Well bore communication pulser

Communications – electrical: acoustic wave systems and devices – Wellbore telemetering – Through well fluids

Reexamination Certificate

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Details

C175S040000, C367S083000

Reexamination Certificate

active

07423932

ABSTRACT:
The poppet portion of a signal valve is driven rotationally by a mud motor and the rotation is used, in conjunction with a rotary-to-linear motion converter, to cause the poppet to move axially relative to a cooperating orifice in response to initiating action from the related down hole instrument. The rotation of the poppet is optionally used to power an alternator to provide electric power for use in the apparatus.

REFERENCES:
patent: 4034833 (1977-07-01), Jeter
patent: 5020609 (1991-06-01), Jerer
patent: 5117398 (1992-05-01), Jeter
patent: 5787052 (1998-07-01), Gardner et al.
patent: 6002643 (1999-12-01), Tchakarov et al.
patent: 2005/0260089 (2005-11-01), Hahn et al.

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