Method of determining a drilling parameter of a roller-cone drill bit

摘要

Disclosed herein is a method for determining a drilling parameter of each one of a plurality of roller cones on a roller cone drill bit during drilling, comprising: calculating, from a geometry of cutting elements on each of the roller cones and an earth formation being drilled by the drill bit, the drilling parameter acting on each of the cutting elements; incrementally rotating the bit and recalculating the drilling parameter acting on each of the cutting elements; repeating the incrementally rotating and recalculating for a selected number of incremental rotations; and combining the drilling parameter acting on the cutting elements on each one of the roller cones.