Permanent packer and extended gas lift method using permanent packer
US-11994011-B2 · May 28, 2024 · US
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Ma Huiyun patents
Ma Huiyun is listed as an inventor on 8 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Ma Huiyun |
| Total patents | 8 |
| First publication | Sep 5, 2019 |
| Latest publication | May 28, 2024 |
Notable patents
Publications ranked by popularity score, then publication date.
Downhole throttling device based on wireless control
US-11946349-B2 · Apr 2, 2024 · US
Permanent packer and extended gas lift method using permanent packer
US-2022349282-A1 · Nov 3, 2022 · US
Downhole throttling device based on wireless control
US-2022205346-A1 · Jun 30, 2022 · US
Apparatus and method for determining volume stability of well cement
US-11112398-B2 · Sep 7, 2021 · US
Method and device for determining elasticity of cement stone utilized in well cementing of oil-gas well
US-10928282-B2 · Feb 23, 2021 · US
Apparatus and method for determining volume stability of well cement
US-2019302092-A1 · Oct 3, 2019 · US
Method and device for determining elasticity of cement stone utilized in well cementing of oil-gas well
US-2019271621-A1 · Sep 5, 2019 · 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 |
|---|---|
| Petrochina Co Ltd | 8 |
| Sichuan Shengnuo Oil And Gas Engineering Tech Service Co Ltd | 3 |
| Sichuan Shengnuo Oil And Gas Engineering Tech Service Co Ltd | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| G01N3/08 | 4 |
| G01N3/12 | 4 |
| G01N33/383 | 4 |
| E21B47/005 | 2 |
| E21B33/14 | 2 |