Issued Patents All Time
Showing 25 most recent of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |
| 11920416 | Metal-to-metal annulus packoff retrieval tool system and method | Samuel Cheng, Gajanan Hegde | 2024-03-05 |
| 10767435 | Slip hanger assembly | Rodolfo Lugo, Andrew Browne Helvenston, Gajanan Hegde, Satish Ramasheshaiah, Chijie Lin +1 more | 2020-09-08 |
| 10584549 | Coiled tubing split-type running and retrievable clamp tool | Andrew Browne Helvenston, Vanson Huynh | 2020-03-10 |
| 10458198 | Test dart system and method | Detrick Garner, Alfred Olvera, Jason R. Armistead, Samuel Cheng, John Warner +1 more | 2019-10-29 |
| 10253589 | Offset adjustment rings for wellhead orientation | Andrew Browne Helvenston, Khang V. Nguyen, Ryan Joseph Parsley | 2019-04-09 |
| 10036224 | Seal lock down | — | 2018-07-31 |
| 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 |
| 9617820 | Flexible emergency hanger and method of installation | Andrew Browne Helvenston, Christopher Taylor Herman | 2017-04-11 |
| 9458699 | Slotted wellhead and multibowl polishing tool with woven polishing belt | Noel A. Monjure, Andrew Browne Helvenston | 2016-10-04 |
| 9447671 | Adjustable isolation sleeve assembly for well stimulation through production tubing | Khang V. Nguyen, Saurabh Kajaria | 2016-09-20 |
| 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 |