Invention Grant
US08354846B2 Method and apparatus for reducing effect of tool eccentricity in a borehole on multi-axial induction measurements 有权
减少井眼工具偏心对多轴向感应测量的影响的方法和装置

Method and apparatus for reducing effect of tool eccentricity in a borehole on multi-axial induction measurements
Abstract:
An apparatus, method and computer-readable medium are provided for estimating a resistivity property of an earth formation. A logging tool includes a first antenna arrangement and a second antenna arrangement of the logging tool; and at least one device for maintaining the first antenna arrangement and the second antenna arrangement in proximity to a wall of the borehole. The first antenna arrangement and the second antenna arrangement may be at substantially the same axial location on the logging tool. Alternately, the first antenna arrangement and the second antenna arrangement may be at different axial positions on the logging tool. Extendible arms of the logging tool are configured to extend one or more of the first antenna arrangement and the second antenna arrangement against a face of the borehole.
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