Chelating agent for reservoir acidification and stimulating injection and its preparation method and application
US-10876043-B2 · Dec 29, 2020 · US
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Petrochina Co Ltd patents in 2020
Petrochina Co Ltd was listed as an assignee on 60 patent publications in 2020.
| Metric | Value |
|---|---|
| Company | Petrochina Co Ltd |
| Year | 2020 |
| Patents | 60 |
Patents
Representative publications for Petrochina Co Ltd in 2020.
Well Cementing Method for Improving Well Cementing Quality by Controlling Hydration Heat of Cement Slurry
US-2020399525-A1 · Dec 24, 2020 · US
Method and apparatus for determining flow rates of components of multiphase fluid
US-10866128-B2 · Dec 15, 2020 · US
Arylaminosilane Compound, Propylene Polymerization Catalyst And Preparation Thereof
US-2020369689-A1 · Nov 26, 2020 · US
Method and device of identifying fracture
US-10845495-B2 · Nov 24, 2020 · US
Top CPC classifications
Most common classification codes for Petrochina Co Ltd in 2020.
| CPC | Patents |
|---|---|
| C01P2004/03 | 9 |
| B82Y40/00 | 6 |
| C01G23/005 | 6 |
| C09K8/584 | 6 |
| E21B49/00 | 6 |
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