Inventor
YU YONGJIN
CN7 patents
⚠️ This page may combine multiple inventors who share the name “YU YONGJIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHINA NAT PETROLEUM CORP
4 patentsUS12497331B2Dec 16, 2025
High-strength Portland cement slurry for ultra-high temperature cementing, preparation method therefor and application thereof
CHINA NAT PETROLEUM CORP0 citations56
US12305116B2May 20, 2025
Ultra-high temperature resistant cement slurry system for cementing and preparation method and use thereof
CHINA NAT PETROLEUM CORP0 citations55
US12391861B2Aug 19, 2025
Cement slurry system, preparation method therefor and use thereof
CHINA NAT PETROLEUM CORP0 citations47
US11618844B2Apr 4, 2023
High temperature resistant Portland cement slurry and production method thereof
CHINA NAT PETROLEUM CORP0 citations44
UNIV SOUTHWEST PETROLEUM
2 patentsUS10975284B2Apr 13, 2021
Well cementation working solution prepared from red mud, slag and waste drilling fluids
UNIV SOUTHWEST PETROLEUM1 citations56
US10876945B2Dec 29, 2020
Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load
UNIV SOUTHWEST PETROLEUM0 citations35