| 11519242 |
Telescopic stage cementer packer |
Avinash Gopal Dharne, Lonnie Carl Helms, Ishwar Dilip Patil |
2022-12-06 |
| 11512545 |
Downhole check valve assembly with a ratchet mechanism |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Kevin Wendell Ardoin |
2022-11-29 |
| 11492867 |
Downhole apparatus with degradable plugs |
Min Mark Yuan, Lonnie Carl Helms |
2022-11-08 |
| 11473395 |
Downhole check valve assembly with a locking mechanism |
Stephen Yeldell, Kevin Wendell Ardoin, Lonnie Carl Helms, Min Mark Yuan |
2022-10-18 |
| 11391117 |
Annular casing packer collar stage tool for cementing operations |
Ben E. Dawsey |
2022-07-19 |
| 11359454 |
Buoyancy assist tool with annular cavity and piston |
Lonnie Carl Helms |
2022-06-14 |
| 11346171 |
Downhole apparatus |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Rajesh Parameshwaraiah |
2022-05-31 |
| 11293261 |
Buoyancy assist tool |
Min Mark Yuan, Stephen Yeldell, Lonnie Carl Helms, Rajesh Parameshwaraiah, Kevin Wendell Ardoin |
2022-04-05 |
| 11293260 |
Buoyancy assist tool |
Avinash Gopal Dharne, Stephen Yeldell, Min Mark Yuan, Kevin Wendell Ardoin |
2022-04-05 |
| 11280157 |
Multi-stage cementing tool |
Lonnie Carl Helms |
2022-03-22 |
| 11255155 |
Downhole apparatus with removable plugs |
Min Mark Yuan, Lonnie Carl Helms, Rajesh Parameshwaraiah |
2022-02-22 |
| 11242720 |
Threadless float equipment and method |
Handoko Tirto Santoso, Min Mark Yuan, Stephen Yeldell, Rajesh Parameshwaraiah |
2022-02-08 |