Drilling a well with predicting sagged fluid composition and mud weight
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United States of America Patent
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Nov 17, 2015
Grant Date -
Jul 24, 2014
app pub date -
Jan 21, 2013
filing date -
Jan 21, 2013
priority date (Note) -
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Abstract
Methods of drilling or treating a well including the steps of: designing a fluid with high-gravity solids (e.g., barite); calculating the sagged fluid mud weight after allowing for sag according to formulas; forming a fluid according to the sagged fluid mud weight; and introducing the fluid into the well. The methods can be used to help control the well or to avoid excessive drilling torque or pressure, kick, or lost circulation due to sag of high-gravity solids such as barite.
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