Downhole drill bit

A downhole cutting tool, comprising:

• a tool body;
• a plurality of blades extending from the tool body;
• and
• a plurality of cutting elements on the plurality of blades, the plurality of cutting elements including at least one pointed cutting element and at least one shear cutting element,
• the at least one pointed cutting element thereon, the at least one pointed cutting element comprising a first polycrystalline diamond material on a first carbide substrate, the first polycrystalline diamond material extending away from the first carbide substrate to terminate in a substantially pointed geometry opposite the first carbide substrate;
• the at least one shear cutting element, the at least one shear cutting element comprising a second polycrystalline diamond material on a second carbide substrate, the second polycrystalline diamond material forming a planar cutting surface opposite the substrate;
• wherein, when the plurality of blades are superimposed on each other, a central axis of at least one pointed cutting element is radially between from a central axis of least two shear cutting elements.

A downhole cutting tool, comprising:

• a tool body;
• a plurality of blades extending from the tool body;
• and
• a plurality of cutting elements on the plurality of blades, the plurality of cutting elements including at least one pointed cutting element and at least one shear cutting element,
• the at least one pointed cutting element thereon, the at least one pointed cutting element comprising a first polycrystalline diamond material on a first carbide substrate, the first polycrystalline diamond material extending away from the first carbide substrate to terminate in a substantially pointed geometry opposite the first carbide substrate;
• the at least one shear cutting element, the at least one shear cutting element comprising a second polycrystalline diamond material on a second carbide substrate, the second polycrystalline diamond material forming a planar cutting surface opposite the substrate;
• wherein, when the plurality of blades are superimposed on each other, a central axis of at least one pointed cutting element is radially between from a central axis of least two shear cutting elements.

A downhole cutting tool, comprising:

• a tool body;
• a plurality of blades extending from the tool body;
• a first blade comprising at least one pointed cutting element thereon, the at least one pointed cutting element comprising a first polycrystalline diamond material on a first carbide substrate, the first polycrystalline diamond material extending away from the first carbide substrate to terminate in a substantially pointed geometry opposite the first carbide substrate;
• a second blade comprising at least one shear cutting element, the at least one shear cutting element comprising a second polycrystalline diamond material on a second carbide substrate, the second polycrystalline diamond material forming a planar cutting surface opposite the substrate;
• wherein a central axis of a first pointed cutting element is oriented at a different angle from a central axis of a second pointed cutting element.