US Patent Issued to Halliburton Energy Services on April 21 for "Multi-layer drill bit apparatus and systems" (Texas Inventor)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,072, issued on April 21, was assigned to Halliburton Energy Services Inc. (Houston).

"Multi-layer drill bit apparatus and systems" was invented by Shilin Chen (Montgomery, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole drilling system comprises a drill string and a drill bit coupled to the drill string. The drill bit comprises a bit body with primary and secondary blades disposed thereon. Some of the secondary blades are alternately disposed between some of the primary blades. Two first layer cutting elements are disposed on different ones of the primary blades, and substantially diametrically opposed to each other along a first tr...