Schlumberger

Industry Article: Quantifying Drilling Vibration Challenges

Quantifying Drilling Vibration Challenges
Publication: Offshore
Publication Date: 08/01/2011

A Schlumberger team analyzed BHA vibration measurements from 16 bit runs from deepwater exploration wells offshore Brazil. The team applied methodologies used to study the damaging effects of earthquakes on surface structures to calculate the cumulative dynamic demand imposed on the drilling assembly during a bit run. A quantified risk index was propposed - able to be calculated in real time - to guide operational decisions and prevent catastrophic drillstring failure.



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