Evaluation of drilling parameters of a PDC bit

H. Geoffroy (1) , D. Nguyen Minh (1) , Habibou Maitournam (1) , J. Bergues (1) , C. Putot (2)

1 LMS - Laboratoire de mécanique des solides
2 IFPEN - IFP Energies nouvelles

A drilling model for PDC bit is presented herein within steady bit advance hypothesis, with taking into account influence of wear and its evolution. First, friction mechanism on cutter wear flats, is studied by experimental and numerical approach. It is shown to correspond to a relationship between the normal applied pressure to the cutter wear flat, and its subsequent dip angle α into the rock surface. It is shown that frictional wear is directly influenced by bit profile. Typical results are exhibited for elliptic profiles and compared with literature.

Domaines: Mécanique [physics.med-ph]

H. Geoffroy, D. Nguyen Minh, Habibou Maitournam, J. Bergues, C. Putot. Evaluation of drilling parameters of a PDC bit. Advances in Rock Mechanics, 35, pp.578-580, 1998, ⟨10.1142/9789812839640_0028⟩. ⟨hal-00111605⟩