2005 | Dec 13, 2005 | Houston Exploration Company, The | Rusk | Dollar, Fred #1 | 11,200 | 40133760 |
| 610840 | Dec 12, 2005 | Dec 12, 2005 | Houston Exploration Company, The | Rusk | Dickeson #2 | 11,200 | 40133761 |
| 610840Amendment | Dec 12, 2005 | Dec 12, 2005 | Houston Exploration Company, The | Rusk | Dickeson #2 | 11,200 | 40133761 |
| 610493 | Dec 7, 2005 | Dec 7, 2005 | Houston Exploration Company, The | Zapata | Munoz-Gutierrez Gas Unit #3 | 14,800 | 50535437 |
| 610491 | Dec 7, 2005 | Dec 7, 2005 | Houston Exploration Company, The | Zapata | Munoz-Gutierrez Gas Unit #2 | 12,100 | 50535436 |
| 608672 | Nov 29, 2005 | Nov 29, 2005 | Houston Exploration Company, The | Zapata | Garza, L. "2" #9 | 9,746 | 50535408 |
| 610097 | Nov 28, 2005 | Nov 28, 2005 | Houston Exploration Company, The | Zapata | Rathmell Land and Cattle Co. #2 | 9,500 | 50535430 |
| 609689 | Nov 22, 2005 | Nov 22, 2005 | Houston Exploration Company, The | Zapata | Haynes #27 | 12,300 | 50535424 |
| 609403 | Nov 16, 2005 | Nov 16, 2005 | Houston Exploration Company, The | Rusk | Hinson Gas Unit No. 1 #3 | 11,200 | 40133739 |
| 609399 | Nov 15, 2005 | Nov 15, 2005 | Houston Exploration Company, The | Rusk | Hinson Gas Unit No. 1 #2 | 11,200 | 40133737 |
| 608184 | Nov 15, 2005 | Nov 15, 2005 | Houston Exploration Company, The | Zapata | Alfonso #38 | 10,320 | 50535401 |
| 608179 | Nov 15, 2005 | Nov 15, 2005 | Houston Exploration Company, The | Zapata | Alfonso #37 | 10,320 | 50535400 |
| 608941 | Nov 8, 2005 | Nov 8, 2005 | Houston Exploration Company, The | Zapata | Bustamante Gas Unit 1 #10 | 12,300 | 50535415 |
| 608856 | Nov 3, 2005 | Nov 3, 2005 | Houston Exploration Company, The | Zapata | Dominguez #4 | 9,700 | 50535412 |
| 608613 | Nov 2, 2005 | Nov 2, 2005 | Houston Exploration Company, The | Harrison | Dickard Gas Unit #2 | 10,300 | 20333320 |
| 608613Amendment | Nov 2, 2005 | Nov 2, 2005 | Houston Exploration Company, The | Harrison | Dickard Gas Unit #2 | 10,300 | 20333320 |
| 608674 | Oct 31, 2005 | Oct 31, 2005 | Houston Exploration Company, The | Rusk | Taliaferro Gas Unit 1 #6 | 11,200 | 40133728 |
| 607163 | Oct 25, 2005 | Oct 25, 2005 | Houston Exploration Company, The | Zapata | Maria Cuellar #17 | 10,300 | 50535380 |
| 607146 | Oct 25, 2005 | Oct 25, 2005 | Houston Exploration Company, The | Zapata | Asche #109 | 13,000 | 50535379 |
| 607891 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #9 | 11,200 | 40133708 |
| 607891Amendment | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #9 | 11,200 | 40133708 |
| 607890 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #8 | 11,200 | 40133707 |
| 607890Amendment | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #8 | 11,200 | 40133707 |
| 607889 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #7 | 11,200 | 40133706 |
| 607888 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #6 | 11,200 | 40133705 |
| 607888Amendment | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #6 | 11,200 | 40133705 |
| 607888Amendment | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #6 | 11,200 | 40133705 |
| 607869 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rusk | Rusk County Airport Gas Unit 1 #4 | 11,200 | 40133704 |
| 607852 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Zapata | Rathmell Land and Cattle Co. #1 | 9,500 | 50535391 |
| 607882 | Oct 14, 2005 | Oct 14, 2005 | Houston Exploration Company, The | Rusk | Fischer "A" #1 | 11,200 | 40133702 |
| 607882Amendment | Oct 14, 2005 | Oct 14, 2005 | Houston Exploration Company, The | Rusk | Fischer #3 | 11,200 | 40133702 |
| 607665 | Oct 11, 2005 | Oct 11, 2005 | Houston Exploration Company, The | Rusk | Redwine, J. H. #1 | 11,200 | 40133697 |
| 607427 | Oct 7, 2005 | Oct 7, 2005 | Houston Exploration Company, The | Zapata | A. Garza #18 | 10,800 | 50535384 |
| 607103 | Sep 29, 2005 | Sep 29, 2005 | Houston Exploration Company, The | Zapata | Trevino #22 | 10,500 | 50535377 |
| 607103Amendment | Sep 29, 2005 | Sep 29, 2005 | Houston Exploration Company, The | Zapata | Trevino #22 | 10,500 | 50535377 |
| 606891 | Sep 23, 2005 | Sep 23, 2005 | Houston Exploration Company, The | Zapata | Salinas, G. G. #1 | 9,500 | 50535372 |
| 606183 | Sep 12, 2005 | Sep 12, 2005 | Houston Exploration Company, The | Zapata | Dominguez #3 | 9,500 | 50535363 |
| 606183Amendment | Sep 12, 2005 | Sep 12, 2005 | Houston Exploration Company, The | Zapata | Dominguez #3 | 9,500 | 50535363 |
| 605617 | Aug 30, 2005 | Aug 30, 2005 | Houston Exploration Company, The | Webb | Hubberd Trust #74 | 9,800 | 47939255 |
| 604311 | Aug 29, 2005 | Aug 29, 2005 | Houston Exploration Company, The | Zapata | Leonardo #44 | 13,500 | 50535339 |
| 605505 | Aug 26, 2005 | Aug 26, 2005 | Houston Exploration Company, The | Rusk | Lake Gas Unit 1 #5 | 11,200 | 40133667 |
| 605451 | Aug 26, 2005 | Aug 26, 2005 | Houston Exploration Company, The | Zapata | M. Flores #12 | 14,500 | 50535355 |
| 605415 | Aug 25, 2005 | Aug 25, 2005 | Houston Exploration Company, The | Rusk | Dollar #1 | 11,200 | 40133665 |
| 604225 | Aug 25, 2005 | Aug 25, 2005 | Houston Exploration Company, The | Zapata | Leonardo #43 | 10,500 | 50535337 |
| 605346 | Aug 23, 2005 | Aug 23, 2005 | Houston Exploration Company, The | Zapata | Gutierrez, E. E. #6 | 14,500 | 50535354 |
| 482550Amendment | Aug 18, 2005 | Aug 18, 2005 | Houston Exploration Company, The | Zapata | Jacoba #4 | 14,500 | 50533901 |
| 335584Amendment | Aug 18, 2005 | Aug 18, 2005 | Houston Exploration Company, The | Zapata | Jacoba #3 | 14,000 | 50532365 |
| 330426Amendment | Aug 18, 2005 | Aug 18, 2005 | Houston Exploration Company, The | Zapata | Jacoba #2 | 14,000 | 50532328 |
| 604928 | Aug 15, 2005 | Aug 15, 2005 | Houston Exploration Company, The | Harrison | Cook Gas Unit #2 | 10,300 | 20333269 |
| 603582 | Aug 12, 2005 | Aug 12, 2005 | Houston Exploration Company, The | Zapata | Munoz #13 | 14,700 | 50535327 |
| 604259 | Aug 2, 2005 | Aug 2, 2005 | Houston Exploration Company, The | Rusk | Fischer #1 | 11,200 | 40133628 |
| 604259Amendment | Aug 2, 2005 | Aug 2, 2005 | Houston Exploration Company, The | Rusk | Fischer #1 | 11,200 | 40133628 |
| 602645 | Jul 28, 2005 | Jul 28, 2005 | Houston Exploration Company, The | Zapata | Flores, L. G. #48 | 14,500 | 50535311 |
| 603883 | Jul 25, 2005 | Jul 25, 2005 | Houston Exploration Company, The | Rusk | Taliaferro Gas Unit 1 #5 | 11,200 | 40133624 |
| 603852 | Jul 22, 2005 | Jul 22, 2005 | Houston Exploration Company, The | Zapata | Trevino #26 | 10,300 | 50535329 |
| 603625 | Jul 19, 2005 | Jul 19, 2005 | Houston Exploration Company, The | Rusk | Redwine #1 | 11,200 | 40133618 |
| 603394 | Jul 15, 2005 | Jul 15, 2005 | Houston Exploration Company, The | Zapata | Munoz #12 | 14,900 | 50535325 |
| 603388 | Jul 15, 2005 | Jul 15, 2005 | Houston Exploration Company, The | Zapata | Dominguez #2 | 9,800 | 50535324 |
| 603344 | Jul 15, 2005 | Jul 15, 2005 | Houston Exploration Company, The | Zapata | Benavides, B. R. #8 | 13,300 | 50535323 |
| 603344Amendment | Jul 15, 2005 | Jul 15, 2005 | Houston Exploration Company, The | Zapata | Benavides, B. R. #8 | 13,300 | 50535323 |
| 603343 | Jul 15, 2005 | Jul 15, 2005 | Houston Exploration Company, The | Rusk | Lake Gas Unit 1 #3 | 11,200 | 40133615 |
| 602155 | Jul 12, 2005 | Jul 12, 2005 | Houston Exploration Company, The | Zapata | Flores, L. G. #47 | 11,800 | 50535304 |
| 603233 | Jul 11, 2005 | Jul 11, 2005 | Houston Exploration Company, The | Zapata | Jacoba #8 | 14,500 | 50535320 |
| 603215 | Jul 11, 2005 | Jul 11, 2005 | Houston Exploration Company, The | Zapata | Asche #108 | 14,000 | 50535321 |
| 602149 | Jul 11, 2005 | Jul 11, 2005 | Houston Exploration Company, The | Zapata | Asche #107 | 10,800 | 50535303 |
| 601763 | Jul 8, 2005 | Jul 8, 2005 | Houston Exploration Company, The | Zapata | L. G. Flores #46 | 14,500 | 50535297 |
| 602993 | Jul 5, 2005 | Jul 5, 2005 | Houston Exploration Company, The | Zapata | Garza-Irene Gas Unit #2 | 14,400 | 50535315 |
| 602494 | Jul 1, 2005 | Jul 1, 2005 | Houston Exploration Company, The | Zapata | Jacoba #7 | 14,000 | 50535314 |
| 602467 | Jun 23, 2005 | Jun 23, 2005 | Houston Exploration Company, The | Zapata | Red Crest Trust #2 | 9,300 | 50535309 |
| 602000 | Jun 14, 2005 | Jun 14, 2005 | Houston Exploration Company, The | Rusk | Lake Gas Unit 1 #4 | 11,200 | 40133592 |
| 601767 | Jun 8, 2005 | Jun 8, 2005 | Houston Exploration Company, The | Zapata | Rodriguez Gas Unit #14R | 14,900 | 50535298 |
| 600625 | Jun 8, 2005 | Jun 8, 2005 | Houston Exploration Company, The | Zapata | Asche #106 | 13,600 | 50535281 |
| 600624 | Jun 8, 2005 | Jun 8, 2005 | Houston Exploration Company, The | Zapata | Asche #105 | 13,800 | 50535280 |
| 561184Amendment | Jun 8, 2005 | Jun 8, 2005 | Houston Exploration Company, The | Zapata | Dominguez #1 | 13,200 | 50535271 |
| 601501 | Jun 2, 2005 | Jun 2, 2005 | Houston Exploration Company, The | Harrison | Pepper Gas Unit 1 #2 | 10,300 | 20333193 |
| 601501Amendment | Jun 2, 2005 | Jun 2, 2005 | Houston Exploration Company, The | Harrison | Pepper Gas Unit 1 #2 | 10,300 | 20333193 |
| 561141 | Jun 2, 2005 | Jun 2, 2005 | Houston Exploration Company, The | Zapata | Alfonso #35 | 10,320 | 50535270 |
| 600170 | Jun 1, 2005 | Jun 1, 2005 | Houston Exploration Company, The | Zapata | Alfonso #36 | 10,320 | 50535275 |
| 601398 | May 31, 2005 | May 31, 2005 | Houston Exploration Company, The | Zapata | Red Crest Trust #1 | 12,400 | 50535293 |
| 601237Amendment | May 26, 2005 | May 26, 2005 | Houston Exploration Company, The | Zapata | Rodriguez Gas Unit #15 | 14,800 | 50535292 |
| 601182 | May 25, 2005 | May 25, 2005 | Houston Exploration Company, The | Zapata | J. M. Gutierrez #17 | 13,400 | 50535290 |
| 601059 | May 23, 2005 | May 23, 2005 | Houston Exploration Company, The | Rusk | Lake Gas Unit 1 #2 | 11,200 | 40133568 |
| 600978 | May 20, 2005 | May 20, 2005 | Houston Exploration Company, The | Webb | Hubberd #78 | 10,800 | 47939130 |
| 600922 | May 19, 2005 | May 19, 2005 | Houston Exploration Company, The | Webb | Hubberd #79 | 10,900 | 47939129 |
| 600917 | May 19, 2005 | May 19, 2005 | Houston Exploration Company, The | Webb | Hubberd #80 | 10,900 | 47939124 |
| 560205 | May 19, 2005 | May 19, 2005 | Houston Exploration Company, The | Zapata | Alfonso #34 | 10,320 | 50535259 |
| 600680 | May 16, 2005 | May 16, 2005 | Houston Exploration Company, The | Rusk | Taliaferro Gas Unit 1 #4 | 11,200 | 40133564 |
| 600679 | May 16, 2005 | May 16, 2005 | Houston Exploration Company, The | Rusk | Taliaferro Gas Unit 1 #3 | 11,200 | 40133563 |
| 560206 | May 16, 2005 | May 16, 2005 | Houston Exploration Company, The | Zapata | Asche #103 | 13,500 | 50535260 |
| 600314 | May 6, 2005 | May 6, 2005 | Houston Exploration Company, The | Zapata | Asche #104 | 13,900 | 50535279 |
| 600314Amendment | May 6, 2005 | May 6, 2005 | Houston Exploration Company, The | Zapata | Asche #104 | 13,900 | 50535279 |
| 600250 | May 5, 2005 | May 5, 2005 | Houston Exploration Company, The | Zapata | Ramirez, M. #2 | 10,300 | 50535276 |