| 12060763 |
Cementing apparatus for reverse cementing |
Ishwar Dilip Patil, Handoko Tirto Santoso, Lonnie Carl Helms, Jinhua Cao, Frank Acosta +1 more |
2024-08-13 |
| 12044104 |
Differential fill valve with collet sleeve |
Lonnie Carl Helms, Frank Vinicia Acosta Villarreal, Maithri Muddasani, Saul Emmanuel Vazquez Niebla |
2024-07-23 |
| 11746618 |
Cementing apparatus for reverse cementing |
Ishwar Dilip Patil, Handoko Tirto Santoso, Lonnie Carl Helms, Jinhua Cao, Frank Acosta +1 more |
2023-09-05 |
| 11499395 |
Flapper disk for buoyancy assisted casing equipment |
Lonnie Carl Helms, Min Mark Yuan, Handoko Tirto Santoso |
2022-11-15 |
| 11391119 |
Differential fill valve with collet sleeve |
Min Mark Yuan, Saul Emmanuel Vazquez Niebla, Lonnie Carl Helms, Mayur Narain Ahuja, Tor Sigve Saetre +1 more |
2022-07-19 |
| 11391115 |
Plug piston barrier |
Min Mark Yuan |
2022-07-19 |
| 11377920 |
Anchoring downhole tool housing and body to inner diameter of tubing string |
Lonnie Carl Helms, Frank Vinicia Acosta Villarreal, Maithri Muddasani |
2022-07-05 |
| 11346171 |
Downhole apparatus |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Frank Acosta |
2022-05-31 |
| 11293261 |
Buoyancy assist tool |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Frank Acosta, Kevin Wendell Ardoin |
2022-04-05 |
| 11293253 |
Dual sub-surface release plug with bypass for small diameter liners |
Handoko Tirto Santoso, Lonnie Carl Helms, Tor Sigve Saetre, Frank Vinicia Acosta, Thomas Zachary Vonk |
2022-04-05 |
| 11255155 |
Downhole apparatus with removable plugs |
Min Mark Yuan, Frank Acosta, Lonnie Carl Helms |
2022-02-22 |
| 11242720 |
Threadless float equipment and method |
Handoko Tirto Santoso, Min Mark Yuan, Stephen Yeldell, Frank Acosta |
2022-02-08 |
| 11230905 |
Buoyancy assist tool with waffle debris barrier |
Lonnie Carl Helms, Min Mark Yuan, Mayur Narain Ahuja, Ishwar Dilip Patil, Byong Jun Kim |
2022-01-25 |
| 11105166 |
Buoyancy assist tool with floating piston |
Min Mark Yuan, Lonnie Carl Helms, Mayur Narain Ahuja, Ishwar Dilip Patil |
2021-08-31 |
| 10995583 |
Buoyancy assist tool with debris barrier |
Lonnie Carl Helms, Min Mark Yuan, Mayur Narain Ahuja, Ishwar Dilip Patil |
2021-05-04 |
| 10989013 |
Buoyancy assist tool with center diaphragm debris barrier |
Lonnie Carl Helms, Min Mark Yuan, Mayur Narain Ahuja, Ishwar Dilip Patil, Byong Jun Kim |
2021-04-27 |