Apparatus for wellbore communication

Details Apparatus for wellbore communication Apparatus for wellbore communication

2004-07-09

2008-08-19

Neuder, William P (Department: 3672)

Wells

Processes

Assembling well part

C166S065100, C175S040000

Reexamination Certificate

active

07413018

ABSTRACT:
Methods and apparatus for communicating between surface equipment and downhole equipment. One embodiment of the invention provides a wellhead assembly that allows electrical power and signals to pass into and out of the well during drilling operations, without removing the valve structure above the wellhead. Another embodiment of the invention provides an electromagnetic casing antenna system for two-way communication with downhole tools. Another embodiment of the invention provides an antenna module for a resistivity sub that effectively controls and seals the primary/secondary interface gap.

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