Similarity evaluation of stratum anti-drilling ability and a new method of drill bit selection

YAN Tie,XU Rui,SUN Wenfeng,LIU Weikai,HOU Zhaokai,YUAN Yuan,SHAO Yang

Table 1 Model and diameter of candidate drill bits.

Drill bit model Drill bit type Drill bit diameter/mm Drill bit model Drill bit type Drill bit diameter/mm M163S PDC 311.2 SD516 PDC 215.9 MD546 PDC 215.9 HT537 Roller 311.2 U516M PDC 311.2 HP615 Roller 311.2 KP163 Roller 250.9 DS616 PDC 250.9 KS165 PDC 311.2 HF553 PDC 311.2 HT253 PDC 250.9 ES164 PDC 311.2 HT161 PDC 311.2 SF563 PDC 250.9 KD351 PDC 215.9 SF762 Roller 311.2 HP517 PDC 311.2 SR526 PDC 215.9 U513S PDC 311.2