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RISAnalysis of Downhole Measurements of Drill String Forces and Motions
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The records studied from tests made by Esso Production Research Company confirm and give quantitative values to many phenomena which have been observed qualitatively or which have been indicated ...
Modeling of Roller Cone Bit Lift-Off Dynamics in Rotary Drilling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Rotary drilling with roller cone bit is often accompanied by wide fluctuations of the weight on bit (WOB). In certain cases, the WOB periodically reduces to null. It has been postulated that ...