Patent ID: 6504258
Filing Date: 2003-01-07
Classification: E21B,F03G,H02N

Abstract:
A downhole power generator, comprising:a housing having a first axial flow passage formed therethrough; and a power generating structure including a nozzle and a power generating assembly, the nozzle having a second flow passage formed therethrough and in entirely non-valved communication with the first flow passage, the second flow passage having a longitudinal axis, the nozzle vibrating along the longitudinal axis in response to fluid flow through the first and second flow passages, and the power generating assembly producing electrical power in response to the nozzle vibration, the power generating assembly including a magnet and a coil, one of the magnet and the coil being attached to the nozzle, and the other of the magnet and the coil being attached to the housing so that, as the nozzle vibrates relative to the housing, relative displacement is produced between the coil and the magnet.