Cutting elements for downhole cutting tools comprise a top surface having a cutting surface portion and a cutting profile disposed across the top surface. The cutting elements comprise first and second longitudinal side surfaces and first and second lateral side surfaces, each having a respective cross-section. The cutting profile can be disposed on the cutting surface either asymmetrically or symmetrically. Asymmetrical disposition permits two cutting elements to be arranged facing each other to cover a center point of a cutting tool. The cutting edge of asymmetrical or symmetrically disposed cutting profiles can have a shape that facilitates self-sharpening during cutting.
申请公布号
WO2011162987(A3)
申请公布日期
2012.02.16
申请号
WO2011US39977
申请日期
2011.06.10
申请人
BAKER HUGHES INCORPORATED;STOWE II, CALVIN J.;PONDER, ANDREW D.