Electricity: measuring and testing – Of geophysical surface or subsurface in situ – With radiant energy or nonconductive-type transmitter
Reexamination Certificate
2011-03-08
2011-03-08
Aurora, Reena (Department: 2858)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
With radiant energy or nonconductive-type transmitter
C324S338000, C702S011000
Reexamination Certificate
active
07902827
ABSTRACT:
An induction logging device is provided with additional electrodes. One set of electrodes provides voltages that are indicative of the current distribution in the borehole. The output of the first set of electrodes may be used for estimating formation resistivity. A second set of electrodes may be used to provide an image of the formation.
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Barber et al.; “Determining Formation Resistivity Anisotropy in the Presence of Invasion”, SPE 90526, SPE Annual Technical Conference and Exhibition, Houston, Texas, Sep. 26-29, 2004, pp. 1-25.
Rosthal et al.; “Field Test Results of an Experimental Fully-Triaxial Induction Tool”, SPWLA 44th Annual Logging Symposium, Paper QQ, Jun. 22-25, 2003, 2003, pp. 1-13.
Moran et al.;Basic Theory of Induction Logging and Application to Study of Two-Coil Sondes, Geophysics, vol. XXVII, No. 6, Part I (Dec. 1962), pp. 829-858.
Crosskno Michael S.
Crosskno, legal representative Tammye
Fanini Otto N.
Forgang Stanislav W.
Gold Randy
Aurora Reena
Baker Hughes Incorporated
Mossman Kumar & Tyler PC
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