METHOD FOR DETERMINING STRATIGRAPHIC POSITION OF A WELLBORE DURING DRILING USING COLOR SCALE INTERPRETATION OF STRATA AND ITS APPLICATION TO WELLBORE CONSTRUCTION OPERATIONS
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United States of America Patent
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Issued Date -
Jul 26, 2012
app pub date -
Jan 25, 2012
filing date -
Jan 26, 2011
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Abandoned
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Abstract
A method for formation structural interpretation while drilling a wellbore through subsurface rock formations includes interpreting rock formation strata with respect to measurements of a formation physical property made with respect to depth in an offset wellbore. A color is assigned to each of a plurality of selected value ranges of the measurements. The physical property of the formation is measured while drilling the wellbore through the subsurface rock formations. A color is assigned to the measurements made while drilling based on the assigned color to each of the selected value ranges. The assigned colors made while drilling are used to estimate a stratigraphic position of the wellbore during the drilling by comparing the assigned colors made while drilling to the colors assigned from the offset wellbore.
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