Patent ID: 6568489
Filing Date: 2003-05-27
Classification: E21B,Y10S

Abstract:
A downhole lubrication system, comprising:a lubricant ejector having a reservoir defined therein to hold replenishment lubricant and including a driver to move at least a portion of such replenishment lubricant out of the reservoir in response to a pressure from a flowing fluid, wherein the lubricant ejector is defined to be moved downhole with apparatus requiring lubrication and having a lubrication chamber; and a flow coupler connected to the lubricant ejector such that the flow coupler channels to the lubrication chamber replenishment lubricant moved out of the reservoir in response to operation of the driver; wherein the lubricant ejector includes: a rotor of a downhole motor, the rotor having the reservoir defined therein; a piston disposed in the reservoir; and a plug connected to the rotor, the plug having an orifice defined therethrough such that the pressure communicates through the orifice to act on the piston implementing the driver.