Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2008-05-27
2008-05-27
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C324S339000
Reexamination Certificate
active
11400097
ABSTRACT:
A misalignment angle between the transmitter and receiver antenna of a multicomponent induction logging tool are estimated from quadrature component signals at multiple frequencies. A transmitter antenna having a first axial direction on a logging tool is excited at a plurality of frequencies. Signals responsive to the excitation are received at a receiver antenna having a second axial direction. A direct field between the transmitter antenna and the receiver antenna is obtained by performing multi-frequency focusing of the received signals. The misalignment angle is estimated from the direct field.
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Corley Bill H.
Pelegri Luis M.
Rabinovich Michael B.
Tabarovsky Leonty A.
Baker Hughes Incorporated
Barlow John
Le Toan M.
Madan Mossman & Sriram P.C.
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