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| Number | Title | Issue Date |
| 7677318 | Well maintenance equipment and procedure The present invention relates to a method of removing deposits from various types of wells (17) including environmental recovery, water supply, horizontal, barrier, injection, recharge, and/or disposal wells (17). The method includes equipping a well (... | 03/16/2010 |
| 7337845 | Well maintenance equipment and procedure The present invention relates to a method of removing deposits from various types of wells (17) including environmental recovery, water supply, horizontal, barrier, injection, recharge, and/or disposal wells (17). The method includes equipping a well (... | 03/04/2008 |
| 7270179 | Method for stimulation of liquid flow in a well An improved method of controlled energy delivery utilizing solid, liquid, and gaseous carbon dioxide (CO2) into a water well and the surrounding aquifer to remove deposited material which may cause loss of capacity in wells and a variety of water quality ... | 09/18/2007 |
