Well cementation working solution prepared from red mud, slag and waste drilling fluids
US-10975284-B2 · Apr 13, 2021 · US
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Qin Dan patents
Qin Dan is listed as an inventor on 4 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Qin Dan |
| Total patents | 4 |
| First publication | Jan 9, 2020 |
| Latest publication | Apr 13, 2021 |
Notable patents
Publications ranked by popularity score, then publication date.
Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load
US-10876945-B2 · Dec 29, 2020 · US
Well cementation working solution prepared from red mud, slag and waste drilling fluids
US-2020071594-A1 · Mar 5, 2020 · US
Method for evaluating breakage strength of first and second cemented surfaces of well cementation under dynamic load
US-2020011777-A1 · Jan 9, 2020 · US
Recent patents
Latest publications not already listed above.
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Univ Southwest Petroleum | 4 |
| China Academy Of Building Res | 4 |
| Cnpc Eng Tech Res & Dev Co Ltd | 4 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G01N33/383 | 2 |
| G01N2203/0298 | 2 |
| G06Q50/02 | 2 |
| E21B47/005 | 2 |
| G01N2203/0647 | 2 |