| Big Girl 31 State #00530-015-40259 | COG Operating LLC | EddyRed Lake; Glorieta-Yeso, Northeast | CanceledOil | 4,825 | May 11, 2012 | 0 | 0 |
| Island 20 State #00130-015-40263 | COG Operating LLC | EddyRed Lake; Queen-Grayburg-SA | CanceledOil | 4,825 | May 11, 2012 | 0 | 0 |
| Island 20 State #00330-015-40264 | COG Operating LLC | EddyRed Lake; Queen-Grayburg-SA | CanceledOil | 4,825 | May 11, 2012 | 0 | 0 |
| Tres State #001H30-025-40560 | COG Operating LLC | LeaWildcat G-06 S133401H; Abo | CanceledOil | 13,884 | May 9, 2012 | 0 | 0 |
| Harrier 35 Federal Com #001HHZ30-025-40572 | COG Operating LLC | LeaWC-025 G-08 S253235G; LWR Bone Sprin | ActiveOil | 16,394 | May 9, 2012 | 6,222 | 17,878 |
| Trigg 6 Federal Com #001H30-015-40249 | COG Operating LLC | EddyWildcat; Wolfcamp Oil (Abolished) | CanceledOil | 12,171 | May 4, 2012 | 0 | 0 |
| Sitka Bsi State Com #001HHZ30-025-40556 | COG Operating LLC | LeaGrama Ridge; Bone Spring, North | ActiveOil | 15,446 | May 4, 2012 | 29,458 | 25,128 |
| Rider BRQ Federal Com #002HHZ30-025-40558 | COG Operating LLC | LeaFairview Mills; Bone Spring | PluggedOil | 14,205 | May 3, 2012 | 0 | 0 |
| Doowop 28 State #004H30-025-40555 | COG Operating LLC | LeaWC-025 G-06 S133628M; Abo | CanceledOil | 14,184 | May 2, 2012 | 0 | 0 |
| Really Scary Federal #005H30-015-40241 | COG Operating LLC | EddyWillow Lake; Bone Spring | ActiveOil | 12,615 | May 1, 2012 | 3,133 | 12,188 |
| Burkett 16 State #00230-015-40212 | COG Operating LLC | EddyFren; Glorieta-Yeso | CanceledOil | 6,500 | Apr 27, 2012 | 0 | 0 |
| Arabian 6 Fee #005HHZ30-015-40215 | COG Operating LLC | EddyPenasco Draw; SA-Yeso (Assoc) | CanceledOil | 7,390 | Apr 27, 2012 | 0 | 0 |
| Taylor D #01330-025-40544 | COG Operating LLC | LeaMaljamar; Yeso, West | CanceledOil | 7,100 | Apr 26, 2012 | 0 | 0 |
| Taylor D #02530-025-40547 | COG Operating LLC | LeaMaljamar; Yeso, West | CanceledOil | 7,100 | Apr 26, 2012 | 0 | 0 |
| Taylor D #02830-025-40548 | COG Operating LLC | LeaMaljamar; Yeso, West | CanceledOil | 7,100 | Apr 26, 2012 | 0 | 0 |
| Beech 25 Federal #01030-015-40209 | COG Operating LLC | EddyRed Lake; Glorieta-Yeso, Northeast | CanceledOil | 5,090 | Apr 20, 2012 | 0 | 0 |
| Beech Federal #00830-015-40198 | COG Operating LLC | EddyRed Lake; Glorieta-Yeso, Northeast | CanceledOil | 3,800 | Apr 19, 2012 | 0 | 0 |
| Doc Bhu State Com #005H30-015-39792 | COG Operating LLC | EddyPierce Crossing; Bone Spring, East | ActiveOil | 13,800 | Apr 5, 2012 | 1,556 | 4,145 |
| Burton 35 #00130-025-40510 | COG Operating LLC | LeaRed Hills; Wolfcamp (Gas) | PluggedGas | 13,992 | Apr 4, 2012 | 0 | 0 |
| Burkett 16 State #00330-015-40121 | COG Operating LLC | EddyFren; Glorieta-Yeso | CanceledOil | 6,500 | Mar 28, 2012 | 0 | 0 |
| Sro State Com #018H30-015-39999 | COG Operating LLC | EddyHay Hollow; Bone Spring | ActiveOil | 17,753 | Mar 6, 2012 | 6,853 | 56,953 |
| Superfortress 29 Federal #004H30-015-39975 | COG Operating LLC | EddyHackberry; Bone Spring | ActiveOil | 13,375 | Feb 21, 2012 | 3,115 | 10,847 |
| Lucky Bamboo 5 Federal #003HHZ30-015-39914 | COG Operating LLC | EddyPurple Sage; Wolfcamp (Gas) | ActiveGas | 13,127 | Feb 6, 2012 | 165 | 8,113 |
| High Plains 15 State Com #001H30-025-40424 | COG Operating LLC | LeaWildcat; Abo | CanceledOil | 14,058 | Jan 31, 2012 | 0 | 0 |
| West Pearl 36 State #002HHZ30-025-40425 | COG Operating LLC | LeaLea; Bone Spring | ActiveOil | 15,315 | Jan 31, 2012 | 2,905 | 3,356 |
| Burch Keely Unit #71830-015-39920 | COG Operating LLC | EddyBurch Keely; Glorieta-Upper Yeso | CanceledOil | 4,800 | Jan 29, 2012 | 0 | 0 |
| Burch Keely Unit #41930-015-39906 | COG Operating LLC | EddyBurch Keely; Glorieta-Upper Yeso | CanceledOil | 4,806 | Jan 25, 2012 | 0 | 0 |
| Airstrip 6 State Com #003CHZ30-025-40409 | COG Operating LLC | LeaScharb; Bone Spring | CanceledOil | 15,500 | Jan 25, 2012 | 0 | 0 |
| Patton 5 Fee #00430-015-39842 | COG Operating LLC | EddyPenasco Draw; SA-Yeso (Assoc) | PluggedOil | 5,065 | Jan 20, 2012 | 0 | 0 |
| Tiger 11 Federal #001HHZ30-025-40430 | COG Operating LLC | LeaLea; Bone Spring | ActiveOil | 15,596 | Jan 19, 2012 | 881 | 526 |
| Burch Keely Unit #71030-015-39827 | COG Operating LLC | EddyGrayburg Jackson; Sr-Q-G-SA | CanceledOil | 4,800 | Jan 9, 2012 | 0 | 0 |
| Yellowstone 3 Federal #00330-015-39823 | COG Operating LLC | EddyWC-015 G-02 S262503L; Bone Spring | ActiveOil | 8,326 | Jan 5, 2012 | 0 | 443 |
| Empire 23 State #00130-015-39799 | COG Operating LLC | EddyEmpire; Glorieta-Yeso | CanceledOil | 5,250 | Dec 21, 2011 | 0 | 0 |
| Palomino 12 Fee #001HHZ30-015-39780 | COG Operating LLC | EddyAtoka; Glorieta-Yeso | CanceledOil | 7,379 | Dec 16, 2011 | 0 | 0 |
| Dexter Federal #01130-015-39796 | COG Operating LLC | EddyLoco Hills; Glorieta-Yeso | CanceledOil | 6,150 | Dec 16, 2011 | 0 | 0 |
| Dexter Federal #01530-015-39797 | COG Operating LLC | EddyLoco Hills; Glorieta-Yeso | CanceledOil | 6,800 | Dec 16, 2011 | 0 | 0 |
| Trigg 5 Federal Com #001H30-015-39798 | COG Operating LLC | EddyWildcat; Wolfcamp Oil (Abolished) | PluggedOil | 12,534 | Dec 16, 2011 | 0 | 0 |
| Lightning P-38 State #003HHZ30-025-40375 | COG Operating LLC | LeaBerry; Bone Spring, North | ActiveOil | 15,279 | Dec 16, 2011 | 3,886 | 8,680 |
| Nile 34 Federal #002H30-015-39789 | COG Operating LLC | EddyWalters Lake; Bone Spring | PermittedOil | 11,898 | Dec 14, 2011 | 0 | 0 |
| Canyon BJK State Com #002H30-015-39735 | COG Operating LLC | EddyNash Draw; Delaware/BS (Avalon Sand) | ActiveOil | 14,344 | Dec 6, 2011 | 665 | 1,221 |
| Redbud Federal #00330-015-39759 | COG Operating LLC | EddyRed Lake; Glorieta-Yeso, Northeast | PermittedOil | 4,760 | Dec 6, 2011 | 0 | 0 |
| Cosmo 8 State #004HHZ30-025-40348 | COG Operating LLC | LeaBerry; Bone Spring, South | ActiveOil | 14,841 | Dec 6, 2011 | 3,173 | 6,893 |
| Lobo 26 State #001HHZ30-025-40349 | COG Operating LLC | LeaWC-025 G-06 S213326D; Bone Spring | ActiveOil | 15,312 | Dec 6, 2011 | 8,245 | 21,810 |
| Lobo 26 State #002C30-025-40350 | COG Operating LLC | LeaWC-025 G-06 S213326D; Bone Spring | CanceledOil | 15,500 | Dec 6, 2011 | 0 | 0 |
| Pygmy 27 State Com #001HHZ30-025-40352 | COG Operating LLC | LeaWC-025 G-06 S213326D; Bone Spring | ActiveOil | 15,303 | Dec 6, 2011 | 7,925 | 7,228 |
| Burch Keely Unit #717E30-015-39756 | COG Operating LLC | EddyBurch Keely; Glorieta-Upper Yeso | CanceledOil | 4,800 | Dec 1, 2011 | 0 | 0 |
| Gissler Federal #02430-015-39757 | COG Operating LLC | EddyLoco Hills; Glorieta-Yeso | CanceledOil | 5,900 | Dec 1, 2011 | 0 | 0 |
| Patton 5 Fee #005HHZ30-015-39715 | COG Operating LLC | EddyAtoka; Glorieta-Yeso | CanceledOil | 7,160 | Nov 30, 2011 | 0 | 0 |
| Mustang 34 Fee #004HHZ30-015-39719 | COG Operating LLC | EddyPenasco Draw; SA-Yeso (Assoc) | CanceledOil | 7,178 | Nov 30, 2011 | 0 | 0 |
| Livingston Ridge 36 State #004HHZ30-015-39683 | COG Operating LLC | EddyLivingston Ridge; Bone Spring | CanceledOil | 3,479 | Nov 23, 2011 | 0 | 0 |