Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Earth science
Reexamination Certificate
2011-08-02
2011-08-02
Tsai, Carol S (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Earth science
C702S007000, C702S011000, C702S014000, C324S338000, C324S339000, C324S343000, C340S854600
Reexamination Certificate
active
07991555
ABSTRACT:
An orientation vector, referred to hereinafter as the “geosteering vector,” is directed to the more conductive formation area within the DOI of the tool and away from the more resistive formation areas. Accordingly, drilling in a direction opposite the geosteering vector leads to more resistive formation. Also, the disclosed geosteering vectors obtained from the real and imaginary components will not align with each other for non-planar formations and therefore the misalignment of the geosteering obtained from real and imaginary components is indicative of a non-planar formation. A superposition method is disclosed which can be used to calculate electromagnetic (EM) couplings in a non-planar geometry formation (as well as in a planar geometry formation) in real time, without requiring two or three dimensional modeling calculations.
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Li Qiming
Omeragic Dzevat
Seydoux Jean
Tabanou Jacques R.
Tabanou, legal representative Bernadette
Fonseca Darla
Griffin Jeff
Rutherford Charlotte
Schlumberger Technology Corporation
Tsai Carol S
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