Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11578592 | Robust logging-while-drilling sonic transmitters with improved strength and bandwidth | Chung Chang, Michael Shaun Spencer, Peng Li, Jing Jin, Jose Sanchez | 2023-02-14 |
| 10288758 | Wide bandwidth borehole dipole source for acoustic logging | Chung Chang, Wei Zhang | 2019-05-14 |
| 9952344 | High-performance dipole acoustic transmitter | Chung Chang, Tianrun Chen, Gary Kainer | 2018-04-24 |
| 8151905 | Downhole telemetry system and method | — | 2012-04-10 |
| 8024936 | Cooling apparatus, systems, and methods | Bruce H. Storm, Jr., Dingding Chen | 2011-09-27 |
| 7416026 | Apparatus for changing flowbore fluid temperature | Carey John Naquin, John Hardin, James W. Estep, David E. Rios-Aleman, Christopher A. Maranuk | 2008-08-26 |
| 7383897 | Downhole steering tool having a non-rotating bendable section | Michael J. Moody, Jay M. Eppink, William C. Paluch | 2008-06-10 |
| 7246940 | Method and apparatus for managing the temperature of thermal components | Bruce H. Storm, Jr. | 2007-07-24 |
| 7204325 | Spring mechanism for downhole steering tool blades | William C. Paluch, Michael J. Moody | 2007-04-17 |
| 7172038 | Well system | James B. Terry, Thomas Wilson, Jay M. Eppink, Albert C. Odell, II, William Trainor +1 more | 2007-02-06 |
| 7059881 | Spoolable composite coiled tubing connector | James W. Estep | 2006-06-13 |
| 6923273 | Well system | James B. Terry, Thomas Wilson, Jay M. Eppink, Albert C. Odell, II, William Trainor +1 more | 2005-08-02 |
| 6761574 | Coiled tubing connector | James W. Estep, James B. Terry, Thomas Wilson | 2004-07-13 |
| 6450259 | Tubing elongation correction system & methods | David E. Rios-Aleman | 2002-09-17 |
| 6336408 | Cooling system for downhole tools | Robert A. Parrott, Kuo-Chiang Chen | 2002-01-08 |
| 6184685 | Mulitiple spacing resistivity measurements with receiver arrays | Martin D. Paulk | 2001-02-06 |
| 6181138 | Directional resistivity measurements for azimuthal proximity detection of bed boundaries | Teruhiko Hagiwara | 2001-01-30 |
| 6102120 | Zone isolation tools | Kuo-Chiang Chen, Jack F. Lands, Jr., Wallace E. Voreck, Dinesh R. Patel | 2000-08-15 |
| 5833001 | Sealing well casings | Jack F. Lands, Jr., Wallace E. Voreck | 1998-11-10 |
| 5386724 | Load cells for sensing weight and torque on a drill bit while drilling a well bore | Pralay Das | 1995-02-07 |