• A dynamic model of the drilling action of percussive tools 

      Song, Xianfeng; Kane, Pascal-Alexandre; Aamo, Ole Morten; Detournay, Emmanuel (Chapter, 2019)
      A phenomenological model is proposed to explain the existence of sweet spot in the relationship between the rate of penetration (ROP) and the weight-on-bit (WOB), i.e., the existence of an optimal WOB for which the ROP is ...
    • A Phenomenological Model of Percussive Drilling: Review of Experimental Evidence 

      Song, Xianfeng; Aamo, Ole Morten; Kane, Pascal-Alexandre; Detournay, Emmanuel (Chapter, 2019)
      In this paper, we review and analyze published experimental findings in light of the hypothesis that the dependence of bit-rock interface (BRI) pseudo-stiffness on the weight-on-bit (WOB) is the key factor behind the ...
    • Influence of Weight-on-Bit on Percussive Drilling Performance 

      Song, Xianfeng; Aamo, Ole Morten; Kane, Pascal-Alexandre; Detournay, Emmanuel (Peer reviewed; Journal article, 2020)
      A phenomenological model for percussive drilling systems is proposed in this paper to explain the experimentally demonstrated existence of an optimal weight-on-bit (WOB), for which the rate of penetration (ROP) is maximized. ...
    • Unscented Kalman Filter Based State and Parameter Estimation in Percussive Drilling Systems 

      Song, Xianfeng; Kane, Pascal-Alexandre; Abooshahab, Mohammad Ali (Chapter, 2020)
      Down-The-Hole (DTH) percussion tool is recognized for its high average rate of penetration (ROP), when drilling medium hard to very hard rock formations. This ROP which depends on the bit-rock contact conditions at the ...