David Tunison Snow
Engineers at 83 Ave, Arvada, CO
License number
Colorado 10995
Issued Date
Feb 19, 1972
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
9813 W 83Rd Ave, Arvada, CO 80005
Professional information
Deviated Drilling Method For Water Production
US Patent:
2006020, Sep 14, 2006
Filed:
Apr 28, 2005
Appl. No.:
11/116715
Inventors:
David Snow - Arvada CO, US
International Classification:
E21B 7/04
US Classification:
175061000, 166050000
Abstract:
Method for drilling horizontal or deviated water wells through hard and fragmented rock formations that are prone to caving, such as Hawaiian basalts. The method may be used to drill into basal aquifers directly underlain by salt water, compartmented aquifers, and perched aquifers. The method uses deviated drilling and may use formation pre-grouting, casing drilling, and/or percussion drilling, and a percussion drilling tool may be combined with a casing drill string.
Deviated Drilling Method For Water Production
US Patent:
7654343, Feb 2, 2010
Filed:
Mar 15, 2007
Appl. No.:
11/686809
Inventors:
David T. Snow - Arvada CO, US
International Classification:
E21B 7/04
US Classification:
175 61, 175 62
Abstract:
Method for drilling horizontal or deviated fresh water wells through such volcanics as occur in Hawaii, including hard lavas and fragmented interbeds that are prone to caving. The method provides effective means to drill into basal aquifers directly underlain by salt water, or into compartmented or confined aquifers or perched aquifers. The method uses deviated drilling and may use formation grouting, casing or drill-stem drilling, percussion or rotary drilling and all combinations thereof.