![](/images/menggu/230.jpg)
Journal of Petroleum Science and Engineering
rollercone bits is developed based on the approach introduced by Evans and Murrel (1962) and further modified by Ma et al. (1995). A single cutter performance model was first established based on Fig. 1. Schematic representation of experimental cutter force to rock penetration. the experimental data and the ROP model was then introduced by 508 B. Rashidi et al. / Journal of Petroleum Science ...