Flushing system in drill bits

A method for configuring a drill bit to flush cut matter from a bore hole, the method comprising:

• providing an inlet in a body of the drill bit to facilitate supply of pressurized fluids to the bore hole;
• providing at least one main opening in a cutting surface that is in communication with the inlet, wherein the at least one main opening defines a main passageway originating from the inlet to the cutting surface;
• providing at least one secondary opening, in a peripheral surface surrounding the cutting surface, that is in communication with the inlet, wherein
• the at least one secondary opening defines a secondary passageway originating from the inlet to the peripheral surface,
• the secondary passageway being disposed at an angle with respect to a horizontal reference plane that is defined between the inlet and the origin of the main passageway and is perpendicular to a central longitudinal axis of the body, and
• the origin of the secondary passageway from the inlet being positioned at a distance from the horizontal reference plane;
• determining a diameter of the drill bit;
• determining velocity of the pressurized fluids through the at least one secondary opening;
• determining a pressure differential between a pressure of the pressurized fluids around the cutting surface relative to a pressure of the pressurized fluids at the inlet;
• and
• reconfiguring the secondary opening based on the diameter of the drill bit, the velocity and the pressure differential.