Waterway Configuration (Channel Flushing)
Waterway without discharge hole is the standard type, applied in many normal formations
This waterway is wider than standard type applied in formations in which there is much rock debris, eg. Clay, shale, coal gangue, etc
It is suitable for relatively hard fractured formations or hard competent formations
Suitable for medium hard fractured formations where there is much slurry and rock debris
It is suitable for triple core barrels, to improve recovery rate. It reduces the flushing fluid’s erosion against the core during drilling
