US Patent:
20090200080, Aug 13, 2009
Inventors:
Gordon A. Tibbitts - Murray UT, US
Paul O. Padgett - Casperl WY, US
Nathan J. Harder - Magnolia TX, US
Adrian Vuyk, JR. - Houston TX, US
Gregory G. Galloway - Conroe TX, US
Harry Curlett - Cody WY, US
Samuel Curlett - Powell WY, US
International Classification:
E21B 7/18
E21B 7/16
Abstract:
A system and method for excavating a subterranean formation, according to which a suspension of liquid and a plurality of impactors are introduced into at least one cavity formed in a body member and are discharging from the cavity so that the impactors remove a portion of the formation. The impactors are separated from at least a portion of the fluid, and are passed to a conduit so that the impactors accumulate in the conduit before being removed from the conduit.