发明名称 DRILLING SYSTEMS AND HYBRID DRILL BITS FOR DRILLING IN A SUBTERRANEAN FORMATION AND METHODS RELATING THERETO
摘要 <p>Drill bits and methods relating thereto are disclosed. In an embodiment, the drill bit includes a body having a plurality of legs each having a lower section that has a leading surface and a trailing surface. A plurality of cone cutters are each rotatably mounted to the lower section of one of the legs, each having a cone axis, and including a first plurality of cutter elements arranged about the cone axis such that each shears the formation when the body is rotated about the bit axis.</p>
申请公布号 WO2015085212(A1) 申请公布日期 2015.06.11
申请号 WO2014US68864 申请日期 2014.12.05
申请人 NATIONAL OILWELL DHT, L.P. 发明人 CLAUSEN, JEFFERY RONALD
分类号 E21B10/14;E21B10/20 主分类号 E21B10/14
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