Method of controlling cuttings accumulation in high-angle wells
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United States of America Patent
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Jul 12, 1994
Grant Date -
N/A
app pub date -
Mar 17, 1993
filing date -
Mar 17, 1993
priority date (Note) -
Expired
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Abstract
A method is provided, based on assigned drilling variables, for predicting the area of open region above a bed of cuttings resulting from drilling a high-angle well. The area of the bit used in drilling is compared with the area of the open region and drill pipe to determine a Hole-Cleaning Ratio. Occurrences of sticking of drill pipe or other drilling problems in prior-drilled wells are correlated with Hole Cleaning Ratio in those wells to determine a relationship for predicting risk of drilling problems in wells of interest. Risk factors so determined are used to modify conditions or equipment during drilling or to plan future wells.
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