METHOD AND APPARATUS FOR ENHANCING FORMATION RESISTIVITY IMAGES OBTAINED WITH DOWNHOLE GALVANIC TOOLS

The average current at a plurality of measure electrodes of a resistivity imaging tool is determined and subtracted from the individual measure currents to give a resistivity image with improved dynamic range.

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Bibliographische Detailangaben
Hauptverfasser:	GOLD, Randy, FORGANG, Stanislav W
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DETECTING MASSES OR OBJECTS EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS GEOPHYSICS GRAVITATIONAL MEASUREMENTS MEASURING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	The average current at a plurality of measure electrodes of a resistivity imaging tool is determined and subtracted from the individual measure currents to give a resistivity image with improved dynamic range.