: This paper presents a rock/bit interaction model as well as its implementation in the dynamic simulation of drilling operation using rotary tri-cone bit. The new rock/bit interaction model assumes, firstly, at any instant during drilling operation the rock material fractures under a complex stress field created by the teeth attacking (touching) the rock surface; Secondly, the process for each tooth to attack the rock surface (cratering) can be divided into four stages: (a) initial contact, (b) indentation, (c) scraping or gouging, and (d) departure; And thirdly, the loading history may also be responsible for development of rock fracturing process. The modeling concept was implemented to simulate a cutting process in a toothed-ring cutting experiment. The results showed the dynamic simulation based on the new rock/bit interaction model provided an efficient way for numerical modeling of rotary drilling operations.
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A New Rock/Bit Interaction Model For Rotary Drilling Process
Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), Washington, D.C., July 2001.
Paper Number: ARMA-01-0903
Published: July 07 2001
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Sun, Xiaoqing. "A New Rock/Bit Interaction Model For Rotary Drilling Process." Paper presented at the DC Rocks 2001, The 38th U.S. Symposium on Rock Mechanics (USRMS), Washington, D.C., July 2001.
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