Drill bit with cutter element having crossing chisel crests

A cutter element for a drill bit comprising:

• a base portion;
• a cutting portion extending from the base portion and defining an extension height;
• wherein the cutting portion comprises a first elongate chisel crest and a second elongate chisel crest that crosses the first elongate chisel crest;
• wherein at least a portion of each of the first elongate chisel crest and the second elongate chisel crest extend to the extension height;
• wherein the first elongate chisel crest includes a first crest end and a second crest end, and is continuously curved therebetween in front profile view.

A drill bit for cutting a borehole having a borehole sidewall, corner and bottom, the drill bit comprising:

• a bit body including a bit axis;
• a rolling cone cutter mounted on the bit body and adapted for rotation about a cone axis;
• at least one cutter element having a base portion with a diameter secured in the rolling cone cutter and a cutting portion extending therefrom;
• the cutting portion comprising a first pair of flanking surfaces that taper towards one another to form a first elongate chisel crest, and a second pair of flanking surfaces that taper towards one another to form a second elongate chisel crest that intersects the first elongate chisel crest in top view;
• wherein the first elongate chisel crest defines a first crest tangent angle in front profile view;
• and
• wherein the first crest tangent angle at 10% of the diameter measured radially from the central axis on the first elongate chisel crest in profile view is greater than 75° and less than or equal to 90°.