Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12234703 | Wellbore plug and wellbore assembly with plug having a passive non-rotation mechanism | Daniel Lee Schmidt, Todd Anthony Stair | 2025-02-25 |
| 12071831 | Integral swivel for multiple stage cementing tools apparatus and method of use | Henry E. Rogers, Carlos Valdez | 2024-08-27 |
| 11384613 | Wellbore dart with separable and expandable tool activator | Bo Gao, Lonnie Carl Helms, Aniruddha D. Gadre, Yuzhu Hu | 2022-07-12 |
| 11313202 | Systems and methods for controlling fluid flow in a wellbore using a switchable downhole crossover tool | Bo Gao, Lonnie Carl Helms, Aniruddha D. Gadre, Yuzhu Hu | 2022-04-26 |
| 11008838 | Switchable crossover tool with hydraulic transmission | Bo Gao, Lonnie Carl Helms, Aniruddha D. Gadre, Yuzhu Hu | 2021-05-18 |
| 10914133 | Switchable crossover tool with rotatable chamber | Bo Gao, Lonnie Carl Helms, Aniruddha D. Gadre, Yuzhu Hu | 2021-02-09 |
| 10844692 | Subsurface wellbore wiper deployment system and method of use | Tim Griffin, Henry E. Rogers | 2020-11-24 |
| 10767440 | Wiper dart with reinforced drive element | Todd Anthony Stair, Carlos Valdez | 2020-09-08 |
| 10718179 | Wellbore isolation devices and methods of use | Todd Anthony Stair, Michael Dale Ezell | 2020-07-21 |
| 10689943 | Wellbore isolation devices and methods of use | Todd Anthony Stair, Michael Dale Ezell | 2020-06-23 |
| 10648286 | Methods for cementing a well using a switchable crossover device | Bo Gao, Lonnie Carl Helms, Aniruddha D. Gadre, Yuzhu Hu | 2020-05-12 |
| 10557329 | Systems and methods for controlling fluid flow in a wellbore using a switchable downhole crossover tool with rotatable sleeve | Bo Gao, Lonnie Carl Helms, Aniruddha D. Gadre, Yuzhu Hu | 2020-02-11 |
| 10494892 | Multifunction downhole plug | Todd Anthony Stair | 2019-12-03 |
| 10260298 | Wellbore isolation devices and methods of use | Todd Anthony Stair, Michael Dale Ezell | 2019-04-16 |
| 10221647 | Cement head system and method for operating a cement head system | Nicolas Rogozinski, Henry E. Rogers, Phillip Standifer | 2019-03-05 |
| 9909382 | Subsurface wiping plug apparatus, method, and system | Daniel Lee Schmidt, Patrick Lyle Cherney | 2018-03-06 |
| 8215404 | Stage cementing tool | Don R. Smith, Donald W. Winslow, Frank Acosta | 2012-07-10 |