ROLLER CONE BIT PROVIDED WITH ANTI-TRACKING CUTTING ELEMENT SPACING
摘要
<p>Embodiments of an apparatus for predicting and reducing tracking by roller cone bits by adjusting compact spacing are disclosed. Different pitches between adjacent compacts or teeth provide a cone row that is substantially less likely to track. A given row on a cone may include compacts that are arrayed at a single pitch in a contiguous group for approximately half of the row. The remaining approximately half of the row includes alternating pitches. This configuration enables anti-tracking behavior without very wide spaces and consequent breakage and wear seen in prior art anti-tracking pitch schemes.</p>
申请公布号
WO2009026120(A1)
申请公布日期
2009.02.26
申请号
WO2008US73247
申请日期
2008.08.15
申请人
BAKER HUGHES INCORPORATED;RICKS, GREGORY, L.;LEDGERWOOD, LEROY, WILLIAM