公开(公告)号：US20160090804A1

公开(公告)日：2016-03-31

申请号：US14871017

申请日：2015-09-30

Applicant: CONOCOPHILLIPS COMPANY

Inventor： Scott A. GRUBB ,  Jason M. SKUFCA ,  David D. HEARN

IPC: E21B29/00 ,  E21B17/042 ,  E21B10/61

CPC classification number: E21B29/12 ,  E21B21/103

Abstract: Methods and apparatus to reduce flow in front of the drill bit while milling improve milling debris size. Reducing flow on the drill bit face while milling allows the drill cuttings to remain at the drilling surface longer and reduce the size of the cuttings. The smaller cuttings increase the ease and speed of cutting removal.

Abstract translation: 减少钻头前端流动的方法和装置，同时研磨提高了碎屑的尺寸。 铣削时减少钻头面上的流量使得钻屑能够更长时间地保持在钻孔表面，并减小切屑的尺寸。 较小的切屑增加了切割移除的容易性和速度。