Method using a pluraliyt of electrode, including a reference electrode, for recording a spontaneous potential curve in a borehole while drilling
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United States of America Patent
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Apr 7, 1992
Grant Date -
N/A
app pub date -
Sep 11, 1990
filing date -
Sep 11, 1990
priority date (Note) -
Expired
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Abstract
An apparatus and method for obtaining a spontaneous potential curve, whichpparatus is comprised of: (a) an elongated body: (b) a series of vertically spaced electrodes for measuring electrical potential, wherein one of the electrodes is a reference electrode; and (c) a means for recording or transmitting the various electrical potentials to the surface. Preferably the apparatus is part of drillstring for taking measurements while drilling.
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