Title:
IMPACT EXCAVATION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO2006019977
Kind Code:
A3
Abstract:
A method and system for excavating a subterranean formation using a fluid comprising pumping the fluid through at least one nozzle such that a velocity of the fluid when exiting the nozzle is greater than a velocity of the fluid entering the nozzle. A plurality of solid material impactors are introduced into the fluid and circulated with the fluid through the nozzle. A substantial portion by weight of the solid material impactors has a mean diameter of equal to or less than approximately 0.100 inches. The fluid is pumped at a pressure level and a flow rate level sufficient to satisfy an impactor mass-velocity relationship wherein a substantial portion by weight of the solid material impactors has a minimum kinetic energy of approximately 0.075 Ft Lbs when exiting the nozzle. The substantial portion by weight of solid material impactors exit the nozzle and contact the formation.
Inventors:
TIBBITTS GORDON (US)
Application Number:
PCT/US2005/025092
Publication Date:
May 18, 2006
Filing Date:
July 15, 2005
Export Citation:
Assignee:
PARTICLE DRILLING INC (US)
TIBBITTS GORDON (US)
TIBBITTS GORDON (US)
International Classes:
E21B7/16; E21B7/18
Foreign References:
| US6386300B1 | 2002-05-14 | |||
| US6581700B2 | 2003-06-24 | |||
| US3576221A | 1971-04-27 | |||
| US4042048A | 1977-08-16 |
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