Non-parallel face polycrystalline diamond cutter and drilling tools so equipped
View Patent ↗A superabrasive cutter including a superabrasive table having a cutting face in non-perpendicular orientation with respect to a longitudinal axis of the cutter. A superabrasive cutter having a cutting face of a superabrasive table in non-parallel orientation to a back surface thereof.
1. A cutting element for use on a bit for drilling subterranean formations, comprising:
a volume of superabrasive material including:
a cutting face having a generally flat central area extending at a non-perpendicular angle relative to a longitudinal axis of the cutting element;
a rear boundary located aft of the cutting face;
a cutting edge at a periphery of the cutting face;
a rake land on the cutting face, wherein the flat central area of the cutting face is located radially inward of the rake land; and
a sidewall between the cutting edge and the rear boundary.
2. The cutting element of claim 1 , wherein the sidewall is substantially parallel to the longitudinal axis.
3. The cutting element of claim 1 , wherein the volume of superabrasive material further includes two different layers of material each having a different crystalline structure.
4. The cutting element of claim 1 , wherein the volume of superabrasive material is attached to a substrate element.
5. The cutting element of claim 4 , wherein the substrate element includes a sleeve attached thereto.
6. The cutting element of claim 5 , wherein the sleeve includes a portion thereof extending over at least a portion of the volume of superabrasive material.
7. The cutting element of claim 4 , wherein a surface of the substrate element attached to the volume of superabrasive material is formed at a non-perpendicular angle with respect to the longitudinal axis of the cutting element.
8. The cutting element of claim 4 , wherein the substrate element includes a portion thereof extending over a portion of the volume of superabrasive material.