Mud pulser
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United States of America Patent
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N/A
Issued Date -
Feb 1, 2007
app pub date -
Jul 29, 2005
filing date -
Jul 29, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An MWD/LWD mud pulser orifice for reducing erosion on the discharge side of the orifice has an upstream conduit, a poppet mounted in the upstream conduit reciprocal with respect to the orifice, the orifice is fixed to the upstream conduit having a flow restriction aperture and a discharge side, and a downstream conduit fixed to the discharge side of the orifice has an inner diameter wall. The flow restriction aperture has a center hole plugged by the poppet when the poppet is moved forth into an engaged position, and axial slots integral with and distal from the center hole. The discharge side of the orifice has a smooth transition taper from the center hole to the inner diameter wall in distal regions (excluding the regions of the axial slots).
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