| Royal #111R42-001-32704 | Carrizo Oil & Gas, Inc. | Anderson, TXCamp Hill | Not on schedule | 600 | Aug 3, 2011 | — | — |
| Vester Unit #12HHZ42-283-32671 | Carrizo Oil & Gas, Inc. | La Salle, TXEagleville (Eagle Ford-1) | Not on schedule | 11,000 | Jun 22, 2011 | — | — |
| Ivey Ranch #11HHZ42-127-34102 | Carrizo Oil & Gas, Inc. | Dimmit, TXEagleville (Eagle Ford-1) | Not on schedule | 11,000 | May 17, 2011 | — | — |
| Ivey Ranch #12HHZ42-127-34103 | Carrizo Oil & Gas, Inc. | Dimmit, TXEagleville (Eagle Ford-1) | Not on schedule | 11,000 | May 17, 2011 | — | — |
| Lonestar Unit #7HHZ42-439-35869 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 14, 2011 | — | — |
| Lonestar Unit #8HHZ42-439-35870 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 14, 2011 | — | — |
| Lonestar Unit #10HHZ42-439-35871 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 14, 2011 | — | — |
| Lonestar Unit #12HHZ42-439-35872 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 14, 2011 | — | — |
| Lonestar Unit #13HHZ42-439-35873 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 14, 2011 | — | — |
| Justin Unit #2HHZ42-121-34136 | Carrizo Oil & Gas, Inc. | Denton, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 11, 2011 | — | — |
| Justin Unit #3HHZ42-121-34137 | Carrizo Oil & Gas, Inc. | Denton, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 11, 2011 | — | — |
| Justin Unit #4HHZ42-121-34138 | Carrizo Oil & Gas, Inc. | Denton, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 11, 2011 | — | — |
| Justin Unit #5HHZ42-121-34139 | Carrizo Oil & Gas, Inc. | Denton, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 11, 2011 | — | — |
| Justin Unit #6HHZ42-121-34140 | Carrizo Oil & Gas, Inc. | Denton, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Apr 11, 2011 | — | — |
| Fannin Farms B Unit #11HHZ42-439-35779 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Mar 8, 2011 | — | — |
| Fannin Farms B Unit #10HHZ42-439-35777 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Mar 4, 2011 | — | — |
| Fannin Farms B Unit #8HHZ42-439-35770 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Mar 2, 2011 | — | — |
| Fannin Farms B Unit #9HHZ42-439-35772 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Mar 2, 2011 | — | — |
| Ervin Unit #8HHZ42-439-35676 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jan 13, 2011 | — | — |
| Swapo II B Unit #5HHZ42-439-35652 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 30, 2010 | — | — |
| Swapo II B Unit #6HHZ42-439-35653 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 30, 2010 | — | — |
| Swapo II B Unit #7HHZ42-439-35654 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 30, 2010 | — | — |
| Swapo II B Unit #8HHZ42-439-35655 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 30, 2010 | — | — |
| Swapo II B Unit #9HHZ42-439-35656 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 30, 2010 | — | — |
| Swapo II B Unit #2HHZ42-439-35649 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 29, 2010 | — | — |
| Swapo II B Unit #3HHZ42-439-35650 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 29, 2010 | — | — |
| Swapo II B Unit #4HHZ42-439-35651 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 29, 2010 | — | — |
| Lonestar Unit #6HHZ42-439-35643 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Dec 17, 2010 | — | — |
| Delaney "a" #10TO42-001-32695 | Carrizo Oil & Gas, Inc. | Anderson, TXCamp Hill | Not on schedule | 600 | Nov 23, 2010 | — | — |
| Delaney "a" #11TO42-001-32696 | Carrizo Oil & Gas, Inc. | Anderson, TXCamp Hill | Not on schedule | 600 | Nov 23, 2010 | — | — |
| YU Unit #1HHZ42-439-35434 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Sep 14, 2010 | — | — |
| Lonestar Unit #11HHZ42-439-35341 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Aug 18, 2010 | — | — |
| Bear Clause Ranch #11HHZ42-283-32325 | Carrizo Oil & Gas, Inc. | La Salle, TXHawkville (Eagleford Shale) | Not on schedule | 10,500 | Aug 12, 2010 | — | — |
| Taylor Unit #6HHZ42-439-35291 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jul 26, 2010 | — | — |
| Taylor Unit #7HHZ42-439-35292 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jul 26, 2010 | — | — |
| Taylor Unit #8HHZ42-439-35293 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jul 26, 2010 | — | — |
| Taylor Unit #9HHZ42-439-35294 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jul 26, 2010 | — | — |
| Mumme Ranch #11HHZ42-283-32309 | Carrizo Oil & Gas, Inc. | La Salle, TXEagleville (Eagle Ford-1) | Not on schedule | 10,500 | Jul 13, 2010 | — | — |
| Rice Loh Unit #8HHZ42-439-35197 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jun 2, 2010 | — | — |
| Rice Loh Unit #10HHZ42-439-35198 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jun 2, 2010 | — | — |
| Rice Loh Unit #1HHZ42-439-35191 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Jun 1, 2010 | — | — |
| Jasik Ranch #1HHZ42-283-32283 | Carrizo Oil & Gas, Inc. | La Salle, TXHawkville (Eagleford Shale) | Not on schedule | 10,500 | May 25, 2010 | — | — |
| Buffalo Unit #1HHZ42-439-34874 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Mar 1, 2010 | — | — |
| Buffalo Unit #4HHZ42-439-34878 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Mar 1, 2010 | — | — |
| Teegarden Unit "B" #5HHZ42-439-34839 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Feb 18, 2010 | — | — |
| Schroeder Unit #8HHZ42-439-34832 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Feb 12, 2010 | — | — |
| Campuzano Unit #11HHZ42-439-34830 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Feb 11, 2010 | — | — |
| Lester Levy Unit #8HHZ42-439-34548 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Sep 2, 2009 | — | — |
| Lester Levy Unit #7HHZ42-439-34550 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Sep 2, 2009 | — | — |
| Uta "C" Unit #17HHZ42-439-34496 | Carrizo Oil & Gas, Inc. | Tarrant, TXNewark, East (Barnett Shale) | Not on schedule | 9,000 | Aug 4, 2009 | — | — |