ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,510, issued on July 15.
"Bit cutting structure and PDC bit for highly abrasive formations" was invented by Xiangchao Shi (Chengdu, China), Zhaowei Wang (Chengdu, China), Yun Zhuo (Chengdu, China), Ye Jiao (Chengdu, China), Rongrong Wang (Chengdu, China) and Zonglin Lyu (Chengdu, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bit cutting structure and a PDC bit for highly abrasive formations are provided. The PDC bit includes A-type cutting structures, B-type cutting structures and a bit body. The A-type cutting structures and the B-type cutting structures each include a front-row integrated compact and a rear-row conical tooth. Blades are ar...