Inventor · disambiguated record

Youqiang Liao

Also filed as: LIAO YOUQIANG

1 granted patent·1 pending application·6 citations·filing 2018–2019

27Inventor score

Technology areasE21B

Files withUNIV CHINA PETROLEUM EAST CHINA2

Top patents by PatentIndex Score

2 records

0186US10408014B1Well killing method and device for a fractured formation without safety pressure window by five-step bullheadingUNIV CHINA PETROLEUM EAST CHINA·Filed 2019·Granted Sep 10, 2019·6 cites·13 claims
0238US2019178046A1Anti-settling Apparatus and Method and Apparatus for Checking the Same, and Apparatus for Preventing Settlement of WellUNIV CHINA PETROLEUM EAST CHINA·Filed 2018·Application pending·0 cites

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