During drilling operations in the Dukhan field, Qatar
Petroleum sought to increase solids control efficiency, retain base fluid, save
tank cleaning time, and reduce the fluid system footprint on its rigs.
Two MD-2 shakers were installed on a rig, replacing a setup
of three conventional shakers (a configuration retained on another rig for
comparison). The objective of the comparison was to evaluate the efficiency of
the MD-2 shakers by monitoring mud content of cuttings and testing flow rate
and solids-handling capacity.
The MD-2 shakers produced drier cuttings with significantly
less mud on cuttings; the cuttings passed a paint filter test for free liquids
without requiring a drying shaker for transportation to disposal sites. The
two-shaker setup handled the same flow rate as the previous setup of three
shakers without experiencing overspill.