E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 21/06 (2006.01) B01F 7/18 (2006.01) B01F 13/04 (2006.01) B01F 15/00 (2006.01) F16M 1/04 (2006.01)
Patent
CA 2495762
An agitator for agitating drilling fluid or other slurries or mixtures in a tank includes a pressurized and fluid-free compartment within the tank. The motor driving the agitator is housed in the fluid-free compartment. Control apparatus senses fluid levels and, in conjunction with a compressed gas source, maintains the compartment fluid-free. Additionally, when the fluid level in the enclosure drops to a predetermined minimum, the speed of the agitator may be slowed.
Mezzatesta Federico Alberto
Morgenthaler Michael R.
Deeth Williams Wall Llp
National-Oilwell L.p.
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