Patent attributes
A downhole generator comprises a turbine coaxially disposed inside a section of drillstring and that will be spun when hydraulic or pneumatic flows are pushed through to a drillbit motor on a distal end. The turbine, in turn, spins permanent magnets in an orbit around the outside of a cylindrical containment shell. Such containment shell is made of titanium or aluminum and will allow the spinning magnets fields to enter and induce electrical currents in coils within. Current from the coils is rectified and filtered to provide a DC operating voltage through intrinsically safe connectors to various loads including drillstring steering controls, radars, and telemetry circuits. The hydraulic and pneumatic flows stream past all around the cylindrical containment shell from the turbine on their way to the drillbit motor.
