Operating instructions

INTRODUCTION
15 Nov 09 1-3
ACD-1500Degasser
Centrifugal Pump
Drilling fluid is drawn into the degasser from the bottom of the mud tank by the centrifugal pump.
The pump is driven by a shaft rotated by the electric motor at the top of the degasser. The shaft is
supported by two bearings that control the shaft movement in both thrust and radial directions.
Clamping collars installed on the shaft ensure that minimal thrust is applied to the vertical shaft.
Impact Plate
Fluid pumped upward through the riser by the centrifugal pump strikes the circular impact plate,
which disperses the fluid horizontally into the spray tank. Its slotted mounting holes permit vertical
positioning of the impact plate to vary the gap between the top of the riser and the plate. Serrated
tabs ensure positive setting of the gap at six locations. After properly positioning the impact plate,
tightening the attaching hardware secures the plate to a fitting at the top of the spray tank.
Spray Tank
Fluid dispersed at high velocity by the impact plate spreads across the interior surfaces of the
spray tank. The tank’s shape encourages release of entrained gas from the mud.
Figure 1-2 ACD-1500 Degasser Functional Diagram