发明名称 Fixed cutter bit for directional drilling applications
摘要 A drill bit for drilling a borehole in earthen formations, the bit comprising: a bit body having a bit axis and a bit face including a cone region, a shoulder region, and a gage region; a first primary blade extending radially along the bit face from the cone region to the gage region; a plurality of cutter elements mounted to the first primary blade, wherein a first of the plurality of cutter elements has a planar cutting face and a second of the plurality of cutter elements has a convex cutting face; and wherein each cutting face is forward-facing.
申请公布号 US8418785(B2) 申请公布日期 2013.04.16
申请号 US20100761593 申请日期 2010.04.16
申请人 AZAR MICHAEL G;SMITH INTERNATIONAL, INC. 发明人 AZAR MICHAEL G
分类号 E21B10/42;E21B10/56;E21B10/633 主分类号 E21B10/42
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