Vortex chamber mud pulser

Details Vortex chamber mud pulser Vortex chamber mud pulser

1994-06-07

1995-10-03

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Wellbore telemetering

Through well fluids

181106, 137812, 137813, H04H 900

Patent

active

054558042

ABSTRACT:
A vortex chamber fluid pulser selectively produces pressure pulses in fluid flowing therethrough by the alternating insertion and retraction of a flow-disrupting tab into and out of an annular vortex chamber having an inlet and a pair of opposed axial outlets. Insertion of the tab disrupts the normally radial flow of fluid through the chamber and outlets causing the flow to become vortical; retraction of the tab causes a second pressure pulse as the flow returns to radial, sending a sequence of pressure pulses capable of carrying encoded signals to a transducer remotely located in the fluid.

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