Inventor

ZHAO CHUANWEI

CN2 patents

Patents

2 patents

US12480372B2Nov 25, 2025

Positioning and orientating apparatus for branch well, and positioning and orientating method

CHINA PETROLEUM & CHEM CORP0 citations44

US11946334B2Apr 2, 2024

Flow splitting device for gas reverse circulation drilling

CHINA PETROLEUM & CHEM CORP0 citations40