| Kissell #242-441-34621 | Echo Production, Inc. only | Taylor, TX | Not on schedule | 6,000 | Jan 21, 2020 | — | — |
| Young #1HHZ42-197-31771 | Echo Production Inc. only | Hardeman, TXReprieve (Chappel) | PluggedOil | 9,500 | Jul 18, 2019 | — | — |
| C. G. Conley #5HHZ42-197-31712 | Echo Production, Inc. only | Hardeman, TX | Not on schedule | 8,100 | Sep 29, 2014 | — | — |
| Cascade-Melear #1HHZ42-197-31703 | Echo Production, Inc. only | Hardeman, TX | Not on schedule | 8,500 | Aug 21, 2014 | — | — |
| Sloan-Everett #142-429-36676 | Echo Production Inc. only | Stephens, TXCrystal Falls (Miss.) | PluggedOil | 5,000 | May 24, 2011 | — | — |
| Stiletto 16 State #003C30-015-34273 | Echo Production Inc only | Eddy, NMWildcat; Granite | CanceledOil | 3,500 | Aug 23, 2005 | 0 | 0 |
| Angell Ranch 36 State #00230-015-34281 | Echo Production Inc only | Eddy, NMFadeaway Ridge; Delaware | PluggedOil | 3,700 | Aug 23, 2005 | 0 | 0 |
| Sand Ranch 25 Federal #00130-005-63741 | Echo Production Inc only | Chaves, NMSand Ranch; Morrow (Gas) | PluggedGas | 9,999 | Nov 9, 2004 | 0 | 0 |
| East Livingston 31 Federal #00430-025-36911 | Echo Production Inc only | Lea, NM | CanceledOil | 9,000 | Oct 7, 2004 | 0 | 0 |
| East Livingston 31 Federal #00530-025-36912 | Echo Production Inc only | Lea, NMLivingston Ridge; Delaware, SE | PluggedOil | 8,800 | Oct 7, 2004 | 0 | 0 |
| East Livingston 31 Federal #00330-025-36656 | Echo Production Inc only | Lea, NMLivingston Ridge; Delaware, SE | PluggedOil | 8,850 | Feb 24, 2004 | 0 | 0 |
| East Livingston 31 Federal #00230-025-36381 | Echo Production Inc only | Lea, NMLivingston Ridge; Delaware, SE | PluggedOil | 8,792 | Aug 19, 2003 | 0 | 0 |
| Little Feat 27 Federal #00130-015-31609 | Echo Production Inc only | Eddy, NMWildcat; Granite | PluggedGas | 8,400 | Feb 14, 2001 | 0 | 0 |
| Echo Awf Federal #00130-015-31547 | Echo Production Inc only | Eddy, NMFeather; Miss, North (Gas) | PluggedGas | 7,900 | Jan 10, 2001 | 0 | 0 |
| James #00130-025-35288 | Echo Production Inc only | Lea, NMDiamondtail; Delaware, Southwest | PluggedOil | 9,018 | Dec 5, 2000 | 0 | 0 |
| Corsair 27 Federal #00530-025-35347 | Echo Production Inc only | Lea, NM | CanceledOil | 9,000 | Dec 4, 2000 | 0 | 0 |
| Corsair 27 Federal #00330-025-35313 | Echo Production Inc only | Lea, NM | CanceledOil | 9,000 | Oct 25, 2000 | 0 | 0 |
| Corsair 27 Federal #00230-025-35312 | Echo Production Inc only | Lea, NMTriste Draw; Delaware | PluggedOil | 8,980 | Oct 10, 2000 | 0 | 0 |
| Avion Federal #00330-025-34817 | Echo Production Inc only | Lea, NMDiamondtail; Delaware | PluggedOil | 8,950 | Dec 22, 1999 | 0 | 0 |
| S.W. Wakita Unit #6-1A35-053-22336 | Echo Production Inc only | Grant, OK | CanceledNo type on file | 5,100 | Nov 23, 1998 | — | — |
| Saunders #142-441-33893 | Echo Production Inc. only | Taylor, TXAudas-Graham (Fry Sand) | PluggedOil | 4,650 | Oct 27, 1998 | — | — |
| U.L. 39-6 #242-105-38105 | Echo Production Inc. only | Crockett, TXWildcat | PluggedOil | 1,800 | Mar 24, 1998 | — | — |
| Moren Kisinger Sand Unit #15A42-503-40844 | Echo Production, Inc. only | Young, TX | Not on schedule | 2,800 | Jun 10, 1997 | — | — |
| Hord #142-399-34524 | Echo Production, Inc. only | Runnels, TX | Not on schedule | 4,999 | May 8, 1997 | — | — |
| Shoemate Unit #iu42-503-40366 | Echo Production Inc. only | Young, TXYoung County Regular | PluggedOil | 5,000 | May 4, 1995 | — | — |
| James N. Leforce #4-1035-053-21798 | Echo Production Inc only | Grant, OK | PluggedOil | 6,100 | Aug 24, 1994 | — | — |
| Rhoades #4B42-503-39306 | Echo Production Inc. only | Young, TXYoung County Regular | PluggedOil | 4,700 | Aug 16, 1994 | — | — |
| Turner #142-447-34888 | Echo Production, Inc. only | Throckmorton, TX | Plugged | 4,700 | Jul 11, 1994 | — | — |
| Brown #142-009-40847 | Echo Production, Inc. only | Archer, TX | Plugged | 3,600 | Apr 29, 1994 | — | — |
| Kunkel Unit #142-009-40818 | Echo Production Inc. only | Archer, TXMegargel NE. (Miss) | PluggedOil | 5,200 | Dec 15, 1993 | — | — |
| Denison Unit #142-433-31991 | Echo Production, Inc. only | Stonewall, TX | Plugged | 6,700 | Nov 9, 1993 | — | — |
| Griffin Unit #142-009-40804 | Echo Production Inc. only | Archer, TXParkey (Miss.) | PluggedOil | 5,700 | Oct 12, 1993 | — | — |
| Jackson Trust #142-237-38026 | Echo Production Inc. only | Jack, TXBryson East | PluggedOil | 3,300 | Mar 9, 1993 | — | — |
| Schnelle #142-503-39386 | Echo Production Inc. only | Young, TXYoung County Regular (Gas) | PluggedGas | 4,999 | Feb 24, 1993 | — | — |
| Rhine #342-497-33766 | Echo Production Inc. only | Wise, TXBoonsville (Bend Congl. Gas) | PluggedGas | 6,500 | Nov 4, 1992 | — | — |
| Shoemate #142-503-40330 | Echo Production Inc. only | Young, TXWiley West (Miss.) | PluggedOil | 4,999 | Jul 6, 1992 | — | — |
| Horn John #a 142-077-30142 | Echo Production Inc. only | Clay, TXDougs West (Shannon Strawn Up.) | PluggedOil | 3,299 | Oct 23, 1991 | — | — |
| Sitta a #142-197-31180 | Echo Production Inc. only | Hardeman, TXThrash (Chappel) | PluggedOil | 9,000 | Jul 17, 1991 | — | — |
| Pcsl 29 #142-447-34781 | Echo Production Inc. only | Throckmorton, TXThrockmorton County Regular | PluggedOil | 4,950 | Jun 4, 1990 | — | — |
| Trammell #142-151-32224 | Echo Production Inc. only | Fisher, TXPardue (Canyon) | PluggedOil | 4,700 | Jun 28, 1989 | — | — |
| McNutt a #542-447-32848 | Echo Production Inc. only | Throckmorton, TXThrockmorton County Regular | PluggedOil | 5,000 | Jun 3, 1988 | — | — |
| Chandler E.T. #342-447-31138 | Echo Production Inc. only | Throckmorton, TXThrockmorton County Regular | PluggedOil | 4,850 | May 26, 1988 | — | — |
| Prideaux #442-009-39934 | Echo Production Inc. only | Archer, TXArcher County Regular | PluggedOil | 4,000 | Apr 15, 1988 | — | — |
| Hearne #142-503-39764 | Echo Production Inc. only | Young, TXYoung County Regular (Gas) | PluggedGas | 4,999 | Apr 12, 1988 | — | — |
| Prideaux #342-009-39923 | Echo Production Inc. only | Archer, TXArcher County Regular | PluggedOil | 4,000 | Apr 1, 1988 | — | — |
| Gardner-Simms #142-503-39747 | Echo Production Inc. only | Young, TXNewcastle NE. (Miss.) | PluggedOil | 4,999 | Mar 28, 1988 | — | — |
| Rock Orchard #142-503-39746 | Echo Production Inc. only | Young, TXBayex (Congl.) | PluggedGas | 4,999 | Mar 24, 1988 | — | — |
| Prideaux D #342-009-39910 | Echo Production Inc. only | Archer, TXArcher County Regular | PluggedOil | 2,990 | Mar 7, 1988 | — | — |
| Prideaux D #142-009-39874 | Echo Production Inc. only | Archer, TXArcher County Regular | PluggedOil | 2,999 | Dec 2, 1987 | — | — |
| Prideaux #242-009-39808 | Echo Production Inc. only | Archer, TXArcher County Regular | PluggedOil | 4,800 | Sep 4, 1987 | — | — |