Patent ID: 8752647

Claim:
A method, the method comprising: deploying a mud motor in a wellbore, the mud motor comprising: an outer housing having an upper portion and a lower portion; a power section disposed within the housing for rotating a passageway housing in response to fluid flow through the power section; a passageway disposed in the passageway housing where a small fluid volume is created between the passageway housing and the outer housing; a bearing assembly for facilitating the rotation of the passageway housing; and a hydraulic apparatus for balancing a pressure drop experienced across the bearing assembly due to frictional flow of fluid through the passageway, the hydraulic apparatus having a nozzle disposed in the passageway and a port in fluid communication with the small fluid volume and the nozzle; flowing fluid through the mud motor to produce a rotary output from the mud motor; and maintaining substantially balanced pressure across sealing elements of the bearing assembly.