Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Reexamination Certificate
2006-02-16
2008-08-26
Aurora, Reena (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
C324S339000
Reexamination Certificate
active
07417436
ABSTRACT:
An electromagnetic logging tool includes a support configured for disposal in a well; at least one antenna mounted on the support; and a plurality of coils mounted on the support proximate the at least one antenna, wherein the plurality of the coils are configured for selective connection with the at least one antenna. A method for balancing an induction array on an electromagnetic logging tool includes measuring a mutual coupling between a transmitter and a receiver on the electromagnetic logging tool; and selectively connecting a subset of a plurality of coils on the electromagnetic logging tool to the transmitter or the receiver based on the measured mutual coupling.
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Chesser Scott S.
Davydychev Andrei I.
Finci Bulent
Hunka John F.
Vandermeer William B.
Aurora Reena
Castano Jaime
Fonseca Darla P.
Schlumberger Technology Corporation
Whittington Kenneth J.
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