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Downhole check valve assembly with a ratchet mechanism |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Frank Acosta |
2022-11-29 |
| 11473395 |
Downhole check valve assembly with a locking mechanism |
Stephen Yeldell, Lonnie Carl Helms, Min Mark Yuan, Frank Acosta |
2022-10-18 |
| 11391119 |
Differential fill valve with collet sleeve |
Rajesh Parameshwaraiah, Min Mark Yuan, Saul Emmanuel Vazquez Niebla, Lonnie Carl Helms, Mayur Narain Ahuja +1 more |
2022-07-19 |
| 11293260 |
Buoyancy assist tool |
Avinash Gopal Dharne, Stephen Yeldell, Frank Acosta, Min Mark Yuan |
2022-04-05 |
| 11293261 |
Buoyancy assist tool |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Frank Acosta, Rajesh Parameshwaraiah |
2022-04-05 |
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Full bore buoyancy assisted casing system |
Lonnie Carl Helms, Stephen Yeldell, Julio Alberto Cornejo, Frank Acosta, Saul Emmanuel Vazquez Niebla +1 more |
2021-12-14 |
| 10689944 |
Single trip, open-hole wellbore isolation assembly |
Roberto Francisco Schuldes |
2020-06-23 |
| 10385653 |
Single-trip, open-hole wellbore isolation assembly |
Roberto Francisco Schuldes |
2019-08-20 |