Main functions and purpose of flushing feathers (PP, RPM):
Bottomhole bottomhole cleaning.
The flushing feather is used to remove debris and drilled rock from the bottomhole zone, ensuring efficient bit operation.
Maintaining normal drilling fluid flow.
Helps maintain adequate mud flow to cool and lubricate the drilling tools.
Preventing drill bit clogging.
Reduces the chance of rock particles clogging the bit and other drill string components.
Maintaining pressure in the well.
Helps normalize well pressure and prevents gas or fluid from entering the drilling fluid bed.
Types of flushing feathers (PP, RPM):
PP flushing feather - used in standard drilling conditions to ensure efficient circulation of mud and removal of drilled rock.
RPM flushing feather - modification of feathers designed for increased load and work in difficult geological conditions (for example, when drilling in highly abrasive or hard rocks).
Advantages of using flushing feathers:
Effective removal of cuttings and debris.
Maintaining normal drilling fluid flow.
Prevent clogging of drilling tools.
Reducing the risk of bit breakage.
Improved drilling quality in difficult drilling conditions.