Determination of horizontal resistivity of formations utilizing induction-type logging measurements in deviated borehole
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United States of America Patent
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Oct 12, 1999
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N/A
app pub date -
Jun 12, 1996
filing date -
Jun 12, 1996
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Abstract
A method for determining horizontal resistivity of an anisotropic formation and a formation anisotropy response factor with an induction logging tool is claimed. The method utilizes two differing induction type measurements to determine the horizontal resistivity for the formation without knowledge of a borehole dip angle. The differing induction measurements may be different types of measurements or the same type of measurement made under differing operating conditions. The method further discloses a means for determining the vertical resistivity of an anisotropic formation based on the dip angle, the horizontal resistivity and the formation anisotropy response factor.
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