RC Schematic


The Reverse Circulation system requires a continuous Air Flow into the inner tube to maintain continuous suspension of sample flow in the Inner Tube.

Operators must ensure that all the sample is delivered before turning the air off.

Any interruption of Air Flow at or to the bit face holes will result in in sample blockages in the inner tube and return lines. If partial blockage of sample occurs, or if drill pipes commence to stick in the hole, operators should utilize the dual blow down or blow back features of the Blow Down Valve to clean blockages or increase outside circulation to free up the drill pipe.

Failure to monitor Sample flows to the cyclone will interrupt drilling operations.