| 12221848 |
Casing slip hanger retrieval tool system and method |
Samuel Cheng, Gajanan Hegde, James Richeson |
2025-02-11 |
|
| 12188322 |
Lockdown ring using a self-locking wedge |
Kevin Edward O'Dell, Samuel Cheng, Keith Adams, Wei He |
2025-01-07 |
|
| 11939832 |
Casing slip hanger retrieval tool system and method |
Samuel Cheng, Gajanan Hegde, James Richeson |
2024-03-26 |
$30,473,000 |
| 11920416 |
Metal-to-metal annulus packoff retrieval tool system and method |
Samuel Cheng, Gajanan Hegde |
2024-03-05 |
$36,521,000 |
| 10767435 |
Slip hanger assembly |
Rodolfo Lugo, Andrew Browne Helvenston, Gajanan Hegde, Satish Ramasheshaiah, Chijie Lin +1 more |
2020-09-08 |
$18,040,000 |
| 10584549 |
Coiled tubing split-type running and retrievable clamp tool |
Andrew Browne Helvenston, Vanson Huynh |
2020-03-10 |
$13,184,000 |
| 10458198 |
Test dart system and method |
Detrick Garner, Alfred Olvera, Jason R. Armistead, Samuel Cheng, John Warner +1 more |
2019-10-29 |
$21,217,000 |
| 10253589 |
Offset adjustment rings for wellhead orientation |
Andrew Browne Helvenston, Khang V. Nguyen, Ryan Joseph Parsley |
2019-04-09 |
$15,124,000 |
| 10036224 |
Seal lock down |
— |
2018-07-31 |
$25,659,000 |
| 9695663 |
Combination fluid pumping sub and hanger lockdown tool |
Gajanan Hegde, Andrew Browne Helvenston |
2017-07-04 |
|
| 9624747 |
Tension tubing hanger and method of applying tension to production tubing |
Saurabh Kajaria, Khang V. Nguyen |
2017-04-18 |
$18,651,000 |
| 9617820 |
Flexible emergency hanger and method of installation |
Andrew Browne Helvenston, Christopher Taylor Herman |
2017-04-11 |
$16,578,000 |
| 9458699 |
Slotted wellhead and multibowl polishing tool with woven polishing belt |
Noel A. Monjure, Andrew Browne Helvenston |
2016-10-04 |
$28,885,000 |
| 9447671 |
Adjustable isolation sleeve assembly for well stimulation through production tubing |
Khang V. Nguyen, Saurabh Kajaria |
2016-09-20 |
$22,689,000 |
| 8936098 |
System and method for remediating a wellbore annulus |
James J. Howell, Mahesha Udipi, Mark Viator, David Daniel Comeaux |
2015-01-20 |
|
| 8622121 |
Reinforced frac tubing head |
Mahesha Udipi, Alfredo Olvera, Jim Hwang, Jean Brunjes |
2014-01-07 |
|
| 8327943 |
Wellhead isolation protection sleeve |
Alfredo Olvera |
2012-12-11 |
|
| 8235125 |
System and method for terminating tubing |
— |
2012-08-07 |
|
| 7909105 |
Independent wellhead drilling adapter |
Anton J. Dach, Jr., Vanson Huynh |
2011-03-22 |
|
| 7823634 |
Wellhead isolation sleeve assembly |
Kwong-Onn Chan, Henry He |
2010-11-02 |
|
| 7500516 |
System, method, and apparatus for accessing outlets in a two-stage diverter spool assembly |
— |
2009-03-10 |
|
| 7445046 |
Nested velocity string tubing hanger |
— |
2008-11-04 |
|
| 6918446 |
One-trip wellhead installation systems and methods |
— |
2005-07-19 |
|
| 6488084 |
Casing hanger seal positive stop |
— |
2002-12-03 |
|
| 6401827 |
Tubing hanger running tool |
Bobby L. Ferguson, Jose A. Alvarado, Charles D. Bridges, Vicki Corso |
2002-06-11 |
|
