Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Reexamination Certificate
2005-08-02
2005-08-02
Gregory, Bernarr E. (Department: 3663)
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
C367S073000, C324S333000
Reexamination Certificate
active
06925031
ABSTRACT:
Measurements made by a cross-dipole acoustic logging tool in a borehole are processed to determine the principal directions of azimuthal anisotropy of a subsurface formation. Measurements indicative of azimuthal resistivity variations are also made with a multicomponent induction logging tool. These electrical measurements are processed using the principal direction determined from acoustic measurements to give an estimate of azimuthal resistivity variations. Based on modeling results, azimuthal resistivity variations are interpreted to estimate a fracture depth in the rock for known fluids therein.
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Fanini Otto N.
Kriegshauser Berthold
Mollison Richard A.
Tang Xiao Ming
Wang Tsili
Baker Hughes Incorporated
Hughes Scott A
Madan Mossman & Sriram P.C.
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