| 12416218 |
Behind casing cementing tool |
Lars Hovda, James C. Stevens, Praveen Gonuguntla |
2025-09-16 |
|
| 12196062 |
Behind casing wash and cement |
Rick D. Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Brett Borland +2 more |
2025-01-14 |
|
| 12152461 |
Through tubing P AND A with bismuth alloys |
Geir Ove Titlestad, David D. Hearn, Curtis G. Blount, Rick D. Watts, Randall S. Shafer +1 more |
2024-11-26 |
$241,340,000 |
| 12139997 |
Behind casing wash and cement |
Lars Hovda, James C. Stevens, Amal Phadke, Praveen Gonuguntla |
2024-11-12 |
$190,398,000 |
| 12129735 |
Tool for metal plugging or sealing of casing |
David D. Hearn, Casey Hirschmann, Randall S. Shafer, Stewart M. Robertson |
2024-10-29 |
$156,133,000 |
| 12123279 |
Setting a cement plug |
Lars Hovda, James C. Stevens, Amal Phadke |
2024-10-22 |
$331,244,000 |
| 11879305 |
Behind casing cementing tool |
Lars Hovda, James C. Stevens, Amal Phadke, Praveen Gonuguntla |
2024-01-23 |
$448,171,000 |
| 11686175 |
Behind casing wash and cement |
Lars Hovda, James C. Stevens, Amal Phadke, Praveen Gonuguntla |
2023-06-27 |
$336,532,000 |
| 11608718 |
Behind casing wash and cement |
Rick D. Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Brett Borland +2 more |
2023-03-21 |
$552,081,000 |
| 11441384 |
Tool for metal plugging or sealing of casing |
David D. Hearn, Casey Hirschmann, Randall S. Shafer, Stewart M. Robertson |
2022-09-13 |
$243,170,000 |
| 11377925 |
Through tubing P and A with bismuth alloys |
Geir Ove Titlestad, David D. Hearn, Curtis G. Blount, Rick D. Watts, Randall S. Shafer +1 more |
2022-07-05 |
$234,980,000 |
| 11136862 |
Behind casing wash and cement |
Rick D. Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Brett Borland +2 more |
2021-10-05 |
$886,036,000 |
| 10760374 |
Tool for metal plugging or sealing of casing |
David D. Hearn, Casey Hirschmann, Randall S. Shafer, Stewart M. Robertson |
2020-09-01 |
$151,627,000 |
| 9914514 |
Subsea vessel and use |
Scott E. Coblitz, Amal Phadke, Derrick Laskowski, Daniel R. Givan, George Z. Gu |
2018-03-13 |
$163,238,000 |
| 7743674 |
High temperature fluid test instrument |
Virgilio G. Boncan |
2010-06-29 |
|
| 7647970 |
Self-sealing well cement composition |
Harold Dean Brannon, Windell Scott Bray |
2010-01-19 |
$55,580,000 |
| 7156173 |
Cement compositions useful in oil and gas wells |
— |
2007-01-02 |
|
| 6508305 |
Compositions and methods for cementing using elastic particles |
Harold Dean Brannon, Christopher John Stephenson, Robert Dillenbeck |
2003-01-21 |
$25,286,000 |
| 6235809 |
Multi-functional additive for use in well cementing |
Gino F. Dilullo Arias, Phillip J. Rae |
2001-05-22 |
$81,397,000 |
| 6230804 |
Stress resistant cement compositions and methods for using same |
Virgilio G. Boncan, Jimmy P. Dickerson |
2001-05-15 |
$41,062,000 |
| 6145591 |
Method and compositions for use in cementing |
Virgilio G. Boncan, Murray Rogers, Windall Bray |
2000-11-14 |
$77,591,000 |
| 5975220 |
Mud suspension control system |
Daniel J. Daulton, Phillip J. Rae, Neil Johnston, Gino DiLullo |
1999-11-02 |
$18,908,000 |
| 5421409 |
Slag-based well cementing compositions and methods |
Jimmy P. Dickerson |
1995-06-06 |
$4,788,000 |