WATER LUBRICATED LINE SHAFT BEARING AND LUBRICATION SYSTEM FOR A GEOTHERMAL PUMP

摘要

The present invention provides a water lubricated line shaft bearing assembly, compπsing an outer annular steel shell and an inner layer made of low function material attached to the outer shell, the inner layer having a non-uniform thickness which is formed with wall portions of increased thickness defining a plurality of shaft engaging portions and with wall portions of reduced thickness defining a plurality of lubricant passages The shaft engaging portions are capable of being journaled on a line shaft adapted to drive a downhole geothermal production pump and the steel shell is engageable with an inner wall of a lubrication tube vertically extending through a water column through which pumped geothermal fluid is delivered, lubrication water bled from the pumped geothermal fluid being used to supply lubrication water through the lubricant passages