Patent ID: 8162079

Claim:
An excavating system comprising: a pump directly connected to a flow region the flow region, the flow region having a first pressure and in direct fluid communication with a drill string having a drill bit on its lower end, such that the pump is in fluid communication with the flow region; a vessel including a suspension of a plurality of solid material impactors and a drilling fluid in selective fluid communication with the pump; a pressurizing device having an outlet in pressure communication with the vessel wherein the pressurizing device outlet pressure is selectively operable at a second pressure and wherein the second pressure exceeds the first pressure; and a flow line connecting the vessel to the flow region, the flow line operable at a third pressure when discharging the suspension from the vessel, the third pressure greater than the first pressure, wherein the flow line is configured to inject the suspension into the flow region based on a difference between the first and third pressure and further into the drill string.