Apparatus and method for removing drillhole debris

Details Apparatus and method for removing drillhole debris Apparatus and method for removing drillhole debris

E - Fixed Constructions

21

B

E21B 21/00 (2006.01) E21B 4/14 (2006.01) E21B 21/10 (2006.01) E21B 21/14 (2006.01)

Patent

CA 2119249

2119249 9306334 PCTABS00021 A device (3) and method for removing debris from a drillhole (1), includes positioning a separator adjacent to a down-the-hole percussive drillhead, for removing water and other matter from the percussive fluid prior to the percussive fluid entering the drillhead. The water and other matter are ejected into the drillhole to remove the debris, and backflow of debris and water into the separator and drillhead is prevented, during periods when the percussive fluid flow ceases.

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