US Patent Issued on Dec. 30 for "Method and system for cutting structure of PDC drill bit with spiral blades" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,511,453, issued on Dec. 30.

"Method and system for cutting structure of PDC drill bit with spiral blades" was invented by Xiangchao Shi (Chengdu, China), Zhaowei Wang (Chengdu, China), Maoping Gao (Chengdu, China), Shuai Chen (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 design method and system for a cutting structure of a PDC drill bit with spiral blades is provided, including carrying out uniaxial and triaxial compressive strength tests on outcrops or underground cores to obtain rock mechanical parameters; establishing a three-dimensional cut...