Leak-proof lost-circulation control water-based drilling fluid composition and preparation method and use thereof
US-11542425-B1 · Jan 3, 2023 · US
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Wu Lingfeng patents
Wu Lingfeng is listed as an inventor on 7 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Wu Lingfeng |
| Total patents | 7 |
| First publication | May 31, 2022 |
| Latest publication | Jan 3, 2023 |
Notable patents
Publications ranked by popularity score, then publication date.
Oil-based drilling fluid composition, oil-based drilling fluid and preparation method and use thereof
US-11485896-B2 · Nov 1, 2022 · US
Pressure-bearing plugging agent and preparation method and use thereof
US-11453814-B2 · Sep 27, 2022 · US
Oil-based drilling fluid composition, oil-based drilling fluid and preparation method and use thereof
US-2022290032-A1 · Sep 15, 2022 · US
Pressure-bearing plugging agent and preparation method and use thereof
US-2022267662-A1 · Aug 25, 2022 · US
Pressure-bearing plugging composition, pressure-bearing plugging slurry and preparation method and use thereof
US-11396621-B1 · Jul 26, 2022 · US
Fiber silica composite microsphere for shale stratum, drilling fluid and preparation method and use thereof
US-11345841-B1 · May 31, 2022 · 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 | 7 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C09K8/5045 | 6 |
| C09K8/426 | 4 |
| C09K8/516 | 4 |
| C09K8/508 | 3 |
| C09K2208/12 | 3 |