ANISOTROPY AND DIP ANGLE DETERMINATION USING ELECTROMAGNETIC (EM) IMPULSES FROM TILTED ANTENNAS

ANISOTROPY AND DIP ANGLE DETERMINATION USING ELECTROMAGNETIC (EM) IMPULSES FROM TILTED ANTENNAS

Transient responses of a tri-axial resistivity tool corresponding to an electromagnetic (EM) impulse are derived. A transient response of a directional resistivity tool (DRT) corresponding to the EM impulse is derived based on the transient responses of the tri-axial resistivity tool. A theoretical...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: HAGIWARA, TERUHIKO
Format: Patent
Sprache:eng ; fre
Schlagworte:
DETECTING MASSES OR OBJECTS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:Transient responses of a tri-axial resistivity tool corresponding to an electromagnetic (EM) impulse are derived. A transient response of a directional resistivity tool (DRT) corresponding to the EM impulse is derived based on the transient responses of the tri-axial resistivity tool. A theoretical late time transient response of the DRT is derived based on the transient response of the DRT. The late time transient response of the DRT is measured. An anisotropy, a horizontal conductivity, and a dip angle are determined based on the measured late time transient response and the theoretical late time transient response.