Abstract: A cutting element may include a substrate; and an ultrahard layer on the substrate, the ultrahard layer including a non-planar working surface that is surrounded by a peripheral edge having a varying height around a circumference of the cutting element, the working surface also having: a plurality of cutting crests extending from an elevated portion of the peripheral edge across at least a portion of the working surface; at least one valley between the plurality of cutting crests; and a canted surface extending laterally from each of the outer plurality of cutting crests towards a depressed portion of the peripheral edge, a height between the depressed portion and the elevated portion being greater than a height between the elevated portion and the valley.

Abstract: A cutting element may include a substrate; and an ultrahard layer on the substrate, the ultrahard layer including a non-planar working surface that is surrounded by a peripheral edge having a varying height around a circumference of the cutting element, the working surface also having: a plurality of cutting crests extending from an elevated portion of the peripheral edge across at least a portion of the working surface; at least one valley between the plurality of cutting crests; and a canted surface extending laterally from each of the outer plurality of cutting crests towards a depressed portion of the peripheral edge, a height between the depressed portion and the elevated portion being greater than a height between the elevated portion and the valley.

Abstract: A cutting element may include a substrate; and an ultrahard layer on the substrate, the ultrahard layer including a non-planar working surface that is surrounded by a peripheral edge having a varying height around a circumference of the cutting element, the working surface also having: a plurality of cutting crests extending from an elevated portion of the peripheral edge across at least a portion of the working surface; at least one valley between the plurality of cutting crests; and a canted surface extending laterally from each of the outer plurality of cutting crests towards a depressed portion of the peripheral edge, a height between the depressed portion and the elevated portion being greater than a height between the elevated portion and the valley.

Abstract: A cutting element includes a cutting end extending a depth from a cutting face to an interface surface opposite from the cutting face, and a spindle, the spindle axially separated from the cutting end by a transition region. The spindle has a spindle diameter measured between a spindle side surface, which is less than a cutting end diameter. A guide length, measured from a point of transition to the transition region to a retention feature, is longer than 75% of a total length of the spindle.

Abstract: A cutting element may include a substrate; and an ultrahard layer on the substrate, the ultrahard layer including a non-planar working surface that is surrounded by a peripheral edge having a varying height around a circumference of the cutting element, the working surface also having: a plurality of cutting crests extending from an elevated portion of the peripheral edge across at least a portion of the working surface; at least one valley between the plurality of cutting crests; and a canted surface extending laterally from each of the outer plurality of cutting crests towards a depressed portion of the peripheral edge, a height between the depressed portion and the elevated portion being greater than a height between the elevated portion and the valley.

Abstract: A cutting element includes a cutting end extending a depth from a cutting face to an interface surface opposite from the cutting face, and a spindle, the spindle axially separated from the cutting end by a transition region. The spindle has a spindle diameter measured between a spindle side surface, which is less than a cutting end diameter. A guide length, measured from a point of transition to the transition region to a retention feature, is longer than 75% of a total length of the spindle.

Abstract: A drill bit having a bit body with a longitudinal axis extending therethrough and a plurality of blades extending from the bit body is disclosed. Each blade has an outer face and at least one side wall. The drill bit has at least one junk slot, wherein each junk slot is defined by the bit body surface and the side walls of adjacent blades. At least one nozzle bore is formed in the bit body, wherein each nozzle bore has an intersecting surface between the bit body surface of a junk slot and an inner surface of the nozzle bore. At least one formation evacuation channel extends through the intersecting surface of at least one of the nozzle bores, wherein each formation evacuation channel has a base surface, and wherein the formation evacuation channel extends partially around the circumference of the nozzle bore.

Abstract: A drill bit having a bit body with a longitudinal axis extending therethrough and a plurality of blades extending from the bit body is disclosed. Each blade has an outer face and at least one side wall. The drill bit has at least one junk slot, wherein each junk slot is defined by the bit body surface and the side walls of adjacent blades. At least one nozzle bore is formed in the bit body, wherein each nozzle bore has an intersecting surface between the bit body surface of a junk slot and an inner surface of the nozzle bore. At least one formation evacuation channel extends through the intersecting surface of at least one of the nozzle bores, wherein each formation evacuation channel has a base surface, and wherein the formation evacuation channel extends partially around the circumference of the nozzle bore.