Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Reexamination Certificate
2006-08-15
2006-08-15
LeDynh, Bot (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
C324S324000, C324S346000, C324S369000
Reexamination Certificate
active
07091722
ABSTRACT:
A sensor for measuring mud resistivity in a borehole includes a transmitter having a magnetic moment in a first direction; and a receiver having a magnetic moment in a second direction, wherein the first direction and the second direction are substantially different, wherein the transmitter and the receiver are disposed in an insulating collar of a downhole tool, and wherein the transmitter is disposed at a selected distance no more than 10 inches from the receiver along a longitudinal axis of the downhole tool.
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Homan Dean M.
Omeragic Dzevat
Sebline Nicolas
Wang Hanming
LeDynh Bot
McEnaney Kevin P.
Schlumberger Technology Corporation
Segura Victor H.
White Bryan L.
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