Electricity: measuring and testing – Of geophysical surface or subsurface in situ – Using electrode arrays – circuits – structure – or supports
Reexamination Certificate
2006-05-16
2006-05-16
Tokar, Michael (Department: 2862)
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
Using electrode arrays, circuits, structure, or supports
C324S374000
Reexamination Certificate
active
07046010
ABSTRACT:
A multi-mode resistivity tool measures at multiple depths into the near-borehole formation. By use of a four mode tool, measuring to four depths at the formation, a more accurate invasion zone resistivity measurement may be made than previously known. The tool itself is shown as including six concentric electrodes, although not every electrode is necessary for every mode.
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patent: 5570024 (1996-10-01), Vail, III
patent: 6801039 (2004-10-01), Fabris et al.
patent: 2002/0101242 (2002-08-01), Bittar
patent: 2005/0001624 (2005-01-01), Ritter et al.
David P. Shattuck et al; Scale Modelling of the Laterlog Using Synthetic Focusing Methods;The Log Analyst Jul.-Aug. 1987; (pp. 357-369).
SPE 89THAnnual Technical Conference (SEP 28425);Invasion Profiling With a Multiple Depth of Investigation Electromagnetic Wave Resistivity Sensor; M. S. Bittar et al; Sep. 25-28, 1994; (pp. 1-23).
Bittar Michael S.
Hu Guoyu (David)
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Jackson Tyrone
Tokar Michael
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