发明名称 |
Optimized central cutter and method |
摘要 |
A central cutting structure for use with a drill bit includes a plurality of cutters, of which at least one overlaps the center of a supporting member from which the cutters extend. Each cutter has a side rake angle that provides an overlapping relationship with at least one other cutter to provide an aggressive cutting surface for penetrating hard formations.
|
申请公布号 |
US2011024193(A1) |
申请公布日期 |
2011.02.03 |
申请号 |
US20100924770 |
申请日期 |
2010.10.05 |
申请人 |
SHAMBURGER JAMES;SALVO VINCENTE |
发明人 |
SHAMBURGER JAMES;SALVO VINCENTE |
分类号 |
E21B7/00;E21B10/42 |
主分类号 |
E21B7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|