Inventor · disambiguated record
Changgui Xu
Also filed as: XU CHANGGUI
1 granted patent·2 pending applications·3 citations·filing 2020–2024
20Inventor score
Technology areasE21B
Top patents by PatentIndex Score
3 records- 0185US11905829B2Integrated logging instrument for coring and samplingCHINA OILFIELD SERVICES LTD·Filed 2020·Granted Feb 20, 2024·3 cites·20 claims
- 0244US2025052152A1Method for evaluating productivity of vertically heterogeneous gas reservoir considering interlayer crossflowHAINAN BRANCH OF CHINA NAT OFFSHORE OIL CHINA CO LTD·Filed 2024·Application pending·0 cites
- 0339US2024175355A1Method for evaluating productivity of vertically heterogeneous gas reservoir considering interlayer crossflowHAINAN BRANCH OF CHINA NAT OFFSHORE OIL CHINA CO LTD·Filed 2023·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →