Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203921 | Continuous circulating concentric casing managed equivalent circulating density (ECD) drilling for methane gas recovery from coal seams | — | 2021-12-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11203921 | Continuous circulating concentric casing managed equivalent circulating density (ECD) drilling for methane gas recovery from coal seams | — | 2021-12-21 |